When temperatures rise, we tend to crank the air conditioning; it is important that before summer hits you are able to address any issues with your AC before you get stuck in a hot car without climate control. When looking for the reason, you should always start with the most obvious cause, insufficient amount of refrigerant. Excessive oil can also reduce the performance of the compressor and can cause it to fail prematurely. Over time, grime, bugs and other small particles can build up on its surface and in the gaps of its mesh. Start with the "AC stops blowing cold air" thread in the DIY sticky above, to extract trouble codes and current sensor values. To get around it, youre going to want to try and do a Mercedes air conditioning reset sooner rather than later. The air conditioning system in Mercedes-Benz GLS has a condenser coil that sits at the front of the vehicle, and is responsible for releasing the heat from the refrigerant into the ambient air. 2000 Mercedes-Benz E320 167,000 mi, The OBDII connector is usually located under the dashboard. One is labelled H for high-pressure and the other one is labelled L for low-pressure. The function of both expansion valve and orifice tube is the same, to restrict the flow and reduce pressure of the refrigerant before it enters the evaporator coil. You can introduce some dye on the following charge and see if you can locate the leak. Maybe even charge the A/C system if needed. If your blower motor flap has failed, you need to replace the blender motor. 75 Answers. Removing pressure from fluid causes it to lose temperature. The pollen filter, also known as the cabin air filter or microfilter, is responsible for filtering the air that the passengers breathe in Mercedes-Benz GLS. There are two ports in the air conditioning system of GLE. If you dont service the AC system in your GLS for a long time, the refrigerant level will eventually get so low that the system loses its cooling capacity. If so, are there any threads out there that help guide me to 1) recharging the ac and 2) fixing this discriminatory ac distribution? Once youve done this, you can let the buttons go. When this happens, you will only get hot air from the air vents of your vehicles AC. then it starts blowing hot, i check to see if compressor stop working but it still works while temp on air changes. If the condenser is dirty on your GLS, the simplest solution is to clean it. Follow the A/C recharge kit recommendation to avoid putting air into the system. What could cause that? 2022 Cash Cars Buyer. Youll also need to prepare to pay whatever its going to cost to fix your AC system. Cleaning the evaporator in GLS is not a simple task. This is because most other mechanics don't handle the delicate systems of these vehicles, especially when it . In rare cases, a fault in the climate control unit can cause the AC to stop cooling. Or, it may cause the compressor to run continuously and freeze up the evaporator coil resulting in poor cooling and reduced airflow. You might find that your car will keep on blowing warm air even after youve reset your Mercedes air conditioning system. "url": "https://dellsservicecenter.com/wp-content/uploads/2017/07/Mercedes-AC-Blowing-Hot-Air.jpg", Learn how to fix the problem by recharging the A/C system of your Mercedes-Benz with a refrigerant. It is a good idea to make AC diagnostics part of your routine maintenance for your Mercedes; you dont want to get caught in the summertime without a cool retreat in your luxury vehicle. Youre going to need to get to the bottom of the problem as soon as you can so that you can get cool air blowing throughout your car. This can be a very frustrating problem for many people! Haven't tried this yet but I'm heading out soon to give it a go: I been having the same issue, is it me or am i the only one, i have hte car set at 68 degrres and the car is so warm i have to go dow nto 54 degrres setting to have a/c i nthe car and cool down the cabin,i did take to the shop they said compressor is fine kicking in they recharged it with freon, what can it be ? Keep all loose-fitting clothing and body parts away from moving parts. If there isnt enough oil added with the refrigerant or to the compressor itself if it was replaced, the internal components of the compressor will wear out and cease to function. You might also be considering selling your car as opposed to trying to diagnose an AC problem and fix it. To officially get a Mercedes air conditioning reset underway, youre going to need to take the key for your car and stick it into your ignition. Attach the hose from the A/C Recharge Kit and check the pressure. Answer (1 of 9): It's most likely a fault in the dampers that control the air path into the cabin if it's truly "hot", meaning significantly warmer than ambient. That being said, its worth noting that a Mercedes air conditioning reset isnt always going to get the job done. Is this a simple fix? When you purchase through links on our site, we may earn an affiliate commission, which supports our community. If there is something going on with your damper, it could be putting, well. The leak can be diagnosed by injecting small amount of fluorescent dye into the AC system. Mercedes Benz Evaporator. Mercedes-Benz GLE AC blowing hot air causes and how to fix it, Mercedes-Benz GLE AC not blowing hard enough - weak airflow causes, Mercedes-Benz GLE bad mass air flow sensor (MAF) symptoms and causes, Mercedes-Benz GLE dirty cabin air filter symptoms, when to replace, Mercedes-Benz GLE dashboard lights flicker and wont start causes and how to fix it, Mercedes-Benz GLE makes clicking noise and won't start - causes and how to fix it, Mercedes-Benz GLE horn not working causes and how to fix it, Mercedes-Benz GLE shakes at highway speeds - causes and how to fix it, Mercedes-Benz GLE slow acceleration causes and how to fix it, How to remote start Hyundai Ioniq 5 with key fob or mobile device, BMW 1 Series bad spark plugs symptoms, causes, and diagnosis, GMC Sierra 1500 Apple CarPlay not working causes and how to fix it, BMW 8 Series bad mass air flow sensor (MAF) symptoms and causes, Nissan Patrol AC not cooling causes and diagnosis, Nissan Quest bad wheel bearings symptoms, causes and diagnosis, BMW Z4 auto windows not working, how to reset, Vauxhall Combo Life AC not working causes and how to fix it, Fiat 500 clogged catalytic converter symptoms, causes, and diagnosis, Nissan Sentra bad wheel bearings symptoms, causes and diagnosis, Renault Scenic pulls to the left when driving, VW Jetta AC blowing hot air causes and how to fix it, Aston Martin Vantage horn not working causes and how to fix it, VW Crafter steering wheel controls not working causes and how to fix it. "height": 75 The most common causes for AC blowing hot air in Mercedes-Benz GLS are low or overcharged refrigerant, compressor malfunction, dirty condenser or evaporator coils, faulty blend door actuator, defective evaporator temperature sensor, bad AC pressure sensor, and bad fuse or relay. Its job is to turn the fan blades in your AC system that keep cool air moving through the system. While the pictures in this article are of Mercedes Benz cars, this guide is written to apply to all makes and models. "description": "If your Mercedes is blowing hot air out of the vents, here is some useful information that may help you figure out what the issue is." You can rinse the condenser clean with a garden hose. Check your vehicles owners manual or look under the hood to find the type of the refrigerant your vehicle uses. In case of contamination, you may have to flush out the contaminants from the AC system of your GLE, including the condenser and the evaporator, before putting in the new part. This can be done, for example, with a vacuum cleaner or a compressed air system, removing at least a large part of the visible dirt particles. Your cars computer can tell you whether or not there might be an issue with your damper thats preventing cool air from making its way to your cabin. A dirty filter causes the overall ventilation of the interior to deteriorate resulting in reduced cooling and air flow. If the AC system fails in these models, then all temperature regulation will stop working. It's going to get your AC system running like usual and allow you to soak up all the cool air that it's able to put out. Your vehicles air conditioning system has an expansion vale or an orifice tube, depending on the model. For instance, if your air conditioner is not turned . The air conditioning system in Mercedes-Benz GLE has a condenser coil that sits at the front of the vehicle, and is responsible for releasing the heat from the refrigerant into the ambient air. The pressure values based on ambient temperatures differ depending on the type of the refrigerant. Set the temperature to cold, the lowest setting. More often than not, a Mercedes air conditioning reset is going to do the trick when your car won't blow anything but warm air following a recharge. I'll bet you'll find one of the controls is 'o. Cleaning the evaporator in GLE is not a simple task. You can use pressure washer for cleaning, but make sure its at low pressure setting, as high pressure can damage the delicate fins on the condenser. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! Connect the pressure gauge to the low pressure (L) port in GLS. "width": 710 Keep reading to discover more about, what a Mercedes air conditioning reset is, For those of you who havent ever had to do one, a Mercedes air conditioning reset is a process that allows you to reset your entire. When this happens, you will only get hot air from the air vents of your vehicles AC. Just lift off the cover and access the 20mm torx bolts under. "logo": { AC not working, blows hot air on Mercedes S 430, S500, S600 Home Troubleshooting Mercedes-Benz GLE AC blowing hot air causes and how to fix it. Technical Specs. The sound will be most prominent for a few seconds when you turn on the air conditioning or adjust the temperature. A professional mechanic or technician should be consulted for any problems not covered below. Therefore, it is recommended to do this in a workshop. A car air conditioning system that needs repairs shouldn't affect the rest of your vehicle. The most common symptom of a faulty blend door actuator in Mercedes-Benz GLS is a slight clicking sound (or other unusual noise) repeatedly coming from under the dashboard. Check which type of refrigerant your vehicle uses. A bad blend door actuator cannot be repaired and must be replaced with a new one. If the compressor fails, the AC will only blow hot air. In rare cases, a fault in the climate control unit can cause the AC to stop cooling. Locate the Low-Pressure A/C recharge port. So if youre facing a problem of compressor not turning on in your GLE, you should first check if this little, inexpensive sensor is working properly. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Is your air conditioner A/C not working or blowing hot air? Working on your Mercedes Benz's aircon system is time-consuming but not . The low-temperature refrigerant passes through the evaporator, which causes the evaporator to get cold. There are several things that you can try to get your AC system working again. Is this something that I, who changing the breaks is the most challenging thing that I have done on a car, can do? If you have low pressure, then check for leaks. If not, continue with these troubleshooting steps. The read more . In most cases, the entire dashboard has to be removed before you can access the evaporator. From here, the refrigerant goes to the evaporator. You should continue to hold these buttons down until their individual LED lights start flashing for you. Instead of changing the cabin air filter in GLE, it is often recommended to first clean the filter. You can check this on your own at home if you feel comfortable enough to work on your own Mercedes; however, it is always recommended that Mercedes professionals diagnose any issues. You can recharge your AC through the low-pressure port with a do it yourself AC recharge kit. But since its the most easiest thing to check, you should definitely start by inspecting the condition of the filter when troubleshooting the AC. May 23, 2014. Before the AC stops blowing cold air a funny smell comes out then it starts to bl read more "width": 243, If you are not getting hot or cold air, you may have a problem with the blower fan. For Mercedes owners, this may even defeat the purpose of owning a luxury vehicle. . This is a video on how I repaired my 2011 Mercedes Sprinter AC (blowing hot air sometime when system shows full charge ) AC not working this is the Fix for sprinter ac blowing hot. Most cars are designed to have the radiator cooling fan kick in when the A/C is on. To get around it, youre going to want to try and do a Mercedes air conditioning reset sooner rather than later. This could reduce airflow, resulting in reduced A/C performance. You should then turn your car off completely. Mercedes Benz ac blowing hot air - What you do now? Came out less than an hour and now it's blowing hot air. Save my name, email, and website in this browser for the next time I comment. 10 Factors To Consider, 10 Tips for Preparing Your Junk Car for Sale, 10 Benefits Of Selling Your Junk Car For Cash, 12 Common Reasons People Sell Their Junk Cars. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! It ran rough with EGR code, replaced EGR valve runs the same, EGR percentage over 50% at idle. Youre going to need to get to the bottom of the problem as soon as you can so that you can get cool air blowing throughout your car. Some kits ask that you keep the can upright, while others ask to keep it upside down. The compressor helps circulate the air in your vehicle, and controls the temperature of the cabin by eliminating all the warm air, and replacing it with cooled air. Next, check the clutch itself. Mercedes-Benz E250 AC Condenser Cost . 2001 Mercedes-Benz E320 60,000 mi, Visitor. Any ideas? Refrigerant leak in GLS can be caused by leaking O-ring seals, leaking condenser or evaporator core, or a cracked hose. Youre going to need to locate each of these buttons and then press them and hold them down for somewhere between 5 and 10 seconds. Text-to-speech function is limited to 100 characters, Air Conditioner Troubleshooting Guide & Diagnosis. Therefore, it is recommended to do this in a workshop. 1992 mercedes-benz 500sl. The compressor helps circulate the air in your vehicle, and controls the temperature of the cabin by eliminating all the warm air, and replacing it with cooled air. For those of you who havent ever had to do one, a Mercedes air conditioning reset is a process that allows you to reset your entire AC system at one time. So if youre facing a problem of compressor not turning on in your GLS, you should first check if this little, inexpensive sensor is working properly. The refrigerant pressure is affected by the outside atmospheric temperature. Ideally, the refrigerant should never leak in a properly sealed AC system, but most car AC systems do leak small amount of refrigerant over time due to minor imperfections and will need recharging after every few years. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator Look at the puller, and you should be able to see if it is spinning or not. You will need to use charge the system with some dye to find where the leak is. If this sensor develops a defect, it will send incorrect values to the control unit and the AC compressor will not turn on. Insufficient amount of refrigerant in the AC system is one of the leading causes of AC blowing hot air in GLS. Check to see that the cooling fans on the radiator are running when the air conditioning is on. The Freon level is adequate , in fact found to be in red zone on a A/C Pro read more Aaron Robert Lead Mechanic & Owner Technical Diploma 25 satisfied customers The a/c is blowing hot air suddenly after having an oil Keep in mind, an AC compressor can fail without any apparent cause, especially in older vehicles or in vehicles that have racked up too many miles. "name": "Dells Service Center", Close. Shake the canister briefly and release the refrigerant into the system until the recommended pressure has been achieved. The LED lights connected to each of them should keep on flashing in your car even after youve stopped pressing the buttons down. Its something thats also sometimes called a Mercedes climate control reset. A Detailed Guide, 10 Signs Its Time To Consider Junk Car Removal, How To Find Reputable Junk Car Buyers Online? This will give your Mercedes the time that it needs to complete your air conditioning reset. . Its something thats also sometimes called a Mercedes climate control reset. Less common causes are clogged expansion valve or orifice tube, overcharged oil, or a defect in the climate control unit. Your email address will not be published. Diagnosing problems with an air conditioning system can be very complicated. Make sure the AC is turned on. It is a frustrating problem, especially during the summer, when it is almost impossible to drive a car without the AC on. The air conditioning system in your Mercedes has a part called a damper thats in charge of directing air into your cabin. In many models, the AC keeps blowing hot air even after recharging the coolant. JavaScript is disabled. The pressure values based on ambient temperatures differ depending on the type of the refrigerant. Once you have the key for your Mercedes in the second position in your ignition cylinder, you can then remove your hand from it so that you dont accidentally turn it any further. "headline": "Mercedes Air Conditioner Blowing Hot Air: What to Do", Even if there is no error, the pressure switch may still be bad, in this case you have to read the values from the sensor if it shows zero pressure, it means the sensor is bad. If the condenser fails, the gas will not cool down enough and your car's AC will stop blowing cool air through the vents. The most common causes for AC blowing hot air in Mercedes-Benz GLE are low or overcharged refrigerant, compressor malfunction, dirty condenser or evaporator coils, faulty blend door actuator, defective evaporator temperature sensor, bad AC pressure sensor, and bad fuse or relay. If you can't get cold air in the cabin, the compressor might have failed. Or, it may cause the compressor to run continuously and freeze up the evaporator coil resulting in poor cooling and reduced airflow. Less common causes are clogged expansion valve or orifice tube . Outside temperature updates only when vehicle is in motion. To get around this issue, you can turn on the defroster, which automatically uses the AC component. If you are only topping off the refrigerant in your Mercedes-Benz GLE with off-the-shelf refrigerant recharge cans and not repairing the leak, you may have flooded with AC system with oil since these cans often contains added oil. We recommend the. As you charge the system, you may notice the A/C starts to work. Compressors can take a dive if they go unused for extended periods of time. Note: Dirty cabin air filter mostly only leads to reduced cooling. Remember that these are a guideline, and your actual temperatures and pressures will vary depending on the humidity in the air and the condition of your system. Even if you arent handy whatsoever as far as cars are concerned, you should still be able to conduct a Mercedes air conditioning reset within just a matter of minutes without any problems. Whenever I hear hot air on one vent and cold air in other vents, it makes me think of a stuck duo valve. But by carrying out an AC reset in your Mercedes, you could potentially restore order in your car if and when you ever have a temporary fault in it that knocks your AC system off course. If the evaporator temperature sensor develops a defect, the compressor may not turn on, causing the AC to only blow hot air in your GLS. 1998-2000 Mercedes-Benz ML320 Actuator Motor - A/C Flap Vemo 163 820 01 08. i figured i should check the refrigerant but i - Answered by a verified Mercedes Mechanic We use cookies to In case of severe contamination, multiple components may have to be replaced, including the condenser, the evaporator and the compressor. The following is a general A/C system troubleshooting guide. Answered by FixItMan in 2 mins 8 years ago FixItMan Auto Mechanic You do not want to start the car since thatll prevent you from being able to perform a Mercedes air conditioning reset. Check out. The engine is running, turn the A/C on to max cool, set the fans high, and ensure that the clutch is engaging on the compressor. Since Mercedes-Benz GLS is equipped with on-board diagnostics (OBD), a fault diagnosis can provide initial indications of where the malfunction is located in the air conditioning system. Climate control module is the brain of the air-conditioning system in your Mercedes-Benz GLE, responsible for controlling all the components in the system. From the compressor, the fluid goes to the condenser. When professional auto mechanics have their hands on your car routinely, they can spot troublesome repair needs early on before any significant repair work needs to be done. Ensure the fan is high, the temperature selector is turned to COLD, and the A/C and recirculate light indicators are on. If you attempt to do a Mercedes air conditioning reset and your car continues to blow warm air, there could be any number of things causing this to happen. Car Dent Repair Cost The Price Depends on the Size, Location, and Number of Dents! AC blows out hot air. But youll be happy to know that its very easy to pull one off. When the compressor doesnt turn on, many consider replacing the more expensive parts like the compressor before checking the AC pressure switch. Youll also need to prepare to pay whatever its going to cost to fix your AC system. Insufficient lubricant: The compressor in GLS needs lubrication to function properly and minimize mechanical wear by reducing friction. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. }, The AC pressure switch in GLE detects and monitors the pressure of the refrigerant in the AC system. Reading through the owners manual for your car to see if there are any other steps that you need to take to perform a Mercedes air conditioning reset in your specific vehicle, Bringing your car to a mechanic who specializes in working on Mercedes vehicles to have them perform the Mercedes air conditioning reset, Having your Mercedes AC system looked at to see if there might be something wrong with it, If you attempt to do a Mercedes air conditioning reset and your car continues to blow warm air, there could be any number of things causing this to happen. The Fora platform includes forum software by XenForo. You might find that your car will keep on blowing warm air even after youve reset your Mercedes air conditioning system. Just get in touch with us and let us know a little more about your car (make and model, year, mileage, etc.) The most common symptom of a faulty blend door actuator in Mercedes-Benz GLE is a slight clicking sound (or other unusual noise) repeatedly coming from under the dashboard. In case of severe contamination, multiple components may have to be replaced, including the condenser, the evaporator and the compressor. There is also a high-pressure service port. When the refrigerant leaks again, the leaking component will shine under UV light. The main sign to look for if you have a faulty AC low pressure hose is your AC system blowing cold-ish (but not chilled) air, or if the air isn't cold at all. Youre then going to need to turn the key just slightly to the second position in your ignition cylinder. More often than not, a Mercedes air conditioning reset is going to do the trick when your car. Marty is online now Continue Related Mercedes Questions "dateModified": "2017-07-13", Since Mercedes-Benz GLE is equipped with on-board diagnostics (OBD), a fault diagnosis can provide initial indications of where the malfunction is located in the air conditioning system. This information is typically located under the hood and/or in the owners manual. Mercedes-Benz Sedan / Coupe / Wagon Forums, http://www.benzworld.org/forums/v-class/1283782-mercedes-fault-codes-these-will-get.html. This is the essential operation of the A/C system, so lets move on to some troubleshooting tips. In case of contamination, you may have to flush out the contaminants from the AC system of your GLS, including the condenser and the evaporator, before putting in the new part. A knocking noise from behind the dashboard could be an indicator of a bad blend door actuator in your GLS. When hot air is blowing I check under the hood and tube from AC compressor is cold all the time. Have you driven it yet? If you own a Mercedes, then you know what it means to drive in true luxury. How soon you should get it serviced . "author": { You will also have to find the leak to keep this from happening in the future. Mercedes-Benz GLS AC blowing hot air causes and how to fix it, Mercedes-Benz GLS AC not blowing hard enough - weak airflow causes, Mercedes-Benz GLS bad mass air flow sensor (MAF) symptoms and causes, Mercedes-Benz GLS dirty cabin air filter symptoms, when to replace, Mercedes-Benz GLS dashboard lights flicker and wont start causes and how to fix it, Mercedes-Benz GLS makes clicking noise and won't start - causes and how to fix it, Mercedes-Benz GLS horn not working causes and how to fix it, Mercedes-Benz GLS shakes at highway speeds - causes and how to fix it, Mercedes-Benz GLS slow acceleration causes and how to fix it, Mazda Tribute bad gas mileage causes and how to improve it, BMW X6 windshield washer not working causes and how to fix it, Citroen C3 Aircross AC not blowing hard enough weak airflow causes, Alfa Romeo Giulia key fob not working causes and how to fix it, Ford Crown Victoria AC blowing hot air causes and how to fix it, Land Rover Defender burning smell causes and how to fix it, Fiat Panda steering wheel vibration causes and diagnosis, Ram 2500 Heavy Duty makes humming noise at high speeds causes and how to fix it, Chrysler Concorde ABS light is on causes and how to reset, Chrysler Grand Voyager bad alternator symptoms, how to check voltage, Ram 4500 Heavy Duty battery light is on causes and how to reset, Lincoln MKC bad spark plugs symptoms, causes, and diagnosis, How to use rear view camera guide lines on BMW 7 Series, MG ZS key fob not working causes and how to fix it, Porsche Macan AC not blowing hard enough weak airflow causes, Cadillac SRX low tire pressure warning light causes, how to reset, Nissan Murano windshield washer not working causes and how to fix it, GMC Yukon makes sloshing water sound causes and how to fix it, Kia Soul dirty cabin air filter symptoms, when to replace. However, that question really hadn't been answered, so I won't bother to delete my post. How To Sell My Unwanted Car For Top Dollar? If the compressor fails, the AC will only blow hot air. Most car owners think that a puddle under your car will let you know what you are leaking any fluids, but that is simply not the case, because refrigerant evaporates, leaving no evidence of a leak beneath your car. "@type": "BlogPosting", Since some OBD codes are manufacturer-specific, the scanner will be able to give you more accurate information if you enter more details about your GLE. The air then blows through the evaporator, which makes it get cold. This, unfortunately, isnt always easy to do! } Mercedes-Benz ML350 AC Low Pressure Hose Cost . Hyundai Elantra Android Auto not working causes and how to fix it, Pontiac Solstice pulls to the right when driving, Nissan Pathfinder AC smells bad causes and diagnosis, MG ZS clogged catalytic converter symptoms, causes, and diagnosis. But its definitely worth a shot since your alternative is going to be either riding around in a hot car or paying for costly AC repairs. Leaks are the most common problem associated with the air conditioning system. The reason for this is that if you have low levels of refrigerant, you cannot simply top off the fluid level; the AC system is a closed system that should not have a depletion of refrigerant at any time. Looks to me like the air flow canal door is not opening or closing properly. OP's thread is ancient - dates back to August, and the first reply was more than a month later. I have 2009 Mercedes c300 I Drive to the store the AC works fine I stopped at the store come back out getting my car started up and the AC wont come on any help, Your email address will not be published. In most cases, the entire dashboard has to be removed before you can access the evaporator. Its only going to be effective if there was a temporary fault in your system that stopped your AC from working. Check all the relevant fuses and relays related to the air-conditioning system in your GLS. Here are several situations in which you should try a Mercedes air conditioning reset to see how your car responds: Again, you dont necessarily need to perform a Mercedes air conditioning reset each and every time that you sense trouble with your AC system. In some vehicle models, cold and hot air are mixed to create the preferred temperature. After the one-minute mark has passed, you can start your car up like normal. Check your vehicles owners manual or look under the hood to find the type of the refrigerant your vehicle uses. If the pressure is higher than the recommended pressure, let some refrigerant out preferably into a rag to avoid exposure. "@type":"WebPage", A loose connection, broken valve, corroded seal, or damaged part can cause the Mercedes Benz air conditioning problems. It is not only responsible for pumping the refrigerant throughout the AC system but also converting the refrigerant from gaseous state to liquid state as it passes through the condenser. Runs the same, EGR percentage over 50 % at idle like normal this is the essential operation the! Try to get your AC system is time-consuming but not troubleshooting guide Street, 600! For Top Dollar opposed to trying to diagnose an AC problem and fix it problems not covered below said... Are of Mercedes Benz AC blowing hot air is blowing I check under the hood to Reputable. To drive in true luxury for a few seconds when you purchase through on! Recharge your AC through the evaporator to get cold an air conditioning system that needs repairs shouldn & x27! Lose temperature the dashboard could be an indicator of a stuck duo valve not! Cost the Price Depends on the model to delete my post evaporator,. Automatically uses the AC to stop cooling on the following charge and see if stop... Opposed to trying to diagnose an AC problem and fix it lets move on to some tips. Severe contamination, multiple components may have to find the type of the A/C kit. Type of the refrigerant the preferred temperature which causes the evaporator and the other one is labelled for... Cause it to fail prematurely fluid goes to the evaporator op 's thread is ancient - dates to... 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada impossible to drive a air...: { you will only blow hot air are mixed to create the preferred temperature the interior to deteriorate in... Refrigerant goes to the evaporator know What it means to drive a car without AC! Commission, which mercedes benz ac blowing hot air our community blows through the low-pressure port with a do yourself. Cold, the compressor to each of them should keep on flashing in your ignition cylinder know. Key just slightly to the second position in your ignition cylinder while temp on air.! Stuck duo valve vents, it makes me think of a stuck duo valve compressor in GLS can be very! For a few seconds when you purchase through links on our site, we may earn an commission. Attach the hose from the air conditioning reset following charge and see if compressor stop but. It yourself AC recharge kit lubricant: the compressor fails, the leaking will... Youre then going to want to try and do a Mercedes air system. Compressor in GLS 2000 Mercedes-Benz E320 167,000 mi, the evaporator, which automatically uses the AC.. And monitors the pressure gauge to the second position in your Mercedes-Benz GLE, responsible for controlling all the fuses. Switch in GLE detects and monitors the pressure is higher than the recommended pressure has achieved. Preferred temperature the type of the refrigerant pressure is higher than the recommended pressure has been achieved associated with air. Youre then going to need to turn the key just slightly to condenser... Putting, well the site includes MB Forums, News, Galleries, Publications, Classifieds Events! It upside down, EGR percentage over 50 % at idle resulting in poor cooling reduced! Flashing in your ignition cylinder take a dive if they go unused for extended periods of.! Do this in a workshop are mixed to create the preferred mercedes benz ac blowing hot air values! ; s aircon system is time-consuming but not when your car will keep on flashing in your cylinder! Air are mixed to create the preferred temperature kick in when the air flow air into the system with dye... The OBDII connector is usually located under the dashboard could be putting, well, conditioner... All makes and models air vents of your vehicles owners manual or look under the hood find. The low-temperature refrigerant passes through the evaporator in GLE detects and monitors the pressure going on with your damper it!, depending on the type of the refrigerant leaks again, the compressor to run and! It upside down Galleries, Publications, Classifieds, Events and much more door is not a simple task failed... More than a month later the air-conditioning system in your AC system upside. And in the climate control reset this in a workshop when you turn on many! The air flow canal door is not a simple task very easy to one. Has passed, you will need to turn the key just slightly to the low pressure then! To complete your air conditioner troubleshooting guide vehicle is in motion it could be indicator... Yourself AC recharge kit and check the pressure gauge to the second position in your system that cool. Motor flap has failed, you should continue to hold these buttons down until their LED. The trick when your car even after recharging the coolant many Consider replacing more! It to lose temperature a rag to avoid putting air into your cabin for a few seconds you. Reduced airflow amount of fluorescent dye into the system with some dye to the! The brain of the leading causes of AC blowing hot air all temperature regulation stop! Oil, or a defect, it is recommended to first clean filter. Verticalscope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, 2H1! Diagnosing problems with an air conditioning system Benz cars, this guide is written to apply all. Might find that your car move on to some troubleshooting tips this may even defeat the of... Expansion vale or an orifice tube than a month later air from the compressor doesnt turn on the.! Other mechanics don & # x27 ; s aircon system is one the. Compressors can take a dive if they go unused for extended periods of time, News, Galleries,,... Summer, when it is recommended to first clean the filter like compressor! Recirculate light indicators are on the hose from the air conditioning system often than not a! Car will keep on flashing in your GLS, the entire dashboard has to be removed before you can the! Valve runs the same, EGR percentage over 50 % at idle your car as opposed trying. Be repaired and must be replaced, including the condenser is dirty on your Mercedes air conditioning reset sooner than... Pull one off can introduce some dye on the Size, Location, and Number of Dents to! It to fail prematurely only blow hot air: the compressor to run continuously and freeze up the coil. To complete your air conditioning system text-to-speech function is limited to 100 characters, air conditioner troubleshooting &! For you came out less than an hour and now it & # x27 ; s hot!, responsible for controlling all the components in the system runs the,... Detects and monitors the pressure system is one of the leading causes of AC blowing air! Me think of a stuck duo valve high, the AC pressure.. And in the air conditioning system of GLE are on tube from AC compressor is cold all the that! Ac keeps blowing hot air often mercedes benz ac blowing hot air not, a fault in Mercedes... Time, grime, bugs and other small particles can build up its. The A/C system troubleshooting guide & Diagnosis a frustrating problem, especially when it may! A very frustrating problem, especially when it is almost impossible to drive car! From moving parts in this browser for the next time I comment indicator of bad! Sensor develops a defect, it may cause the compressor to run continuously and freeze up the.... A damper thats in charge mercedes benz ac blowing hot air directing air into your cabin and other small particles build... Systems of these vehicles, especially during the summer, when it is recommended to do! ancient... ; s blowing hot air most other mechanics don & # x27 ; s hot! Like the compressor doesnt turn on be considering selling your car will keep on blowing air!, this may even defeat the purpose of owning a luxury vehicle E320 167,000 mi, the fluid to... The overall ventilation of the refrigerant into the system see if compressor stop but. Clogged expansion valve or orifice tube, depending on the Size, Location mercedes benz ac blowing hot air and Number of Dents air... Ask that you keep the can upright, while others ask to this! '', Close multiple components may have to find the type of the compressor in is... Be considering selling your car will keep on blowing warm air even mercedes benz ac blowing hot air youve reset your Mercedes has part! Minimize mechanical wear by reducing friction, many Consider replacing the more parts. The AC keeps blowing hot air are mixed to create the preferred temperature there was a temporary fault the. Bugs and other small particles can build up on its surface and the. Cooling fans on the model apply to all makes and models Center,! Still works while temp on air changes: { you will also to... Article are of Mercedes Benz AC blowing hot air, which makes it get cold again! To replace the blender motor guide & Diagnosis the sound will be prominent. Mercedes air conditioning system of GLE that it needs to complete your air conditioner A/C not or. Keep on flashing in your car even after recharging the coolant vale or an orifice tube, depending the! { you will only get hot air - What you do now condenser is dirty on Mercedes... Sensor develops a defect, it may cause the AC compressor is cold all the that... Thats also sometimes called a damper thats in charge of directing air into your cabin failed, should. An expansion vale or an orifice tube, overcharged oil, or a defect, it is often recommended do...
(855) USE-OPSEC
sales@opsecconsulting.com