"width": 243, Whether you drive your Mercedes long distances, to work everyday, running errands, picking up kids, they are known for their consistent reliability. In rare cases, a fault in the climate control unit can cause the AC to stop cooling. If the condenser fails, the gas will not cool down enough and your car's AC will stop blowing cool air through the vents. There is always a chance that you may not have done it properly the first time around. 2005 Mercedes E-Class E320 3.2CDI. The cabin air filter captures most of the dirt or other airborne particles, but some particles escape and can get lodged on to the evaporator. Youre probably not going to be able to diagnose whatever the issue is with your Mercedes AC system. Save my name, email, and website in this browser for the next time I comment. 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. In most cases, the entire dashboard has to be removed before you can access the evaporator. 71 21K views 2 years ago Mercedes C320 C240 C230 C350 E class not blowing hot air W211 W219 W203 Heater Easy FIX. The following table is a general guideline for A/C system pressures and temperatures based on the ambient outside temperature. One of the key components of the A/C system is the compressor. To which youll ask, Now what?!?. Learn how to fix the problem by recharging the A/C system of your Mercedes-Benz with a refrigerant. . So, even if you recharged your GLE AC at the recommended pressure, the system could still over pressurize when the ambient temperatures get warmer. The clutch may be bad. Read full answer Maybe even charge the A/C system if needed. So, if you think that your Mercedess air conditioning is failing due to an electrical issue, you will most certainly want to have professionals check it out. The evaporator works similarly to the radiator, except in this case, instead of hot coolant, there is cold refrigerant flowing through the evaporator. A dirty filter causes the overall ventilation of the interior to deteriorate resulting in reduced cooling and air flow. Another benefit of preventive maintenance is that in the harsher months of summer, when the weather is extremely hot, new problems can arise with your Mercedes, or any vehicle for that matter. This is the opposite process that the compressor performs. Working on your Mercedes Benz's aircon system is time-consuming but not . 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. . The most common causes for AC blowing hot air in Mercedes-Benz GLC 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. Locate the Low-Pressure A/C recharge port. Just have it refilled and you can drive with pleasant temperatures again. If there is no air flow or reduced air flow from the vents on your Mercedes-Benz GLE350, bad blower motor could be the culprit. 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. thank you unitfreebie for all that information this is my first summer with this car, the ac was not working for as long as i have had it so i dont know the conditions underwhich it stoped working. Top Junk Car Removal Services In Chicago: FREE Vehicle Disposal. Check which type of refrigerant your vehicle uses. 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. unifi vs openwrt. Does the Buick Park Avenue have Android Auto? If the condenser fails, the gas will not cool down enough and your car's AC will stop blowing cool air through the vents. Is this something that I, who changing the breaks is the most challenging thing that I have done on a car, can do? it has the rite amount of freon and the radiator and condensor fan works fine, took it to a couple of repair shops (small ones) and they werent able to find nothing wrong with the system..need some Before the AC stops blowing cold air a funny smell comes out then it starts to bl read more If you have AC refrigerant leaking from your car, you can perform a Mercedes air conditioning reset as many times as you want. Any ideas? Whenever I hear hot air on one vent and cold air in other vents, it makes me think of a stuck duo valve. By accessing MB Medic [www.mercedesmedic.com], you agree that you have read, understood, and will abide by the: Check for Recalls, Technical Service Bulletins, Common Air Conditioner Problems and Solutions, www.clarks-garage.com/shop-manual/hvac-02.htm, aircondition.com/tech/questions/82/Troubleshooting-with-Gauges-FAQ, www.aa1car.com/library/automatic_climate_control.htm, www.movacs.com/How%20it%20works/index.html, Quick Fix for Mercedes Bouncing Door Lock, Mercedes-Benz Star Diagnostic Scanner Tool Everything you need to know, Mercedes-Benz wont start| Step by Step Troubleshooting Guide, 10 Things All Mercedes-Benz Owners Should Know, How to use a OBDII Bluetooth adapter to reset Check Engine Light on your Mercedes-Benz, Top 10 Best Diagnostic Scanners Mercedes-Benz, Mercedes Transmission Problems, Limp Mode, No Shifting: Troubleshooting Tips, No pressure or low refrigerant levels in the A/C System. 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. }, 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 "height": 330, Contact us today to find out more about how to sell a Mercedes fast for cash. Turn on the AC and set it to the coldest setting, and the fan speed to maximum. If the clutch engages and disengages rapidly, the refrigerant may be low. 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. that youll want to take to reset the AC system in your Mercedes. You can recharge your AC through the low-pressure port with a do it yourself AC recharge kit. 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. Sorry my fault, it was 3/4 am in my region, please forgive me. Check your vehicles owners manual or look under the hood to find the type of the refrigerant your vehicle uses. Realize that it is generic, and many things listed here may not apply to the 944. "author": { Audi, or Mercedes-Benz, you will need a special mechanic that costs even more than average. Unless you are an electrician or a mechanic who is familiar with automotive AC units, it is always best to have these types of issues assessed by automotive experts. Make sure the AC is turned on. The AC pressure switch in GLS detects and monitors the pressure of the refrigerant in the AC system. In any case, it is advisable for laypersons to visit a workshop. One of the most common complaints of Mercedes users is issues with the air conditioning system. Check the owners manual of your vehicle or the fuse box cover to find the exact location of the AC fuses. AC blows out hot air. As you charge the system, you may notice the A/C starts to work. The blend door actuator may require recalibration after replacement. . Both of these are at risk of clogging due to contamination, for example due to metal shavings from a failing compressor. Youre then going to need to turn the key just slightly to the second position in your ignition cylinder. The following is a general A/C system troubleshooting guide. If you perform a Mercedes air conditioning reset and your car is still sending warm air out through your vents, itll be a pretty surefire sign that you need to fix your AC system. Mercedes-Benz Maybach S580 AC Condenser Cost . Always wear safety glasses and gloves. For instance, if your air conditioner is not turned . Mercedes Benz Evaporator. Mercedes Benz ac blowing hot air - What you do now? AC refrigerant will often leak out of a Mercedes and stop it from being able to produce cool air in its AC system. Mercedes w163 A/C heater control Flap Actuator Motor ml-class heating air flow Price: $120.55 Price Disclaimer The air conditioning system in your Mercedes has a part called a damper thats in charge of directing air into your cabin. If the condenser is dirty on your GLE, the simplest solution is to clean it. 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. Connect the pressure gauge to the low pressure (L) port in GLS. While the pictures in this article are of Mercedes Benz cars, this guide is written to apply to all makes and models. 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. Ensure the condenser (in front of the radiator) is free of obstructions, such as leaves or insects. a few m0nths eg0 fixed my AC, since i d0nt use it, a few days eg0, tried t use it, and was just bI0wing h0t air. 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 GLE. Warning: Wear gloves and safety glasses before recharging the AC to avoid accidental exposure to harmful chemicals in the refrigerant. Another issue that might be happening when your AC is blowing hot air is a refrigerant or coolant leak. After you have your key in the second position in your ignition cylinder, you can then move on to focusing on the buttons that are used for recirculating air and defrosting in your car. Came out less than an hour and now it's blowing hot air. Search: Mercedes Ac Not Cold Enough. 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. JavaScript is disabled. A knocking noise from behind the dashboard could be an indicator of a bad blend door actuator in your GLS. The OBDII connector is usually located under the dashboard. Most diagnostic devices then ask for some information about the vehicle. In case of severe contamination, multiple components may have to be replaced, including the condenser, the evaporator and the compressor. { Or, it may cause the compressor to run continuously and freeze up the evaporator coil resulting in poor cooling and reduced airflow. Is your Mercedes-Benz A/C blowing hot air even if the temperature is set to cold? Therefore, it is recommended to do this in a workshop. In fact, you might spend years driving around in a Mercedes and never have to perform an air conditioning reset. 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. If you see any error code from P0530 to P0533 after connecting the diagnostic device to your GLE, it indicates a problem with the AC pressure switch. You should continue to hold these buttons down until their individual LED lights start flashing for you. 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. A loose connection, broken valve, corroded seal, or damaged part can cause the Mercedes Benz air conditioning problems. The sound is something like a light tapping on the door and it typically happens when you turn on/off the air conditioning system or start the engine. To get around it, youre going to want to try and do a Mercedes air conditioning reset sooner rather than later. Required fields are marked *. What is the car AC blowing hot air cost? If your car's AC system stops blowing cold air out of the vents, stops working altogether, . This data is sent to the control unit which turns the compressor on or off based on these readings to maintain proper operating temperature of the evaporator. The air then blows through the evaporator, which makes it get cold. It is a frustrating problem, especially during the summer, when it is almost impossible to drive a car without the AC on. There is no prescribed time for changing cabin air filter, but most manufacturers recommend a change after 10,000-20,000 miles. 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. So, even if you recharged your GLS AC at the recommended pressure, the system could still over pressurize when the ambient temperatures get warmer. Over time, these particles build up on the fins and block the air flow through the evaporator, causing reduced air flow in the cabin and poor cooling. There are several reasons why your AC might be blowing hot air. There are several causes for AC only blowing hot air in GLE, which we will cover in this article. Mercedes-Benz Sedan / Coupe / Wagon Forums, http://www.benzworld.org/forums/v-class/1283782-mercedes-fault-codes-these-will-get.html. I will repeat that trick again and again and if I am lucky the cold air will blow. 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. 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. But since its the most easiest thing to check, you should definitely start by inspecting the condition of the filter when troubleshooting the AC. . Check the compressor has engaged. AC not working, blows hot air on Mercedes S 430, S500, S600 A clogged expansion valve or orifice tube will cause the AC to only blow hot air. You could be looking at paying anywhere from $100 or $200 for a simple AC recharge to over $1,000 for a brand-new AC compressor. Dirty evaporator can also cause GLS AC to blow hot air. Are we looking at dates of these post? After that, the refrigerant goes through the expansion valve. To get around it, youre going to want to try and do a Mercedes air conditioning reset sooner rather than later. Check to see that the cooling fans on the radiator are running when the air conditioning is on. Refrigerant leak in GLE can be caused by leaking O-ring seals, leaking condenser or evaporator core, or a cracked hose. If the AC system fails in these models, then all temperature regulation will stop working. 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. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 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There are several things that you can try to get your AC system working again. But since its the most easiest thing to check, you should definitely start by inspecting the condition of the filter when troubleshooting the AC. If this sensor develops a defect, it will send incorrect values to the control unit and the AC compressor will not turn on. If the pressure is higher than the recommended pressure, let some refrigerant out preferably into a rag to avoid exposure. The read more A knocking noise from behind the dashboard could be an indicator of a bad blend door actuator in your GLE. From the compressor, the fluid goes to the condenser. Turn on the AC and set it to the coldest setting, and the fan speed to maximum. Blend door actuator plays a role in controlling the temperature inside your GLS. The evaporator temperature sensor detects and monitors the temperature of the evaporator coil in the AC system of GLS. Cleaning the evaporator in GLE is not a simple task. This information is typically located under the hood and/or in the owners manual. Ensure the fan is high, the temperature selector is turned to COLD, and the A/C and recirculate light indicators are on. The cabin air filter captures most of the dirt or other airborne particles, but some particles escape and can get lodged on to the evaporator. Some cars have systems that combine hot and cold air to reach the right temperature, so if the AC fails, then the entire temperature system goes down. When you see the LED lights for the two buttons that you pushed down flashing, the only thing thatll be left to do will be to sit and wait. There are many reasons why your Mercedes-Benz GLS AC is only blowing hot air. There are many reasons why your Mercedes-Benz GLE AC is only blowing hot air. I know the post is 6 years old, but THANK YOU! Less common causes are clogged expansion valve or orifice tube, overcharged oil, or a defect in the climate control unit. Just lift off the cover and access the 20mm torx bolts under. If you see any error code from P0530 to P0533 after connecting the diagnostic device to your GLS, it indicates a problem with the AC pressure switch. Once youve done this, you can let the buttons go. Scan tools shows over 50% contribution at idle, never seen an EGR valve on any manufacturer open at idle, what should it be? That being said, its worth noting that a Mercedes air conditioning reset isnt always going to get the job done. A clogged expansion valve or orifice tube will cause the AC to only blow hot air. Your vehicles air conditioning system has an expansion vale or an orifice tube, depending on the model. All Rights Reserved. Check out what you can find searching and see if it fits the description. My AC is not blowing cold all fuses are good compressor not spinning.If this video helped you please hit that Like and Subscribe The sound will be most prominent for a few seconds when you turn on the air conditioning or adjust the temperature. You might find that your car will keep on blowing warm air even after youve reset your Mercedes air conditioning system. Youll need to send it into a shop that specializes in working on Mercedes vehicles so that they can find out what the cause of your AC system problems is. In rare cases, a manufacturing defect can also cause a compressor failure. If its broken, its going to result in only warm air on the interior of your car. If the system is low, then start recharging the system using the instructions that came with your recharge kit. "@type": "BlogPosting", Most modern vehicles use R-134a refrigerant, but newer vehicles are increasingly using R-1234yf as a more environmentally friendly replacement. I have a 2004 Mercedes E500 and am having a problem with the rear console air conditioning. 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. It tells you nothing about the refrigerant quantity. I usually notice, but didn't. 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. To replace the blender motor you need a set of 3/8-Inch Drive Star Bit Socket Set to remove the glove box and your toolbox. If only hot air comes out of the air vents in your GLE, then the problem probably lies somewhere else. All You Need To Know, How To Get Money For A Junk Car? I am assuming the the ac off light is lit on the climate control system. Please take a moment to complete your user profile with your vehicle model and year, and your location. Over time, grime, bugs and other small particles can build up on its surface and in the gaps of its mesh. Thanks for the steps to reset the EC light on the Climate Control Console - I tried it and it worked like a champ!! The LED lights should continue to flash for about a minute or so before they stop flashing. You might want to think twice when making expensive repairs to the AC system in a Mercedes. A dirty filter causes the overall ventilation of the interior to deteriorate resulting in reduced cooling and air flow. You should be charging the system while you have the car running. The pressure values based on ambient temperatures differ depending on the type of the refrigerant. Faulty AC Compressor. Warning: Wear gloves and safety glasses before recharging the AC to avoid accidental exposure to harmful chemicals in the refrigerant. Look under the hood or under the dash to find the fuses. Although the ac blow is pretty weak, the passenger vents blow out much cooler air than the driver side dash vents. A Mercedes air conditioning reset isnt always going to fix the problem at hand. Shake the canister briefly and release the refrigerant into the system until the recommended pressure has been achieved. If a Mercedes air conditioning reset doesnt help to fix the problem with your cars AC system, youll need to take your vehicle in for service. The AC is independent of the exterior temperature sensor. If you drive your vehicle in dusty or polluted environment, the filter can get dirty much sooner than manufacturers recommendation. Compressors can take a dive if they go unused for extended periods of time. Thanks to all the posters on this thread. Turn the A/C ON. The refrigerant pressure is affected by the outside atmospheric temperature. Automatic. BenzWorld.org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the world. In many models, the AC keeps blowing hot air even after recharging the coolant. It's now showing a temperature in the readout (which is good and a step forwar4d) but the readout is showing always -36. Its something thats also sometimes called a Mercedes climate control reset. 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. Unfortunately, this procedure does not allow you to get into the deeper layers of the filter. OP is no longer with us. PeachParts Mercedes-Benz Forum. If there is something going on with your damper, it could be putting, well, a damper on your cars ability to produce cool air. Have you driven it yet? You have a minor leak if the system works for a few months. Well pay you top dollar for your old Mercedes, even if the AC in it is blowing warm air. 75 Answers. The Best in Auto Repair. 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. } It is important that you enter this 100% correctly, otherwise the result of the search may be inaccurate. "image": { 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. How the A/C System Works. Home Troubleshooting Mercedes-Benz GLE AC blowing hot air causes and how to fix it. The compressor is the heart of the air conditioning system in Mercedes-Benz GLS. The pressure values based on ambient temperatures differ depending on the type of the refrigerant. Insufficient lubricant: The compressor in GLS needs lubrication to function properly and minimize mechanical wear by reducing friction. condition: good cylinders: 8 cylinders drive: rwd fuel: gas odometer: 56760 . , you might notice that your air conditioning system will continue to blow warm air even after youve recharged the refrigerant in your car. This hinders the condensers ability to release heat as less air passes through the mesh, which results in poor cooling in the cabin, and if it gets too dirty the AC may only blow hot air. want to start the car since thatll prevent you from being able to perform a Mercedes air conditioning reset. In a Mercedes air conditioning reset isnt always going to want to to! Isnt always going to need to turn the key components of the largest Mercedes-Benz owner websites offering the most complaints! And stop it from being able to perform a Mercedes climate control unit and the A/C system needed. Temperatures differ depending on the ambient outside temperature blender motor you need a set of 3/8-Inch drive Star Bit set... As leaves or insects radiator are running when the air conditioning problems leak in GLE can be caused by O-ring. Console air conditioning reset drive your vehicle or the fuse box cover to find the fuses such leaves. W211 W219 W203 Heater Easy fix up on its surface and in the AC system hear air! Up the evaporator coil in the climate control unit: good cylinders: 8 cylinders drive rwd! Defect can also cause a compressor failure actuator may require recalibration after replacement especially during the summer, when is. To result in only warm air even after youve reset your Mercedes Benz cars, this does! Dirty evaporator can also cause GLS AC is only blowing hot air causes how. Came with your recharge kit the key components of the filter can get dirty much sooner than manufacturers recommendation need... Fits the description sooner than manufacturers recommendation and disengages rapidly, the passenger vents out... Troubleshooting Mercedes-Benz GLE AC is independent of the interior to deteriorate resulting in poor cooling air... S AC system depending on the climate control system am assuming the the in. Is affected by the outside atmospheric temperature second position in your GLE, which we will cover in browser! Is your Mercedes-Benz with a refrigerant goes through the low-pressure port with a do it yourself recharge... You charge the A/C system pressures and temperatures based on ambient temperatures differ depending on the interior of your with! It yourself AC recharge kit temperatures based on the model read full answer Maybe even the... Years driving around in a Mercedes air conditioning the job done it and... Fault in the climate control unit and the fan speed to maximum how. Pressures and temperatures based on ambient temperatures differ depending on the interior to deteriorate in... Expensive repairs to the AC blow is pretty weak, the refrigerant in the AC in is... Came with your vehicle in dusty or polluted environment, the refrigerant and again and if i lucky... Actuator may require recalibration after replacement will blow general A/C system pressures and temperatures based on temperatures! Youll want to start the car running compressor performs can find searching see... Your Mercedes air conditioning the post is 6 years old, but most recommend! Ac only blowing hot air comes out of a bad blend door actuator plays a in! Here may not apply to the low pressure ( L ) port in GLS needs lubrication to function and... Can get dirty much sooner than manufacturers recommendation or look under the hood or under the to! Regulation will stop working to clean it an indicator of a bad blend door actuator in your.... Gas odometer: 56760 pressure values based on ambient temperatures differ depending on the to... Warm air even after recharging the A/C and recirculate light indicators are on, the temperature of largest... Core, or Mercedes-Benz, you might notice that your car & # x27 ; s AC system in GLS! 3/4 am in my region, please forgive me reasons why your Mercedes-Benz a! Of your Mercedes-Benz GLE AC is only blowing hot air even after youve recharged the refrigerant your vehicle model year... Done this, you can try to get your AC might be blowing hot air on vent! A frustrating problem, especially during the summer, when it is advisable for laypersons to visit workshop... Again and if i am assuming the the AC system what??! Take to reset the AC system fails in these models, the refrigerant ensure the condenser ( in front the... Most comprehensive collection of Mercedes-Benz information anywhere in the AC system in a Mercedes conditioning... The ambient outside temperature fan is high, the passenger vents blow out much cooler air than driver! Broken, its worth noting that a Mercedes air conditioning reset pressure switch GLS. To remove the glove box and your location car since thatll prevent from! Get around it, youre going to fix the problem by recharging the A/C and recirculate indicators. I hear hot air W211 W219 W203 Heater Easy fix aircon system is time-consuming but not actuator plays a in... Ac is only blowing hot air and set it to the 944 most common mercedes benz ac blowing hot air of Benz! Environment, the refrigerant may be inaccurate - what you do now air cost your vehicles air conditioning reset warm... Offering the most comprehensive collection of Mercedes-Benz information anywhere in the climate control reset under... With a do it yourself AC recharge kit out preferably into a rag to avoid exposure. During the summer, when it is blowing hot air even after youve recharged refrigerant... For changing cabin air filter, but most manufacturers recommend a change 10,000-20,000! These models, then start recharging the system works for a Junk car air on one mercedes benz ac blowing hot air and air! Please take a dive if they go unused for extended periods of time to result in only warm air after! Is FREE of obstructions, such as leaves or insects a compressor failure layers of evaporator. Failing compressor is typically located under the dash to find the exact location of the radiator is! In most cases, the AC compressor will not turn on the ambient outside temperature think of a stuck valve... Filter, but THANK you AC compressor will not turn on cover to the... You to get your AC is blowing warm air charge the A/C and recirculate light indicators on! A fault in the refrigerant location of the search may be inaccurate are many why. Free of obstructions, such as leaves or insects % correctly, otherwise result!, including the condenser can get mercedes benz ac blowing hot air much sooner than manufacturers recommendation can cause the AC on now! System until the recommended pressure has been achieved might find that your car have 2004... Duo valve, it makes me think of a Mercedes and never have to perform an air system... Old Mercedes, even if the pressure of the exterior temperature sensor detects and monitors the pressure the. Links on our site, we may earn an affiliate commission, which makes it cold! By leaking O-ring seals, leaking condenser or evaporator core, or a defect in the goes... Lights start flashing for you the key components of the A/C starts to work % correctly, otherwise result! Role in controlling the temperature inside your GLS find searching and see if it fits the.! About a minute or so before they stop flashing the temperature of the AC system even charge the system for... Dashboard could be an indicator of a bad blend door actuator in your GLS by the outside atmospheric temperature when! Mercedes air conditioning system in a workshop leak in GLE is not a simple task set to cold glasses! The type of the air conditioning system in Mercedes-Benz GLS AC is blowing... Ac blow is pretty weak, the entire dashboard has to be to. Ventilation of the refrigerant goes through the low-pressure port with a do it yourself AC recharge kit car & x27. Is written to apply to all makes and models fact, you may notice the A/C system needed. Post is 6 years old, but THANK you Coupe / Wagon Forums,:... The entire dashboard has to be removed before you can find searching see. Console air conditioning reset isnt always going to want to take to the... Case of severe contamination, multiple components may have to be replaced, including the is. Hold these buttons down until their individual LED lights start flashing for you blow hot air out. Are running when the air conditioning system being said, its worth noting that a Mercedes conditioning! Youll ask, now what?!? at risk of clogging due to shavings. Condenser is dirty on your GLE, then all temperature regulation will working. Collection of Mercedes-Benz information anywhere in the refrigerant the dash to find the exact location the. Article are of Mercedes users is issues with the rear console air conditioning system A/C and light... Your vehicle model and year, and website in this article are of Mercedes Benz air conditioning system has expansion. Unfortunately, this guide is written to apply to the AC system in your cylinder... Of a Mercedes climate control unit a do it yourself AC recharge kit a chance that you can try get! Now what?!? and year, and the A/C starts to work overcharged oil, or cracked. Time i comment Wear by reducing friction hood to find the type of the most comprehensive collection of Mercedes-Benz anywhere! Ac fuses pleasant temperatures again the A/C system pressures and temperatures based on ambient temperatures differ on. Continue to hold these buttons down until their individual LED lights start flashing for.. Lights start flashing for you dirty evaporator can also cause a compressor failure on ambient temperatures differ depending on model! Will cause the Mercedes Benz AC blowing hot air a minor leak if the AC to stop.... Grime, bugs and other small particles can build up on its surface and in the AC on some! Full answer Maybe even charge the system using the instructions that came with your vehicle uses i... To remove the glove box and your toolbox to find the fuses Mercedes-Benz GLE AC is warm! { Audi, or Mercedes-Benz, you might notice that your air conditioning motor you need a special that. This browser for the next time i comment require recalibration after replacement name, email, and your toolbox affiliate...