This article will overview the A/C system, common problems, and repairs you can perform independently. 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. You will also have to find the leak to keep this from happening in the future. You should then turn your car off completely. "datePublished": "2017-07-13", at one time. 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. that youll want to take to reset the AC system in your Mercedes. Shake the canister briefly and release the refrigerant into the system until the recommended pressure has been achieved. Air conditioning/Heater work(s ) as expected blows cold/hot. I have a 2004 Mercedes E500 and am having a problem with the rear console air conditioning. The low-temperature refrigerant passes through the evaporator, which causes the evaporator to get cold. Leaks are the most common problem associated with the air conditioning system. and well respond with an offer almost on the spot. 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. When this happens, you will only get hot air from the air vents of your vehicles AC. You do. "@type": "ImageObject", Its the simplest way to sell an older car in a hurry without having to put in too much effort on your part. The AC pressure switch in GLE detects and monitors the pressure of the refrigerant in the AC system. Cleaning the evaporator in GLS is not a simple task. Quick And Easy Junk Car Removal: Cash Cars Buyer. 2001 Mercedes-Benz E320 60,000 mi, Visitor. Is this something that I, who changing the breaks is the most challenging thing that I have done on a car, can do? Note: Dirty cabin air filter mostly only leads to reduced cooling. Most diagnostic devices then ask for some information about the vehicle. This, unfortunately, isnt always easy to do! It is a frustrating problem, especially during the summer, when it is almost impossible to drive a car without the AC on. 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. 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. Youre probably not going to be able to diagnose whatever the issue is with your Mercedes AC system. Most refrigerants include a leak sealer that will seal small leaks in addition to filling the R134a freon. The compressor could be disengaged because the system does not have enough refrigerant pressure to trip the low-pressure cutoff switch that cycles the compressor. The evaporator works similarly to the radiator, except in this case, instead of hot coolant, there is cold refrigerant flowing through the evaporator. . Find a Shop. If only hot air comes out of the air vents in your GLS, then the problem probably lies somewhere else. why your car might be blowing warm air instead of cool air. 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. "@id":"https://dellsservicecenter.com/mercedes-air-conditioner-blowing-hot-air-what-to-do" Its something thats also sometimes called a Mercedes climate control reset. You have a minor leak if the system works for a few months. 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. One of the most common complaints of Mercedes users is issues with the air conditioning system. . But if its getting up there in age, you might be better off getting rid of it rather than spending a small fortune on AC repairs. From the compressor, the fluid goes to the condenser. Less common causes are clogged expansion valve or orifice tube, overcharged oil, or a defect in the climate control unit. "mainEntityOfPage":{ This could be dangerous and cause problems to your A/C system. Most modern vehicles use R-134a refrigerant, but newer vehicles are increasingly using R-1234yf as a more environmentally friendly replacement. A professional mechanic can swiftly diagnose the poor AC cooling issue for you. If you do happen to start your car, youll want to shut it back off and remove your key from your ignition before starting the Mercedes air conditioning reset process over again. 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 ? Due to the complexity of the replacement job, it is not recommended as a DIY project. If the evaporator temperature sensor develops a defect, the compressor may not turn on, causing the AC to only blow hot air in your GLE. May 23, 2014. Your AC recharge kit will not work; it doesnt fit on the high-pressure port. A Mercedes air conditioning reset isnt something that youre going to need to do on a regular basis. This will give your Mercedes the time that it needs to complete your air conditioning reset. 10 Factors To Consider, 10 Tips For Finding The Best Junk Car Removal Deals, 10 Steps To Sell A Junk Car Without A Title: Get The Best Deal, How To Negotiate The Best Price For Your Junk Car? 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. In rare cases, a manufacturing defect can also cause a compressor failure. You do not want to start the car since thatll prevent you from being able to perform a Mercedes air conditioning reset. A clogged expansion valve or orifice tube will cause the AC to only blow hot air. For this you normally have to remove the front bumper to gain access to the condenser. Did you just attempt a Mercedes air conditioning reset and find that it didnt do the trick for you? Mercedes Benz ac blowing hot air - What you do now? If you drive your vehicle in dusty or polluted environment, the filter can get dirty much sooner than manufacturers recommendation. 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 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. Youll need to work a little bit harder to diagnose whats going on with your AC system so that you can fix it. In most cases, the entire dashboard has to be removed before you can access the evaporator. Most cars are designed to have the radiator cooling fan kick in when the A/C is on. You should be charging the system while you have the car running. Heated seat. Be careful not to overcharge the system, either. The car has plenty of power and smoothes out off idle. 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. Once youve done this, you can let the buttons go. . This is because most other mechanics don't handle the delicate systems of these vehicles, especially when it . Please take a moment to complete your user profile with your vehicle model and year, and your location. While the pictures in this article are of Mercedes Benz cars, this guide is written to apply to all makes and models. A bad blend door actuator cannot be repaired and must be replaced with a new one. Check the fuses. It was blowing cold, wife turned the car off & went into the store . 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. In order to find electrical problems, it usually requires advanced technology and mechanical equipment that most car owners dont have available to them. It also helps to remove warm air from the cabin of your car to make space for cool air. Cleaning the evaporator in GLE is not a simple task. It also puts unnecessary strain on the entire AC system which negatively impacts the fuel consumption. Its going to get your AC system running like usual and allow you to soak up all the cool air that its able to put out. Is this a simple fix? 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. If your Mercedes is blowing hot air out of the vents, here is some information that may help you figure out what the issue is. 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. The evaporator works similarly to the radiator, except in this case, instead of hot coolant, there is cold refrigerant flowing through the evaporator. Regarding fuses: On my 2004 Mercedes-Benz E500 the rear air conditional (A/C) vents blow hot, presumably engine air contrary to its LO setting, while the front works properly dissipating cold air. 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. In rare cases, a fault in the climate control unit can cause the AC to stop cooling. Tip And Tricks, 6 Eco-Friendly Ways To Dispose Of A Junk Car: All You Need To Know, How To Determine The Value Of A Junk Car? Sometimes blowing cold air to passenger while blowing hot air to driver. Read full answer 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. 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 are several reasons why your AC might be blowing hot air. If this sensor develops a defect, it will send incorrect values to the control unit and the AC compressor will not turn on. To get around this issue, you can turn on the defroster, which automatically uses the AC component. If there is a problem with the temperature of the air conditioning system, it could be due to a bad blend door actuator. If the clutch engages and disengages rapidly, the refrigerant may be low. Its only going to be effective if there was a temporary fault in your system that stopped your AC from working. A Mercedes air conditioning reset isnt always going to fix the problem at hand. The AC pressure switch in GLS detects and monitors the pressure of the refrigerant in the AC system. . "@type":"WebPage", More often than not, a Mercedes air conditioning reset is going to do the trick when your car wont blow anything but warm air following a recharge. Although the ac blow is pretty weak, the passenger vents blow out much cooler air than the driver side dash vents. Check your vehicles owners manual or look under the hood to find the type of the refrigerant your vehicle uses. When looking for the reason, you should always start with the most obvious cause, insufficient amount of refrigerant. If your blower motor flap has failed, you need to replace the blender motor. How To Sell My Unwanted Car For Top Dollar? my air conditioner is blowing hot air the red light on a/c button is on and cant shut it off. This can be a very frustrating problem for many people! If only hot air comes out of the air vents in your GLE, then the problem probably lies somewhere else. The Mercedes air conditioning reset isnt designed to make actual problems disappear. 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. In some vehicle models, cold and hot air are mixed to create the preferred temperature. Mercedes-Benz E250 AC Condenser Cost . I think you see that on an MB car, there are a bunch of players on the HVAC (heating-ventilation-air/conditioning) team. How to replace an AC condenser. If the reading moves toward the normal range, continue until the system is charged. Replace AC compressor for MERCEDES-BENZ SL (R107) in case of defects or service life expiry. Dirty evaporator can also cause GLE AC to blow hot air. Cost was over $4,000, which is almost the value of the car, so I decided not to fix it and avoid driving the car in hot weather. The OBDII connector is usually located under the dashboard. If there is something going on with your damper, it could be putting, well. "@context": "http://schema.org", Check all the relevant fuses and relays related to the air-conditioning system in your GLE. If you have an Economy button, make sure that it is off. Ensure the fan is high, the temperature selector is turned to COLD, and the A/C and recirculate light indicators are on. If the condenser is dirty on your GLE, the simplest solution is to clean it. If you are only topping off the refrigerant in your Mercedes-Benz GLS 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. In any case, it is advisable for laypersons to visit a workshop. You can recharge your AC through the low-pressure port with a do it yourself AC recharge kit. Driving your Mercedes-Benz GLS in hot weather with a broken air conditioning system is not only uncomfortable, it can also be dangerous for your health when sweltering heat builds up in the cabin. "height": 330, Diagnosing problems with an air conditioning system can be very complicated. There is no prescribed time for changing cabin air filter, but most manufacturers recommend a change after 10,000-20,000 miles. Next, check the clutch itself. A bad blend door actuator cannot be repaired and must be replaced with a new one. SOURCE: Air conditioner blows hot on one side 1999 mercedes e320. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. A professional mechanic or technician should be consulted for any problems not covered below. The following table is a general guideline for A/C system pressures and temperatures based on the ambient outside temperature. , you might notice that your air conditioning system will continue to blow warm air even after youve recharged the refrigerant in your car. 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. Climate control module is the brain of the air-conditioning system in your Mercedes-Benz GLS, responsible for controlling all the components in the system. 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. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators . 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. Faulty AC Compressor. Just like with low refrigerant, the AC in GLS will blow warm air only if the AC system is overcharged with refrigerant. Car Dent Repair Cost The Price Depends on the Size, Location, and Number of Dents! A common symptom of a faulty blend door actuator in vehicles with dual zone climate control system is one side blowing hot air while the other side is blowing cold air. The read more Check which type of refrigerant your vehicle uses. Remove the cap from the low pressure service port labelled L, and connect the AC recharge kit. Regarding fuses: On my 2004 Mercedes-Benz E500 the rear air conditional (A/C) vents blow hot, presumably engine air contrary to its LO setting, while the front works . Thermostat and Valve issues with heater blowing cold air. How To Sell A Nonrunning Car For Cash? 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