There are two ports in the air conditioning system of GLE. , you might notice that your air conditioning system will continue to blow warm air even after youve recharged the refrigerant in your car. In any case, it is advisable for laypersons to visit a workshop. So, even if you recharged your GLS AC at the recommended pressure, the system could still over pressurize when the ambient temperatures get warmer. Its the simplest way to sell an older car in a hurry without having to put in too much effort on your part. 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. If it's a newer Benz, find someone that can pull the settings from the onboard computer. PeachParts Mercedes-Benz Forum. If the system works but only for a short time, again, you have a leak that you need to locate and repair. Mercedes-Benz Sedan / Coupe / Wagon Forums, http://www.benzworld.org/forums/v-class/1283782-mercedes-fault-codes-these-will-get.html. Thermostat and Valve issues with heater blowing cold air. This is the opposite process that the compressor performs. 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 From here, the refrigerant goes to the evaporator. Answered by FixItMan in 2 mins 8 years ago FixItMan Auto Mechanic the AC system in my 2003 Mercedes-Benz is blowing only hot air. The refrigerant pressure is affected by the outside atmospheric temperature. You might find that your car will keep on blowing warm air even after youve reset your Mercedes air conditioning system. Its essentially a way for you to restart your Mercedes air conditioning system to see if its able to clear up any issues that you might be having with it. Its essentially a way for you to restart your Mercedes air conditioning system to see if its able to clear up any issues that you might be having with it. "logo": { In order to find electrical problems, it usually requires advanced technology and mechanical equipment that most car owners dont have available to them. This happens to protect the 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. 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. 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. To begin troubleshooting, you must first connect the diagnostic tool to your GLE. 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. 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. "width": 710 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. 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. You can rinse the condenser clean with a garden hose. 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. To get around this issue, you can turn on the defroster, which automatically uses the AC component. 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 . The evaporator works similarly to the radiator, except in this case, instead of hot coolant, there is cold refrigerant flowing through the evaporator. 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. At the end of the day, the most common problem that Mercedes owners face when it comes to their air conditioning systems is an AC refrigerant leak. 2022 Cash Cars Buyer. 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 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. The Fora platform includes forum software by XenForo. If the compressor fails, the AC will only blow hot air. Outside temperature updates only when vehicle is in motion. 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. 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. condition: good cylinders: 8 cylinders drive: rwd fuel: gas odometer: 56760 . 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. If the pressure is higher than the recommended pressure, let some refrigerant out preferably into a rag to avoid exposure. 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. Audi, or Mercedes-Benz, you will need a special mechanic that costs even more than average. Or, it may cause the compressor to run continuously and freeze up the evaporator coil resulting in poor cooling and reduced airflow. 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. There are many reasons why your Mercedes-Benz GLS AC is only blowing hot 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 GLE. "name": "Dells Service Center", 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 which youll ask, Now what?!?. Make sure the AC is turned on. It also helps to remove warm air from the cabin of your car to make space for cool air. It ran rough with EGR code, replaced EGR valve runs the same, EGR percentage over 50% at idle. When your Mercedes is blowing warm air after you recharge your coolant, When your Mercedes has one or more AC service lights lit up on the dashboard of your car, When your Mercedes seems to be experiencing some other problem with the AC system in it, Some Mercedes owners get intimidated when they think about the idea of performing a Mercedes air conditioning reset. 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. It is 2004 ML 350 Mercedes. Excessive oil can also reduce the performance of the compressor and can cause it to fail prematurely. Its only going to be effective if there was a temporary fault in your system that stopped your AC from working. 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. Attach the hose from the A/C Recharge Kit and check the pressure. . Turn the A/C ON. that youll want to take to reset the AC system in your Mercedes. If you own a Mercedes, then you know what it means to drive in true luxury. But there are going to be some instances in which you should give a Mercedes air conditioning reset a whirl to see if it gets your cars AC system up and running like normal again. There are several reasons why your AC might be blowing hot air. This information is typically located under the hood and/or in the owners manual. 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. Common Air Conditioner Problems and Solutions For instance, if your air conditioner is not turned . Thanks for the steps to reset the EC light on the Climate Control Console - I tried it and it worked like a champ!! 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 leak can be diagnosed by injecting small amount of fluorescent dye into the AC 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. Insufficient lubricant: The compressor in GLS needs lubrication to function properly and minimize mechanical wear by reducing friction. Compressors can take a dive if they go unused for extended periods of time. "@type": "Person", the system is charged, but the compressor is not Ask an Expert Car Questions Mercedes Repair Marty, Mercedes Technician 57,141 Satisfied Customers Bosch Certified Master Tech. From the compressor, the fluid goes to the condenser. Mercedes w163 A/C heater control Flap Actuator Motor ml-class heating air flow Price: $120.55 Price Disclaimer 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. Put pressure into a fluid you will increase its temperature. 2001 Mercedes-Benz E320 60,000 mi, Visitor. It is important that you enter this 100% correctly, otherwise the result of the search may be inaccurate. This can happen due to a leak or if the AC has not been recharged for a long time. 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. 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