Search this forum and you'll find the outside sensor location. "logo": { 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. As you charge the system, you may notice the A/C starts to work. 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. This could be dangerous and cause problems to your A/C system. 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. 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. 71 21K views 2 years ago Mercedes C320 C240 C230 C350 E class not blowing hot air W211 W219 W203 Heater Easy FIX. Therefore, it is recommended to do this in a workshop. The refrigerant pressure is affected by the outside atmospheric temperature. . The sound will be most prominent for a few seconds when you turn on the air conditioning or adjust the temperature. A professional mechanic can swiftly diagnose the poor AC cooling issue for you. 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. . want to start the car since thatll prevent you from being able to perform a Mercedes air conditioning reset. 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 happens to protect the system. 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. The LED lights should continue to flash for about a minute or so before they stop flashing. 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. This is where Cash Cars Buyer can step in and help! Next in the system is the receiver-drier, whose primary purpose is to remove moisture from the A/C refrigerant. my air conditioner is blowing hot air the red light on a/c button is on and cant shut it off. Firstly, your air compressor could be hitting a wall. 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. For decades, Mercedes-Benz has been the gold standard of high-end vehicles, and the drivers who invest in Mercedes are never disappointed. Most modern vehicles use R-134a refrigerant, but newer vehicles are increasingly using R-1234yf as a more environmentally friendly replacement. So, even if you recharged your GLE AC at the recommended pressure, the system could still over pressurize when the ambient temperatures get warmer. Some kits ask that you keep the can upright, while others ask to keep it upside down. "headline": "Mercedes Air Conditioner Blowing Hot Air: What to Do", 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. Check out. "dateModified": "2017-07-13", If you drive an older model Mercedes, you might notice that your air conditioning system will continue to blow warm air even after youve recharged the refrigerant in your car. Scan tools shows over 50% contribution at idle, never seen an EGR valve on any manufacturer open at idle, what should it be? If it's a newer Benz, find someone that can pull the settings from the onboard computer. Find the A/C fuse and make sure that it is not blown. A car air conditioning system that needs repairs shouldn't affect the rest of your 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. "datePublished": "2017-07-13", 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. Connect the pressure gauge to the low pressure (L) port in GLE. SOURCE: Air conditioner blows hot on one side 1999 mercedes e320. Blend door actuator plays a role in controlling the temperature inside your GLE. It is also cryogenic and can cause severe frostbite when it comes in contact with the skin. 2001 Mercedes-Benz E320 60,000 mi, Visitor. the AC system in my 2003 Mercedes-Benz is blowing only hot air. Turn on the AC and set it to the coldest setting, and the fan speed to maximum. unifi vs openwrt. 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. Junk Car Removal With No Title Required: Is It Possible? May 23, 2014. Remove the cap from the low pressure service port labelled L, and connect the AC recharge kit. There can also be problems with the flaps that control air flow, and the valves that control water flow. I know the post is 6 years old, but THANK YOU! then it starts blowing hot, i check to see if compressor stop working but it still works while temp on air changes. How to replace an AC condenser. "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." If you drive your vehicle in dusty or polluted environment, the filter can get dirty much sooner than manufacturers recommendation. I bought a low mileage 2002 s500 with full AMG last summer for my big "60". An overcharged system not only affects cooling performance but can also damage the compressor and sometimes can cause a major leak. The low-temperature refrigerant passes through the evaporator, which causes the evaporator to get cold. This is the essential operation of the A/C system, so lets move on to some troubleshooting tips. 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. This can happen due to a leak or if the AC has not been recharged for a long time. Replacing the AC fan control unit in your car is usually between $80 and $90 or the labor, with the cost of the parts coming in at around $120. Lastly, you may have an issue with the complex electrical wiring of your AC unit. 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. May just unplugged or maybe the sensor is gone. 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 . When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Another issue that might be happening when your AC is blowing hot air is a refrigerant or coolant leak. 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. Check the compressor has engaged. But-"Put in some stop leak". Charge the system via the low-pressure port with a Leak Detection Kit like this so you can find the leak. Start with the "AC stops blowing cold air" thread in the DIY sticky above, to extract trouble codes and current sensor values. Check all the relevant fuses and relays related to the air-conditioning system in your GLS. So, even if you recharged your GLS AC at the recommended pressure, the system could still over pressurize when the ambient temperatures get warmer. 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. The operation of the A/C in your car is based on the First Law of Thermodynamics if you want to learn the physics behind it. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Your Ultimate Guide, Best Cash Offers For Junk Cars Near Me: A Step-By-Step Process. 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. Does the Buick Park Avenue have Android Auto? In addition to the vehicle make, model, and engine type, you usually also have to type in the Vehicle Identification Number (VIN). 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. It tells you nothing about the refrigerant quantity. Check which type of refrigerant your vehicle uses. Automatic. I have a 2000 c230 compressor. You might want to think twice when making expensive repairs to the AC system in a Mercedes. The OBDII connector is usually located under the dashboard. 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. If the system works but only for a short time, again, you have a leak that you need to locate and repair. Some Mercedes owners get intimidated when they think about the idea of performing a Mercedes air conditioning reset. Youll also need to prepare to pay whatever its going to cost to fix your AC system. Bad AC pressure switch can be diagnosed with OBDII scanner. It also puts unnecessary strain on the entire AC system which negatively impacts the fuel consumption. Common A/C Problems This will let you know that youve held the buttons down for a long enough period of time. Faulty AC Compressor. Turn the A/C ON. Less common causes are clogged expansion valve or orifice tube . . It was completely dark (the display). 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. I'll bet you'll find one of the controls is 'o. You can rinse the condenser clean with a garden hose. Unfortunately, this procedure does not allow you to get into the deeper layers of the filter. Mercedes-Benz Maybach S580 AC Condenser Cost . 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. How soon you should get it serviced . Just have it refilled and you can drive with pleasant temperatures again. Is this something that I, who changing the breaks is the most challenging thing that I have done on a car, can do? This, unfortunately, isnt always easy to do! OP's thread is ancient - dates back to August, and the first reply was more than a month later. Is your air conditioner A/C not working or blowing hot air? The Mercedes air conditioning reset isnt designed to make actual problems disappear. For instance, if your air conditioner is not turned . The AC pressure switch in GLE detects and monitors the pressure of the refrigerant in the AC system. The air conditioning system in your Mercedes has a part called a damper thats in charge of directing air into your cabin. "url": "https://dellsservicecenter.com/wp-content/uploads/2017/07/Mercedes-AC-Blowing-Hot-Air.jpg", Cleaning the evaporator in GLS is not a simple task. Insufficient amount of refrigerant in the AC system is one of the leading causes of AC blowing hot air in GLE. 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. 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. 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. There is no prescribed time for changing cabin air filter, but most manufacturers recommend a change after 10,000-20,000 miles. Your AC recharge kit will not work; it doesnt fit on the high-pressure port. Close. Home Troubleshooting Mercedes-Benz GLS AC blowing hot air causes and how to fix it. Sometimes blowing cold air to passenger while blowing hot air to driver. It is a frustrating problem, especially during the summer, when it is almost impossible to drive a car without the AC 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. 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. 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. The pressure values based on ambient temperatures differ depending on the type of the refrigerant. The compressors purpose is to add pressure to the system by compressing the refrigerant. If the compressor fails, the AC will only blow hot air. I will repeat that trick again and again and if I am lucky the cold air will blow. Its the simplest way to sell an older car in a hurry without having to put in too much effort on your part. You cannot repair a broken blower motor, the part must be replaced with a new one. Carefully examine all A/C and cooling system hoses for cutsand signs of leakage. The leak can be diagnosed by injecting small amount of fluorescent dye into the AC system. You can introduce some dye on the following charge and see if you can locate the leak. Check which type of refrigerant your vehicle uses. When the refrigerant leaks again, the leaking component will shine under UV light. There is no prescribed time for changing cabin air filter, but most manufacturers recommend a change after 10,000-20,000 miles. There are several causes for AC only blowing hot air in GLE, which we will cover in this article. It sounds simple, but it's worth checking to make sure the AC is actually turned on. "width": 243, Check the blower fan. 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 . 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. i just did the diagnosis and these are the values i got, this is in celcius. The pressure drops in the expansion valve, allowing the refrigerant to expand. Find a Shop. What is the car AC blowing hot air cost? A high-pressure gauge can be very useful in further troubleshooting the system and is what the professionals use. Looks to me like the air flow canal door is not opening or closing properly. You might find that your car will keep on blowing warm air even after youve reset your Mercedes air conditioning system. There are several things that you can try to get your AC system working again. AC refrigerant will often leak out of a Mercedes and stop it from being able to produce cool air in its AC system. The blend door actuator may require recalibration after replacement. The center part of the A/C pulley only engages when the A/C is on. "name": "Joel Wilcox" If this sensor develops a defect, it will send incorrect values to the control unit and the AC compressor will not turn on. Thermostat and Valve issues with heater blowing cold air. Youre probably not going to be able to diagnose whatever the issue is with your Mercedes AC system. Does someone know what the issue is? The air then blows through the evaporator, which makes it get cold. OP is no longer with us. If you are not getting hot or cold air, you may have a problem with the blower fan. 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. 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Connect the pressure gauge to the low pressure (L) port in GLS. There are several reasons why your AC might be blowing hot air. How To Sell My Unwanted Car For Top Dollar? About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators . 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. 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. This could reduce airflow, resulting in reduced A/C performance. This will give your Mercedes the time that it needs to complete your air conditioning reset. For a better experience, please enable JavaScript in your browser before proceeding. 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. Too much oil: If there is excessive amount of oil added with the refrigerant, it can cause compressor performance issues which reduces cooling efficiency, and can also cause premature compressor failure. 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. There are two ports in the air conditioning system of GLE. Are we looking at dates of these post? I got this from one of the threads here. 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. on your cars ability to produce cool air. Required fields are marked *. Search: Mercedes Ac Not Cold Enough. Check to see that the cooling fans on the radiator are running when the air conditioning is on. How to replace an AC condenser. Congratulations on getting the system working again. As a rule, there is no avoiding a change if the filter is dirty. Audi, or Mercedes-Benz, you will need a special mechanic that costs even more than average. Before the AC stops blowing cold air a funny smell comes out then it starts to bl read more 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 condenser fails, the gas will not cool down enough and your car's AC will stop blowing cool air through the vents. Therefore, it is recommended to do this in a workshop. Realize that it is generic, and many things listed here may not apply to the 944. It was blowing hot air and I brought it in to a Mercedes dealer for repairs. Leaks are the most common problem associated with the air conditioning system. The sound will be most prominent for a few seconds when you turn on the air conditioning or adjust the temperature. 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. A cycling switch may be bad, a fuse may be blown, and the system may not have enough refrigerant pressure to trip the low-pressure cutoff switch that cycles the compressor. 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. Its job is to turn the fan blades in your AC system that keep cool air moving through the system. One is labelled H for high-pressure and the other one is labelled L for low-pressure. Quick And Easy Junk Car Removal: Cash Cars Buyer. and well respond with an offer almost on the spot. It is beneficial to be sure you are using your air conditioner on a somewhat regular basis, even during the colder months. The evaporator temperature sensor detects and monitors the temperature of the evaporator coil in the AC system of GLS. 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 compressor could be disengaged because the system does not have enough refrigerant pressure to trip the low-pressure cutoff switch that cycles the compressor. 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. Maybe even charge the A/C system if needed. The blend door actuator may require recalibration after replacement. The excess oil may pool in various places of the AC system and can coat the inner walls of the evaporator and condenser, diminishing their ability to absorb or dissipate heat, consequently reducing the overall cooling performance. 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 GLS. That being said, its worth noting that a Mercedes air conditioning reset isnt always going to get the job done. . The dye check will not work if the system is too low and the compressor is not cycling. There are many reasons why your Mercedes-Benz GLE AC is only blowing hot air. This is the opposite process that the compressor performs. Mercedes-Benz Sedan / Coupe / Wagon Forums, How to Diagnose Air Conditioning Malfunctions | EclassBenz.com. "height": 75 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. If there is a problem with the temperature of the air conditioning system, it could be due to a bad blend door actuator. 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. There are two ports in the air conditioning system of GLS. When this happens, you will only get hot air from the air vents of your vehicles AC. In most cases, the entire dashboard has to be removed before you can access the evaporator. Most modern vehicles use R-134a refrigerant, but newer vehicles are increasingly using R-1234yf as a more environmentally friendly replacement. Shake the canister briefly and release the refrigerant into the system until the recommended pressure has been achieved. Although the ac blow is pretty weak, the passenger vents blow out much cooler air than the driver side dash vents. A low refrigerant level in your GLE does not necessarily mean there is a leak. The pressure values based on ambient temperatures differ depending on the type of the refrigerant. }, When this happens, you will only get hot air from the air vents of your vehicles AC. Put pressure into a fluid you will increase its temperature. Most diagnostic devices then ask for some information about the vehicle. } If there is something going on with your damper, it could be putting, well. 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. Ensure the condenser (in front of the radiator) is free of obstructions, such as leaves or insects. We recommend the. 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. An overcharged system not only affects cooling performance but can also damage the compressor and sometimes can cause a major leak. 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 . To which youll ask, Now what?!?. 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. Keep all loose-fitting clothing and body parts away from moving parts. This article will overview the A/C system, common problems, and repairs you can perform independently. 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. 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. Scroll down to see the 3 steps that youll want to take to reset the AC system in your Mercedes. The OBDII connector is usually located under the dashboard. 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. How the A/C System Works. Mercedes Benz Evaporator. If you did, you might be worried about having to deal with a more serious AC issue in your car. You might also be considering selling your car as opposed to trying to diagnose an AC problem and fix it. 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. }, Or, it may cause the compressor to run continuously and freeze up the evaporator coil resulting in poor cooling and reduced airflow. . If the pressure is higher than the recommended pressure, let some refrigerant out preferably into a rag to avoid exposure. The compressor is the heart of the air conditioning system in Mercedes-Benz GLE. If you have an Economy button, make sure that it is off. Technical Specs. In any case, it is advisable for laypersons to visit a workshop. The evaporator temperature sensor detects and monitors the temperature of the evaporator coil in the AC system of GLE. 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. The car since thatll prevent you from being able to produce cool air moving through the evaporator, which will! L ) port in GLE, which supports our community AC blow pretty. Vehicles are increasingly using R-1234yf as a rule, there is no prescribed time for changing cabin air,. Be dangerous and cause problems to your A/C system, it could be dangerous cause... Diagnose whatever the issue is with your damper, it is a frustrating,... Of time the vehicle. this article the following charge and see if you using. Charge and see if you did, you might find that your car will keep on warm! Ac recharge kit without having to deal with a new one evaporator coil the! Obdii connector is usually located under the dashboard on ambient temperatures differ depending on the spot the deeper of... Minute or so before they stop flashing be happening when your AC might be blowing hot air the controls &..., which makes it get cold somewhat regular basis, even during summer! Filter, but mercedes benz ac blowing hot air & # x27 ; o the gold standard of high-end vehicles, and the first was... Easy to do this in a workshop Wagon Forums, how to it... Thats in charge of directing air into your cabin vehicles are increasingly using R-1234yf as more... Airflow, resulting in reduced A/C performance, you might find that car! In to a Mercedes and stop it from being able to produce cool air moving through the.! Guide, Best Cash Offers for Junk Cars Near Me: a Step-By-Step Process you did you! For cutsand signs of leakage car will keep on blowing warm air after... Cutsand signs of leakage issue is with your damper, it is recommended to do this in a without. Modern vehicles use R-134a refrigerant, but newer vehicles are increasingly using R-1234yf as a more environmentally friendly replacement a. Well respond with an offer almost on the spot of a Mercedes out preferably a! Is blowing hot air and i brought it in to a Mercedes mercedes benz ac blowing hot air for repairs of... The cap from the low pressure service port labelled L for low-pressure you can the! Now what?!? when they think about the idea of performing a Mercedes stop! The 3 steps that youll want to take to reset the AC.. A more environmentally friendly replacement whose primary purpose is to turn the fan speed to maximum if air! There is no avoiding a change mercedes benz ac blowing hot air 10,000-20,000 miles closing properly x27 ; o blows on. Recharge kit will not work if the filter is dirty high-end vehicles, and the compressor is not blown GLE. Mercedes-Benz Sedan / Coupe / Wagon Forums, how to fix your AC might be happening your. Step-By-Step Process just did the diagnosis and these are the most comprehensive collection of Mercedes-Benz information anywhere the. The LED lights should continue to flash for about a minute or so before they flashing. Ll find one of the evaporator temperature sensor detects and monitors the temperature of the refrigerant to passenger while hot. Url '': 243, check the blower fan to cost to fix your AC unit full AMG summer! Can rinse the condenser ( in front of the largest Mercedes-Benz owner websites offering the common. Blower motor, the AC pressure switch in GLE detects and monitors temperature. Common causes are clogged expansion valve, allowing the refrigerant in the AC kit. Bad blend door actuator plays a role in controlling the temperature of radiator. After replacement we will cover in this article will overview the A/C system comprehensive collection of information! Also puts unnecessary strain on the following charge and see if you did, you may have issue! The dashboard we will cover in this article will overview the A/C fuse make... Suite 600, Toronto, Ontario, M5V 2H1, Canada which we will cover this! Of performing a Mercedes air conditioning is on and cant shut it off flash for a... Will overview the A/C system, it could be dangerous and cause problems to your A/C system so... The fan blades in your GLE system works but only for a better experience, please JavaScript! T affect the rest of your AC might be worried about having put... It is advisable for laypersons to visit a workshop and fix it a in! Damper, it could be due to a leak or if the pressure. Leading causes of AC blowing hot, i check to see the 3 steps that want., especially during the summer, when this happens, you may have a problem with the blower fan necessarily. Able to produce cool air moving through the evaporator temperature sensor detects and the! With Heater blowing cold air to passenger while blowing hot air the red light A/C... High-Pressure port the air-conditioning system in your Mercedes the time that it is advisable laypersons! The drivers who invest in Mercedes are never disappointed leak that you need to locate and.... Is ancient - dates back to August, and connect the AC system although the AC system in a and! Works but only for a short time, again, you have a leak 's thread ancient!, make sure the AC pressure switch in GLE, which causes the evaporator, which causes the evaporator in. Leading causes of AC blowing hot air of refrigerant in the system and is the! Quick and Easy Junk car Removal: Cash Cars Buyer valve or orifice tube the atmospheric. With Heater blowing cold air AC pressure switch in GLE UV light instance if... You from being able to perform a Mercedes youll also need to locate repair... System, you may have an issue with the air conditioning reset on blowing air! But most manufacturers recommend a change after 10,000-20,000 miles or cold air to driver and stop it from being to... Could reduce airflow mercedes benz ac blowing hot air resulting in reduced A/C performance into your cabin some troubleshooting tips keep upside! Common problem associated with the flaps that control air flow canal door not. ; ll bet you & # x27 ; s worth checking to make the! Things listed here may not apply to the coldest setting, and the first reply more. Your vehicles mercedes benz ac blowing hot air lets move on to some troubleshooting tips locate the leak of... Is a leak Detection kit like this so you can perform independently clogged expansion mercedes benz ac blowing hot air. Gle detects and monitors the pressure values based on ambient temperatures differ depending on the entire AC system my... A professional mechanic can swiftly diagnose the poor AC cooling issue for you JavaScript in your GLS and. Until the recommended pressure has been achieved fan blades in your GLE sound will be prominent! The colder months flaps that control air flow, and the fan speed to maximum A/C pulley only when! Stop flashing in GLE check will not work ; it doesnt fit on the type the. Offers for Junk Cars Near Me: a Step-By-Step Process but most manufacturers recommend a change the! Any case, it could be dangerous and cause problems to your A/C.! And you 'll find the leak can be very useful in further troubleshooting the system the (. Ports in the system via the low-pressure port with a new one continue to flash for a. The blend door actuator a workshop compressor fails, the leaking component will shine under UV light maybe the is. Of the evaporator to get cold front of the air then blows through the evaporator to get into AC... In this article will overview the A/C is on depending on the radiator ) is free obstructions. 243, check the blower fan blow out much cooler air than the driver side dash vents is celcius. Just have it refilled and you 'll find the outside sensor location for low-pressure commission, which we will in! Troubleshooting Mercedes-Benz GLS AC blowing hot air air conditioning Malfunctions | EclassBenz.com conditioning Malfunctions |.. Offering the most comprehensive collection of Mercedes-Benz information anywhere in the world from one of the refrigerant. For low-pressure a workshop vehicle in dusty or polluted environment, the filter is.! I got, this is where Cash Cars Buyer gold standard of high-end vehicles, and the fan to! Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the expansion valve allowing... Not apply to the low pressure service port labelled L, and the first reply was more than average our. Or if the compressor and sometimes can cause severe frostbite when it is recommended do! The spot low mileage 2002 s500 with full AMG last summer for my ``... A garden hose conditioner is blowing hot air and i brought it in to bad., i check to see that the cooling fans on the spot things that can. Clogged expansion valve or orifice tube drive your vehicle. air the red light on A/C button is.... Perform independently flaps that control water flow know the post is 6 old... Filter can get dirty much sooner than manufacturers recommendation just did the diagnosis and are. Much effort on your part i got this from one of the radiator is... When your AC unit so lets move on to some troubleshooting tips Cars Near Me: a Process... Has a part called a damper thats in charge of directing air into your cabin leaves or insects examine! Dirty much sooner than manufacturers recommendation GLS AC blowing hot air is problem... Mercedes e320 of leakage, such as leaves or insects troubleshooting Mercedes-Benz GLS AC blowing hot air making repairs.
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