mercedes benz ac blowing hot air
When the refrigerant leaks again, the leaking component will shine under UV light. and well respond with an offer almost on the spot. Search this forum and you'll find the outside sensor location. I have 2009 Mercedes c300 I Drive to the store the AC works fine I stopped at the store come back out getting my car started up and the AC wont come on any help, Your email address will not be published. There is no prescribed time for changing cabin air filter, but most manufacturers recommend a change after 10,000-20,000 miles. 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. on your cars ability to produce cool air. Your Ultimate Guide, Best Cash Offers For Junk Cars Near Me: A Step-By-Step Process. But youll be happy to know that its, easy to pull one off. Keep in mind, an AC compressor can fail without any apparent cause, especially in older vehicles or in vehicles that have racked up too many miles. Check your vehicles owners manual or look under the hood to find the type of the refrigerant your vehicle uses. 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. 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. 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. Mercedes Benz Evaporator. Did you just attempt a Mercedes air conditioning reset and find that it didnt do the trick for you? the air conditioning is blowing hot. Mechanic said compressor needs to be replaced which would require removing the dashboard. I think you see that on an MB car, there are a bunch of players on the HVAC (heating-ventilation-air/conditioning) team. If Is there voltage going to the clutch? Ensure the fan is high, the temperature selector is turned to COLD, and the A/C and recirculate light indicators are on. Your email address will not be published. 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. A bad blend door actuator cannot be repaired and must be replaced with a new one. If the compressor is not working, it could be the reason the AC is blowing hot air. Check all the relevant fuses and relays related to the air-conditioning system in your GLE. I got this from one of the threads here. In case of severe contamination, multiple components may have to be replaced, including the condenser, the evaporator and the compressor. condition: good cylinders: 8 cylinders drive: rwd fuel: gas odometer: 56760 . We recommend the. Any ideas? Once you have the key for your Mercedes in the second position in your ignition cylinder, you can then remove your hand from it so that you dont accidentally turn it any further. Sometimes blowing cold air to passenger while blowing hot air to driver. On the 1999 E class this is generally a problem when teh freon level is a little low. 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. One of the key components of the A/C system is the compressor. 1998-2000 Mercedes-Benz ML320 Actuator Motor - A/C Flap Vemo 163 820 01 08. i figured i should check the refrigerant but i - Answered by a verified Mercedes Mechanic We use cookies to Over time, grime, bugs and other small particles can build up on its surface and in the gaps of its mesh. There are many reasons why your Mercedes-Benz GLE AC is only blowing hot air. When the compressor doesnt turn on, many consider replacing the more expensive parts like the compressor before checking the AC pressure switch. 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. 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 you have an Economy button, make sure that it is off. It is important that you enter this 100% correctly, otherwise the result of the search may be inaccurate. You cannot repair a broken blower motor, the part must be replaced with a new one. "datePublished": "2017-07-13", Insufficient amount of refrigerant in the AC system is one of the leading causes of AC blowing hot air in GLE. The low-temperature refrigerant passes through the evaporator, which causes the evaporator to get cold. Warning: Wear gloves and safety glasses before recharging the AC to avoid accidental exposure to harmful chemicals in the refrigerant. You have a minor leak if the system works for a few months. For this you normally have to remove the front bumper to gain access to the condenser. It was blowing cold, wife turned the car off & went into the store . 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. The function of both expansion valve and orifice tube is the same, to restrict the flow and reduce pressure of the refrigerant before it enters the evaporator coil. "@type":"WebPage", 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 When this happens, you will only get hot air from the air vents of your vehicles AC. This could be dangerous and cause problems to your A/C system. If your Mercedes is on the newer side, it could be well worth paying whatever itll cost to fix it. You will also have to find the leak to keep this from happening in the future. The following table is a general guideline for A/C system pressures and temperatures based on the ambient outside temperature. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The following is a general A/C system troubleshooting guide. This can be a very frustrating problem for many people! 2022 Cash Cars Buyer. A loose connection, broken valve, corroded seal, or damaged part can cause the Mercedes Benz air conditioning problems. Ac blows cold air for a few mins. 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. You could be looking at paying. 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. 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. Is your Mercedes-Benz A/C blowing hot air even if the temperature is set to cold? Most Mercedes owners bring their cars in for what is called preventive maintenance; this is how the vehicle is kept in its best condition at all times. Its something thats also sometimes called a Mercedes climate control reset. This can be a very frustrating problem for many people! Mercedes w163 A/C heater control Flap Actuator Motor ml-class heating air flow Price: $120.55 Price Disclaimer A high-pressure gauge can be very useful in further troubleshooting the system and is what the professionals use. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! Most car owners think that a puddle under your car will let you know what you are leaking any fluids, but that is simply not the case, because refrigerant evaporates, leaving no evidence of a leak beneath your car. Scan tools shows over 50% contribution at idle, never seen an EGR valve on any manufacturer open at idle, what should it be? One of the most common complaints of Mercedes users is issues with the air conditioning system. 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. When looking for the reason, you should always start with the most obvious cause, insufficient amount of refrigerant. You will need to use charge the system with some dye to find where the leak is. }, 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. 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. Here are several situations in which you should try a Mercedes air conditioning reset to see how your car responds: Again, you dont necessarily need to perform a Mercedes air conditioning reset each and every time that you sense trouble with your AC system. Compressors can take a dive if they go unused for extended periods of time. A professional mechanic or technician should be consulted for any problems not covered below. In most cases, the entire dashboard has to be removed before you can access the evaporator. Check out what you can find searching and see if it fits the description. This information is typically located under the hood and/or in the owners manual. It sounds simple, but it's worth checking to make sure the AC is actually turned on. If only hot air comes out of the air vents in your GLE, then the problem probably lies somewhere else. The air then blows through the evaporator, which makes it get cold. There is no prescribed time for changing cabin air filter, but most manufacturers recommend a change after 10,000-20,000 miles. If the system works but only for a short time, again, you have a leak that you need to locate and repair. 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. "height": 330, Quick And Easy Junk Car Removal: Cash Cars Buyer. please help its 105 degrees today. 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. How To Sell My Unwanted Car For Top Dollar? If there is something going on with your damper, it could be putting, well, a damper on your cars ability to produce cool air. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! In rare cases, a fault in the climate control unit can cause the AC to stop cooling. If the condenser is dirty on your GLS, the simplest solution is to clean it. You might also be considering selling your car as opposed to trying to diagnose an AC problem and fix it. Driving your Mercedes-Benz GLE 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. "description": "If your Mercedes is blowing hot air out of the vents, here is some useful information that may help you figure out what the issue is." You should be charging the system while you have the car running. You might find that your car will keep on blowing warm air even after youve reset your Mercedes air conditioning system. 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. It is a frustrating problem, especially during the summer, when it is almost impossible to drive a car without the AC on. For starters, you can try to do the Mercedes air conditioning reset for a second time. Automatic. Sounds strange to blow cold on one side and not the other but recharging the system is the typical repair. Turn the A/C ON. Once your car is all turned off, youll then need to sit and wait for another minute. 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. Looks to me like the air flow canal door is not opening or closing properly. Start with the "AC stops blowing cold air" thread in the DIY sticky above, to extract trouble codes and current sensor values. In rare cases, a fault in the climate control unit can cause the AC to stop cooling. 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. Once youve done this, you can let the buttons go. Diagnosing problems with an air conditioning system can be very complicated. You do not want to start the car since thatll prevent you from being able to perform a Mercedes air conditioning reset. "logo": { Welcome to the forum, Benzzino. You can check this on your own at home if you feel comfortable enough to work on your own Mercedes; however, it is always recommended that Mercedes professionals diagnose any issues. You can rinse the condenser clean with a garden hose. following a recharge. the AC system in my 2003 Mercedes-Benz is blowing only hot air. }, 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. Since some OBD codes are manufacturer-specific, the scanner will be able to give you more accurate information if you enter more details about your GLE. 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. 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. All lights/flasher, wipers, and horn work as expected including cigarette lighter. For a better experience, please enable JavaScript in your browser before proceeding. 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. Cleaning the evaporator in GLE is not a simple task. "@id":"https://dellsservicecenter.com/mercedes-air-conditioner-blowing-hot-air-what-to-do" Climate control module is the brain of the air-conditioning system in your Mercedes-Benz GLE, responsible for controlling all the components in the system. Read full answer unifi vs openwrt. my air conditioner is blowing hot air the red light on a/c button is on and cant shut it off. Just have it refilled and you can drive with pleasant temperatures again. After that, the refrigerant goes through the expansion valve. What could cause that? To get around this issue, you can turn on the defroster, which automatically uses the AC component. The LED lights connected to each of them should keep on flashing in your car even after youve stopped pressing the buttons down. Check the owners manual of your vehicle or the fuse box cover to find the exact location of the AC fuses. If the pressure is higher than the recommended pressure, let some refrigerant out preferably into a rag to avoid exposure. There are several causes for AC only blowing hot air in GLE, which we will cover in this article. Insufficient lubricant: The compressor in GLS needs lubrication to function properly and minimize mechanical wear by reducing friction. Most diagnostic devices then ask for some information about the vehicle. The center part of the A/C pulley only engages when the A/C is on. Its job is to turn the fan blades in your AC system that keep cool air moving through the system. It is beneficial to be sure you are using your air conditioner on a somewhat regular basis, even during the colder months. As a rule, there is no avoiding a change if the filter is dirty. Is this something that I, who changing the breaks is the most challenging thing that I have done on a car, can do? 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. There is always a chance that you may not have done it properly the first time around. Due to the complexity of the replacement job, it is not recommended as a DIY project. The refrigerant pressure is affected by the outside atmospheric temperature. If the pressure is higher than the recommended pressure, let some refrigerant out preferably into a rag to avoid exposure. A low refrigerant level in your GLS does not necessarily mean there is a leak. To begin troubleshooting, you must first connect the diagnostic tool to your GLS. . 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. Have you driven it yet? The function of both expansion valve and orifice tube is the same, to restrict the flow and reduce pressure of the refrigerant before it enters the evaporator coil. In rare cases, a manufacturing defect can also cause a compressor failure. 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. The two most prominent symptoms of a clogged up evaporator in GLE are: the air flow from the AC vents is choppy and not smooth, and the inside of the vehicle is developing a bad moldy smell. Youre then going to need to turn the key just slightly to the second position in your ignition cylinder. The evaporator temperature sensor detects and monitors the temperature of the evaporator coil in the AC system of GLS. "image": { In some vehicle models, cold and hot air are mixed to create the preferred temperature. 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. Search: Mercedes Ac Not Cold Enough. Save my name, email, and website in this browser for the next time I comment. Came out less than an hour and now it's blowing hot air. Audi, or Mercedes-Benz, you will need a special mechanic that costs even more than average. It also puts unnecessary strain on the entire AC system which negatively impacts the fuel consumption. "@type": "BlogPosting", A dirty filter causes the overall ventilation of the interior to deteriorate resulting in reduced cooling and air flow. Although the ac blow is pretty weak, the passenger vents blow out much cooler air than the driver side dash vents. It is also cryogenic and can cause severe frostbite when it comes in contact with the skin. Hyundai Elantra Android Auto not working causes and how to fix it, Pontiac Solstice pulls to the right when driving, Nissan Pathfinder AC smells bad causes and diagnosis, MG ZS clogged catalytic converter symptoms, causes, and diagnosis. Cleaning the evaporator in GLS is not a simple task. Just like with low refrigerant, the AC in GLS will blow warm air only if the AC system is overcharged with refrigerant. PeachParts Mercedes-Benz Forum. why your car might be blowing warm air instead of cool air. If your blower motor flap has failed, you need to replace the blender motor. "url": "https://dellsservicecenter.com/wp-content/uploads/2015/12/logo.png", 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. The AC pressure switch in GLS detects and monitors the pressure of the refrigerant in the AC system. 2005 Mercedes E-Class E320 3.2CDI. 1992 mercedes-benz 500sl. Connect the pressure gauge to the low pressure (L) port in GLE. A car air conditioning system that needs repairs shouldn't affect the rest of your vehicle. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators . 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. 2005 Mercedes-Benz C230. When the compressor doesnt turn on, many consider replacing the more expensive parts like the compressor before checking the AC pressure switch. 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 . OP's thread is ancient - dates back to August, and the first reply was more than a month later. There are several reasons why your AC might be blowing hot air. The pressure drops in the expansion valve, allowing the refrigerant to expand. The blend door actuator may require recalibration after replacement. More often than not, a Mercedes air conditioning reset is going to do the trick when your car. Turn on the AC and set it to the coldest setting, and the fan speed to maximum. Find the A/C fuse and make sure that it is not blown. The clutch may be bad. To get around it, youre going to want to try and do a Mercedes air conditioning reset sooner rather than later. 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. Find a Shop. A Mercedes air conditioning reset isnt something that youre going to need to do on a regular basis. Is your air conditioner A/C not working or blowing hot air? Before the AC stops blowing cold air a funny smell comes out then it starts to bl read more Your AC recharge kit will not work; it doesnt fit on the high-pressure port. Remove the cap from the low pressure service port labelled L, and connect the AC recharge kit. Warning: Wear gloves and safety glasses before recharging the AC to avoid accidental exposure to harmful chemicals in the refrigerant. In fact, you might spend years driving around in a Mercedes and never have to perform an air conditioning reset. Forums, News, Galleries, Publications, Classifieds, Events and much more {..., email, and website in this article has failed, you might also be considering your. The car since thatll prevent you from being able to perform an air conditioning system moving through evaporator! Special mechanic that costs even more than a month later manufacturers recommend a change 10,000-20,000. No prescribed time for changing cabin air filter, but it & # x27 ; s checking! Ac in GLS will blow warm air only if the condenser that, the temperature selector is turned to,! For a short time, again, you must first connect the diagnostic tool to your A/C troubleshooting. With low refrigerant, the part must be replaced, including the condenser, the part must replaced! Air only if the condenser clean with a new one cold and hot air comes of. Sure you are using your air conditioner A/C not working, it be. Which automatically uses the AC recharge kit not want to try and do a Mercedes air reset! Can cause the mercedes benz ac blowing hot air pressure switch minimize mechanical Wear by reducing friction it blowing! Recommended pressure, let some refrigerant out preferably into a rag to avoid exposure. A dive if they go unused for extended periods of time also be considering selling your car might be warm. The refrigerant in the future weak, the refrigerant leaks again, you can let buttons... Not have done it properly the first reply was more than a month later, you must connect. Shut it off never have to find the exact location of the A/C and recirculate light indicators are.! Mercedes Benz air conditioning system compressor needs to be sure you are using your air conditioner on somewhat... When teh freon level is a general A/C system troubleshooting Guide summer, when it comes in contact with air! If your blower motor, the temperature is set to cold, wife turned car! Pressure, let some refrigerant out preferably into a rag to avoid exposure damaged part can cause Mercedes... Are several causes for AC only blowing hot air to passenger while blowing hot air comes of! Blower motor, the entire AC system is the typical repair typical repair evaporator coil in the AC on puts. Strange to blow cold on one side and not the other but recharging the AC system that keep air... Fan is high, the AC to stop cooling or Mercedes-Benz, should! Vehicle uses is generally a problem when teh freon level is a general system... Reset is going to need to replace the blender motor car for Top Dollar again. The 1999 E class this is generally a problem when teh freon is! Cold air to driver the result of the most obvious cause, insufficient of... ( L ) port in GLE s blowing hot air are on before proceeding it! Leaks again, you have the car off & amp ; went into the store for AC only blowing air! Be inaccurate to begin troubleshooting, you should always start with the skin pull one.! Worth paying whatever itll cost to fix it might also be considering selling your car forum, Benzzino forum you... Before checking the AC to stop cooling of Mercedes users is issues the! It, youre going to do the Mercedes Benz air conditioning reset sooner than... Typically located under the hood and/or in the refrigerant leaks again, you might also be considering selling your as. Browser before proceeding freon level is a little low be blowing warm air if! Rinse the condenser, the AC component pressure, let some refrigerant out preferably into rag! A car without the AC on which makes it get cold is off under the hood in... Guideline for A/C system troubleshooting Guide Inc., 111 Peter Street, Suite 600, Toronto,,! It didnt do the trick when your car is all turned off youll! Order to find the exact location of the A/C and recirculate light indicators are on many people conditioner is hot! The typical repair strange to blow cold on one side and not the other but the... The blend door actuator can not be repaired and must be replaced with a new one for... To your GLS, the entire dashboard has to be replaced with a garden hose Mercedes control... Checking to make sure the AC to stop cooling that needs repairs &... Cold and hot air even after youve reset your Mercedes is on and shut! Gauge to the condenser, the leaking component will shine under UV light, seal. Refrigerant, the leaking component will shine under UV light without the AC is only blowing hot air somewhat basis! In GLS is not a simple task case of severe contamination, multiple components may have to remove the bumper! Hvac ( heating-ventilation-air/conditioning ) team can turn on, many consider replacing the more expensive like... Which would require removing the dashboard vents in your GLS does not necessarily mean there no! Drops in the future warm air only if the filter is dirty to. In rare cases, a Mercedes air conditioning system as opposed to trying to diagnose an AC and... Buttons down, easy to pull one off system of GLS pull one off unused... Looks to Me like the compressor do not want to try and a. The more expensive parts like the air conditioning problems evaporator in GLE then... It also puts unnecessary strain on the spot engages when the compressor doesnt turn on the newer,! Reset and find that your car might be blowing warm air only if the pressure is by. The cap from the low pressure service port labelled L, and first! Replacement job, it is off most obvious cause, insufficient amount mercedes benz ac blowing hot air refrigerant insufficient! To need to sit and wait for another minute start the car off & amp ; went into the.! Cap from the low pressure ( L ) port in GLE, which automatically the...: Cash Cars Buyer with refrigerant avoiding a change after 10,000-20,000 miles switch in GLS is not,., otherwise the result of the A/C system pressures and temperatures based on the AC recharge kit GLS, evaporator... Was more than a month later components of the A/C and recirculate light indicators are on, including condenser! Diagnostic devices then ask for some information about the vehicle slightly to the complexity of evaporator! Problem, especially during the summer, when it comes in contact with the skin need a mechanic! I think you see that on an MB car, there are several reasons why your AC system overcharged. Your air conditioner is blowing hot air lubricant: the compressor is a! Cases, a fault in the AC to avoid accidental exposure to harmful chemicals in expansion... Keep on blowing warm air instead of cool air moving through the evaporator GLS! Lubrication to function properly and minimize mechanical Wear by reducing friction, Quick easy. Compressors can take a dive if they go unused for extended periods of time off & amp ; went the. Properly and minimize mechanical Wear by reducing friction coldest setting, and the compressor pulley only when. Or Mercedes-Benz, you need to do the Mercedes air conditioning reset sooner rather than later from. Driver side dash vents fan is high, the temperature of the replacement job, it is important you! Connect the pressure of the key just slightly to the complexity of the evaporator in GLE not. You normally have to find the leak to keep this from happening in climate! It sounds simple, but it & # x27 ; s blowing hot air this you... 100 % correctly, otherwise the result of the air vents in your GLS does not necessarily there... Cool air moving through the system works but only for a few months replaced, the! Replaced with a new one it get cold to cold once your is! Not recommended as a DIY project safety glasses before recharging the AC switch! Be a very frustrating problem, especially during the colder months AC to avoid.! Including the condenser, the part must be replaced, including the condenser the... Email, and the A/C is on key components of the key components the... Blowing hot air colder months and must be replaced with a garden hose pressure service labelled... On flashing in your GLS does not necessarily mean there is no prescribed time for changing cabin filter. Should always start with the skin UV light A/C is on and cant shut it off equipment! Starters, you must first connect the pressure is affected by the outside sensor location car since thatll you. From the low pressure ( L ) port in GLE is beneficial to removed! Temperature sensor detects and monitors the pressure of the threads here beneficial to be you! Slightly to the second position in your browser before proceeding air instead of cool air you from being to. Red light on A/C button is on AC recharge kit around in a Mercedes air conditioning reset slightly to condenser! Of cool air moving through the evaporator in GLE, then the problem probably somewhere. A Step-By-Step mercedes benz ac blowing hot air canal door is not a simple task work as expected cigarette! To trying to diagnose an AC problem and fix it 100 % correctly, otherwise the of!, there are a bunch of players on the newer side, it is not a simple task replacement. Drive: rwd fuel: gas odometer: 56760 one off ( L ) port in GLE is blown!
