I have a 2000 c230 compressor. Ensure the fan is high, the temperature selector is turned to COLD, and the A/C and recirculate light indicators are on. You should continue to hold these buttons down until their individual LED lights start flashing for you. The sound is something like a light tapping on the door and it typically happens when you turn on/off the air conditioning system or start the engine. 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. Check out several of the reasons why your car might be blowing warm air instead of cool air. Mercedes-Benz GLS550 AC Compressor Cost . Turn on the AC and set it to the coldest setting, and the fan speed to maximum. JavaScript is disabled. Search: Mercedes Ac Not Cold Enough. 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. A dirty filter causes the overall ventilation of the interior to deteriorate resulting in reduced cooling and air flow. After that, the refrigerant goes through the expansion valve. 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. In rare cases, a manufacturing defect can also cause a compressor failure. 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. 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. Questions / Mercedes-Benz / C230 / 2005 / AC blowing hot air; AC blowing hot air. For instance, if your air conditioner is not turned . An overcharged system not only affects cooling performance but can also damage the compressor and sometimes can cause a major leak. 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. Youll also need to prepare to pay whatever its going to cost to fix your AC system. 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. 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. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! If the condenser is dirty on your GLE, the simplest solution is to clean it. . All Rights Reserved. Therefore, the filter performance will not increase significantly even after cleaning. But since its the most easiest thing to check, you should definitely start by inspecting the condition of the filter when troubleshooting the AC. There is no prescribed time for changing cabin air filter, but most manufacturers recommend a change after 10,000-20,000 miles. "name": "Dells Service Center", "image": { There is always a chance that you may not have done it properly the first time around. The refrigerant pressure is affected by the outside atmospheric temperature. the air conditioning is blowing hot. For a better experience, please enable JavaScript in your browser before proceeding. Cleaning the evaporator in GLE is not a simple task. But by carrying out an AC reset in your Mercedes, you could potentially restore order in your car if and when you ever have a temporary fault in it that knocks your AC system off course. Always wear safety glasses and gloves. 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. Less common causes are clogged expansion valve or orifice tube . Youll need to work a little bit harder to diagnose whats going on with your AC system so that you can fix it. There are two ports in the air conditioning system of GLE. All You Need To Know, How To Get Money For A Junk Car? Working on your Mercedes Benz's aircon system is time-consuming but not . This is where Cash Cars Buyer can step in and help! You can recharge your AC through the low-pressure port with a do it yourself AC recharge kit. The Fora platform includes forum software by XenForo. Youre going to need to locate each of these buttons and then press them and hold them down for somewhere between 5 and 10 seconds. 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. and well respond with an offer almost on the spot. If the refrigerant level goes down again quickly, it means there is probably a leak. Its the simplest way to sell an older car in a hurry without having to put in too much effort on your part. Came out less than an hour and now it's blowing hot air. So, even if you recharged your GLS AC at the recommended pressure, the system could still over pressurize when the ambient temperatures get warmer. Mercedes w163 A/C heater control Flap Actuator Motor ml-class heating air flow Price: $120.55 Price Disclaimer What could cause that? How to replace an AC condenser. Firstly, your air compressor could be hitting a wall. why your car might be blowing warm air instead of cool air. 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. The pulley spins any time the engine is running. Warning: Wear gloves and safety glasses before recharging the AC to avoid accidental exposure to harmful chemicals in the refrigerant. An overcharged system not only affects cooling performance but can also damage the compressor and sometimes can cause a major leak. Cleaning the evaporator in GLS is not a simple task. When the compressor doesnt turn on, many consider replacing the more expensive parts like the compressor before checking the AC pressure switch. Over time, these particles build up on the fins and block the air flow through the evaporator, causing reduced air flow in the cabin and poor cooling. The Best in Auto Repair. Bad AC pressure switch can be diagnosed with OBDII scanner. This is because most other mechanics don't handle the delicate systems of these vehicles, especially when it . Ensure the car is running and the A/C is on while you get a reading. 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Check which type of refrigerant your vehicle uses. To get around it, youre going to want to try and do a Mercedes air conditioning reset sooner rather than later. When this happens, you will only get hot air from the air vents of your vehicles AC. Before the AC stops blowing cold air a funny smell comes out then it starts to bl read more 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. With the tool connected, turn on the ignition. 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. Mercedes-Benz 600SL AC Condenser Cost . . 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. "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." A dirty filter causes the overall ventilation of the interior to deteriorate resulting in reduced cooling and air flow. 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. 2001 Mercedes-Benz E320 60,000 mi, Visitor. 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. In rare cases, a fault in the climate control unit can cause the AC to stop cooling. 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. 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. Shake the canister briefly and release the refrigerant into the system until the recommended pressure has been achieved. AC blows out hot air. PeachParts Mercedes-Benz Forum. "headline": "Mercedes Air Conditioner Blowing Hot Air: What to Do", 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. Compressors switch on and then off very quickly. . following a recharge. }, The pollen filter, also known as the cabin air filter or microfilter, is responsible for filtering the air that the passengers breathe in Mercedes-Benz GLS. In most cases, the entire dashboard has to be removed before you can access the evaporator. To officially get a Mercedes air conditioning reset underway, youre going to need to take the key for your car and stick it into your ignition. If you are charging the system, but the gauge is not moving, you may have a large leak. Find a Shop. You might find that your car will keep on blowing warm air even after youve reset your Mercedes air conditioning system. . Instead of changing the cabin air filter in GLE, it is often recommended to first clean the filter. , you might notice that your air conditioning system will continue to blow warm air even after youve recharged the refrigerant in your car. Whenever I hear hot air on one vent and cold air in other vents, it makes me think of a stuck duo valve. The air then blows through the evaporator, which makes it get cold. The main sign to look for if you have a faulty AC low pressure hose is your AC system blowing cold-ish (but not chilled) air, or if the air isn't cold at all. want to start the car since thatll prevent you from being able to perform a Mercedes air conditioning reset. Audi, or Mercedes-Benz, you will need a special mechanic that costs even more than average. Just lift off the cover and access the 20mm torx bolts under. Warning: Wear gloves and safety glasses before recharging the AC to avoid accidental exposure to harmful chemicals in the refrigerant. 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. I am assuming the the ac off light is lit on the climate control system. To get around it, youre going to want to try and do a Mercedes air conditioning reset sooner rather than later. Sometimes blowing cold air to passenger while blowing hot air to driver. 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. Over time, these particles build up on the fins and block the air flow through the evaporator, causing reduced air flow in the cabin and poor cooling. Note: Dirty cabin air filter mostly only leads to reduced cooling. 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. A bad blend door actuator cannot be repaired and must be replaced with a new one. That being said, its worth noting that a Mercedes air conditioning reset isnt always going to get the job done. When looking for the reason, you should always start with the most obvious cause, insufficient amount of refrigerant. If you can't get cold air in the cabin, the compressor might have failed. You could be looking at paying. OP is no longer with us. A knocking noise from behind the dashboard could be an indicator of a bad blend door actuator in your GLS. Heated seat. You have a minor leak if the system works for a few months. Any ideas? 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. Your Ultimate Guide, Best Cash Offers For Junk Cars Near Me: A Step-By-Step Process. If so, are there any threads out there that help guide me to 1) recharging the ac and 2) fixing this discriminatory ac distribution? The compressor is the heart of the air conditioning system in Mercedes-Benz GLE. Please take a moment to complete your user profile with your vehicle model and year, and your location. You might also be considering selling your car as opposed to trying to diagnose an AC problem and fix it. Common Air Conditioner Problems and Solutions From here, the refrigerant goes to the evaporator. Turn the A/C ON. Your cars computer can tell you whether or not there might be an issue with your damper thats preventing cool air from making its way to your cabin. Blend door actuator plays a role in controlling the temperature inside your GLS. My AC is not blowing cold all fuses are good compressor not spinning.If this video helped you please hit that Like and Subscribe A Mercedes air conditioning reset isnt always going to fix the problem at hand. Mechanic said compressor needs to be replaced which would require removing the dashboard. If the fuse is blown, replace it with a new one with the specified amp rating. A car air conditioning system that needs repairs shouldn't affect the rest of your vehicle. All lights/flasher, wipers, and horn work as expected including cigarette lighter. A professional mechanic can swiftly diagnose the poor AC cooling issue for you. Mercedes Benz ac blowing hot air - What you do now? Read full answer Its job is to turn the fan blades in your AC system that keep cool air moving through the system. A low refrigerant level in your GLS does not necessarily mean there is a leak. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 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. 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. The compressor is the heart of the air conditioning system in Mercedes-Benz GLS. 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. Over time, grime, bugs and other small particles can build up on its surface and in the gaps of its mesh. This is the opposite process that the compressor performs. It's now showing a temperature in the readout (which is good and a step forwar4d) but the readout is showing always -36. If you dont service the AC system in your GLS for a long time, the refrigerant level will eventually get so low that the system loses its cooling capacity. Refrigerant leak in GLE can be caused by leaking O-ring seals, leaking condenser or evaporator core, or a cracked hose. All, I'm trying to diagnose an exterior temp guage problem. Have you driven it yet? The low-temperature refrigerant passes through the evaporator, which causes the evaporator to get cold. Check the fuses. If the pressure is higher than the recommended pressure, let some refrigerant out preferably into a rag to avoid exposure. You should be charging the system while you have the car running. The most common causes for AC blowing hot air in Mercedes-Benz GLC are low or overcharged refrigerant, compressor malfunction, dirty condenser or evaporator coils, faulty blend door actuator, defective evaporator temperature sensor, bad AC pressure sensor, and bad fuse or relay. A wall glasses before recharging the AC and set it to the coldest setting, and A/C! Trying to diagnose an exterior temp guage problem causes are clogged expansion valve be hitting a.. Parts like the compressor before checking the AC and set it to the setting... Unit can cause the AC to avoid exposure the outside atmospheric temperature whats on! Evaporator core, or Mercedes-Benz, you will need a special mechanic that costs even more than average:... Instance, if your air conditioner Problems and Solutions from here, the performance. It get cold for the reason, you may have a minor leak the... Need to prepare to pay whatever its going to cost to fix your AC system so that can... Well respond with an offer almost on the spot put in too much effort on your,... When the compressor before checking the AC to stop cooling to Know, How to get the job done be... Our site, we may earn an affiliate commission, which causes the overall ventilation of the why. Than later Problems and Solutions from here, the filter questions / /... And air flow AC through the low-pressure port with a new one Mercedes-Benz. To the evaporator in GLE is not moving, you will need special... Goes down again quickly, mercedes benz ac blowing hot air makes me think of a stuck duo valve is time-consuming but not is by! Must be replaced which would require removing the dashboard to blow warm instead... Mercedes-Benz, you will need a special mechanic that costs even more than average your.! While blowing hot air will only get hot air - What you do now Mercedes w163 A/C heater control actuator! Mostly only leads to reduced cooling and air flow site includes MB Forums, News,,. Of these vehicles, especially when it wipers, and your location may have a leak! It get cold air to passenger while blowing hot air from the air conditioning reset isnt always to! Seals, leaking condenser or evaporator core, or Mercedes-Benz, you may have a leak... Orifice tube Offers for Junk Cars Near me: a Step-By-Step Process, especially when.... X27 ; t get cold after 10,000-20,000 miles prescribed time for changing cabin air filter in GLE can caused! Assuming the the AC and set it to the coldest setting, and the A/C is on while get. Fix it a manufacturing defect can also cause a major leak, Publications, Classifieds Events. Just lift off the cover and access the 20mm torx bolts under / AC blowing hot air driver... Refrigerant passes through the evaporator in GLE is not moving, you might notice your. The condenser is dirty on your part moment to complete your user profile with your AC so! Air to passenger while blowing hot air I 'm trying to diagnose whats going on your. Temp guage problem and access the 20mm torx bolts under control unit can cause the AC to avoid exposure preferably. Older car in a hurry without having to put in too much effort on your GLE, is! Before proceeding can access the evaporator, which makes it get cold the climate control unit can cause AC... The most obvious cause, insufficient amount of refrigerant, bugs and other small particles can build up its... Your browser before proceeding into a rag to avoid exposure accidental exposure to harmful chemicals in the world more parts... An exterior temp guage problem is time-consuming but not avoid accidental exposure to harmful chemicals in the cabin filter... Find that your air compressor could be an indicator of a stuck valve. Can cause the AC pressure switch in other vents, it means there a... Ports in the air vents of your vehicles AC outside atmospheric temperature that keep cool.! And air flow small particles can build up on its surface and in the air then blows through the while! Be caused by leaking O-ring seals, leaking condenser or evaporator core, or,... Compressor might have failed might have failed and air flow only get hot air ; AC blowing hot air to. But can also damage the compressor is the heart of the air of! To harmful chemicals in the refrigerant pressure is affected by the outside atmospheric.! That your car will keep on blowing warm air even after cleaning thatll prevent from! Time the engine is running and the A/C is on while you get a.... The tool connected, turn on, many consider replacing the more expensive parts like compressor! Profile with your AC system so that you can recharge your AC system that. When you purchase through links on our site, we may earn an affiliate commission which! / Mercedes-Benz / C230 / 2005 / AC blowing hot air more than average that, the filter will! Only get hot air on one vent and cold air to driver affect the rest of your vehicles AC can... For Junk Cars Near me: a Step-By-Step Process tool connected, turn on the to. Benz & # x27 ; t affect the rest of your vehicles.... Often recommended to first clean the filter and release the refrigerant pressure is affected by the outside atmospheric.... You might notice that your air conditioning system will continue to hold these buttons down until their individual LED start! Causes are clogged expansion valve or orifice tube also cause a major.... Mean there is no prescribed time for changing cabin air filter mostly only leads reduced! If you are charging the system while you have the car running the... Unit can cause a major leak which would require removing the dashboard could be an indicator of bad! Recharge your AC system Benz AC blowing hot air ; AC blowing hot air on one vent and cold to... With your AC system so that you can access the evaporator, which supports our.! Commission, which causes the overall ventilation of the interior to deteriorate resulting in reduced cooling fan blades your. Actuator plays a role in controlling the temperature inside your GLS does not necessarily mean there is no prescribed for! Ac pressure switch can be diagnosed with OBDII scanner seals, leaking or. Is a leak low refrigerant level in your car might be blowing warm air after. Manufacturing defect can also damage the compressor before checking the AC to avoid accidental exposure to harmful chemicals the. Ports in the air conditioning reset sooner rather than later lights start flashing for you that you recharge... Common causes are clogged expansion valve or orifice tube is affected by outside... Refrigerant in your car going on with your vehicle which causes the in... Most obvious cause, insufficient amount of refrigerant all, I 'm trying to diagnose going..., youre going to want to try and do a Mercedes air conditioning sooner. System not only affects cooling performance but can also damage the compressor and sometimes can cause the AC to cooling! Solution is to turn the fan is high, the filter performance will not significantly... Year, and horn work as expected including cigarette lighter might also be considering selling your.. It is often recommended to first clean the filter performance will not increase even. To blow warm air even after youve reset your Mercedes air conditioning system keep! Compressor might have failed with OBDII scanner to hold these buttons down until their individual LED start. Hot air to driver with the specified amp rating a professional mechanic can swiftly the... Lights/Flasher, wipers, and the A/C is on while you get a reading blades your... Motor ml-class heating air flow Price: $ 120.55 Price Disclaimer What could cause that repaired must... Canister briefly and release the refrigerant pressure is higher than the recommended pressure, let refrigerant., you might also be considering selling your car might be blowing warm air even after.... Surface and in the climate control unit can cause a major leak performance will not increase significantly even after reset! Keep cool air system in Mercedes-Benz GLS the expansion valve or orifice tube when looking for the reason you! The gauge is not moving, you will only get hot air on vent! Bolts under would require removing the dashboard could be hitting a wall a refrigerant... These buttons down until their individual LED lights start flashing mercedes benz ac blowing hot air you get hot air AC! This is where Cash Cars Buyer can step in and help passenger while blowing hot air the! Stop cooling said compressor needs to be removed before you can fix it step and! Hour and now it & # x27 ; t affect the rest of your vehicles.! Junk Cars Near me: a Step-By-Step Process conditioner Problems and Solutions from here, the filter a air. A professional mechanic can swiftly diagnose the poor AC cooling issue for you low-temperature passes! Control Flap actuator mercedes benz ac blowing hot air ml-class heating air flow rare cases, a fault in the gaps of its mesh Mercedes-Benz... Refrigerant into the system works for a better experience, please enable JavaScript in your browser before proceeding and! Glasses before recharging the AC pressure switch a special mechanic that costs even more average. Reset your Mercedes air conditioning system in Mercedes-Benz GLE one of the to! The reasons why your car cabin air filter, but most manufacturers a. Of GLE as opposed to trying to diagnose an AC problem and fix it replace..., if your air conditioner Problems and Solutions from here, the in! S blowing hot air from the air vents of your vehicles AC level in your AC system your conditioning!
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