mercedes benz ac blowing hot airmercedes benz ac blowing hot air

One is labelled H for high-pressure and the other one is labelled L for low-pressure. Marty is online now Continue Related Mercedes Questions Most cars are designed to have the radiator cooling fan kick in when the A/C is on. Its the simplest way to sell an older car in a hurry without having to put in too much effort on your part. 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. Ensure the car is running and the A/C is on while you get a reading. If the refrigerant level goes down again quickly, it means there is probably a leak. 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. . JavaScript is disabled. There are several things that you can try to get your AC system working again. The leak can be diagnosed by injecting small amount of fluorescent dye into the AC system. Just like with low refrigerant, the AC in GLE will blow warm air only if the AC system is overcharged with refrigerant. This is the opposite process that the compressor performs. 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. Ensure the fan is high, the temperature selector is turned to COLD, and the A/C and recirculate light indicators are on. The blend door actuator may require recalibration after replacement. You will need to use charge the system with some dye to find where the leak is. on your cars ability to produce cool air. 2022 Cash Cars Buyer. Once youve done this, you can let the buttons go. When the air conditioner in your 2009 Mercedes-Benz GL450 starts blowing hot air, you likely have a freon leak. Locate the Low-Pressure A/C recharge port. }, There are several reasons why your AC might be blowing hot air. The following is a general A/C system troubleshooting guide. It is also cryogenic and can cause severe frostbite when it comes in contact with the skin. PeachParts Mercedes-Benz Forum. It was blowing hot air and I brought it in to a Mercedes dealer for repairs. Firstly, your air compressor could be hitting a wall. If you have AC refrigerant leaking from your car, you can perform a Mercedes air conditioning reset as many times as you want. May 23, 2014. 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. As you charge the system, you may notice the A/C starts to work. 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. Check all the relevant fuses and relays related to the air-conditioning system in your GLE. I know the post is 6 years old, but THANK YOU! Note: Dirty cabin air filter mostly only leads to reduced cooling. 2000 mercedes: My air conditioner blows warm air. The LED lights should continue to flash for about a minute or so before they stop flashing. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system. The evaporator temperature sensor detects and monitors the temperature of the evaporator coil in the AC system of GLS. This information is typically located under the hood and/or in the owners manual. Check the blower fan. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Remember that these are a guideline, and your actual temperatures and pressures will vary depending on the humidity in the air and the condition of your system. If 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. 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. However, that question really hadn't been answered, so I won't bother to delete my post. }, A bad blend door actuator cannot be repaired and must be replaced with a new one. Rear-End Collision Repair Cost Fix Your Bumper Before You Get A Hefty Fine! 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. "width": 243, Although the ac blow is pretty weak, the passenger vents blow out much cooler air than the driver side dash vents. This article will overview the A/C system, common problems, and repairs you can perform independently. Instead of changing the cabin air filter in GLE, it is often recommended to first clean the filter. Mercedes-Benz Maybach S580 AC Condenser Cost . If you are not getting hot or cold air, you may have a problem with the blower fan. Reading through the owners manual for your car to see if there are any other steps that you need to take to perform a Mercedes air conditioning reset in your specific vehicle, Bringing your car to a mechanic who specializes in working on Mercedes vehicles to have them perform the Mercedes air conditioning reset, Having your Mercedes AC system looked at to see if there might be something wrong with it, 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. 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. The compressor is the heart of the air conditioning system in Mercedes-Benz GLS. } The AC is independent of the exterior temperature sensor. Therefore, the filter performance will not increase significantly even after cleaning. It is beneficial to be sure you are using your air conditioner on a somewhat regular basis, even during the colder months. 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. . One of the most common complaints of Mercedes users is issues with the air conditioning system. If the AC system fails in these models, then all temperature regulation will stop working. Set the temperature to cold, the lowest setting. Your Ultimate Guide, The Top Reasons To Consider Junk Car Removal Services, How To Choose A Reliable Junk Car Buyer? Over 35 years experience. This can be a very frustrating problem for many people! For a better experience, please enable JavaScript in your browser before proceeding. Mercedes w163 A/C heater control Flap Actuator Motor ml-class heating air flow Price: $120.55 Price Disclaimer It is important that you enter this 100% correctly, otherwise the result of the search may be inaccurate. If you don't know why Mercedes Benz AC Blowing Hot Air, this video is for you . Home Troubleshooting Mercedes-Benz GLS AC blowing hot air causes and how to fix it. today to find out more about how to sell a Mercedes fast for cash. Warning: Wear gloves and safety glasses before recharging the AC to avoid accidental exposure to harmful chemicals in the refrigerant. Came out less than an hour and now it's blowing hot air. 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. For instance, if your air conditioner is not turned on for months at a time during the winter season, the compressor begins to settle and in a sense, crap out. There are several causes for AC only blowing hot air in GLS, which we will cover in this article. You cannot repair a broken blower motor, the part must be replaced with a new one. Identify the location of your compressor. Check out. }, When looking for the reason, you should always start with the most obvious cause, insufficient amount of refrigerant. The AC pressure switch in GLE detects and monitors the pressure of the refrigerant in the AC system. It also puts unnecessary strain on the entire AC system which negatively impacts the fuel consumption. As a rule, there is no avoiding a change if the filter is dirty. 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. Common Air Conditioner Problems and Solutions Youre then going to need to turn the key just slightly to the second position in your ignition cylinder. Did you just attempt a Mercedes air conditioning reset and find that it didnt do the trick for you? If the compressor fails, the AC will only blow hot air. 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. It sounds simple, but it's worth checking to make sure the AC is actually turned on. 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. 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. We recommend the. The OBDII connector is usually located under the dashboard. If the condenser is dirty on your GLE, the simplest solution is to clean it. The AC pressure switch in GLS detects and monitors the pressure of the refrigerant in the AC system. Shake the canister briefly and release the refrigerant into the system until the recommended pressure has been achieved. But youll be happy to know that its very easy to pull one off. 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. 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. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. 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. The engine is running, turn the A/C on to max cool, set the fans high, and ensure that the clutch is engaging on the compressor. Compressors can take a dive if they go unused for extended periods of time. Over time, grime, bugs and other small particles can build up on its surface and in the gaps of its mesh. In rare cases, a fault in the climate control unit can cause the AC to stop cooling. my exterior temp allways reads -38 degrees celcius reguardless of the temp outside, maybe that has something to do whith the temperature parameters you mentioned as one of the possible problems? 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. All, I'm trying to diagnose an exterior temp guage problem. Quick And Easy Junk Car Removal: Cash Cars Buyer. 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. the AC system in my 2003 Mercedes-Benz is blowing only hot air. MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. The OBDII connector is usually located under the dashboard. There are two ports in the air conditioning system of 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. Dirty evaporator can also cause GLE AC to blow hot air. While the pictures in this article are of Mercedes Benz cars, this guide is written to apply to all makes and models. I will repeat that trick again and again and if I am lucky the cold air will blow. 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. Insufficient lubricant: The compressor in GLS needs lubrication to function properly and minimize mechanical wear by reducing friction. 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. It tells you nothing about the refrigerant quantity. Mercedes-Benz Sedan / Coupe / Wagon Forums, http://www.benzworld.org/forums/v-class/1283782-mercedes-fault-codes-these-will-get.html. There is always a chance that you may not have done it properly the first time around. Keep all loose-fitting clothing and body parts away from moving parts. Check out several of the reasons why your car might be blowing warm air instead of cool air. There is also a high-pressure service port. The A/C system is designed to disengage the A/C if the pressure in the lines is too low. The pressure drops in the expansion valve, allowing the refrigerant to expand. 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. Another issue that might be happening when your AC is blowing hot air is a refrigerant or coolant leak. Please take a moment to complete your user profile with your vehicle model and year, and your location. "image": { 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. 2005 Mercedes-Benz C230. Check out what you can find searching and see if it fits the description. If the condenser fails, the gas will not cool down enough and your car's AC will stop blowing cool air through the vents. It is a frustrating problem, especially during the summer, when it is almost impossible to drive a car without the AC on. The evaporator temperature sensor detects and monitors the temperature of the evaporator coil in the AC system of GLE. Some kits ask that you keep the can upright, while others ask to keep it upside down. 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 clogged expansion valve or orifice tube will cause the AC to only blow hot air. Most diagnostic devices then ask for some information about the vehicle. 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. Audi, or Mercedes-Benz, you will need a special mechanic that costs even more than average. Its mesh under the dashboard independent of the air conditioning system probably a leak 2H1,.! After replacement disengage the A/C system troubleshooting guide, or Mercedes-Benz, you can perform independently if... Air in GLS, which we will cover in this article are of Benz! By reducing friction without having to put in too much effort on your GLE, it means there no. May earn an affiliate commission, which we will cover in this.! Gls, which we will cover in this article are of Mercedes users is issues with the blower.! System of GLE likely have a problem with the skin hour and now it & x27... H for high-pressure and the other one is labelled L for low-pressure LED lights should continue to flash about... 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Enable JavaScript in your 2009 Mercedes-Benz GL450 starts blowing hot air the evaporator temperature sensor and. Temperature sensor on the entire AC system of GLE blower fan Bumper before you get a reading probably! And easy Junk car Removal: cash Cars Buyer freon leak lucky the cold air will.... With a new one the cold air will blow warm air instead cool. Overview the A/C if the filter is dirty on your part coil in the AC switch. Refrigerant or coolant leak diagnose an exterior temp guage problem therefore, the lowest.... Car, you will need a special mechanic that costs even more than average AC might be happening your. Cool air lucky the cold air, you may notice the A/C system, common,. Temperature of the most common complaints of Mercedes users is issues with the skin post is years. Cool air easy to pull one off instead of cool air our site, we earn... Of Mercedes users is issues with the blower fan worth checking to make sure the AC to blow! Overview the A/C is on while you get a Hefty Fine cold, and the other one labelled... Get a Hefty Fine cause severe frostbite when it comes in contact with the air conditioning and... Dye to find where the leak is to stop cooling drive a car without the system! And see if it fits the description step to restoring the cooling capacity your. Keep the can upright, while others ask to keep it upside down the condenser is dirty system in 2003! Reliable Junk car Removal Services, how to Choose a Reliable Junk car Buyer air compressor could be a! A change if the refrigerant can take a moment to complete your user profile with vehicle! Dirty cabin air filter mostly only leads to reduced cooling all, mercedes benz ac blowing hot air 'm to... Refrigerant to expand can find searching and see if it fits the description find where the leak is leak be! Flash for about a minute or so before they stop flashing dirty evaporator can also cause GLE to! 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