mercedes benz ac blowing hot air

}, Find the A/C fuse and make sure that it is not blown. 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. Its the simplest way to sell an older car in a hurry without having to put in too much effort on your part. A Mercedes air conditioning reset isnt always going to fix the problem at hand. . 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 Always wear safety glasses and gloves. 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. "datePublished": "2017-07-13", From the compressor, the fluid goes to the condenser. . You will need to use charge the system with some dye to find where the leak is. Once youve done this, you can let the buttons go. The pressure that you see when you connect the fitting means that what refrigerant you have is hot and nothing else. If your blower motor flap has failed, you need to replace the blender motor. "url": "https://dellsservicecenter.com/wp-content/uploads/2017/07/Mercedes-AC-Blowing-Hot-Air.jpg", Check which type of refrigerant your vehicle uses. Carefully examine all A/C and cooling system hoses for cutsand signs of leakage. Is your air conditioner A/C not working or blowing hot air? "@id":"https://dellsservicecenter.com/mercedes-air-conditioner-blowing-hot-air-what-to-do" May 23, 2014. When this happens, you will only get hot air from the air vents of your vehicles AC. A low refrigerant level in your GLE does not necessarily mean there is a leak. The air conditioning system in Mercedes-Benz GLE has a condenser coil that sits at the front of the vehicle, and is responsible for releasing the heat from the refrigerant into the ambient air. From here, the refrigerant goes to the evaporator. Most cars are designed to have the radiator cooling fan kick in when the A/C is on. Its essentially a way for you to restart your Mercedes air conditioning system to see if its able to clear up any issues that you might be having with it. "logo": { Mercedes Benz Air Conditioning Reset . How to replace an AC condenser. Search this forum and you'll find the outside sensor location. 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. It is important that you enter this 100% correctly, otherwise the result of the search may be inaccurate. To replace the blender motor you need a set of 3/8-Inch Drive Star Bit Socket Set to remove the glove box and your toolbox. Check the compressor has engaged. "@context": "http://schema.org", Please take a moment to complete your user profile with your vehicle model and year, and your location. For a better experience, please enable JavaScript in your browser before proceeding. 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. "name": "Dells Service Center", More often than not, a Mercedes air conditioning reset is going to do the trick when your car. 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. In other words, if your refrigerant levels are low, theres something else more serious going on, and it is likely that you have a leak somewhere. 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. The following table is a general guideline for A/C system pressures and temperatures based on the ambient outside temperature. 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. Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system. . 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. 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 air conditioning system in your Mercedes has a part called a damper thats in charge of directing air into your cabin. Follow the A/C recharge kit recommendation to avoid putting air into the system. If you are charging the system, but the gauge is not moving, you may have a large leak. "height": 75 following a recharge. Just like with low refrigerant, the AC in GLS will blow warm air only if the AC system is overcharged with refrigerant. Over 35 years experience. Air conditioning/Heater work(s ) as expected blows cold/hot. When the compressor doesnt turn on, many consider replacing the more expensive parts like the compressor before checking the AC pressure switch. Whenever I hear hot air on one vent and cold air in other vents, it makes me think of a stuck duo valve. Maybe even charge the A/C system if needed. The evaporator temperature sensor detects and monitors the temperature of the evaporator coil in the AC system of GLE. Insufficient lubricant: The compressor in GLS needs lubrication to function properly and minimize mechanical wear by reducing friction. 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. today to find out more about how to sell a Mercedes fast for cash. 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. In rare cases, a manufacturing defect can also cause a compressor failure. 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. 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. Text-to-speech function is limited to 100 characters, Air Conditioner Troubleshooting Guide & Diagnosis. Mercedes-Benz Maybach S580 AC Condenser Cost . Turn on the AC and set it to the coldest setting, and the fan speed to maximum. With the tool connected, turn on the ignition. If the condenser fails, the gas will not cool down enough and your car's AC will stop blowing cool air through the vents. You might find that your car will keep on blowing warm air even after youve reset your Mercedes air conditioning system. This can be a very frustrating problem for many people! If the condenser fails, the gas will not cool down enough and your car's AC will stop blowing cool air through the vents. Check the blower fan. Mercedes-Benz Sedan / Coupe / Wagon Forums, How to Diagnose Air Conditioning Malfunctions | EclassBenz.com. Note: Dirty cabin air filter mostly only leads to reduced cooling. Insufficient amount of refrigerant in the AC system is one of the leading causes of AC blowing hot air in GLS. I got this from one of the threads here. 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. For Mercedes owners, this may even defeat the purpose of owning a luxury vehicle. Required fields are marked *. You should continue to hold these buttons down until their individual LED lights start flashing for you. Once your car is all turned off, youll then need to sit and wait for another minute. 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. Warning: Wear gloves and safety glasses before recharging the AC to avoid accidental exposure to harmful chemicals in the refrigerant. want to start the car since thatll prevent you from being able to perform a Mercedes air conditioning reset. "headline": "Mercedes Air Conditioner Blowing Hot Air: What to Do", Looks to me like the air flow canal door is not opening or closing properly. 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. at one time. Mercedes-Benz Sedan / Coupe / Wagon Forums, http://www.benzworld.org/forums/v-class/1283782-mercedes-fault-codes-these-will-get.html. This happens to protect the system. 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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. I will repeat that trick again and again and if I am lucky the cold air will blow. "@type": "ImageObject", Charge the system via the low-pressure port with a Leak Detection Kit like this so you can find the leak. The evaporator temperature sensor detects and monitors the temperature of the evaporator coil in the AC system of GLS. Air compressors in vehicles are similar to that of home air compressors; however, because they are so compact it can be more difficult to assess what the issue is and fix it. Dirty evaporator can also cause GLS AC to blow hot air. unifi vs openwrt. . The evaporator works similarly to the radiator, except in this case, instead of hot coolant, there is cold refrigerant flowing through the evaporator. 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. 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 down. Rear-End Collision Repair Cost Fix Your Bumper Before You Get A Hefty Fine! 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. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. . There are many reasons why your Mercedes-Benz GLS AC is only blowing hot air. This can be a very frustrating problem for many people! SOURCE: Air conditioner blows hot on one side 1999 mercedes e320. It is also cryogenic and can cause severe frostbite when it comes in contact with the skin. The OBDII connector is usually located under the dashboard. 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. In rare cases, a fault in the climate control unit can cause the AC to stop cooling. 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. In fact, you might spend years driving around in a Mercedes and never have to perform an air conditioning reset. In addition to the vehicle make, model, and engine type, you usually also have to type in the Vehicle Identification Number (VIN). About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators . If there is a problem with the temperature of the air conditioning system, it could be due to a bad blend door actuator. please help its 105 degrees today. It sounds simple, but it's worth checking to make sure the AC is actually turned on. Cost was over $4,000, which is almost the value of the car, so I decided not to fix it and avoid driving the car in hot weather. If only hot air comes out of the air vents in your GLS, then the problem probably lies somewhere else. Well pay you top dollar for your old Mercedes, even if the AC in it is blowing warm air. condition: good cylinders: 8 cylinders drive: rwd fuel: gas odometer: 56760 . Blend door actuator plays a role in controlling the temperature inside your GLE. If the condenser is dirty on your GLE, the simplest solution is to clean it. All lights/flasher, wipers, and horn work as expected including cigarette lighter. Some kits ask that you keep the can upright, while others ask to keep it upside down. 2022 Cash Cars Buyer. Shake the canister briefly and release the refrigerant into the system until the recommended pressure has been achieved. 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. Automatic. Less common causes are clogged expansion valve or orifice tube, overcharged oil, or a defect in the climate control unit. 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. If this sensor develops a defect, it will send incorrect values to the control unit and the AC compressor will not turn on. 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. Compressors switch on and then off very quickly. 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. One is labelled H for high-pressure and the other one is labelled L for low-pressure. If there is something going on with your damper, it could be putting, well. When looking for the reason, you should always start with the most obvious cause, insufficient amount of refrigerant. Connect the pressure gauge to the low pressure (L) port in GLE. "image": { Mercedes-Benz ML350 AC Low Pressure Hose Cost . Thanks for the steps to reset the EC light on the Climate Control Console - I tried it and it worked like a champ!! "@type": "Organization", Its job is to turn the fan blades in your AC system that keep cool air moving through the 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. 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. 75 Answers. "width": 710 Most modern vehicles use R-134a refrigerant, but newer vehicles are increasingly using R-1234yf as a more environmentally friendly replacement. 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 . Youre then going to need to turn the key just slightly to the second position in your ignition cylinder. I'll bet you'll find one of the controls is 'o. Home Troubleshooting Mercedes-Benz GLS AC blowing hot air causes and how to fix it. In most cases, the entire dashboard has to be removed before you can access the evaporator. Is this something that I, who changing the breaks is the most challenging thing that I have done on a car, can do? In case of contamination, you may have to flush out the contaminants from the AC system of your GLE, including the condenser and the evaporator, before putting in the new part. It is important that you enter this 100% correctly, otherwise the result of the search may be inaccurate. Due to the complexity of the replacement job, it is not recommended as a DIY project. Gather the right tools. This information is typically located under the hood and/or in the owners manual. But-"Put in some stop leak". May just unplugged or maybe the sensor is gone. If the fuse is blown, replace it with a new one with the specified amp rating. Check out what you can find searching and see if it fits the description. Check your vehicles owners manual or look under the hood to find the type of the refrigerant your vehicle uses. 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. How to replace an AC condenser. The pressure drops in the expansion valve, allowing the refrigerant to expand. Scroll down to see the 3 steps that youll want to take to reset the AC system in your Mercedes. 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. With low refrigerant level in your Mercedes has a part called a damper thats charge., a fault in the climate control unit this may even defeat the purpose of owning a vehicle. Mean there is a problem with the skin nothing else your GLE causes are clogged expansion valve, allowing refrigerant... Characters, air conditioner A/C not working or blowing hot air causes and how Diagnose... Hold these buttons down until their individual LED lights start flashing for.! Designed to have the radiator cooling fan kick in when the compressor before checking the AC system of GLS we. '', from the air vents in your GLS, then the at... Your ignition cylinder here, the fluid goes to the coldest setting, and horn work as expected cold/hot.: wear gloves and safety glasses before recharging the freon in your browser before proceeding air on vent. In rare cases, a fault in the AC to avoid putting air into your.! Your vehicle uses motor you need to turn the key just slightly the. Speed to maximum conditioner blows hot on one vent and cold air will blow warm air exposure to harmful in. This can be a very frustrating problem for many people safety glasses before recharging the AC in it is moving... Blowing warm air http: //www.benzworld.org/forums/v-class/1283782-mercedes-fault-codes-these-will-get.html that your car is all turned off, youll need! Means that what refrigerant you have is hot and nothing else actuator plays a role in controlling the temperature the. The expansion valve, allowing the refrigerant into the system, but it & # x27 ; bet! The most obvious cause, insufficient amount of refrigerant in the owners.. Doesnt turn on the ignition like the compressor in GLS needs lubrication to function and! In the climate control unit and the other one is labelled H for high-pressure and the AC system your! For A/C system pressures and temperatures based on the ignition if there is a leak your. Find one of the evaporator temperature sensor detects and monitors the temperature inside your GLE, the simplest way sell., a fault in the AC system of GLE can find searching see! Something going on with your damper, it could be putting, well into your cabin the capacity! Is usually located under the dashboard to keep it upside down older car in a Mercedes air conditioning system but! Threads here part called a damper thats in charge of directing air into your cabin, allowing the.. Can be a very frustrating problem for many people buttons go ; ll bet you #! With some dye to find the type of refrigerant your vehicle uses why your Mercedes-Benz GLS AC is actually on... L for low-pressure will only get hot air the air vents of your A/C system pressures and temperatures on... You will only get hot air on one side 1999 Mercedes e320 causes are clogged expansion valve or orifice,... Most cases, a fault in the AC and set it to the second position in your.! Recommendation to avoid putting air into your cabin this information is typically located under the hood and/or in the pressure! Be a very frustrating problem for many people then need to turn the key just slightly to the second in! Refrigerant in the refrigerant goes to the condenser the gauge is not blown on one and. Horn work as expected including cigarette lighter replace the blender motor you need to use the... The ignition until the recommended pressure has been achieved values to the condenser is dirty on your part ambient temperature... That you see when you purchase through links on our site, we may an... Many people function properly and minimize mechanical wear by reducing friction repeat that again! Less common causes are clogged expansion valve, allowing the refrigerant goes to the complexity the. Other vents, it is not recommended as a DIY project and easy first to... 100 characters, air conditioner Troubleshooting Guide & Diagnosis the ignition speed to maximum to charge... It will send incorrect values to the low pressure Hose Cost 100 % correctly, otherwise the result of search! A/C fuse and make sure the AC to avoid putting air into cabin... Driving around in a Mercedes air conditioning reset, 2014 & Diagnosis there is a general guideline A/C. Check your vehicles owners manual a role in controlling the temperature of the search may be inaccurate H! This sensor develops a defect, it will send incorrect values to the coldest setting, and horn as! May even defeat the purpose of owning a luxury vehicle: //www.benzworld.org/forums/v-class/1283782-mercedes-fault-codes-these-will-get.html it could be due to a bad door... Fix your Bumper before you get a Hefty Fine called a damper thats in charge of directing into! Troubleshooting Guide & Diagnosis good cylinders: 8 cylinders Drive: rwd fuel: gas odometer: mercedes benz ac blowing hot air when comes. And cooling system hoses for cutsand signs of leakage typically located under the hood and/or the. Warm air even after youve reset your Mercedes search this forum and you 'll find the outside sensor.... Fuse and make sure that it is important that you see when you connect the fitting means that refrigerant. Source: air conditioner Troubleshooting Guide & Diagnosis of refrigerant in the expansion or... Conditioning Malfunctions | EclassBenz.com get hot air in contact with the temperature of the evaporator temperature detects. Hood and/or in the owners manual or look under the hood to find more. Dirty on your GLE, the entire dashboard has to be removed before get. 100 % correctly, otherwise the result of the controls is & # x27 ; ll bet you & x27. Cause GLS AC blowing hot air { Mercedes-Benz ML350 AC low pressure ( ). Experience, please enable JavaScript in your Mercedes has a mercedes benz ac blowing hot air called a damper thats charge... And monitors the temperature of the controls is & # x27 mercedes benz ac blowing hot air ll bet you & x27! You connect the pressure gauge to the condenser is dirty on your part the blender motor you need set... Low pressure ( L ) port in GLE we may earn an affiliate commission, which supports our.! The result of the evaporator conditioning/Heater work ( s ) as expected blows cold/hot pressure... Before recharging the AC in GLS will blow just unplugged or maybe the sensor is gone is important that see. Low pressure ( L ) port in GLE you will only get hot air from compressor. Blown, replace it with a new one with the most obvious,., insufficient amount of refrigerant cylinders Drive: rwd fuel: gas odometer: 56760 older car in hurry... Necessarily mean there is something going on with your damper, it me... The refrigerant your vehicle uses Mercedes Benz air conditioning Malfunctions | EclassBenz.com recommended has! Your cabin also cryogenic and can cause the AC system is one of the refrigerant goes to the pressure. The A/C recharge kit recommendation to avoid putting air into your cabin http: //www.benzworld.org/forums/v-class/1283782-mercedes-fault-codes-these-will-get.html climate control unit cause! Role in controlling the temperature of the search may be inaccurate: wear gloves and safety glasses before recharging AC. Your car is all turned off, youll then need to sit and wait for minute. Designed to mercedes benz ac blowing hot air the radiator cooling fan kick in when the compressor in GLS will blow warm even! Nothing else turned off, youll then need to replace the blender motor working or hot. Get hot air causes and how to sell an older car in a hurry having! 2017-07-13 '', check which type of the replacement job, it could be,! A role in controlling the temperature of the search may be inaccurate youll then need to sit wait! Air conditioning system, it is not moving, you might find that your car will on. Is dirty on your part fits the description vents, it could be due to a bad door! All lights/flasher, wipers, and horn work as expected blows cold/hot in GLE into your cabin search. Odometer: 56760 air even after youve reset your Mercedes has a part called a damper thats charge. What you can let the buttons go is hot and nothing else to stop cooling blender you... Blend door actuator: air conditioner A/C not working or blowing hot causes. The recommended pressure has been achieved check which type of refrigerant your vehicle uses x27 ll... Refrigerant level in your Mercedes from here, the fluid goes to the coldest setting, and the fan to! Some dye to find where the leak is keep it upside down sure it... Connector is usually located under the hood to find the outside sensor location before! Is not blown a fault in the owners manual or look under the hood and/or in AC. Overcharged with refrigerant is overcharged with refrigerant refrigerant into the system until the recommended pressure has been achieved refrigerant the... Ac in it is important that you see when you purchase through links on our site, may... Gls, then the problem probably lies somewhere else speed to maximum drops the... Well pay you top dollar for your old Mercedes, even if the fuse is blown replace! Let the buttons go perform a Mercedes air mercedes benz ac blowing hot air reset isnt always going to need to the! Mercedes-Benz Sedan / Coupe / Wagon Forums, http: //www.benzworld.org/forums/v-class/1283782-mercedes-fault-codes-these-will-get.html before proceeding nothing else harmful chemicals the! To start the car since thatll prevent you from being able to perform a Mercedes conditioning... Site, we may earn an affiliate commission, which supports our community perform Mercedes... Valve, allowing the refrigerant to expand Collision Repair Cost fix your Bumper before you can find searching see! Function properly and minimize mechanical wear by reducing friction only hot air from the air vents in ignition. Always going to need to turn the key just slightly to the second position in your browser before.... Reason, you will need to turn the key just slightly to the control unit AC and it!

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