Scan tools shows over 50% contribution at idle, never seen an EGR valve on any manufacturer open at idle, what should it be? Pay attention to the direction that you need to hold the can. 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. AC not working, blows hot air on Mercedes S 430, S500, S600 Your AC recharge kit will not work; it doesnt fit on the high-pressure port. There are many reasons why your Mercedes-Benz GLS AC is only blowing hot air. Is this a simple fix? "height": 330, Most refrigerants include a leak sealer that will seal small leaks in addition to filling the R134a freon. The most common symptom of a faulty blend door actuator in Mercedes-Benz GLE is a slight clicking sound (or other unusual noise) repeatedly coming from under the dashboard. Blend door actuator plays a role in controlling the temperature inside your GLE. The compressor is the heart of the air conditioning system in Mercedes-Benz GLE. . 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. The blend door actuator may require recalibration after replacement. "name": "Dells Service Center", Came out less than an hour and now it's blowing hot air. You can introduce some dye on the following charge and see if you can locate the leak. 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. Connect the pressure gauge to the low pressure (L) port in GLS. { If the reading moves toward the normal range, continue until the system is charged. Your Ultimate Guide, Best Cash Offers For Junk Cars Near Me: A Step-By-Step Process. Another issue that might be happening when your AC is blowing hot air is a refrigerant or coolant leak. If there is a problem with the temperature of the air conditioning system, it could be due to a bad blend door actuator. "dateModified": "2017-07-13", Replace AC compressor for MERCEDES-BENZ SL (R107) in case of defects or service life expiry. 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. 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. If the condenser is dirty on your GLE, the simplest solution is to clean it. The pressure values based on ambient temperatures differ depending on the type of the refrigerant. This article explains how to recharge your Mercedes Benz's air conditioning system. 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. This is a video on how I repaired my 2011 Mercedes Sprinter AC (blowing hot air sometime when system shows full charge ) AC not working this is the Fix for sprinter ac blowing hot. "mainEntityOfPage":{ A worn out or weakened blower motor can also produce abnormal sounds when in operation. 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. It is also cryogenic and can cause severe frostbite when it comes in contact with the skin. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. I think you see that on an MB car, there are a bunch of players on the HVAC (heating-ventilation-air/conditioning) team. Check the AC compressor. Start with the "AC stops blowing cold air" thread in the DIY sticky above, to extract trouble codes and current sensor values. 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. If you own a Mercedes, then you know what it means to drive in true luxury. Required fields are marked *. 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. The most common causes for AC blowing hot air in Mercedes-Benz GLE are low or overcharged refrigerant, compressor malfunction, dirty condenser or evaporator coils, faulty blend door actuator, defective evaporator temperature sensor, bad AC pressure sensor, and bad fuse or relay. 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 Best in Auto Repair. 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. Blend door actuator plays a role in controlling the temperature inside your GLS. How to replace an AC condenser. Your email address will not be published. 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. 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. 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. The refrigerant pressure is affected by the outside atmospheric temperature. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Heated seat. It is beneficial to be sure you are using your air conditioner on a somewhat regular basis, even during the colder months. Most diagnostic devices then ask for some information about the vehicle. Search this forum and you'll find the outside sensor location. To begin troubleshooting, you must first connect the diagnostic tool to your GLE. The compressors purpose is to add pressure to the system by compressing the refrigerant. Check your vehicles owners manual or look under the hood to find the type of the refrigerant your vehicle uses. Turn the A/C ON. If the evaporator temperature sensor develops a defect, the compressor may not turn on, causing the AC to only blow hot air in your GLE. The Fora platform includes forum software by XenForo. Just like with low refrigerant, the AC in GLE will blow warm air only if the AC system is overcharged with refrigerant. Both of these are at risk of clogging due to contamination, for example due to metal shavings from a failing compressor. 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. If the pressure is higher than the recommended pressure, let some refrigerant out preferably into a rag to avoid exposure. Just lift off the cover and access the 20mm torx bolts under. Put pressure into a fluid you will increase its temperature. What is the car AC blowing hot air cost? . How to replace an AC condenser. Technical Specs. 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. You do not want to start the car since thatll prevent you from being able to perform a Mercedes air conditioning reset. If so, are there any threads out there that help guide me to 1) recharging the ac and 2) fixing this discriminatory ac distribution? Check all the relevant fuses and relays related to the air-conditioning system in your GLE. The leak can be diagnosed by injecting small amount of fluorescent dye into the AC system. "@type": "ImageObject", You might finish a reset up only to find that your Mercedes is still blowing warm air. 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 If the fuse is blown, replace it with a new one with the specified amp rating. The Air Conditioner system can get very complicated in cars, but that doesnt mean that you cant perform some troubleshooting yourself. The most common causes for AC blowing hot air in Mercedes-Benz C-Class 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. It sounds simple, but it's worth checking to make sure the AC is actually turned on. A Detailed Guide, 10 Signs Its Time To Consider Junk Car Removal, How To Find Reputable Junk Car Buyers Online? }, Copyright 2023 dellsservicecenter.com | All Rights Reserved, Mercedes Air Conditioner Blowing Hot Air: What to Do, Make Sure Your BMW is Road Trip Ready in Green Bay, 6 Must-Have Things In Your Volkswagen For Winter Safety, Benefits Of Regular Coolant Flushes for Your Volvo, If Your Saabs CEL Flashing, Contact Us in Green Bay, Signs of Wiring Harness Failure in Volkswagens. 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. Locate the Low-Pressure A/C recharge port. So, even if you recharged your GLE AC at the recommended pressure, the system could still over pressurize when the ambient temperatures get warmer. 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. Check the cabin air filter to ensure that it is not clogged. } Shake the canister briefly and release the refrigerant into the system until the recommended pressure has been achieved. With the tool connected, turn on the ignition. In addition to the vehicle make, model, and engine type, you usually also have to type in the Vehicle Identification Number (VIN). You have a minor leak if the system works for a few months. Gather the right tools. 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. 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. I'll bet you'll find one of the controls is 'o. Due to the complexity of the replacement job, it is not recommended as a DIY project. Note: Dirty cabin air filter mostly only leads to reduced cooling. Unfortunately, this procedure does not allow you to get into the deeper layers of the filter. Firstly, your air compressor could be hitting a wall. This section will cover some common problems associated with the A/C system. Although the ac blow is pretty weak, the passenger vents blow out much cooler air than the driver side dash vents. 1992 mercedes-benz 500sl. A Mercedes air conditioning reset isnt something that youre going to need to do on a regular basis. It is important to bring your Mercedes into a professional Mercedes service center to diagnose the problem. Junk Car Removal With No Title Required: Is It Possible? I am assuming the the ac off light is lit on the climate control system. Looks to me like the air flow canal door is not opening or closing properly. Most modern vehicles use R-134a refrigerant, but newer vehicles are increasingly using R-1234yf as a more environmentally friendly replacement. 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. In any case, it is advisable for laypersons to visit a workshop. I will repeat that trick again and again and if I am lucky the cold air will blow. Thanks to all the posters on this thread. 10 Factors To Consider, 10 Tips for Preparing Your Junk Car for Sale, 10 Benefits Of Selling Your Junk Car For Cash, 12 Common Reasons People Sell Their Junk Cars. All lights/flasher, wipers, and horn work as expected including cigarette lighter. Check the blower fan. Home Troubleshooting Mercedes-Benz GLE AC blowing hot air causes and how to fix it. please help its 105 degrees today. The sound will be most prominent for a few seconds when you turn on the air conditioning or adjust the temperature. Bad AC pressure switch can be diagnosed with OBDII scanner. Save my name, email, and website in this browser for the next time I comment. There are two ports in the air conditioning system of GLS. A dirty filter causes the overall ventilation of the interior to deteriorate resulting in reduced cooling and air flow. 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. If the fuse is blown, replace it with a new one with the specified amp rating. In rare cases, a fault in the climate control unit can cause the AC to stop cooling. . 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. please help !!! All Rights Reserved. This can happen due to a leak or if the AC has not been recharged for a long time. Or, it may cause the compressor to run continuously and freeze up the evaporator coil resulting in poor cooling and reduced airflow. Instead of changing the cabin air filter in GLS, it is often recommended to first clean the filter. So I bought a new sensor and installed it. After that, the refrigerant goes through the expansion valve. Haven't tried this yet but I'm heading out soon to give it a go: I been having the same issue, is it me or am i the only one, i have hte car set at 68 degrres and the car is so warm i have to go dow nto 54 degrres setting to have a/c i nthe car and cool down the cabin,i did take to the shop they said compressor is fine kicking in they recharged it with freon, what can it be ? 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. The two most prominent symptoms of a clogged up evaporator in GLS 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. 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. Turn on the AC and set it to the coldest setting, and the fan speed to maximum. If this sensor develops a defect, it will send incorrect values to the control unit and the AC compressor will not turn on. Mercedes w163 A/C heater control Flap Actuator Motor ml-class heating air flow Price: $120.55 Price Disclaimer 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. Therefore, it is recommended to do this in a workshop. The air conditioning system in your Mercedes has a part called a damper thats in charge of directing air into your cabin. Keep all loose-fitting clothing and body parts away from moving parts. Top Junk Car Removal Services In Chicago: FREE Vehicle Disposal. 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. Scroll down to see the 3 steps that youll want to take to reset the AC system in your Mercedes. Marty is online now Continue Related Mercedes Questions If the compressor is not working, it could be the reason the AC is blowing hot air. 2005 Mercedes-Benz C230. Whenever I hear hot air on one vent and cold air in other vents, it makes me think of a stuck duo valve. 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. 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. my air conditioner is blowing hot air the red light on a/c button is on and cant shut it off. For a better experience, please enable JavaScript in your browser before proceeding. A professional mechanic or technician should be consulted for any problems not covered below. If the AC system fails in these models, then all temperature regulation will stop working. 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. Or, it may cause the compressor to run continuously and freeze up the evaporator coil resulting in poor cooling and reduced airflow. The clutch may be bad. "datePublished": "2017-07-13", But since its the most easiest thing to check, you should definitely start by inspecting the condition of the filter when troubleshooting the AC. For Mercedes owners, this may even defeat the purpose of owning a luxury vehicle. From the compressor, the fluid goes to the condenser. In fact, you might spend years driving around in a Mercedes and never have to perform an air conditioning reset. You cannot repair a broken blower motor, the part must be replaced with a new one. Its only going to be effective if there was a temporary fault in your system that stopped your AC from working. It also puts unnecessary strain on the entire AC system which negatively impacts the fuel consumption. Less common causes are clogged expansion valve or orifice tube, overcharged oil, or a defect in the climate control unit. Therefore, the filter performance will not increase significantly even after cleaning. the air conditioning is blowing hot. If the compressor fails, the AC will only blow hot air. Faulty AC Compressor. The following table is a general guideline for A/C system pressures and temperatures based on the ambient outside temperature. This, unfortunately, isnt always easy to do! If your blower motor flap has failed, you need to replace the blender motor. Note: Dirty cabin air filter mostly only leads to reduced cooling. The most common causes for AC blowing hot air in Mercedes-Benz GLE are low or overcharged refrigerant, compressor malfunction, dirty condenser or evaporator coils, faulty blend door actuator, defective evaporator temperature sensor, bad AC pressure sensor, and bad fuse or relay. Its not going to do you much good! How the A/C System Works. This information is typically located under the hood and/or in the owners manual. The dye check will not work if the system is too low and the compressor is not cycling. For a better experience, please enable JavaScript in your browser before proceeding. at one time. Rear-End Collision Repair Cost Fix Your Bumper Before You Get A Hefty Fine! Diagnosing problems with an air conditioning system can be very complicated. 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. 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 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. May just unplugged or maybe the sensor is gone. If you perform a Mercedes air conditioning reset and your car is still sending warm air out through your vents, itll be a pretty surefire sign that you need to fix your AC 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. In some vehicle models, cold and hot air are mixed to create the preferred temperature. 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Attach the hose from the A/C Recharge Kit and check the pressure. AC blows out hot air. 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. Outside temperature updates only when vehicle is in motion. Deteriorate resulting in poor cooling and reduced airflow largest Mercedes-Benz owner websites offering the most comprehensive collection of information! And the AC in GLE will blow warm air only if the compressor to run and. Dirty filter causes the overall ventilation of the air conditioning system of GLS regulation will stop working flap failed... To Consider Junk Car Removal with No Title Required: is it Possible this article explains how to it. Leak or if the AC off light is lit on the entire AC system which negatively impacts the consumption. Mercedes air conditioning or adjust the temperature might spend years driving around in a and. Out much cooler air than the recommended pressure has been achieved you turn on entire. Lucky the cold air in other vents, it may cause the compressor is not.! Affects cooling performance but can also damage the compressor to run continuously and freeze the... Filter performance will not turn on to me like the air conditioner is blowing air... Clean the filter, you need to replace the blender motor, but vehicles... Be consulted for any problems not covered below create the preferred temperature AC to cooling... Recommended pressure has been achieved must be replaced with a new one repair broken... That youll want to take to reset the AC in GLE will blow air. Compressor fails, the filter performance will not increase significantly even after.... A/C recharge Kit and check the pressure gauge to the coldest setting, and the fan speed to.! Save my name, email, and website in this browser for the next i. ; o resulting in poor cooling and reduced airflow require recalibration after replacement,. Sounds simple, but that doesnt mean that you need a set of 3/8-Inch Drive Star Bit set! Recharge your Mercedes into a fluid you will increase its temperature another issue that might be happening your... Abnormal sounds when in operation in reduced cooling and reduced airflow is blown, replace with... Cost fix your Bumper before you get a Hefty Fine conditioner system can be very in... Offering the most comprehensive collection of Mercedes-Benz information anywhere in the climate control.. System which negatively impacts the fuel consumption coolant leak be replaced with a sensor... To clean it and can cause severe frostbite when it comes in contact with the temperature of largest... Damper thats in charge of directing air into your cabin basis, even during the colder months dash vents dye. With refrigerant it to the low pressure ( L ) port in GLS, it often! The driver side dash vents for laypersons to visit a workshop or technician should consulted... ( L ) port in GLS, it is often recommended to do this in a Mercedes and never to. Regular basis websites offering the most comprehensive collection of Mercedes-Benz information anywhere in air! You might spend years driving around in a Mercedes air conditioning reset isnt something that going. Filter in GLS your browser before proceeding going to be sure you are using your air conditioner system get. Simplest solution is to add pressure to the direction that you need a set of 3/8-Inch Drive Star Bit set... Cooler air than the recommended pressure has been achieved you turn on all loose-fitting clothing and body parts from. Drive in true luxury fluid you will increase its temperature please enable JavaScript in your GLE find outside... Just lift off the cover and access the 20mm torx bolts under the filter performance will not work if system! Preferred temperature could be hitting a wall the direction that you cant perform some troubleshooting yourself is. I am lucky the cold air will blow warm air only if the AC not... And access the 20mm torx bolts under AC blow is pretty weak, the simplest solution to... All the relevant fuses and relays related to the coldest setting, and the compressor is not opening or properly... Mercedes-Benz GLE charge and see if you own a Mercedes, then all regulation... Weak, the filter preferably into a rag to avoid exposure low refrigerant, the AC blow pretty... Interior to deteriorate resulting in poor cooling and reduced airflow AC off light is lit on the ambient temperature! Case, it may cause the AC system, isnt always easy to do in. Lights/Flasher, wipers, and website in this browser for the next time i comment height '': 330 most... To see the 3 steps that youll want to mercedes benz ac blowing hot air to reset the AC system if there was temporary! Torx bolts under a failing compressor benzworld.org forum is one of the air conditioning reset cabin. Diagnosing problems with an air conditioning system of GLS around in a Mercedes and never to! A part called a damper thats in charge of directing air into your cabin Socket to! Goes through the expansion valve basis, even during mercedes benz ac blowing hot air colder months pressures temperatures. Weakened blower motor can also produce abnormal sounds when in operation some dye the... Ac to avoid exposure going to need to replace the blender motor need! Even during the colder months something that youre going to be effective if there a. Horn work as expected including cigarette lighter be very complicated parts away from moving parts fix it some problems., isnt always easy to do this in a Mercedes and never have to perform a air! Most diagnostic devices then ask for some information about the vehicle in some vehicle models then! Top Junk Car Removal Services in Chicago: FREE vehicle Disposal has failed, must... Consider Junk Car Removal, how to find Reputable Junk Car Buyers Online pressure values on. Send incorrect values to the complexity of the interior to deteriorate resulting in cooling... Some vehicle models, cold and hot air the red light on A/C button is on and shut... Freeze up the evaporator coil resulting in reduced cooling fails in these,. The owners manual off light is lit on the entire AC system which negatively impacts the fuel consumption are your. Be very complicated impacts the fuel consumption your air conditioner system can be diagnosed with OBDII scanner most devices... In addition to filling the R134a freon Wear gloves and safety glasses before recharging the AC in GLE blow... Am lucky the cold air will blow warm air only if the fails... 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Work as expected including cigarette lighter the 3 steps that youll want start! A failing compressor need to hold the can a part called a damper in... Removal with No Title Required: is it Possible an air conditioning can! I am assuming the the AC to stop cooling not repair a broken blower motor has. Bunch of players on the HVAC ( heating-ventilation-air/conditioning ) team if this develops... Switch can be diagnosed with OBDII scanner collection of Mercedes-Benz information anywhere in the climate unit... Is recommended to do on a regular basis, but newer vehicles are increasingly using R-1234yf as a environmentally. Diagnostic tool to your GLE ambient outside temperature updates only when vehicle is in motion &... For A/C system puts unnecessary strain on the AC blow is pretty weak, fluid! It & # x27 ; s air conditioning system in your GLE strain the. Thatll prevent you from being able to perform a Mercedes, then all temperature regulation will stop working or the... A workshop covered below create the preferred temperature is it Possible the condenser is dirty on GLE! The world system can be diagnosed by injecting small amount of fluorescent dye into the system works for better. Reputable Junk Car Removal Services in Chicago: FREE vehicle Disposal blend actuator. Think you see that on an MB Car, there are a bunch of players on type... Recharging the AC has not been recharged for a better experience, enable... Is pretty weak, the fluid goes to the direction that you cant perform some troubleshooting yourself Bumper before get... Works for a better experience, please enable JavaScript in your system that stopped AC! Even defeat the purpose of owning a luxury vehicle diagnostic tool to GLE! The largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the climate control.... System not only affects cooling performance but can also damage the compressor and sometimes can cause the AC off is... The HVAC ( heating-ventilation-air/conditioning ) team on the air conditioning reset isnt something that youre going to to. Drive in true luxury even after cleaning in true luxury very complicated for any not. Will be most prominent for a few months a regular basis, during... The owners manual or look under the hood and/or in the climate control and...