mercedes benz ac blowing hot air

Therefore, it is recommended to do this in a workshop. the system is charged, but the compressor is not Ask an Expert Car Questions Mercedes Repair Marty, Mercedes Technician 57,141 Satisfied Customers Bosch Certified Master Tech. Most diagnostic devices then ask for some information about the vehicle. 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 . Connect the pressure gauge to the low pressure (L) port in GLE. Unfortunately, this procedure does not allow you to get into the deeper layers of the filter. Quick And Easy Junk Car Removal: Cash Cars Buyer. To begin troubleshooting, you must first connect the diagnostic tool to your GLE. This can happen due to a leak or if the AC has not been recharged for a long time. If the fuse is blown, replace it with a new one with the specified amp rating. Check the owners manual of your vehicle or the fuse box cover to find the exact location of the AC fuses. If the condenser fails, the gas will not cool down enough and your car's AC will stop blowing cool air through the vents. 2000 mercedes: My air conditioner blows warm air. Troubleshooting the A/C Some kits ask that you keep the can upright, while others ask to keep it upside down. OP is no longer with us. In most cases, the entire dashboard has to be removed before you can access the evaporator. Check out. Shake the canister briefly and release the refrigerant into the system until the recommended pressure has been achieved. Youll also need to prepare to pay whatever its going to cost to fix your AC system. If you have low pressure, then check for leaks. This is where Cash Cars Buyer can step in and help! Most modern vehicles use R-134a refrigerant, but newer vehicles are increasingly using R-1234yf as a more environmentally friendly replacement. I have a 2004 Mercedes E500 and am having a problem with the rear console air conditioning. The evaporator works similarly to the radiator, except in this case, instead of hot coolant, there is cold refrigerant flowing through the evaporator. Are we looking at dates of these post? But since its the most easiest thing to check, you should definitely start by inspecting the condition of the filter when troubleshooting the AC. "dateModified": "2017-07-13", The Air Conditioner system can get very complicated in cars, but that doesnt mean that you cant perform some troubleshooting yourself. This article explains how to recharge your Mercedes Benz's air conditioning system. A low refrigerant level in your GLE does not necessarily mean there is a leak. A bad blend door actuator cannot be repaired and must be replaced with a new one. I know the post is 6 years old, but THANK YOU! However, that question really hadn't been answered, so I won't bother to delete my post. So if youre facing a problem of compressor not turning on in your GLS, you should first check if this little, inexpensive sensor is working properly. Its job is to turn the fan blades in your AC system that keep cool air moving through the system. If the reading moves toward the normal range, continue until the system is charged. In addition to the vehicle make, model, and engine type, you usually also have to type in the Vehicle Identification Number (VIN). Check your vehicles owners manual or look under the hood to find the type of the refrigerant your vehicle uses. 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. The following table is a general guideline for A/C system pressures and temperatures based on the ambient outside temperature. The pressure drops in the expansion valve, allowing the refrigerant to expand. 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. Gather the right tools. 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. Well pay you top dollar for your old Mercedes, even if the AC in it is blowing warm air. Contact us today to find out more about how to sell a Mercedes fast for cash. If the AC system fails in these models, then all temperature regulation will stop working. It is 2004 ML 350 Mercedes. Both of these are at risk of clogging due to contamination, for example due to metal shavings from a failing compressor. 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. Or, it may cause the compressor to run continuously and freeze up the evaporator coil resulting in poor cooling and reduced airflow. want to start the car since thatll prevent you from being able to perform a Mercedes air conditioning reset. So in the expansion unit, the refrigerant temperatures drop below the outside temperature. The reason for this is that if you have low levels of refrigerant, you cannot simply top off the fluid level; the AC system is a closed system that should not have a depletion of refrigerant at any time. AC blows out hot air. Your email address will not be published. If only hot air comes out of the air vents in your GLE, then the problem probably lies somewhere else. Although the ac blow is pretty weak, the passenger vents blow out much cooler air than the driver side dash vents. The air conditioning system in Mercedes-Benz GLS 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. Does someone know what the issue is? As a rule, there is no avoiding a change if the filter is dirty. You do not want to start the car since thatll prevent you from being able to perform a Mercedes air conditioning reset. . my air conditioner is blowing hot air the red light on a/c button is on and cant shut it off. To begin troubleshooting, you must first connect the diagnostic tool to your GLS. Pay attention to the direction that you need to hold the can. "author": { . After that, the refrigerant goes through the expansion valve. Check the cabin air filter to ensure that it is not clogged. It is important that you enter this 100% correctly, otherwise the result of the search may be inaccurate. I have a 2000 S430. Its something thats also sometimes called a Mercedes climate control reset. Text-to-speech function is limited to 100 characters, Air Conditioner Troubleshooting Guide & Diagnosis. "@id":"https://dellsservicecenter.com/mercedes-air-conditioner-blowing-hot-air-what-to-do" Find a Shop. 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. Less common causes are clogged expansion valve or orifice tube, overcharged oil, or a defect in the climate control unit. If you drive your vehicle in dusty or polluted environment, the filter can get dirty much sooner than manufacturers recommendation. A dirty filter causes the overall ventilation of the interior to deteriorate resulting in reduced cooling and air flow. One is labelled H for high-pressure and the other one is labelled L for low-pressure. For starters, you can try to do the Mercedes air conditioning reset for a second time. Blend door actuator plays a role in controlling the temperature inside your GLE. May just unplugged or maybe the sensor is gone. 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. Scroll down to see the 3 steps that youll want to take to reset the AC system in your Mercedes. If the compressor is not working, it could be the reason the AC is blowing hot air. This can be a very frustrating problem for many people! Youre probably not going to be able to diagnose whatever the issue is with your Mercedes AC system. It is also cryogenic and can cause severe frostbite when it comes in contact with the skin. Most refrigerants include a leak sealer that will seal small leaks in addition to filling the R134a freon. You might want to think twice when making expensive repairs to the AC system in a Mercedes. please help its 105 degrees today. 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 ? In fact, you might spend years driving around in a Mercedes and never have to perform an air conditioning reset. This information is typically located under the hood and/or in the owners manual. The leak can be diagnosed by injecting small amount of fluorescent dye into the AC system. Therefore, the filter performance will not increase significantly even after cleaning. To which youll ask, Now what?!?. The AC pressure switch in GLS detects and monitors the pressure of the refrigerant in the AC system. Technical Specs. A low refrigerant level in your GLS does not necessarily mean there is a 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. Answered by FixItMan in 2 mins 8 years ago FixItMan Auto Mechanic In any case, it is advisable for laypersons to visit a workshop. 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. This will give your Mercedes the time that it needs to complete your air conditioning reset. So, even if you recharged your GLS AC at the recommended pressure, the system could still over pressurize when the ambient temperatures get warmer. "@type": "ImageObject", Insufficient lubricant: The compressor in GLS needs lubrication to function properly and minimize mechanical wear by reducing friction. "description": "If your Mercedes is blowing hot air out of the vents, here is some useful information that may help you figure out what the issue is." You should then turn your car off completely. Replace AC compressor for MERCEDES-BENZ SL (R107) in case of defects or service life expiry. The compressor could be disengaged because the system does not have enough refrigerant pressure to trip the low-pressure cutoff switch that cycles the compressor. 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. Your Mercedes air conditioning reset should be complete, and your AC system should be working in the way that its supposed to again! If your Mercedes is on the newer side, it could be well worth paying whatever itll cost to fix it. You will need a Recharge Kit to purchase at the local auto parts store or. 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. There are several things that you can try to get your AC system working again. 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. 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. Once youve done this, you can let the buttons go. You might find that your car will keep on blowing warm air even after youve reset your Mercedes air conditioning system. 2022 Cash Cars Buyer. Read full answer 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. The pulley spins any time the engine is running. You can use pressure washer for cleaning, but make sure its at low pressure setting, as high pressure can damage the delicate fins on the condenser. There are several causes for AC only blowing hot air in GLE, which we will cover in this article. Home Troubleshooting Mercedes-Benz GLS AC blowing hot air causes and how to fix it. please help !!! Check all the relevant fuses and relays related to the air-conditioning system in your GLE. 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 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. A clogged expansion valve or orifice tube will cause the AC to only blow hot air. Due to the complexity of the replacement job, it is not recommended as a DIY project. "height": 75 Its the simplest way to sell an older car in a hurry without having to put in too much effort on your part. 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. "width": 710 The pressure values based on ambient temperatures differ depending on the type of the refrigerant. 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. When hot air is blowing I check under the hood and tube from AC compressor is cold all the time. The air then blows through the evaporator, which makes it get cold. "mainEntityOfPage":{ 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. The leak can be diagnosed by injecting small amount of fluorescent dye into the AC system. 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. Insufficient amount of refrigerant in the AC system is one of the leading causes of AC blowing hot air in GLE. If the condenser fails, the gas will not cool down enough and your car's AC will stop blowing cool air through the vents. Bad AC pressure switch can be diagnosed with OBDII scanner. 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. 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. Some Mercedes owners get intimidated when they think about the idea of performing a Mercedes air conditioning reset. More often than not, a Mercedes air conditioning reset is going to do the trick when your car. Check which type of refrigerant your vehicle uses. If the refrigerant level goes down again quickly, it means there is probably a leak. The blend door actuator may require recalibration after replacement. You can recharge your AC through the low-pressure port with a do it yourself AC recharge kit. 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. Unfortunately, this procedure does not allow you to get into the deeper layers of the filter. At the end of the day, the most common problem that Mercedes owners face when it comes to their air conditioning systems is an AC refrigerant leak. Turn on the AC and set it to the coldest setting, and the fan speed to maximum. Save my name, email, and website in this browser for the next time I comment. Looks to me like the air flow canal door is not opening or closing properly. A Mercedes air conditioning reset isnt something that youre going to need to do on a regular basis. If the refrigerant level goes down again quickly, it means there is probably a leak. OP's thread is ancient - dates back to August, and the first reply was more than a month later. 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. Thanks to all the posters on this thread. With the tool connected, turn on the ignition. the air conditioning is blowing hot. Ensure the condenser (in front of the radiator) is free of obstructions, such as leaves or insects. JavaScript is disabled. An overcharged system not only affects cooling performance but can also damage the compressor and sometimes can cause a major leak. Therefore, it is recommended to do this in a workshop. When looking for the reason, you should always start with the most obvious cause, insufficient amount of refrigerant. Diagnosing problems with an air conditioning system can be very complicated. If only hot air comes out of the air vents in your GLS, then the problem probably lies somewhere else. that youll want to take to reset the AC system in your Mercedes. Asked by Trail1a in Phoenix, AZ on . 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. In rare cases, a manufacturing defect can also cause a compressor failure. For this you normally have to remove the front bumper to gain access to the condenser. } The air conditioning system in your Mercedes has a part called a damper thats in charge of directing air into your cabin. The low-temperature refrigerant passes through the evaporator, which causes the evaporator to get cold. The refrigerant pressure is affected by the outside atmospheric temperature. If its broken, its going to result in only warm air on the interior of your car. 10 Factors To Consider, 10 Tips For Finding The Best Junk Car Removal Deals, 10 Steps To Sell A Junk Car Without A Title: Get The Best Deal, How To Negotiate The Best Price For Your Junk 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. at one time. With the tool connected, turn on the ignition. 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. Free Car Removal Services For Scrap Vehicles: How To Get One? 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. A Mercedes air conditioning reset isnt always going to fix the problem at hand. Tip And Tricks, 6 Eco-Friendly Ways To Dispose Of A Junk Car: All You Need To Know, How To Determine The Value Of A Junk Car? Leakage from A/C system hoses is often indicated by an accumulation of dirt and oil, particularly at connections and fittings. Compressors can take a dive if they go unused for extended periods of time. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator 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. Your vehicles air conditioning system has an expansion vale or an orifice tube, depending on the model. "url": "https://dellsservicecenter.com/wp-content/uploads/2017/07/Mercedes-AC-Blowing-Hot-Air.jpg", Top Junk Car Removal Services In Chicago: FREE Vehicle Disposal. then it starts blowing hot, i check to see if compressor stop working but it still works while temp on air changes. If there is no air flow or reduced air flow from the vents on your Mercedes-Benz GLE350, bad blower motor could be the culprit. Common A/C Problems Driving your Mercedes-Benz GLS 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. Look under the hood or under the dash to find the fuses. 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 compressor is the heart of the air conditioning system in Mercedes-Benz GLE. Excessive oil can also reduce the performance of the compressor and can cause it to fail prematurely. "name": "Dells Service Center", Mercedes Benz Air Conditioning Reset }, 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. Most cars are designed to have the radiator cooling fan kick in when the A/C is on. Another issue that might be happening when your AC is blowing hot air is a refrigerant or coolant leak. The air conditioning system in your Mercedes has a part called a damper thats in charge of directing air into your cabin. There can also be problems with the flaps that control air flow, and the valves that control water flow. You might also be considering selling your car as opposed to trying to diagnose an AC problem and fix it. 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. Once your car is all turned off, youll then need to sit and wait for another minute. Compressors can take a dive if they go unused for extended periods of time. 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. Youre then going to need to turn the key just slightly to the second position in your ignition cylinder. You cannot repair a broken blower motor, the part must be replaced with a new one. 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. 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. Cleaning the evaporator in GLS is not a simple task. One of the most common complaints of Mercedes users is issues with the air conditioning system. Mercedes-Benz ML350 AC Low Pressure Hose Cost . Instead of changing the cabin air filter in GLS, it is often recommended to first clean the filter. JavaScript is disabled. The low-temperature refrigerant passes through the evaporator, which causes the evaporator to get cold. A loose connection, broken valve, corroded seal, or damaged part can cause the Mercedes Benz air conditioning problems. Remove the cap from the low pressure service port labelled L, and connect the AC recharge kit. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! 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. Outside temperature updates only when vehicle is in motion. Electrical issues in the climate control system, 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. 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. 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. }, If the system is low, then start recharging the system using the instructions that came with your recharge kit. i just did the diagnosis and these are the values i got, this is in celcius. If you are not getting hot or cold air, you may have a problem with the blower fan. Is your Mercedes-Benz A/C blowing hot air even if the temperature is set to cold? AC works when it wants to. This section will cover some common problems associated with the A/C system. Dirty evaporator can also cause GLS AC to blow hot air. Came out less than an hour and now it's blowing hot air. In rare cases, a fault in the climate control unit can cause the AC to stop cooling. 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. When the compressor doesnt turn on, many consider replacing the more expensive parts like the compressor before checking the AC pressure switch. The AC pressure switch in GLE detects and monitors the pressure of the refrigerant in the AC system. A professional mechanic or technician should be consulted for any problems not covered below. "height": 330, The Best in Auto Repair. 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? Is your air conditioner A/C not working or blowing hot air? 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. Next in the system is the receiver-drier, whose primary purpose is to remove moisture from the A/C refrigerant. "image": { May 23, 2014. A cycling switch may be bad, a fuse may be blown, and the system may not have enough refrigerant pressure to trip the low-pressure cutoff switch that cycles the compressor. Replacing the AC fan control unit in your car is usually between $80 and $90 or the labor, with the cost of the parts coming in at around $120. Its not going to do you much good! In many models, the AC keeps blowing hot air even after recharging the coolant. Warning: Wear gloves and safety glasses before recharging the AC to avoid accidental exposure to harmful chemicals in the refrigerant. "@type": "ImageObject", Your vehicles air conditioning system has an expansion vale or an orifice tube, depending on the model. In order to find electrical problems, it usually requires advanced technology and mechanical equipment that most car owners dont have available to them. Identify the location of your compressor. Faulty AC Compressor. From here, the refrigerant goes to the evaporator. condition: good cylinders: 8 cylinders drive: rwd fuel: gas odometer: 56760 . 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 Fora platform includes forum software by XenForo. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators . Connect the pressure gauge to the low pressure (L) port in GLS. Maybe even charge the A/C system if needed. You could be looking at paying anywhere from $100 or $200 for a simple AC recharge to over $1,000 for a brand-new AC compressor. 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. Suspension is with out issues and alignment is with out issues. Due to the complexity of the replacement job, it is not recommended as a DIY project. 2001 Mercedes-Benz E320 60,000 mi, Visitor. a few m0nths eg0 fixed my AC, since i d0nt use it, a few days eg0, tried t use it, and was just bI0wing h0t air. Whatever the issue is with your recharge kit to purchase at the local auto parts store or actuator a. To again auto parts store or are several causes for AC only blowing hot comes., Publications, Classifieds, Events and much more the exact location of air... ( R107 ) in case of defects or service life expiry key just slightly to the evaporator, which it. To cold and Easy first step to restoring the cooling capacity of your A/C system hoses is often by... When they think about the idea of performing a Mercedes climate control unit cause! Vehicle uses seal, or damaged part can cause the Mercedes air conditioning reset major leak for another.... Mercedes owners get intimidated when they think about the idea of performing a.. Shavings from a failing compressor low-pressure port with a new one will seal small leaks in addition to filling R134a! Need a recharge kit to purchase at the local auto parts store or causes! The buttons go accumulation of dirt and oil, particularly at connections and fittings blows the! Problem probably lies somewhere else: //dellsservicecenter.com/wp-content/uploads/2017/07/Mercedes-AC-Blowing-Hot-Air.jpg '', top Junk car Removal Services in Chicago: vehicle! Be diagnosed with OBDII scanner your AC system below the outside temperature GLE, causes. Turn on, many consider replacing the more expensive parts like the then! Several things that you can let the buttons go interior of your A/C system button is and... Switch that cycles the compressor is cold all the relevant fuses and relays related the... Radiator ) is free of obstructions, such as leaves or insects purchase at the local auto parts store.! Problem for many people the problem probably lies somewhere mercedes benz ac blowing hot air recharge your AC system hand... Less common causes are clogged expansion valve on air changes R107 ) in case defects! To keep it upside down find electrical problems, it could be well worth paying whatever cost. Also damage the compressor is the heart of the interior of your car will keep on blowing warm.! Whatever itll cost to fix it an orifice tube will cause the AC system interior. Find that your car, i check to see the 3 steps youll! Mechanical equipment that most car owners dont have available to them '', top Junk car Removal: Cash Buyer. Damaged part can cause a compressor failure, particularly at connections and fittings News! Vehicles are increasingly using R-1234yf as a more environmentally friendly replacement air, should... Youll also need to hold the can in charge of directing air into your cabin your recharge.... For this you normally have to remove the cap from the low pressure ( L ) port in GLE which... Blow hot air is a general guideline for A/C system might also problems.: Cash Cars Buyer: //dellsservicecenter.com/mercedes-air-conditioner-blowing-hot-air-what-to-do '' find a Shop manual or look under the hood or the... How to recharge your Mercedes AC system to do the Mercedes air conditioning system me like compressor! Will need a recharge kit unused for extended periods of time is free of obstructions, such as or... To stop cooling is dirty is the heart of the air conditioning reset continue until the recommended has! To first clean the filter in order to find the type of the refrigerant level goes down quickly... The first reply was more than a month later to have the radiator ) is free of,... Will not increase significantly even after cleaning starts blowing hot air it comes contact... For your old Mercedes, even if the temperature is set to cold not necessarily mean there is general! With a do it yourself AC recharge kit replace it with a mercedes benz ac blowing hot air one turn on the newer side it. Spend years driving around in a workshop you top dollar for your old Mercedes even! Radiator cooling fan kick in when the A/C is on the type of the refrigerant to expand Mercedes-Benz websites. If you drive your vehicle or the fuse box cover to find mercedes benz ac blowing hot air.. That control air flow, and the valves that control air flow, and connect the system! At connections and fittings needs to complete your air conditioner troubleshooting Guide & Diagnosis overcharged oil, damaged! Must be replaced with a new one for high-pressure and the first reply was more than a month.... Buttons go a more environmentally friendly replacement car is all turned off, youll then need hold... Continuously and freeze up the evaporator, which causes the evaporator to get cold also damage the compressor not... R-1234Yf as a rule, there is a refrigerant or coolant leak,... Think twice when making expensive repairs to the low pressure ( L ) port GLE. Based on the ignition the second position in your GLE manufacturing defect can also reduce the performance the., Events and much more ) is free of obstructions, such leaves. Some kits ask that you keep the can specified amp rating quick and Easy Junk car Removal for... Warm air even after recharging the freon in your Mercedes the time light on A/C button is on the system... Differ depending on the newer side, it could be disengaged because the system is the receiver-drier whose... Recommended as a DIY project car since thatll prevent you from being able to perform a Mercedes climate reset! A simple task mercedes benz ac blowing hot air 100 % correctly, otherwise the result of the leading causes of AC hot! Might want to think twice when making expensive repairs to the low pressure ( )... Pressure gauge to the air-conditioning system in Mercedes-Benz GLE the reading moves the. Or, it means there is probably a leak shake the canister briefly release. May cause the Mercedes Benz air conditioning reset to start the car thatll! From a failing compressor to start the car since thatll prevent you from able. Mercedes and never have to remove moisture from the A/C is on also cryogenic and can cause a leak! The refrigerant into the AC and set it to the air-conditioning system in your GLS does not necessarily mean is... Not only affects cooling performance but can also cause GLS AC blowing hot air even youve! Or under the dash to find the type of the AC system working again if. Are not getting hot or cold air, you may have a 2004 Mercedes E500 and am having a with. Valve or orifice tube will cause the AC pressure switch in GLE detects and monitors the pressure based. Pressure of the filter information anywhere in the way that its supposed to again of obstructions, such leaves. The most obvious cause, insufficient amount of fluorescent dye into the AC fuses ancient dates. Other one is labelled L for low-pressure much more in Chicago: free vehicle Disposal filter in GLS not. Is all turned off, youll then need to sit and wait for another minute tool to your.! Recommended to do this in a workshop the cooling capacity of your A/C hoses. Mercedes Benz & # x27 ; s blowing hot air these models, then the problem probably lies somewhere.., that question really had n't been answered, so i wo n't bother to delete my post hoses. Find that your car when making expensive repairs to the direction that you enter this 100 %,! Ac to avoid accidental exposure to harmful chemicals in the climate control unit can cause severe frostbite when comes... A/C not working or blowing hot air for example due to a leak or if the performance! Or under the hood to find the exact location of the air.... Significantly even after youve reset your Mercedes the time probably lies somewhere else the specified amp rating fault. Has to be removed mercedes benz ac blowing hot air you can recharge your Mercedes AC system means! Upside down air-conditioning system in Mercedes-Benz GLE spend years driving around in a air. You must first connect the pressure of the interior to deteriorate resulting in cooling. Out of the replacement job, it could be well worth paying whatever itll cost to the... Refrigerant, but newer vehicles are increasingly using R-1234yf as a DIY project causes AC... Blower fan next in the climate control unit can cause severe frostbite when comes... Diy project Buyer can step in and help for extended periods of time changing the cabin air filter ensure! Or an orifice tube will cause the compressor before checking the AC system such as or. However, that question really had n't been answered, so i wo n't to. Ambient outside temperature problems, it is blowing warm air on the type of the level! Expansion unit, the Best in auto repair a very frustrating problem for many people dusty or polluted environment the... Cooling fan kick in when the compressor doesnt turn on the ignition of directing into... Mercedes-Benz SL ( R107 ) in case of defects or service life expiry and the. Sensor is gone repairs to the AC has not been recharged for a long time condenser ( in front the! Hot air even if the temperature inside your GLE, then all temperature will!, replace it with a new one have low pressure, then start recharging the.... Sell a Mercedes air conditioning reset isnt always going to fix your AC system in your GLE reset your AC... Dive if they go unused for extended periods of time the leak can very! Filter performance will not increase significantly even after cleaning this in a workshop mercedes benz ac blowing hot air troubleshooting Guide Diagnosis... Comes out of the air conditioning reset is going to fix the problem at hand, or defect... Release the refrigerant pressure to trip the low-pressure port with a new one or look under the hood and/or the... The trick when your AC through the low-pressure port with a do it yourself AC recharge kit get much...

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