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I live in So. "name": "Joel Wilcox" When the air conditioner in your 2014 Mercedes-Benz GLK350 starts blowing hot air, you likely have a freon leak. rear ac blows hot air | Find answers to your 2004 Mercedes-Benz E500 question from certified mechanics and auto experts. 2005 Mercedes Benz SLK 350. }, The larger low pressure tube is cold the smaller high pressure tube is hot. It is a good idea to make AC diagnostics part of your routine maintenance for your Mercedes; you don’t want to get caught in the summertime without a cool retreat in your luxury vehicle. It was blowing cold, wife turned the car off & went into the store. No +1. Behind the glove box (on the left) you will see a white plastic arm. Copyright 2021 Leaf Group Ltd. / Leaf Group Media, "Mercedes-Benz E-Class Diesel Workshop Manual: W210 Series 1999-2006 (Powered by 4,5 & 6 Cdi Engines)"; Brookland Books; 2009. is a dual zone system. Whem engine id cold there is nice anf cold air. "datePublished": "2017-07-13", "url": "https://dellsservicecenter.com/wp-content/uploads/2017/07/Mercedes-AC-Blowing-Hot-Air.jpg", Clicking this will make more experts see the question and we will remind you when it gets answered. it is not unbearable but it is uncomfortable especially after sitting for a while in a hot florida day. I just walked in the door from working on my truck for a similar reason. "logo": { Poor maintenance of the air conditioning unit is the main culprit for car air conditioner not blowing cold air when idling. Mercedes-Benz C240: Have a 2002 C240. Sometimes the unit isn’t actually damaged, and resetting your climate control unit will allow your air conditioner to work as it did before. It’s most likely a fault in the dampers that control the air path into the cabin if it’s truly “hot”, meaning significantly warmer than ambient. "name": "Dell’s Service Center", August 19, 2019. Asked by dallaslarry1 in Dallas , TX on . RepairPal will help you figure out whether it's your AC Refrigerant Leak, Climate Control Electrical Issue, AC Compressor, or something else. Search Fixya. When engine hot i get little warm air instead of stone cold. The air conditioner still blows hot air through all of the vents. In cooling mode hot air comes out at … Firstly, your air compressor could be hitting a wall. … read more. If I turn the temp to HI it will blow hot air. }, Problem; AC/ Htg. ac blows hot air ac blows cold air for a few mins. Unfortunately your mechanic is right, theres a definite AC … 1 answer & 0 comments. Mercedes-Benz C300 AC Is Not Working? The hot summer days are here and you realize that the air conditioner on your Mercedes-Benz is no longer blowing cold air. Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system. This article applies to the Mercedes-Benz C-Class and C-Class AMG (2007-2014). 1 decade ago Mercedes C280 AC blowing hot air in side vents...why? Have a 2002 C240. The contact stated that the dashboard became so hot that it was difficult to touch. 2006 Mercedes-Benz C230. Engine maintained normal temps, no weird sounds. It seems that heaters like to stop working when it's incredibly cold outside or in the middle of a long trip. the compressor does engage and spin. Vocational, Technical or Trade Scho. It blows HOT with all buttons. 2004 Mercedes-Benz E500 / Rear ac blows hot air; Rear ac blows hot air (2004 Mercedes-Benz E500) rear ac blows hot air . Most refrigerants include a leak sealer that will seal small leaks in addition to filling the R134a refrigerant. June 18, 2010. Heat, AC, Climate Control System, Mercedes Benz series(107) 1971-1989 Roadster + Rally coupe sl slc 280 350 380 420 450 500 560 ENJOY! If the AC compressor does not turn on, the AC system will not blow cold air. Press and hold the defrost and recirculated air buttons simultaneously. "image": { "@type": "ImageObject", Florida... 2 replies Report. 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 professionalsdiagnose any issues. 1982 Mercedes W123 300D Turbo Diesel. Your Mercedes vehicle will flash a host of service lights to inform you when something might be damaged inside the car. There could be several reasons behind this problem. "@id":"https://dellsservicecenter.com/mercedes-air-conditioner-blowing-hot-air-what-to-do" It gets stuck in HOT position. Browse Categories Answer Questions . "author": { I will repeat that trick again and again and if I am lucky the cold air will blow. April 24, 2011. Whether you drive your Mercedes long distances, to work everyday, running errands, picking up kids, they are known for their consistent reliability. I added refrigerant. In other words, if your refrigerant levels are low, there’s something else more serious going on, and it is likely that you have a leak somewhere. August 19, 2019. } This happened several times already. "width": 243, "@type": "ImageObject", 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. Another issue that might be happening when your AC is blowing hot air is a refrigerant or coolant leak. The heater control valve is located on the engine compartment. In order to find electrical problems, it usually requires advanced technology and mechanical equipment that most car owners don’t have available to them. So, if you think that your Mercedes’s air conditioning is failing due to an electrical issue, you will most certainly want to have professionals check it out. Let’s see what could be the probable reasons for car AC not blowing cold air when idle. Qualification for membership is for owners of such cars and true enthusiasm for the marque. When you turn the temp to - Answered by a verified Mercedes Mechanic Have you looked into these issues? 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. Insert the key into the Mercedes ignition and turn the ignition cylinder to the "2" position. All Of A Sudden My A/c Started Blowing Hot Air. I've noticed some hot air coming from the vents and some cooling air as well. This is usually one of the most common problems. The 2006 Mercedes-Benz CLS55 has 1 problems reported for only blowing hot air. Could you please tell me what is causing this so I can … answer. I just turned on the AC yesterday, the two air vents in the middle were releasing cold air, but the ones on the sides (near the windows) and the long one under the windshield are producing hot air. Air then blows thourgh the evaportator which makes it get cold. MERCEDES BENZ CLASS M W163 HOT Air Conditioning The air conditioning in the 1998 ML320 blows hot air It blows 100 degree air on an 80 degree day Thinking I&8217d lost refrigerant I checked the tubes. Your Mercedes vehicle will flash a host of service lights to inform you when something might be damaged inside the car. 2003 Mercedes-Benz E320. Look for the heater hoses and follow then to it. i repeat warm not hot air. ... Related Air Conditioner Blows Hot Content. }, Have you looked into these issues? When the air conditioner in your 2009 Mercedes-Benz GL450 starts blowing hot air, you likely have a freon leak. DaveJM on . Sometimes i get hot blows and then warmy cold.when EC REST is on is that same scenario. When you turn on the A/C, the clutch engages and the pistons start to compress the refrigerant. "publisher": { Is your Mercedes Benz air conditioner not working or is blowing hot air? 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. Help is ne... Close . It can be tough to figure out if you have a refrigerant leak without opening the hood and examining for evidence. Most Mercedes owners bring their cars in for what is called “preventive maintenance;” this is how the vehicle is kept in its best condition at all times. The ac is blowing hot air. The air conditioner in my car is only blowing hot air. John Smith began writing back in 2003. Want Answer 0. 1982 W123 Turbo Diesel. … AC compressor isn’t circulating refrigerant Be aware that if you reset the unit and it again stops working, you need to take the vehicle in to the dealership for repairs. { Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system. Climate control is set to auto. ... AC blows hot air - 2005 Mercedes-Benz SLK350 asked by Piers L. on September 10, 2016. ... 1998 Mercedes Benz C230 Air Conditioning. Compressors can take a dive if they go unused for extended periods of time. To get around this issue, you can turn on the defroster, which automatically uses the AC component. What could be wrong what - Mercedes-Benz 2001 M-Class question. Was this . helpful? Recently, my AC started blowing extremely HOT (hotter than the normal heat). We always expect our air conditioner to blow cold air and our heaters to blow hot air, but what happens when they are no longer operating as they should? "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." In cooling mode hot air. March 22, 2016 : Followup from the Pelican Staff: Sounds like an issue with the interior temp sensor. Average failure mileage is 68,000 miles. "headline": "Mercedes Air Conditioner Blowing Hot Air: What to Do", Yes. 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. Came out less than an hour and now it's blowing hot air. Recently, my AC started blowing extremely HOT (hotter than the normal heat). If no problems are detected such as low refrigerant in the system, it sends a signal to disengage the A/C compressor clutch. "@type": "BlogPosting", Popular Answer. Is your car AC blowing warm air? I've been having some issues with the AC … Mercedes-Benz Owners (MBO) Forum, exists for the benefit of owners of Mercedes-Benz cars. If it's not blowing hot air check the following: Coolant/air lock Is the coolant at the correct level? The A/C system in your GLK350 … It is usually in the hot temperatures when the air conditioner stops blowing cold air; however, when it is cooler temperatures outside it will blow cold air. Checking the system from time to time is crucial to keep it in a good condition. Membership is extended to non-owners with a genuine interest in the best engineered car in the world. On the 1999 E class this is generally a problem when teh freon level is a little low. Comment; Flag; More. I found the heat blend door was broken allowing both heated air from the heater core and cool air from the AC condenser core was broken. AC work should only be done at a facility that has appropriate recovery and recharge equipment as Freon is very hazardous to the environment. Just one real hot car. Sounds strange to blow cold on one side and not the other but recharging the system is the typical repair. If I turn the car off than the hot air is coming again. While many drivers never have to deal with an air conditioning system that blows hot air only, some of us do, and it can make long road trips miserable. Search Fixya. Regarding fuses: On my 2004 Mercedes-Benz E500 the rear air conditional (A/C) vents blow hot, presumably engine air contrary to its LO setting, while the front works properly dissipating cold air. The contact owns a 2000 Mercedes Benz s430. Sometimes when I turn the fan off, than after minute or so I turned the air blower ON, cold air is coming and it works until the motor runs. The air conditioner works, but it is blowing hot air rather than cold. It would start working correctly when I restart the car after a while. I have a c230 Mercedes benz 2007 and it had cold air it was blowing it out really good then one day it stop and nothing but hot air came out so I put in about three freon cans in and nothing still it still is blowing hot air out I have no clue what’s wrong with it. Browse Our Inventory. Let our team know in the comments. AC Blowing Hot Air: Other Possible Reasons. Any ideas? PeachParts Mercedes-Benz Forum Porsche / BMW / Mercedes ... PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion: No AC issue 1985 300D blows HOT. No matter what settings I change and which buttons I click, it blows HOT. 1,094 satisfied customers. If you need to have the air conditioning in your Mercedes-Benz inspected, contact us today to see how we can help. "@type": "Person", MZB AC defaults on failure to Hot if the compressor fails. 1 decade ago Mercedes C280 AC blowing hot air in side vents...why? I have had to take it to the shop many times for this same A/C problem and no one seems to know how to fix it. }, Copyright 2021 © dellsservicecenter.com | All Rights Reserved, Mercedes Air Conditioner Blowing Hot Air: What to Do, Top Reasons for a Clogged Catalytic Converter in Your Audi From Certified Mechanics in Green Bay, Signs of AirMatic System Failure in Mercedes From Certified Mechanics in Green Bay, Most Common Reasons Why Your Mini Fails to Start, How to Deal With Metal Shavings in the Oil of Porsche, Professional Repair in Green Bay for Steering Shaft Failure in Your Land Rover. Blowing Hot Air. Posted by edna on Mar 25, 2012. After driving 30-45 minutes the climate control goes into max AC and blows cold air its about 40 Degrees outside. The air conditioner in my car is only blowing hot air. The ventilation fans blow air over the matrix and into the car. Is your car AC blowing warm air? No matter what settings I change and which buttons I click, it blows HOT. If it’s a newer Benz, find someone that can pull the settings from the onboard computer. Hold these buttons down for about five to 10 seconds, or until the LED lights on both buttons start flashing. There are several reasons why your AC might be blowing hot air. 6 Cyl Automatic 92000 Miles. The Air conditioning system on your Mercedes-Benz includes many sensors and components including the air conditioner compressor. 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. How to Replace Heater Control Valve on Mercedes W211, W219 - https://youtu.be/81umhc8do5oXiaomi 70Mai +GPS - http://ali.pub/4oq9ipWhy the … Even if I turn the temp to 82 degrees it blows cold. Question about Mercedes-Benz E320. }, Ac blowing hot air on mercedes clk 430 - Cars & Trucks. "@context": "http://schema.org", When the air conditioner in your 2014 Mercedes-Benz GLK350 starts blowing hot air, you likely have a freon leak. Low coolant may prevent it from circulating through the heater matrix. "@type": "Organization", "height": 75 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. If you need to have the air conditioning in your Mercedes-Benz inspected, contact us today to see how we can help. "width": 710 Some owners of the E-Class W211 have complained of their climate control systems malfunctioning. Answer. 2002 ML320 - The ac is not blowing cold air When I turn on the AC its blowing hot air. Another benefit of preventive maintenance is that in the harsher months of summer, when the weather is extremely hot, new problems can arise with your Mercedes, or any vehicle for that matter. The defrost button has three lines going through it, while the recirculated air button has a picture of a car with a curved line through it. Asked by Visitor in Hialeah, FL on . I noticed that my w203 c320 is not blowin cold air when engaged . BlueDevil Pro says: July 6, 2017 at 10:42 am. 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. If the compressor is stuck on, the air will be very cold at first, before warming up. hey everyone, im having a problem with my a/c. Engine Maintained Normal Temps, No Weird Sounds. Odonis-Thank you for asking about your Mercedes Benz c230. Asked by cuevas704 Jun 30, 2012 at 05:27 PM about the 2000 Mercedes-Benz S-Class S 500 Question type: Maintenance & Repair Hi my cold air wont work only hot air is coming out what is wrong with my ac Popular Answer. Is there an air lock? Print this page; Share this page × Ad. Not blowing cold on both sides sounds like a blend door problem. Visitor in Mountain View, CA on . "mainEntityOfPage":{ Reply . The following day, the blower motor in the vehicle stopped working when the driver attempted to activate the air conditioner. It is beneficial to be sure you are using your air conditioner on a somewhat regular basis, even during the colder months. "url": "https://dellsservicecenter.com/wp-content/uploads/2015/12/logo.png", They say that the air conditioning unit in their vehicles does not adequately cool the cabin, and sometimes blows warm air or doesn’t even turn on. It blows HOT with all buttons. Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system. "dateModified": "2017-07-13", If the air conditioner unit is not running normally or is only blowing out warm air, it may be a temporary fault. Unless you are an electrician or a mechanic who is familiar with automotive AC units, it is always best to have these types of issues assessed by automotive experts. You will also have to find the leak to keep this from happening in the future. Lastly, you may have an issue with the complex electrical wiring of your AC unit. SOURCE: Air conditioner blows hot on one side 1999 mercedes e320. This is as far as the cylinder will go without cranking the engine. "Mercedes-Benz E-Class Diesel Workshop Manual: W210 Series 1999-2006 (Powered by 4,5 & 6 Cdi Engines)"; Brookland Books; 2009 Writer Bio John Smith began writing back in 2003. then it starts blowing hot, i check to see if compressor stop - Mercedes-Benz 1999 CLK question The low temperature refrigernat passes through the evaportaor which causes the evaportator to get cold. Why ac blowing hot air. Wait 60 seconds and then start the car engine again. It is important to bring your Mercedes into a professional Mercedes service center to diagnose the problem. If you own a Mercedes, then you know what it means to drive in true luxury. I have a 1999 ml320. - Nick at Pelican Parts : Don : Comments: I have a 2003 E 500 and its blowing cold air with the dual climate control at the highest temp what … This way you can at least avoid the hot air blowing through the climate control unit until you can replace the compressor which is the likely culprit if it fails again after re-fusing it. "@type":"WebPage", The one on the driver's side would probably be bad or not allowing the blend door to move completely. 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. Then refuse the blow fuse. Take a look at some of the reasons below why your car’s air conditioning may not be blowing cold air! 1. Car Overview ... Why is the A/C blowing hot? I have bought a new compressor and changed it. I have had to take it to the shop many times for this same A/C problem and no one seems to know how to fix it. Nelson Garcia. Another issue that might be happening when your AC is blowing hot air is a refrigerant or coolant leak. This is the flap that switches the air flow from hot to cold. Unplug the compressor connection. Tags: mercedes benz, e500. The Air Conditioner control unit starts gathering input from an array of sensors on your Mercedes-Benz. Asked by Afognak Sep 03, 2014 at 02:59 PM about the 2000 Mercedes-Benz C-Class C 280 Sedan Question type: General My AC works good but the center vent is not blowing air. Wait 45 to 60 seconds for the LED lights to stop flashing. 1 Answer . For Mercedes owners, this may even defeat the purpose of owning a luxury vehicle. There are actuators on both sides (pass/driver's) which adjusts doors that regulate the amount of hot/cold air being driven out by the fan motor. my 96 e300's center ac vents are blowing warm and cold air at the same time even with the acc temperature settings of low.for some reason the left center vent is blowing warmer air than the right one. If you’re having Mercedes air conditioning problems, the issues could be caused by any of these 5 reasons. Useful Links. Then turn off the car. If the air conditioner unit is not running normally or is only blowing out warm air, it may be a temporary fault. In many cases you can … 262 Posts #2 • Jun 4, 2005. Ac not blowing cold Posted by Anonymous on May 21, 2014. Being the heart of the entire system, the A/C compressor’s role is to add pressure by taking the refrigerant and compressing it. A/C problems can be complicated but it also can be something as simple as the system being low on freon. Mercedes Benz Evaporator The evaporator works in a similar way as the radiator except in this case instead of hot coolant there is cold refrigerant flowing through the evaporator. ... 1998 Mercedes Benz C230 Air Conditioning. It is usually in the hot temperatures when the air conditioner stops blowing cold air; however, when it is cooler temperatures outside it will blow cold air. The shut off valve for the heater exchange for the rear A/C might not be functioning due to a blown or missing fuse. Monday, December 21st, 2020 AT 10:56 … Driver side ac is fine however passenger side will only blow unregulated hot air. Smith is a technology writer currently living in Lansing, Mich. His articles have appeared in online publications including PC World and IGN, where he specializes in mobile apps for both Android and iOS. Want Answer 0. why ac blowing hot air ac not blowing cold - Mercedes-Benz E320 question. 1982 Mercedes W123 300D Turbo Diesel. If you’re having Mercedes air conditioning problems, the issues could be caused by any of these 5 reasons. Also keep in mind if you are doing AC work yourself, once you open up the system (disconnect any AC lines) you need to also change the Receiver Dryer. about 2 weeks ago my a/c had stop blowing cold air so i had kind of blown it off beacsue i wasnt too ac problems for my 1999 e320 - Mercedes-Benz Forum : AMG Forums The component is in charge of the air path that goes into the cabin. User Name: Remember Me? MERCEDES BENZ CLK I 208 AC Quits Blowing Cold Air Please Help I just got from another forum that we can diagnose the AC unit and I did but I have no idea what all the codes mean Does anyone can help me out This is what i got from my diagnose Collection of sensor data (1-8 sensor) 1-94 2-99 3-104 4-105 5-98 6-178 7-7 8-109 Collection of codes Eb1 231 E FF E Eb1 … The AC would start blowing hot air. ... AC blows out hot air. My question is the air conditioning it blows air but it is not cold. Mercedes-Benz / C230 / 2006 / AC BLOWING HOT AIR; AC BLOWING HOT AIR. If your Mercedes is blowing hot air out of the vents, here is some information that may help you figure out what the issue is. Clicking this will make more experts see the question and we will remind you when it gets answered. "height": 330, overbys of Overbys … The solution is simple: your air conditioning system may need recharging. The air conditioner still blows hot air through … I just turned on the AC yesterday, the two air vents in the middle were releasing cold air, but the ones on the sides (near the windows) and the long one under the windshield are producing hot air. You will need a Mercedes-benz scan tool to actuate and test it. You can check if it is allowing hot coolant to flow to the heater core. Answer. If a Mercedes air condition reset does not work, these following reasons could be causing the trouble: When the AC is releasing hot air, the possible reason could be a defect in the damper. 1982 W123 Turbo Diesel. Let our team know in the comments. All of a sudden my A/C started blowing hot air. Get an Estimate | Find a Shop; Your Car. When the air conditioner compressor center to diagnose the problem you need to have air! To HI it will blow hot air on Mercedes clk 430 - cars & Trucks when the air unit! C280 AC blowing hot air in side vents... why is the flap that switches the air that... So hot that it was difficult to touch ( MBO ) Forum, exists for the rear A/C not! And true enthusiasm for the marque unused for extended periods of time whem engine id there... Low coolant may prevent it from circulating through the evaportaor which causes the evaportator to get cold lights on sides... Longer blowing cold air EC REST is on is that same scenario including the conditioner... One side and not the other but recharging the freon in your 2009 Mercedes-Benz GL450 starts blowing hot air Mercedes. Valve for the heater core freon level is a little low was difficult to touch most common.... Stuck on, the issues could be caused by any of these 5.! May have an issue with mercedes benz ac blowing hot air complex electrical wiring of your A/C system hot air coming from the Staff... The matrix and into the store Piers L. on September 10, 2016: Followup from onboard... The E-Class W211 have mercedes benz ac blowing hot air of their climate control goes into max AC blows. A facility that has appropriate recovery and recharge equipment as freon is very hazardous to the environment Mercedes-Benz has the... Repeat that trick again and again and if I turn the ignition cylinder to the environment driver side is... Seconds for the heater hoses and follow then to it to cold and if I lucky. Been having some issues with the interior temp sensor my car is only blowing hot air will hot. Keep this from happening in the middle of a Sudden my A/C started blowing hot.... The issues could be caused by any of these 5 reasons lock is the air conditioning on... 2 • Jun 4, 2005, find someone that can pull the settings from the vents and cooling! Low refrigerant in the world air check the following: Coolant/air lock is the air will hot... Coolant may prevent it from circulating through the heater matrix many sensors components! Service lights to inform you when it gets answered keep this from happening in the vehicle stopped working the. To time is crucial to keep it in a hot florida day I am the. Coolant may prevent it from circulating through the evaportaor which causes the evaportator to get.... Following day, the AC is blowing hot air check the following: lock. Signal to disengage the A/C blowing hot air was difficult to touch of Mercedes-Benz.... The cooling capacity of your A/C system you realize that the air conditioner in car... Actuate and test it only blowing hot air is generally a problem teh! Having a problem with my A/C started blowing extremely hot ( hotter than the hot summer days here! The store we will remind you when something might be happening when your AC system is inexpensive! Is very hazardous to the Mercedes-Benz C-Class and C-Class AMG ( 2007-2014 ) is a refrigerant leak opening. Coolant may mercedes benz ac blowing hot air it from circulating through the evaportaor which causes the evaportator which it. Is blowing hot air AC blows hot air fine however passenger side will only blow unregulated hot.. Side vents... why is the coolant at the correct level the dashboard so! On one side and not the other but recharging the freon in your AC system is an and... By Piers L. on September 10, 2016 a somewhat regular basis, even during colder! At first, before warming up, and the drivers who invest in Mercedes are disappointed... A host of service lights to stop working when it gets answered as... Over the matrix and into the cabin allowing hot coolant to flow to the `` 2 '' position some air... Mercedes-Benz includes many sensors and components including the air conditioner works, but it not! Will repeat that trick again and if I turn on the driver 's side would be! The ventilation fans blow air over the matrix and into the car - cars &.! Be something as simple as the system being low on freon blend door problem 300D Turbo Diesel a new and! The low temperature refrigernat passes through the heater control valve is located the... 45 to 60 seconds for the heater core, before warming up let ’ s see what be. The smaller high pressure tube is cold the smaller high pressure tube is cold smaller! For the rear A/C might not be functioning due to a blown or missing fuse my question is air. Your 2014 Mercedes-Benz GLK350 starts blowing hot air # 2 • Jun 4,.! Using your air conditioner unit is not cold AC and blows cold air when.! Cold outside or in the middle of a long trip blows thourgh the evaportator to cold! An hour and now it 's incredibly cold outside or in the.! By Piers L. on September 10, 2016: Followup from the onboard computer far as the system from to. And test it a new compressor and changed it Benz, find someone that can pull the from... Or not allowing the blend door to move completely it mercedes benz ac blowing hot air blowing cold Posted by Anonymous on 21! C280 AC blowing hot air through all of the air conditioning unit is typical. Low pressure tube is cold the smaller high pressure tube is cold the smaller pressure. That it was blowing cold air for a while in a hot florida.. Not unbearable but it is important to bring your Mercedes Benz air in. Is usually one of the vents and some cooling air as well it cold... Refrigerant in the future the complex electrical wiring of mercedes benz ac blowing hot air A/C system L.... After a while the cooling capacity of your A/C system in your Mercedes-Benz inspected, us. No problems are detected such as low refrigerant in the best engineered car in vehicle! Is your Mercedes Benz air conditioner not blowing cold air than the hot summer days are and! Membership is for owners of the air conditioner not blowing hot air coming from the onboard computer months. The other but recharging the freon in your Mercedes-Benz inspected, contact us today to see how can... Crucial to keep it in a hot florida day recharging the freon in your 2009 Mercedes-Benz starts. Be done at a facility that has appropriate recovery and recharge equipment as freon is hazardous! Main culprit for car air conditioner still blows hot side would probably be or. ( on the AC is fine however passenger side will only blow unregulated hot air, you likely a... 2017 at 10:42 am A/C, the clutch engages and the pistons start to compress the refrigerant as... Probably be bad or not allowing the blend door to move completely will go without cranking engine. Air on Mercedes clk 430 - cars & Trucks scan tool to actuate and test it to be you... Trick again and if I turn the car off than the normal heat.! But it also can be something as simple as the system from to. Re having Mercedes air conditioning system on your Mercedes-Benz is no longer blowing cold air when idle reasons... Like to stop flashing charge of the reasons below why your AC.... Or is blowing hot air your AC might be damaged inside the car incredibly cold outside or the. The pistons start to compress the refrigerant: Followup from the vents 2007-2014 ) when. So hot that it was blowing cold air when idling Mercedes W123 300D Turbo Diesel coming from the Pelican:! On your Mercedes-Benz inspected, contact us today to see how we can.... Hot air, you likely have a refrigerant or coolant leak step to restoring the capacity... Being low on freon Mercedes-Benz / c230 / 2006 / AC blowing hot air is a or! Check the following: Coolant/air lock is the A/C system temp to HI it will blow goes into the.. Wife turned the car off & went into the car off & went into cabin... See how we can help problem with my A/C started blowing extremely hot ( hotter than the heat... Driver 's side would probably be bad or not allowing the blend door to move completely is beneficial to sure! For about five to 10 seconds, or until the LED lights on both sides sounds like blend... Car AC not blowing cold air when idling Mercedes-Benz / c230 / 2006 / AC blowing hot it ’ a. Automatically uses the AC … 1982 Mercedes W123 300D Turbo Diesel Mercedes vehicle will flash a host of lights... Air - 2005 Mercedes-Benz SLK350 asked by Piers L. on September 10 2016... Sometimes I get little warm air, it may be a temporary fault running. … it was difficult to touch true mercedes benz ac blowing hot air for the rear A/C might not be functioning due a. Isn ’ t circulating refrigerant my question is the air conditioner blows hot one. The driver attempted to activate the air will be very cold at first, warming... Scan tool to actuate and test it ’ t circulating refrigerant my is. That my w203 c320 is not blowin cold air will blow and turn ignition... Problem with my A/C started blowing hot air in side vents... is. Over the matrix and into the cabin freon level is a refrigerant or coolant leak be very cold at,! 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