If your Mercedes-Benz air conditioning isn’t blowing cold air, there may be a simple fix. All you need to do is reset the system.
Here’s how to do it:
1. Turn the ignition on.
2. Press and hold the “defrost” and “recirculate” buttons for at least five seconds.
3. Turn the ignition off.
4. Wait a few minutes, then turn the ignition back on.
5. Press the “AUTO” button on the climate control panel.
Suppose your air conditioning still isn’t working properly after following these steps. In that case, you may need to take it to a Mercedes-Benz dealer or qualified technician for further diagnosis and repair.
In this article: Resetting procedures also work with the following list of Mercedes air conditioners:
- Mercedes E350 AC problems
- 1999 Mercedes E320 AC reset
- 2000 Mercedes E320
- 2001 Mercedes E320 AC reset
- Mercedes GL450 AC reset
- Mercedes S550 AC reset
How do I reset my Mercedes Air Conditioner?
If your Mercedes aircon is not working properly, you may need to reset it. Here’s how to do it:
First, check to make sure that the aircon is turned on. If it is, the next step is locating the reset button.
This is usually located on the control panel near the aircon’s ON/OFF switch once you’ve found the reset button, press and hold it for about 5 seconds.
If the reset process is successful, you should hear a click or a beep, and the aircon will start working again.
If the problem persists, however, you may need to contact a qualified technician for further assistance.
Why is my Mercedes AC not working?
If your Mercedes AC is not working, it may be due to a few different issues.
First, check to see if the AC compressor is operational. If the compressor is not running, the AC will not work.
Next, check the AC condenser to see if it is clogged or blocked. If the condenser is blocked, the AC will not work.
Finally, check the AC evaporator to see if it is frozen.
Mercedes Benz Air Conditioner Not Working
If you’re having trouble with your Mercedes Benz air conditioner, there are a few things you can do to try and fix the problem.
First, check the fuse box to see if a fuse has blown. If it has, replace it with a new one and see if that fixes the issue.
If not, there could be a problem with the compressor.
Try checking the belts to see if they’re loose or damaged. If they are, tighten or replace them as needed.
Finally, check the Freon levels in your AC system. If they’re low, recharge them using a Freon kit.
Mercedes-Benz’s climate control, air conditioner reset & clean the codes
Mercedes AC Rest Button
When you get into your Mercedes, you may notice a button on the dash that says “AC REST”. What does this button do?
The AC REST button is a feature that allows you to turn off the air conditioning without having to turn off the engine.
This can be useful if you want to save fuel or if you need to exit the car quickly.
To use the AC REST button, press and hold the button for three seconds. The air conditioning will turn off, but the engine will continue running.
Hold the button again for three seconds to turn the air conditioning back on.
So, next time you’re in your Mercedes and don’t need the air conditioning, hit the AC REST button and save yourself some fuel!
Mercedes W211 Air Conditioning Reset
If your Mercedes w211 air conditioning is not working properly, you may need to reset it.
This can be done by pressing and holding the “recirculation” button for about five seconds. You should then see the word “RESET” appear on the display.
Pressing the button again will confirm the reset and return the system to normal operation.
Common: Mercedes Air Conditioning Problems
One is a leak in the system. This can be caused by several things, including a loose hose or a faulty seal.
If you suspect a leak, you’ll need to take your car to a mechanic to check it out.
Another common issue is a faulty compressor.
The compressor is responsible for circulating the coolant through the system, and if it’s not working correctly, the AC will not work correctly either.
This is usually a more serious issue that will require a trip to the mechanic.
Finally, another possibility is that the AC system is simply not adequately charged.
This can be caused by several things, including a low refrigerant level or a leak in the system.
If you’re having trouble with your Mercedes air conditioning, don’t despair. Several things can cause the problem, and most of them are relatively easy to fix.
2011 Mercedes C300 Air Conditioner Problem
You’re not alone if you’re having trouble with your 2011 Mercedes C300’s air conditioner.
Many C300 owners have reported AC issues, ranging from not blowing cold air to only working intermittently.
While there’s no definitive answer as to what is causing the problem, there are a few potential solutions that you can try.
First, check to ensure that all the vents in your car are open and unobstructed.
If any of them are blocked by debris or snow, it could prevent cool air from entering the cabin.
Additionally, look at your AC filter and clean or replace it if necessary; a dirty filter can impede airflow and prevent the system from working properly.
If neither of these solutions solves the problem, then there’s likely an issue with the compressor itself.
In this case, you must take your car to a qualified mechanic or dealership for diagnosis and repair. We hope this helps get your AC up and running again!
Mercedes W212 Air Conditioning Reset
If your Mercedes-Benz W212’s air conditioning isn’t working as well as it should be, you may need to reset the system.
Here’s how to do it:
First, turn off the car and open the hood. Locate the air conditioner compressor and find the reset button on the side.
Press and hold the reset button for about 30 seconds. Then, turn on the car and turn the air conditioner to the maximum cool setting.
Let the car run for a few minutes, then turn off the air conditioner and turn the car off.
Repeat this process a few times until the air conditioner blows cold air again.
Mercedes W203 Air Conditioning Reset
If your Mercedes-Benz W203 air conditioning system needs a reset, here’s how to do it.
First, make sure the air conditioner is turned off. Next, locate the air conditioner fuse in the fuse box.
It will be labeled “A/C.” Remove this fuse and wait 10 seconds before putting it back in.
This will reset the system.
Finally, turn the air conditioner on and enjoy the cool air!
Mercedes W204 Air Conditioning Reset
You may need to reset the system if you have a Mercedes W204 and the air conditioning isn’t working. Here’s how to do it:
1. Start the engine and turn on the air conditioning.
2. Set the temperature to the lowest setting and the fan speed to the highest setting.
3. Turn off the air conditioning and wait for about five minutes.
4. Turn on the air conditioning and set the temperature to the desired setting.
5. Enjoy your cold air!
Mercedes Benz AC blowing hot air – What do you do now?
- Make sure the AC is turned on. It sounds simple, but it’s worth checking to make sure the AC is turned on.
- Check the AC compressor. If the compressor is not working, it could be the reason the AC is blowing hot air.
- You can check the compressor by starting the car and listening for the sound of the compressor. If you don’t hear it, the compressor may be faulty.
- Check the refrigerant level. If the refrigerant level is low, it could be the reason the AC is blowing hot air.
- You can check the refrigerant level by attaching a refrigerant gauge to the low-pressure port on the AC system.
- If the gauge indicates that the refrigerant level is low, you’ll need to recharge the system.
- Check the cabin air filter. If the cabin air filter is dirty or clogged, it can restrict airflow into the car, causing the AC to blow hot air.
- You can check the cabin air filter by removing it from the car and inspecting it for dirt and debris. If it’s dirty, you’ll need to replace it.
- Check for any AC system leaks. If there are leaks in the AC system, it can cause the refrigerant level to drop, resulting in the AC blowing hot air.
- You can check for leaks by using a UV light and a UV dye. If you see any areas where the dye is glowing, you’ll know there’s a leak.
Mercedes GLC Air Conditioning Problems
There are a few different things that can cause your Mercedes GLC’s air conditioning to stop working properly.
One of the most common issues is a leak in the AC system.
This can be caused by several things, including a loose hose, a cracked seal, or a damaged compressor.
If you’re experiencing AC problems, the first thing you should do is check for leaks.
It is important to leak repaired immediately.
Otherwise, your AC system will continue to lose refrigerant and eventually stop working entirely.
Another common issue that can cause your Mercedes GLC’s air conditioning to stop working properly is a faulty compressor.
If your compressor is damaged, it won’t be able to pump refrigerant through your AC system, and your AC will stop working.
If your Mercedes GLC’s air conditioning is having issues, there are a few things you can do to try and fix it.
First, check for leaks and have them repaired immediately.
Then, if your compressor is damaged, you can try replacing it.
However, if your AC system still has issues, it’s best to take it to a mechanic to check it out.
Hey Mr.Aris I’m having the biggest problem with my a.c. The heat works just fine but the AC want blow at all just hot air and I just need to know if I need to just take it to a shop. And let them inspect or is it something I can do myself really desperate so get back at me as soon as you can either by email or phone 504-908-3142
Hey, Brianca- In this case you should inspect your filter and coil as well. Sometime filter need to replace and coils may also need to be cleaned if they are covered in dust or dirt.
Most importantly, check first all of your settings works correctly.
Hope this work for you. Also, give an update to me if possible.
HEY MY NAME IS EDDIE AND I HAVE A GLK 350 2012 I MADE A MISTAKE BY PUTTING MY BATTERY ON WRONG I HAD A COUPLE OF FUSE BLOWN OUT MY RADIO, AC AND FUEL PUMP WASN’T WORKING BUT I CHANGED RADIO FUSE IT WORK FUEL PUMP WORKING NOW AC NOT COMING ON WHEN I TRY TO CUT IT ON THE FAN WORKS THE PIPE GET COLD BUT IT JUST DOESN’T COME ON THE LIGHTS WORKS I CHECK THE FUSE IT WORKS ANY TIPS
Hi Eddie! It sounds like you had some electrical issues with your GLK 350 after connecting the battery the wrong way. It’s good that you were able to replace the blown fuses for the radio and fuel pump and get them working again.
Regarding the AC not turning on, it’s possible that there may still be a blown fuse or other electrical issue that’s preventing it from functioning properly. You mentioned that you checked the fuse and it appears to be working, but it’s worth double-checking to make sure that the fuse isn’t just partially blown or has a loose connection.
Then go for check AC compressor or some other component of the system. And then you could try checking the AC system’s refrigerant levels to make sure that there’s enough refrigerant in the system to properly cool the air. If the refrigerant levels are low, it could cause the AC to work improperly or not at all.
if these aren’t to work for you then I would recommend taking your car to a qualified mechanic or AC specialist who can diagnose the issue and recommend a course of action. They may need to perform some electrical testing or other diagnostic procedures to determine the root cause of the problem.
Thank you so much Aris do you think it can be the blower fuse under gloves compartment if they have any because I replaced the fuse behind the radio that made it work do you think they more fuse I can check beside the ones under hood and the ones in the rear trunk
Yes, it’s possible that the blower motor fuse under the glove compartment could be the issue.
This website was… how do I say it? Relevant!! Finally I have found something that helped me. Thanks!
Thanks for the words! That’s a huge motivation for us.
Where exactly is the button I have to press the recirculation button to reset my 2016 Mercedes Benz c300 air flow cause all of a sudden it started to blow warm air however when we park and come back to car and restart it it starts to blow cool air then starts blowing warm air again?
The recirculation button on a 2016 Mercedes Benz C300 is located on the climate control panel, just below the temperature controls. It is a small, round button with a picture of a car with a circle around it.
To reset the air flow, press and hold the recirculation button for three to five seconds. This will clear the system’s memory and force it to start over.
If the air conditioning is still blowing warm air after you have reset the system, then there may be a problem with the air conditioning compressor or the refrigerant level. You should take the car to a mechanic to have it checked.
I hope this help!
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