2010 E350 AC not blowing cold Air
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Newbie
Joined: Apr 2021
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E350
2010 E350 AC not blowing cold Air
Hello everyone I have a 2010 E350 the AC is not blowing cold air. I also read a post that someone had the same issue with the AC and the BT being choppy and he had software update and solved the AC issue. Has anyone have this issue. I’m wondering if I need to get a software update because my BT is also choppy sometimes.
Junior Member
Joined: Aug 2020
Posts: 19
Likes: 5
From: Ontario
2014 Mercedes E350
Hello everyone I have a 2010 E350 the AC is not blowing cold air. I also read a post that someone had the same issue with the AC and the BT being choppy and he had software update and solved the AC issue. Has anyone have this issue. I’m wondering if I need to get a software update because my BT is also choppy sometimes.
Thread Starter
Newbie
Joined: Apr 2021
Posts: 5
Likes: 1
E350
I will get it checked. When I put the AC/PRO gauge on to check is the r134 is low it’s in the red zone. I don’t think the compressor is kicking on. I am also wondering if I should let some of the freon out to see if the compressor kicks on. Please let me know what you think. Thanks
Out Of Control!!
Joined: Apr 2019
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From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
BEWARE!!
I will get it checked. When I put the AC/PRO gauge on to check is the r134 is low it’s in the red zone. I don’t think the compressor is kicking on. I am also wondering if I should let some of the freon out to see if the compressor kicks on. Please let me know what you think. Thanks
Save yourself some time, buy a good OBD2 scanner to display the live data of your A/C system. It will report just about everything you need to troubleshoot the compressor clutch not engaging...
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Out Of Control!!
Joined: Apr 2019
Posts: 11,923
Likes: 6,775
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
Out Of Control!!
Joined: Apr 2019
Posts: 11,923
Likes: 6,775
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
You don't have a clutch. The compressor is a variable displacement compressor, it's always on. The flow of refrigerant and piston swash plate angle is controlled by a solenoid in the compressor body. If you are over-pressure for whatever reason, the high-pressure switch will trip the ECU to cut operation to avoid damage to components. Open the high side Schrader valve and vent refrigerant to atmosphere a little at a time til you get pressure in the green on the low side. Do this while the car is running. Don't worry about the tree huggers, 134a contains no chlorine, therefore no ozone-depleting effect. It is, however, a greenhouse gas. But so is everything else. Let us know how it goes.
My '14 just has the classic on/off clutch compressor.
Perhaps warmer locales use improved an equipment...
