A/C not blowing cold air, no sound from compressor?
Thread Starter
Joined: Sep 2014
Posts: 356
Likes: 8
C63 AMG Coupe, BMW 335xi Frozen Silver
A/C not blowing cold air, no sound from compressor?
My A/C stopped blowing cold air in my E63s S212. After a scan, the only error code showing related to A/C was 912749 (air quality sensor malfunction).
What I’ve done so far:
- Fuses have been checked
- Refrigerant levels were checked (originally too much Freon so I removed some back to normal levels)
- Changed the air quality sensor
I do not hear the compressor at all when A/C is on.
Hoping the forum gods can point me in the right direction as I do not want to go to the dealer for this.
What I’ve done so far:
- Fuses have been checked
- Refrigerant levels were checked (originally too much Freon so I removed some back to normal levels)
- Changed the air quality sensor
I do not hear the compressor at all when A/C is on.
Hoping the forum gods can point me in the right direction as I do not want to go to the dealer for this.
Out Of Control!!
Joined: Apr 2019
Posts: 12,230
Likes: 6,903
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
A/C basic troubleshooting
My A/C stopped blowing cold air in my E63s S212. After a scan, the only error code showing related to A/C was 912749 (air quality sensor malfunction).
What I’ve done so far:
- Fuses have been checked
- Refrigerant levels were checked (originally too much Freon so I removed some back to normal levels)
- Changed the air quality sensor
I do not hear the compressor at all when A/C is on.
Hoping the forum gods can point me in the right direction as I do not want to go to the dealer for this.
What I’ve done so far:
- Fuses have been checked
- Refrigerant levels were checked (originally too much Freon so I removed some back to normal levels)
- Changed the air quality sensor
I do not hear the compressor at all when A/C is on.
Hoping the forum gods can point me in the right direction as I do not want to go to the dealer for this.
Can you see compressor shaft spinning?
Not the outside part, the inside part.
Compressor clutch solenoids go bad routinely. Clutch does not spin at all (beside the PWM Valve).
By doing this DIY you get to replace only the bad parts for peanuts.
