smulder

Hello All,

In very cold temperature (ie -10F or worse), within a day or two I'll find my car all the way down on it's blocks (as low as it will go). Starting and driving the car will rarely see the issue resolved. I brought it into my heated garage for a day, turned the car on without starting it and the compressor worked, the car adjusted itself, and the compressor turned back off again. Below are the faults that were in the car before I reset it. After resetting the faults (and after the car was in the garage and had adjusted itself) there were no more faults. Can anyone help me with where I should go next to try to troubleshoot this? Thanks, Steve

Address 34: Level Control Labels: 4E0-910-553.lbl
Part No SW: 4E0 910 553 J HW: 4E0 907 553 F
Component: LUFTFDR.-CDC H06 6310
Coding: 0015510
Shop #: WSC 02313 785 00200
VCID: 2A5C9A8785EC8E6E23-807E

4 Faults Found:
01400 - Suspension Level Control
002 - Lower Limit Exceeded - Intermittent
Freeze Frame:
Fault Status: 00100010
Fault Priority: 2
Fault Frequency: 7
Reset counter: 78
Mileage: 80164 km
Time Indication: 0
Date: 2017.12.25
Time: 15:26:01

01772 - Signal from Level Control Pressure Sensor (G291)
008 - Implausible Signal - Intermittent
Freeze Frame:
Fault Status: 00101000
Fault Priority: 3
Fault Frequency: 31
Reset counter: 76
Mileage: 77838 km
Time Indication: 0
Date: 2017.10.27
Time: 16:03:56

01398 - Signal Conductor for Central Locking; Doors Open
004 - No Signal/Communication - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 4
Fault Frequency: 1
Reset counter: 78
Mileage: 80331 km
Time Indication: 0
Date: 2017.12.31
Time: 11:07:59

01399 - Relay for Level-Control Compressor (J403)
009 - Open or Short to Ground - Intermittent
Freeze Frame:
Fault Status: 00101001
Fault Priority: 2
Fault Frequency: 1
Reset counter: 168
Mileage: 0 km
Time Indication: 0

ltooz_a6_a8_q7

Check the battery, if everything works then wait until it fails again. You may have a slow leaks somewhere. When it fails again, check a post in my signature about a leaked strut.
Cheers,
Louis

smulder

Why the battery? Just curious how they might be related. Guess I was thinking that something was marginal and shrunk enough in cold weather to allow air to leak. I had the problem at the end of last winter and then it was fine all summer and fall until we got really cold again. Any thoughts are appreciated.

richard-tx

Level Control sensor is what I would look at. 31 times it faulted with 76 resets. Then there is the relay issue too. The relay is sort of a problem child so change that first.

Super cold weather gremlins are hard to sort out.