2012 Touareg - level control - mechanical failure.

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deutschtech

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Got a recurring level control fault on a 2012 Touareg (7P). Would love some input from some techs out there.

0644 - Level control system
C10D3 07 [008] - Mechanical Failure.

Vehicle arrived at workshop with excessively high ride height at the rear axle. Scanned module and found fault above. Confirmed no signal present from front right level sensor (checked manually by moving sensors through full range of motion) via live data. Installed new level sensor and cleared fault and carried out road test. Vehicle level now good but above still fault returns. Reset level control system but fault returns after short period. Checked all level sensor signals via live data- all plausible. Will do terminal 30 reset tomorrow but not optimistic.

Can anyone shine some light on why this is happening? Thanks in advance.



Original fault log with freeze frame data:

Address 34: Level Control Labels: 7P0-907-553.clb
Control Module Part Number: 7P0 907 553 K HW: 7P0 907 553 K
Component and/or Version: PASM H01 1110
Software Coding: 14210000
Work Shop Code: WSC 31414 790 00001
ASAM Dataset: EV_PASMConti 001004 (VW52)
ROD: EV_PASMConti.rod
VCID: BFCE1F9826DA3FB264-80EA
2 Faults Found:

0644 - Level control system
C10D3 07 [008] - Mechanical Failure
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 13
Fault Frequency: 221
Reset counter: 2
Mileage: 583168 km
Date: 2032.11.01
Time: 05:41:00

Default: 00
Default: 7F
Default: 00

0643 - Ride-Height System; Plausibility Error
C1046 00 [009] - -
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 1
Fault Frequency: 181
Reset counter: 2
Mileage: 670720 km
Date: 2035.10.09
Time: 25:08:60

Default: 00
Default: 70
Default: 00
 
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golfi_vend

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Accumulation tank is full of nitrogen? Ride-height recalibrated? Compressor and valve unit working in specs?
 
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deutschtech

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Thanks for taking the time gents.
So I’ve replaced the sensor that was flat-lining and then reset system. I’ve also entered the measured ride heights to calibrate. I’m fairly sure these procedures were completed successfully (I used an Autel Maxisys Elite). I do have VCDS and odis but shouldn’t need.
Apologies, I’m going to need some help on the acronyms, RTFB & JPPSG?
Thanks again and look forward to you responses.
 
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deutschtech

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To update: fault fixed. Power line to compressor was heating up behind fascia fuse panel causing excessive volt drop. Removed to rectify.
 
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frodeih

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To update: fault fixed. Power line to compressor was heating up behind fascia fuse panel causing excessive volt drop. Removed to rectify.
Hi, hoping to wake this tread up again. Im havving same kind of problems, and am running out of possible solutions to try. How did you diagnose issue you have described?
 
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