Park assist / parking sensor fault
Hi all
I paid for a VCDS readout from a chap local to me. I wanted a general overview of the car as I've only had it a few weeks. One of the known issues was with the parking sensors and I wanted to see if VCDS would point me in the right direction. Here is the relevant section from the output:
Code:
Address 76: Park Assist Labels: 8Z0-919-283.lbl Part No: 8Z0 919 283
Component: Parkingsyst. A6 RDW D08
Coding: 01116
Shop #: WSC 02334
VCID: 020199400EC6EA51FF-5054
1 Fault Found:
01549 - Supply Voltage for Parking-Aid Sensor
29-00 - Short to Ground
The symptom I have:
I put the car into reverse and 80% of the time I will get a loud continuous tone for about 5 seconds and then silence. Not another peep out of it even when I'm just millimetres away from an obstacle. 20% of the time when I put the car into reverse I get absolutely no sound at all.
What I've tried:
Unplugged the two connectors going to the parking module above the n/s/r wheel arch. Sprayed contact cleaner and reseated. No difference.
Removed all four parking sensors (mine is the Final Edition model with the sensors relatively accessible at the bottom of the bumper extension bit). Contact cleaned all plugs and sockets and reassembled. No difference.
Plugged each sensor back in one by one and put the car into reverse. Exactly the same symptom - will park assist work with only a limited number of sensors connected? I'm guessing not, so perhaps this last step was pointless.
Putting the car into reverse and quickly running to the back to try and listen to each sensors. I've done this with all four and I can't hear any of the clicking I've read about
Now, the 'Short to Ground' is a bit ambiguous (well, only because of my understanding of VCDS) - does the 29-00 identify a particular sensor? Could it be the module itself? I have seen modules on ebay for about £15 and I've ordered one new sensor for £9 just to swap it out with each of the four existing ones just in case it's one faulty sensor causing the problem. Of course, I'd like to troubleshoot in a more efficient way than simply throwing money at the problem, so I'd appreciate any suggestions. :)
Re: Park assist / parking sensor fault
Can you try removing the connector of one of the parking sensors and check i the fault code changes?
Re: Park assist / parking sensor fault
Unfortunately, I have no permanent access to VCDS. I guess I am putting off the inevitable and will have to buy the hobbyist version rather than forking out per scan
Apart from that, anything else you can think of that I can try?
Thank you
Re: Park assist / parking sensor fault
I tried swapping each of the four sensors with my new one and retesting. I still got the same long tone when engaging reverse. I guess it could be multiple faulty sensors, but I would have thought that fairly unlikely?
I have ordered the parking module for a £15 punt. The seller says I can return if it's not that causing the problem.
I'd like to bell out the cabling to ensure that there isn't a break or short between the module and the sensors. The only trouble is that I'm having trouble finding a wiring diagram that includes parking sensors - can anyone help with that?
Thanks
Re: Park assist / parking sensor fault
hi - did you ever fix the parking system issue?
regards
tom
Re: Park assist / parking sensor fault
unfortunately not. I'm just living with it at the moment.
I tried the £15 ebay parking module, but the symptom was the same. I have that for sale if you want! :D
I can't seem to find a wiring diagram that details the loom from the parking module to the individual sensors. I could then easily check to see if there is a short in any of the cables and check for continuity, etc.
Otherwise it may be a case of throwing £35 on three more new sensors and seeing what happens.
Gearbox issues to worry about at the moment though, so will come back to parking sensors once I've sorted out this bloody multitronic piece of junk.
Re: Park assist / parking sensor fault
Hi
My parkingsensors don't respond at all in A8 2008 facelift model The sensor button on the dash has no light either.
Running the VCDS gives me the following readings
Address 76: Park Assist Labels: 4E0-910-283.lbl
Part No SW: 4E0 910 283 C HW: 4E0 919 283 C
Component: Parkhilfe 8-Kan H12 0040
Revision: 00H12000 Serial number: 08740810504184
Coding: 0221008
Shop #: WSC 02313 785 00200
VCID: 234FF155E2CED91
3 Faults Found:
01549 - Supply Voltage for Parking-Aid Sensor
009 - Open or Short to Ground
Freeze Frame:
Fault Status: 01101001
Fault Priority: 3
Fault Frequency: 1
Reset counter: 167
Mileage: 183143 km
Time Indication: 0
Date: 2017.12.26
Time: 17:46:34
00576 - Terminal 15
008 - Implausible Signal
Freeze Frame:
Fault Status: 01101000
Fault Priority: 3
Fault Frequency: 1
Reset counter: 167
Mileage: 183143 km
Time Indication: 0
Date: 2017.12.26
Time: 17:46:34
01549 - Supply Voltage for Parking-Aid Sensor
002 - Lower Limit Exceeded
Freeze Frame:
Fault Status: 01100010
Fault Priority: 3
Fault Frequency: 1
Reset counter: 167
Mileage: 183143 km
Time Indication: 0
Date: 2017.12.26
Time: 17:46:34
My car is an Audi A8 3.0 TDI Quattro 2008 facelift model.
I have the camera as well which works well with the guidelines however the sensors and the sensor graphic do not respond at all.
I would appreciate any help
thanks in advance