1998 Audi A8 Airbag system diagnosis.
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1998 Audi A8 Airbag system diagnosis.
How do I go about diagnosing an Airbag system? The lamp remains lit throughout the time the car is started and driven. Car is new to me so I am trying to diagnose this problem..
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Joined: Jul 2001
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From: Wilbur by the Sea
You need the ross-tech tool or VAG-COM
There is a stored fault code, using the OBD-II software (available from <a href="http://www.ross-tech.com">ross-tech.com</a>) you can troubleshoot it.
My business partner's 98 A8 has had the air bag warning light come on twice, here was his fault codes:
2 DTC's Found:
00532 - Voltage Supply B+
07-10 - Signal to Low - Intermittent
00656 - Airbag Seat Occupant Sensor (G128)
32-10 - Resistance too High - Intermittent
10/16/03
VAG-COM Version: Release 303.1
Control Module Part Number: 4D0 959 655 H
Component and/or Version: Airbag 7 Audi 050C
Software Coding: 00225
Work Shop Code: WSC 02324
1 Faults Found:
00656 - Seat Occupied Sensor: Passenger Side (G128)
32-10 - Resistance too High - Intermittent
I just cleared them and it went away both times, the first time for 8 months or so, and I just cleared it the second time a couple weeks ago. The cancelling ring in the steering wheel can have weird electrical connections sometimes, or that's what I think it is.
pw
My business partner's 98 A8 has had the air bag warning light come on twice, here was his fault codes:
2 DTC's Found:
00532 - Voltage Supply B+
07-10 - Signal to Low - Intermittent
00656 - Airbag Seat Occupant Sensor (G128)
32-10 - Resistance too High - Intermittent
10/16/03
VAG-COM Version: Release 303.1
Control Module Part Number: 4D0 959 655 H
Component and/or Version: Airbag 7 Audi 050C
Software Coding: 00225
Work Shop Code: WSC 02324
1 Faults Found:
00656 - Seat Occupied Sensor: Passenger Side (G128)
32-10 - Resistance too High - Intermittent
I just cleared them and it went away both times, the first time for 8 months or so, and I just cleared it the second time a couple weeks ago. The cancelling ring in the steering wheel can have weird electrical connections sometimes, or that's what I think it is.
pw
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Joined: May 2002
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Re: Back seat occupancy sensor
I had the same problem with both sides of my back seat setting off this code. I ended up having the left side replaced under warranty and I did the right side myself.
The dealer told me the occupancy sensor had gone bad so it needed to be replaced. I bought the part and installed it myself. The job isn't that hard to do. Just remove the seat and disassemble the leather covering.
Observing the sensor pad as I removed it I noticed that it wasn't glued to the seat foam anymore. I believe the glue dried out and caused the pad to not be attached to the foam.
Jeff Bernstein
In looking back I believe that the adhesive that holds the sensor pad to the seat may go bad and this may be what causes the intermittent fault. Knowing this I would check to make sure that the sensor is still glued to the foam before I bought a new sensor for about $100.
Jeff Bernstein
The dealer told me the occupancy sensor had gone bad so it needed to be replaced. I bought the part and installed it myself. The job isn't that hard to do. Just remove the seat and disassemble the leather covering.
Observing the sensor pad as I removed it I noticed that it wasn't glued to the seat foam anymore. I believe the glue dried out and caused the pad to not be attached to the foam.
Jeff Bernstein
In looking back I believe that the adhesive that holds the sensor pad to the seat may go bad and this may be what causes the intermittent fault. Knowing this I would check to make sure that the sensor is still glued to the foam before I bought a new sensor for about $100.
Jeff Bernstein
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