LSG 1 did you have a look at your sensors and plug at abs unit? Also for anyone, had a problem with cdc safe on my radio which I still have but I took my radio out and have basically had this problem since just after that, also my rear passengers side electric window has stopped working. Now is the abs tc speedo thing a coincidence or could I have disturbed something around the radio that could have give me the abs tc speedo problem and rear window problem? Also have lost power steering a couple of times when starting the car then it just starts working again within a minute
Hi paulr.
Quite a few vehicles now have a stereo system that is fed the road speed signal from the ABs sensors (or others). This enables the stereo to increase in volume as the road speed/noise increases. This was one of the main selling points on the advert for the Vectra a few years ago! Since the speedo, cruise, TC and ABS use this signal, they all go down. At the moment, many people are changing stereos, plugging the new (non compatible) ones in, and causing major problems. When expensive scanners are plugged in to check for fault codes/live data, the electrical shorts caused by the new stereo are destroying the scanners (lives are appearing at the EOBD socket where they shouldn't be). Quite a few garages now won't touch a car with a non genuine stereo system in it without it being disconnected first.
Andy.