Hi there,
absolute newbie to A8 cars but have been reading this and other forums due to being interested in purchasing an A8. Finally purchased a car (1998 3.7, 83000 miles or so I realised all ) two days ago, drove home 75 miles and all was good. Short 3 mile trip the next day, still good then gave it a wash and general clean up. Started the car and noticed the CAT warning light on. Disconnected the battery and checked the fuses that looked relevant in line with owners handbook (fuse carrier 4) nothing blown, re connected the battery, cat light gone so set off on a short trip. After a mile or so I noticed all gearbox lights were lit red, PRND432, it was still changing up and down the gears fine, turned round and drove home, parked and disconnected the battery. Reconnected battery and started this morning, when going into reverse or drive, a quite vicious change/thud. Have checked the black box for water ingress in line with forum website, bone dry, tested the 4 fuses in there, all good. Looked at the MAF and can see nothong untoward (though I admit it would have to be an obvious fault for me to spot something) The mileage on the car has been verified re Gov website and I believe it had been stood for a while as green moss was on parts of the trim. Could I be that unlucky that the gearbox problem has occured the day after purchase (motorway speed on journey home was legal, revs on test not over 3,000) can the gearbox fault (if it is) be hidden by a dodgy garage (no warranty on car) or could it be electrical gremlin. I have looked at getting a code reader , 2.8 and 4.2 readers seem popular but 3.7 readers on the net seem scarce? Any help is most appreciated, I knew I was taking a punt with the motor but was not expecting it this soon,
thanks,
Dave
3.bmp