Has anyone experienced the same strange fault that I am having? Any ideas from anyone on how to fix it?
Car - 2004 A6 Avant, 1.9TDi, Multitronic, 90k miles
A couple of minutes after cold startup, the gearbox selection (as shown on the dash) keeps changing from D to S and back on it's own. The gearbox responds by selecting a lower ratio. Whilst it is "stuck" in S mode, moving the gearstick to manual override has no effect, it stays in S mode. After a few seconds it returns to normal. It can do this 10~20+ times until it eventually returns to normal as the car reaches temperature.
The temperature dependancy may be a red herring.
My thought are that it's a simple limit switch in the gearstick or a bad contact in the wiring loom to the ECU.
Any ides appreciated.