Hi, I has been jumping around the net looking for an answer on the "PPP" message displayed on the OBC/ Clock of my 1998 Z3 2.8 Liters.
Since I have removed the battery ( in order to perform a ordinary clean up to the trunk) the Display just shows continuously the "PPP" message and never goes off ( does not matter if the car is On or Off).
My OBC / Clock does not have any reset button ( at least visible from the exterior) but only two Buttons ( S/R and the Clock).