Hi Wolfgang,
The instrument next to the door on the drivers side is the 'tyre pressure gauge' sometimes known as the 'random information generator' or 'tyre panic gauge'.
These were standard fitment on all Aeros until later Series4 cars, however they were often unreliable, (my series 2 wasn't too bad, but occasionally it would lose the rear wheels for no obvious reason!).
The lights below the tyre gauge, I cannot for the life of me remember what they are, I'm not sure they are on the S4 even! I'm sure a series II owner can post up.
Or someone might be able to scan their handbook?
