The various sequences of the on-board computer may
be displayed instead of the mileage recorders by
successively pressing the button on the end of the
wiper stalk (ADAC button). Each feature is reset by pressing the Reset button on the end of the stalk.
Now for your flashing spanner problem..
Mileage to next
change informs the driver of the distance (in miles for UK versions ) which can be travelled before the next
change. When the distance left is less than 1000 miles or when 22 months have elapsed, the spanner flashes for 30 seconds when the ignition is switched on or when the Mileage before
change page is displayed on the ADAC. The spanner flashes
permanently if the range falls to 0 or after 24 months.
To reset the mileage to next
switch on the ignition,
select the "fuel range" page on the ADAC,
press the Reset button for approximately 5 seconds,
the range flashes for 4 seconds then remains
release the Reset button when the corresponding
value appears. i.e. 18000 miles.
Don't forget to service the car though my friend !