Hi i have a 2006 A4 when i press the spanner button it dosnt show remaining miles and time until the next service it just shows dashes. I have tried to reset it but no joy. Any ideas?????

I think the dashes are part of the resetting procedure - see the following:

 

Here's the routine to get rid of the INSP or OIL blinkers! It uses the 2 buttons on the instrument cluster (the speedo/clock/tacho), they are numbered as under (also see attached pic):
1. Clock adjustment button
2. Trip odometer reset button
3. Trip odometer display

The routine is as under:
1. Switch ignition off
2. Press and hold down reset button for trip odometer (2) in instrument cluster
3. Switch ignition on while button is pressed down. "Service OIL" appears in the display of the trip odometer (3)
4. Release button
5. Pull setting knob for time (1) in instrument cluster until "Service OIL" indication is reset. "- - -" appears in display (3).
6. Press reset button for trip odometer (2) again, to advance to next service event. 
7. Release button. 
8. "Service INSP" appears in display (3).
9. Pull setting knob for time -1- until "Service INSP" indication is reset. 
10. "- - -" appears in display (3).
11. Switch ignition off.

Thanks for the info, i got the hand book out and its says it will show dashes for 500k after a reset.