Not able to reset the Service Indicator Lights?

Well, I wasn't either, despite all the stuff I found on the net regarding this. I decided to experiment a little on my own, and finally it worked! Try this:

1. Ignition off.
2. Short pins 7 + 19 with wire (remember to put a fuse on this wire).
3. Turn ignition on and wait for about 4 seconds for an Oil Service reset, 10 seconds for an Inspection reset, then
4. Remove the wire.
5. Replace the cap on the diagnostic socket.
6. Turn ignition off again.

You must do it exactly the way described above. Otherwise it won't work.

Please note that the number of seconds given above seems to be working for most cars, but mine need a lot longer...

Remove the cap from the diagnostic socket (right side of the engine bay on my LHD) and this is what you will find - well, my drawing of it anyway. The pins marked with red are the ones you are looking for. Use the cut in the center Mr. Pacman for pin identification.