I know it sounds wierd, but thats just what happened.

The M5 mirror swap was a 5 minute job. Just unclip the shroud. Turn the old mirror 45 degrees. Disconnect the plug... and reverse to fit the new mirror.

All seemed to be fine, but I noticed that it took a few clicks to get the car to lock (to check the red LED). But at least the red nose worked.

Then it took about 20 clicks to unlock the car.

Same with both keys, which were working fine and were coded to memory 1 and 2 seat positions. Eventually they work but I guess they are trying a million codes before finding the right frequency.

Is there more to the mirror than just a mirror and red nose ?

I'll stick the old mirror back on tomorrow to check it goes back to normal. Might try disconnecting the battery for 10 mins first.

Help anyone?

TIA. Kev