Switch off the rain sensor - rain stalk position 0
Switch off terminal 15 and terminal R - turn off and take the keys out
Switch on terminal R and terminal 15 and wait 10 seconds - put the keys back in and turn to position 2.
In the 10 seconds waiting period, the new adaptation values are determined and stored.

__________________

4.8is 2004 imola red
4.8is 2005 Black on Black - DINAN/2 sold
4.4 2004 X5
2003 330xi
2008 328xi - sold
4.4 2000 X5 - sold