I unplugged the unit on my 03 E55 whenever I serviced the brakes! My friend who is a tech at the dealer told me to do this if I don't have access to an MB SDS.

I like my fingers too much to trust anything but actually unplugging the unit.

__________________
-Justin

91 560 SEC AMG - other dogs dd
01 Honda S2000 - dogs dd
07 MB ML320 CDI - dd
16 Lexus IS250 - wifes dd

it's automatic.