The sensor mat is replaceable. About $100 part. Some years were recalled (but it didn't go all the way back to 2001 for mine...).

Here's one write up. Some people rig up a bypass, but that is not my way. Want it working as it was designed...

http://www.xoutpost.com/bmw-sav-foru...srs-light.html

__________________
David.X5
2001 X5 4.4i Sport
SOLD! at 160k miles