BMW 3 Series Forum - Technical Talk on the BMW E21
94 3.0 M3, BMW immobiliser, changed batteries, on reconnection it won't start?
All lights up but wont un-immobilise
Anything obvious to check??
Key fob = one button not 2, siren under bonnet says BMW 3T
So the advice I've found on web for BMW 3G EWS doesnt seem to be applicable