When the SRS light stays on for 2 minutes there is a front seat belt buckle fault. To find the fault a scanner must read the code & then re-set the MIL light.
On the alarm system the starter interlock is done thru the central locking. Would check to see if the alarm ECU is un-plugged.
The alarn ECU is in the trunk just forward of the spare tire.
The heated seat system uses 2 fuses, # 21 & 25. The heated seat relay(computer) controls the operation.
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)