On my 1999 300M the head lights quit working, the tail lights quit working, the
power locks quit working, the internal heater blower motor runs on high full
time, the switch does not matter what position it is in. Gas gauge quit working, and wind sheild wipers and
all digital display on the trip computer & heater console has no information
displayed.

 

What about ignition switch functions/positions. Does the car start and run? Do you have automatic temp control?

 

yes car run fine and starts the ac is auto checked all the fuses everything is good but if you go the the relay and jumper pin 30 and 87 on that circuit will work like the head lights will come on for testing and i can test others the same way with jumpers

 

It appears that you have lost a bunch of BCM functions. It's under the driver's dash attached to the fuse box. You can try unplugging/plugging it and see if it comes back. The 2 grey connectors.

 

ok these controls make all this stuff work will try thanks

 

Found nothing so far ,do you think it's in the ignition switch or in that fuse section because thats a lot of main control not firing power I may have to get one from junk yard