Guys,

I've been having what may be a very intermittent Body Control Module fault or wiring problem...

Symptoms:

(Radio shuts off & on repeatedly - sometimes climate control goes off and occasionally the whole instrument panel goes out too!)

This condition may last from a few seconds to maybe 30 seconds - sometimes you lose the backlighting and the instrument
panel goes dark and all the gauges drop to zero as well?)

Only occurs when the car is relatively cold (usually within 10 minutes of an initial startup)
Noticed on winter days it appears more frequently....

Fault may also materialise with sudden acceleration or braking / rough road - If it goes off while Braking hard you may also get an ABS
fault alarm..with the chimes - Interesting it does not log this condition as a fault code?

Once the car has warmed up (or you have the heater on) it doesn't happen again ....


This situation (lots of devices all going off together - cold fault / intermittent etc) has me thinking
its in the electronics not the wiring ---I may have a dry joint or failing component in the BCM (Level 3 - LUX)???

Does anyone have a schematic for the VZ - LUX (Calais V8) BCM?

I want to log some of the BCM pinouts to see if I can trap what's happening....

Thanks,
McSquirt