BimmerMania.com

When I start my car everthing works fine, after the engine is warmed up my radio, windshield wipers, obc display, power windows, power locks, and sunroof all lose power. If the car is turned off, cooled and restarted, everything will work fine until it heats up again. Doesn't matter if I'm driving or idling.

Any helpful tips would be great. Thanks!