Exterior Bulb Warning light on but no deab bulbs?
Hi: For a second time I get an exterior bulb warning light but it seems that all the bulbs work, although I can't verify if it's the panic brake light bulbs, or for that matter, something in the trailer harness wiring (I have the factory version).
First time it came on, after a few miles and a few trips, the front lights flashed on and off all by themselves (can't be sure if it was the fogs or the mains) and the warning light went out. Some sort of auto-reset?
Now a few weeks later and the warning light is on again. I'm beginning to wonder if it's the control unit (is that called the LCU?)
There is another thread where the OBD2 code indicated a thermostat heater problem, but the thread did not come to a conclusion.
Any thoughts out there about what I might look for?
Thanks in advance
2005 X3 3.0i, CPO, white, auto, adaptive xenon lights, stock suspension, premium pkg, cold weather pkg, heated steering wheel. Self installed: factory hitch, paint protection film, mud flaps