For the second time yesterday when starting up, key poss 1 everything working as it should, poss 2 and starting the engine no fan / AC, no windows, no radio even the red light on the auto gearbox selector stayed on park when drive selected, it drove as normal with no probs and indicators working, all went back to normal after stopping and locking and unlocking and then restarting, any ideas whats causing this ?

BCU or IDM on it's way out

Water getting into the passenger compartment fusebox is a common cause of weird electrical issues.Do you have sunroof's in your DII,and do they leak ?

Hi! I have a 1999 TD5.The red security light keeps blinking, even when the car is unlocked.Also, the radio green light keeps coming on without the radio it'self.Any ideas out there? Sometimes the car won't start after just two days,and other times it's okay after 2 weeks! I'm in Germany and can't find a mechanic to sort this out.I did recently have new brake lines installed and also brake brushes.Could that have upset the electrical system?