Thanks for replying Tim. I must say it is rather frustrating, not being able to isolate the problem by simple means. I have now established that the brake lights come on - sometimes immediately, other times after a number of hours - whether the car is locked or not. I suppose at the end of the day it's going to be down to one of the systems controlled by an electronic-cum-computerised circuit. We'll get there in the end!! Maybe I should update the post when resolved?
Quote Originally Posted by Tim View Post
First time I've heard this one Mike. Wonder if its arcing across something like the security system which is one of the sub systems that stays live.