I'd suspect a corroded or otherwise dodgy main earth connection from the battery, or a dirty / corroded main connector in the wiring loom somewhere. Could be a dicky fuse -- those are more likely to blow (so you'd have no power until it was replaced) but I wouldn't completely rule them out.

"Indicative light failure" is a strange warning message, I'd suggest googling that and see what results you get, too.

No warning lights at all. it turned on the electronic hand-brake - which was the scarry bit - if that happened again on a motorway at speed.

Thats the bit i don't like, i have a serious problem with electronics being able to take control like this either by design or fault, fast forward a few years when steer by wire is becoming common and there's a glitch and you don't need much of an imagination as to possibilies.

Worrying is that its not just cars, lorries (presumably coaches too) also have radar guided CC now, so any vehicle could be cruising down a crowded wet motorway and suddenly throw a wobbly at any time and apply ALL the brakes fully, nice thought.

Edited by gordonbennet on 28/07/2014 at 11:58