Hi folks,

My dad's had a 2.2DTi Vectra C for years, and he loves it. Recently though, when he locks it at night and leaves it, the indicators will flash and the rear numberplate illumination lights will come on. I was inside the car last night when this happened; it appeared something came on in the dashboard at the same time the indicators flashed. This was almost immediately after dad locked the car but it doesn't always do it right away.

Neither the doors nor the boot are unlocked when this happens, which leads me away from it being an issue with his key (he recently got it wet and started using the spare).

Anyone any ideas, is it a common fault or are we going to need to take it to Vauxhall?