So - on our CDTI (2005) - sometimes when you break you get the bulb symbol in the dash and on the computer screen it shows you that your passenger rear brake bulb is out.

But - its not, and brake again and the bulb symbol disapears. This only happens every now and again.

Ive cleaned all the rear brake bulb holder contacts and plug with contact cleaner and a wire brush. Ive also made sure that the contact spring piece in the bulb holders is up high etc.

Any other reason that can be causing this. Brake bulbs are not that old so not tried another new set yet??

Cheers