hi I am having a problem with my Audi A3 2.0 TDI Sportback While I'm Driving My Radio comes on and off and my central locking clicks as if doors are unlocking and locking every now and again seems to be an intermitant fault has anyone else had the same problem

I do know that door locks and radio are supplied by separate fuses, so I think the most likely common fault would be a bad earth. Have a look at the battery terminals and the fuseboard earthing as a first step.

Scan the car for faults with vcds. Most garages can do this for a small fee 

Hi my car won’t fire until the yellow gearbox sign comes on it turns over but won’t fire till this light comes on which doesn’t come on sometimes till I’ve turned on and off several times any ideas please