BMW 320D Sport automatic 2003 29,000 miles

I own the above car and for the past couple of days a picture of a car has appeared on my display with a sign for a faulty bulb at the rear of the car. Well that's what i think it is I have checked all the bulbs they are working fine. The warning sign comes and goes it does not stay on all the time. Please help

the problem you are experiencing is due to the wiring connectors corroding. it is usually on the ground wire.
inspect the connectors at the rear light assemblies too.