Firstly, thanks for taking the time to read my post.
I recently bought a 2007 A6 Saloon 2.0 tdi. Over the past week or so I have started getting a warning light on the self diagnostic cycle. This appears to tell me that I have a faulty rear, driver side brake light problem. The problem is that this problem is intermitent, if I turn off the ignition and restart the car it goes away for anywhere from 2 to 10 minutes. The brake lights work as they should when no fault is registering but the brake light and rear indicator appear to malfunction when the fault is being highlighted.
I would be greatful for any advice, as you can imagine, I am reluctant to put it into the garage for them to look at the car without an idea of what the problem is and whether or not it will be costly or not to repair.
I look forward to any help anyone can offer.