The ABS & brake warning lights on my car have been going on and off intermittently. I had a diagnostic test months ago and it looked like the rear left ABS sensor. This was replaced yesterday (albeit a bit late) at a total cost of £190. However, the fault still exists and I have been told that 5 hrs labour is required to check the wiring. Does this seem like a con? FYI the dealer is Dovercourt, Battersea and I have the feeling they are taking me to the cleaners here!

Appreciate any advice at all!

Alex