I bought a audi a6 2010 about 3 months ago but 1 the fan keeps goin when you switch it off been back to garage he still carnt find the fault plus its just been back in for the coil light on and limp mode picked it up after he said he fixed it but today it came on again don't know what mechanics he uses but I question there ability it's needs to go back in need some points to least to tell them