checked today on computer and said height sensor was faulty compresser is faulty and 2 egr valves faulty
ouch , there goes at least £1,000, or more if the garage are doing it
u can blank the egr but as ur is 2007 u need a software patch, which i think is around £250 quid
did they give u the fault codes by any chance
also did they find out what the grind was at the front wheel