BMW 335d QuestionsRefine by vehicle
No performance problems noted. The car has 81000 miles, check engine light went on about 8 months ago and the DEF tank was replaced. Ran out of DEF 2 months ago and was refilled by dealership.
Is there, in the same way as for the engine, a cooling systems or another fluid needed?
please try to answer it as short as possible
which people have the car