Am having numerous problems with my 2010 audi a3 sline 2.0 tdi. 2 weeks ago the engine manage my light came on and the. Heading down the motorway the glow plug light came on and the car went into limp mode. Turn the car off and start again and the car is out of limp mode but the lights are still on. Now the dpf light has just come on and the stop start is saying system failure. Help please.