Can anyone please help me? A4 TDI 170 on a 07 plate I have an intermittent problem.. I get in the car and the engine turns over and over but will not start?? Ive noticed that when this happens the heater coil light does not come on at all?! After a while it can be 2mins to 10 mins of takin key in and out and locking and un locking car, all of a sudden the heater coil light comes back and boom it starts.. also doesnt miss a beat once its started?? its got me beat tho... It shows no fault codes either! Any help would be appreciated!