I've recently bought a 2002 A4 Quattro 2.5 tdi.
Just noticed today that when I switch my ignition on, the check engine light does not light up, and now I am quite worried that somebody has removed the bulb!
Can anybody tell me wether it should light up or not?
Is there a way I can safely make the light come on to make sure the bulb is there?
Many thanks in advance