I have viewed an Audi A6 2.5 TDI SE (2001) and am considering buying it. however, I am concerned that when the ignition is first turned on (but engine not fired up), all of the lights on the dash display (eg Air Bag, ABS, handbrake etc) are on/light up but the Engine Management light does not. Is this normal? Obviously concerned if the garage have tampered with it to hide a Engine Management fault. Any help on this appreciated. Thanks.