►Audi A3 ►Controls and displays ►Instruments and warning/indicator lamps ◀Warning and indicator lamps
If the indicator lamp 
lights up when the ignition is switched on, the glow plugs are preheating.
lights up when the ignition is switched on, the glow plugs are preheating.If the indicator lamp flashes while the Audi A3 is moving, there is a fault in the engine management system.
Drive slowly to a qualified workshop without delay and have the fault rectified.
If the indicator lamp lights up when starting the engine, there is a malfunction in the automatic start function. Proceed as follows to start the engine:
lights up when starting the engine, there is a malfunction in the automatic start function. Proceed as follows to start the engine: