Engine management EPCEngine management EPC  - Warning and indicator lamps - Instruments and warning/indicator lamps - Controls - Audi S5 Owner's Manual - Audi S5

This warning lamp monitors the engine management system on petrol engines.

The EPC warning lamp (Electronic Power Control) lights up when the ignition is switched on to show that the lamp is working properly.

If the warning lamp lights up while the vehicle is moving, this indicates a fault in the engine management system. The engine should be serviced by a qualified workshop without delay.