The side lights come on at the first click of a wheel on the stalk switch, on with key ON.They may also be turned on by removing the key and turning backward - PARK position - while keeping a special button depressed.The number plate light and numerous other interior lights for lighting the passenger compartment, instruments and controls are activated together with the side lights (these are described and explained in the wiring diagrams for the relevant components).The side light circuit is protected by special fuses located in the engine bay junction unit and in the under-facia junction unit.A warning light on the instrument panel indicates when the side lights are on.In the Comfort version of the instrument panel, a side light and number plate light check function is available.Any faults are recognised by vehicle branch (right or left side). In this case, the Body Computer sends the fault status to the instrument panel via the CAN line. An exterior lighting warning light comes on on the panel and the information is shown simultaneously on the display.