The dipped headlamps are turned on by the steering column switch unit by turning the ring nut forwards: the dipped headlamps are activated, the daytime lights go out and the side lights, dipped headlamps and number plate lights come on.

The switching on of the dipped beams is managed by the Body Computer.

On some versions, the dipped headlamps are also activated automatically by the dusk sensor.

This sensor, located on the windscreen under the interior rear view mirror, detects the variations in outside brightness depending on the light setting: the greater the sensitivity, the less external light is required to activate the exterior lights.

The setting of the dusk sensor can be adjusted using the instrument panel setup menu.

When the ring nut is turned in the opposite direction (AUTO position) the side lights and the dipped headlamps automatically come on simultaneously depending on the exterior brightness.

The flashing function is only possible with the sensor activated.

When the command to switch off is given by the sensor, the main beam headlamps are deactivated and then the side lights about 10 seconds later.

If a fault is detected with the dusk sensor, the "general failure" warning light is turned on and the information is shown simultaneously on the display.

The follow me home function allows the dipped headlights and the side lights to remain on even after the engine has been switched off (key in OFF position or extracted) for a period of 30 seconds or multiples thereof. The side lights warning light in the instrument panel signals that the lights have remained on. It is turned on using the lever in the same way as for activating the flasher within 2 minutes of the ignition being switched OFF: each time the lever is operated the length of time the lights remain on is increased by 30 seconds, up to a maximum of 210 seconds. Turning the key to the ON position or keeping the flasher lever pulled for more than 2 seconds eliminates the function.

In addition, at the Key-OFF the "Exterior courtesy lights" function turns on the dipped headlamps for a limited time when the doors or the tailgate is unlocked using the remote control.

The "Exterior courtesy lights" function can be activated or deactivated using the setup menu in the instrument panel.

There is a single (earth) signal sent by the steering column switch unit H005 to the Body Computer M001 that manages both the side lights and the dipped headlamps: from pin 3 of H005 to pin 38 of connector D of M001; the signal sent is coded by means of resistive dividers so that multiple information can be sent by the steering column switch unit to the Body Computer via a single connection.

The reference earth reaches pin 10 of H005 from pin 34 of connector D of M001.

The Body Computer M001 - connector A - receives a direct powr supply from the battery through the line protected by maxi fuse F01 of the engine compartment junction unit B001.

The Body Computer M001 receives an ignition-controlled (INT) power supply at pin 11 of connector E, whilst the ignition-controlled (INT/A) signal reaches pin 1 of connector E.

Pin 9 of connector E of M001 provides the Body Computer with a reference earth.

The Body Computer M001 controls the power supply for the dipped beams in the headlamps F010 (left) and F011 (right) from pins 10 and 27 of connector C of M001.

Each circuit is protected by a fuse in control unit M001: F13 for the left headlamp and F12 for the right.

The Body Computer M001 is connected via the CAN line to the instrument panel E050 to manage the dipped headlamps warning light and, if the dusk sensor fails, the dedicated signal.

The dipped headlamps lights are even activated if the dusk sensor is present in the rear view mirror P065 (A-BUS signal from pin 48 of connector F of M001).

The dusk sensor located in P065 is supplied by the INT line protected by fuse F49 of M001.