The front and side direction indicators are traditional with an incandescent bulb.

The rear side lights are located in the rear side light clusters and have LED circuits controlled by dedicated internal electronics.

The left and right direction indicators are switched on by raising or lowering the special stalk lever on the left of the steering wheel interface; the function is activated with the key in the ON position.

The hazard warning lights (left and right direction indicators operated simultaneously) are activated via a button in the centre of the dashboard and all the direction indicators are activated at the same time.

This function is always active for safety reasons.

The engagement of the direction indicators / hazard warning lights is managed by the Body Computer which also controls the flashing frequency which is sent to the other nodes via the CAN serial network. In this way the two direction indicator warning lights in the instrument panel are also switched on; in addition, the system provides a low frequency acoustic signal in conjunction with the activation of the lights.

The direction indicators check function checks that the lights are working properly: the following are checked for each of the two circuits (right side branch and vehicle left side):

- open circuit or missing bulb

- short circuit to earth (bulb s.c. or wiring s.c. to earth)

- short circuit to battery voltage (wiring short circuited to Vbatt)

When one of the situations described above is verified, the Body Computer makes the failure status available to the CAN: in the instrument panel: a special failure warning light comes on and, at the same time, the information is shown in the display only at the key on.

In addition, at the same time as a failure warning light comes on, the flashing frequency of the visual indication in the display and the acoustic signal increases; the flashing frequency of the exterior lights, on the other hand, remains unchanged.

the direction indicators are also used to signal that the commands sent by the remote control have been received and/or to signal a manoeuvre not carried out by the passenger compartment access control system.   See E3040 CENTRAL LOCKING

There is a single (earth) signal sent by the steering column switch unit H005 to the Body Computer M001 that manages the left and right direction indicators: from pin 1 of H005 to pin 51 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 (earth) signal for activating the hazard warning lights reaches pin 7 of connector D of M001 from the control button in unit H90, pin 3; pin 6 of H90 receives the reference earth from pin 49 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 power supply (INT) at pin 11 of connector E.

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

The Body Computer M001 controls the side direction indicators F020 (left) and F021 (right) from pins 11 and 9 of connector B, the front direction indicators F010 (left) and F011 (right) from pins 10 and 8 of connector and, lastly, the rear direction indicators F030 (left) and F031 (right) from pins 1 and 3 of connector F.

The Body Computer M001 is connected, via the CAN line, to the instrument panel E050 to manage the direction indicator warning lights, the buzzer and, if there is a problem in the circuit, the lights failure warning light.