The front courtesy light includes three lamps with three control switches: it is possible to switch on the corresponding spot light using the outside buttons; the centre button switches the centre light on and off, which is also turned on with a timed delay as described below.There are two bulbs in the rear courtesy light which can be switched on or off using the relevant button or through a delay timer as described below.The courtesy light lighting delay is based on a logic managed by the Body Computer whilst the rear courtesy light is operated by the door control unit in accordance with a logic transmitted by the Body Computer via the CAN:- Pressing the button in the front courtesy light operates both the front courtesy light and the rear courtesy light: in particular, with the courtesy lights off, both are switched on and, with the courtesy lights on, both are switched off.- When any of the doors is opened both the front and rear courtesy lights come on and there is a timed delay of 3 minutes which is reactivated each time a door is opened.- When, on the other hand, the button in the front courtesy light is pressed during the timed delay, the courtesy lights are switched off and the timed delay in progress is zeroed.- When all the doors are closed at the key-off (TEG extrated), the previous timed delay is zeroed and a 10 second timed delay is activated; (this delay is interrupted in the case of a key-on (insertion of the TEG).- When all the doors are closed at the key-on (insertion of the TEG) the courtesy lights are immediately switched off.- When the TEG is extracted both the front courtesy light and the rear courtesy light come on and a timed delay of 10 seconds is activated.- Both the front and rear courtesy lights go out on the "door locking" command.- Both the front courtesy light and the rear courtesy light come on on the "door unlocking" command and a timed delay of 10 seconds is activated.- If the inertia switch is operated the courtesy lights come on for 15 minutes.The switching on or off takes place gradually (dimmer) with the cycle lasting 2 seconds.If one or more doors are open, this is shown on the instrument panel display; the warning light remain on until all the vehicle doors and boot lid are properly shut. If a given speed limit is exceeded, this is also signalled by means of a buzzer.