The simultaneous operation of the door locks takes place via:- the buttons in the control panel on the tunnel;- the remote control;The component for recognizing the door locking system is the T.E.G. (Transmitter for Entry and Go) which acts as a radiofrequency remote control and allows the locking/unlocking of the doors or the release of the boot at a distance.The T.E.G. has three buttons that allow the operation of the central locking system: one button for unlocking the doors, one for locking the doors and one for releasing the boot.The door locking system has a dead lock function which allows the mechanical disconection of the door interior opening handles and the safety knob so that the door cannot be opened from the inside after the glass has been broken (improved theft protection).The dead lock function is switched on using the remote control at the time when the doors are locked by pressing the locking button a second time within one second of the first time it is pressed and this is signalled by two flashes of the direction indicators and the red LED in the door panel for half a second.In general, the door unlocking/locking management strategy is carried out by the NBC, whilst the NPP NPG and NVB nodes activate the motors for the locks in accordance with the commands transmitted via the B-CAN from the NBC.There are two buttons in the control panel on the tunnel that allow the central locking and unlocking of all the doors. If the doors have been locked using the remote control, pressing the unlocking button does not produce any request and the button is disabled.The status of the inertia switch is acquired directly by the NBC therefore it controls the unlocking of the doors in emergencies (accident). In addition, the signal coming from the inertia switch only causes the unlocking of the boot if the boot is subject to the doors: if the boot is set to always locked, this signal does not produce any action.There is a red LED on the vehicle on the driver''s door panel which signals the locking of the locks, the engagement of the dead lock and a deterrent function. The deterrence signalling is only activated if a door locking command has been successful.With the vehicle locked, pulling the interior handle produces the mechanical unlocking of the door involved, local to the individual door (not detected by the system).The NBC having detected the transition of the door from closed to open, alters the logic status transmitted on the network and may or may not command the unlocking of the doors.More specifically:- opening via the rear handle: the status of the door involved is aligned;- opening via the driver''s handle: according to the vehicle set-up, the unlocking of the doors is commanded;- opening via the passenger handle: the central unlocking is commanded.In the last two cases the boot is also unlocked (if it has not been set in an independent mode).It is possible, using the NQS/NIT set-up menu, to enable or disable the automatic locking of the doors when a pre-set speed is exceeded.If the function is enabled, the NBC compares the vehicle speed with the level of 20 Km/h and requests the locking of the doors when this speed is exceeded. The doors are only locked after all the doors are closed and after the first time the level of 20 Km/h is exceeded.If the doors are locked by this function, the user can unlock the doors using the central unlocking button.If the speed drops below 20 km/h with the doors locked, the doors are not released.If, with the vehicle locked, any one of the doors is opened and then closed (mechanically unlocked), when the speed level is next exceeded, the NBC will request the locking once again.The NQS acquires the door, boot, bonnet (only if the alarm is fitted) status and vehicle speed signals from the B-CAN.After a key on, if the following conditions are verified:- a door or the boot or the bonnet is open;- the speed > 4 Km/h.The NQS emits a cycle of acoustic signals for a period of 5 seconds and (if the display permits) the relevant message is shown (for example, right front door open).The cycle of acoustic signals is only interrupted if at least one of the following conditions takes place:- all the doors, the boot or the bonnet are closed;- the vehicle speed < 4 Km/h.