See also:

Secondary control
For mechanically locking and unlocking the doors in the event of a fault with the central locking system or a battery failure. ...

Remote control key
System which permits central unlocking or locking of the vehicle using the lock or from a distance. It is also used to locate and start the vehicle, as well as providing protection against theft. ...

Ventilation
Air intake The air circulating in the passenger compartment is filtered and originates either from the outside via the grille located at the base of the windscreen or from the inside in air rec ...