System Lock

System Lock

The system lock contains the following components
- Mechanical safety rotary latch
- Door contact
- Central locking drive
- Lock switch (front doors only)

Electrical components

Switches
The switches are designed as contactless switches with Hall-effect elements. All switches feature a common ground (terminal 31) connection.
- Door contact
The position of the rotary latch detected by a switch in order to determine the door position (open or closed).
- Door lock switch
The door lock switches determine the position of the lock cylinder (locked or unlocked)

Drives
The central locking drives are linked to the lock mechanism. The following settings are possible:
- Unlocked:
In this position, the rotary latch can be opened both via the inner door handle as well as the outer door handle. The locking button is up.

- Locked:
In this position, the rotary latch can be opened only via the inner door handle; the locking button is down.

After the inner door handle is pulled the first time, the locking button is pushed up and the rotary latch unlocks. The rotary latch opens the second time the inner door handle is pulled.

This setting can be achieved both electrically (via the ZV drive) or manually by pressing the locking button.

- Armed:
The rotary latch cannot be opened in this position. The inner and outer door handles as well as the locking button are mechanically uncoupled. This setting can only be achieved electrically with the central locking drives.

The general module is equipped with a repeat inhibit function in order to protect the drives from thermal overload as the result of frequent use.

Mechanical components

Door lock
Only the front doors are equipped with door locks. The door lock on the front passenger's door is also dispensed with if the vehicle is equipped with remote control.

The door can be locked and unlocked mechanically via the door lock. Mechanical unlocking is also possible when the central locking is in armed status.

Child safety lock
The system locks of the rear doors are equipped with a mechanical child safety lock. The doors cannot be opened from the inside when the child safety lock is engaged.

Lockout protector
A mechanical lockout protector which prevents the door locking with the rotary latch open is integrated in the system lock on the driver's door.