GF80.20-P-4009RC Automatic Locking, Function

GF80.20-P-4009RC Automatic Locking, Function

Function requirements, general
^ Central locking (CL) unlocked and
^ Function activated via the instrument cluster (A1)

Automatic locking, general
The vehicle is automatically locked under certain conditions.

The automatic locking function comprises the following partial functions:
^ Function sequence for locking, depending on vehicle speed
^ Function sequence for automatic relocking

Function sequence for locking, depending on vehicle speed
The vehicle is locked depending on the vehicle speed:
- Vehicle speed v > 3 km/h
- Locking trunk lid

- Vehicle speed v > 15 km/h
- Additionally locking doors

The EIS control unit (N73) recognizes if the limit values are exceeded by evaluating the speed signals from the instrument cluster and transmits the command "Lock" to the:
- Rear SAM control unit with fuse and relay module (N10/2)
- Left door control unit (N69/1)
- Right door control unit (N69/2)

The they cause to lock the:
- Right door CL motor (M14/5)
- Left door CL motor (M14/6)

Moreover, opening of the trunk lid via the trunk lid external operation switch (S88/8) is inhibited by the rear SAM control unit.

The vehicle can be unlocked again by opening a door from the inside or with the inside CL open switch (N72/1s16).
The vehicle is returned to the initial state when one of the doors is opened or circuit 15 is switched on and off again.
If a door is opened while driving and then closed again, and the vehicle speed is above the limit for automatic locking, the door is locked again after it is closed.

Additional function requirements for automatic relocking
^ CL unlocked with transmitter key (A8/1)

Function sequence for automatic relocking
After the vehicle is unlocked with the transmitter key, a waiting time of t = 40 s starts.
After expiration of this waiting time, the vehicle is relocked if a door or the trunk lid has not been opened previously.
Visual feedback is not performed.

The anti-theft alarm (ATA) (on vehicles with code (551) Anti- theft alarm (ATA)) is also activated by the automatic relocking feature.