Lock with transmitter key, function - GF80.20-P-3005R

MODEL 230

Fig 1: Lock With Transmitter Key Function Chart

Courtesy of MERCEDES-BENZ USA

Function

When the "Lock vehicle" transmit button is pressed, the transmitter key sends a radio and infrared signal to the relevant receiver in the vehicle.

The radio signal is transmitted to the overhead control panel control unit via the right antenna amplifier module. It transmits it to the EIS control unit via CAN B bus.

The infrared signal is read by the IR receiver and is transmitted by the door control unit to the EIS control unit via CAN B bus. The EIS control unit checks the access authorization of the transmitter key. If the access authorization is valid, the EIS control unit transmits the "Lock" command to the pneumatic control unit via CAN B bus.

The pneumatic control unit actuates the pneumatic actuators to lock.

The following components are locked:

Doors
Fuel filler flap
Trunk lid
Stowage compartments (glove compartment, right and left rear box and center console stowage compartment).

Locking is indicated by all turn signal lamps flashing momentarily three times

The following interior switches are deactivated:

'Unlock CL [ZV]' interior switch (S6/5s2)
'Lock CL [ZV]' interior switch and ATA function indicator (S6/5s3)
Remote opening trunk lid switch (S15)

When the driver door is opened during locking with transmitter key, only the passenger door is locked, regardless of whether it is open or closed.

Auxiliary door lock (on vehicles)

The auxiliary door lock switches off the mechanical inner actuation so that it is no possible to open a door from the inside. This prevents breaking in into the vehicle by smashing in a window and opening a door from inside

The auxiliary door lock is activated when the interior protection is actuated and the vehicle is locked.

Antenna amplifier module, location/task/design/function	A2/65	GF82.62-P-3105R
Transmitter key, task/design/function	A8/1	GF80.57-P-4101R
Infrared receiver, location/task/design/function	A26/1, A26/2	GF80.20-P-4101R
Pneumatic control unit (combined), location/task/design	A37	GF80.20-P-4117R
Rear SAM control unit with fuse and relay module, location/task/design	N10/8	GF54.21-P-4112R
Left front door control unit, location/task/design	N69/1	GF72.29-P-4113R
Right front door control unit, location/task/design	N69/2	GF72.29-P-4114R
Upper control panel control unit, location/task/design/function	N70	GF82.20-P-4101R
Electronic ignition switch control unit, location/task/design	N73	GF80.57-P-4116R
Door contact switch, location/task/design/function	S17/3, S17/4	GF82.20-P-4102R
Trunk lid lock, location/task/design/function		GF80.20-P-4103R