Unlock with remote control key, function - GF80.20-P-3006T

MODEL 211.0

Fig 1: Unlock With Remote Control Key Function Diagram (Selective)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Unlock "Selective"

Fig 2: Unlock With Remote Control Key Function Diagram (Global)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

"Global" unlocking

Remote control key (A8/1) set to "selective" unlocking

When the button "Unlock vehicle" is actuated once, the remote control key (A8/1) transmits a signal to the corresponding receiver in the vehicle via radio and infrared signals. They receive the signal and relay it to the EIS control module (N73) via the CAN class B bus.

The electronic ignition switch control module (N73) checks the access authorization. If the access authorization is valid, the EIS control module (N73) transmits the command for selective unlocking to the left front door control module (N69/1) and right front door control module (N69/2) and the rear SAM control module with fuse and relay module (N10/2) via the passenger compartment CAN bus. These then start the unlocking operation for the door lock and fuel filler flap depending on the setting for selective unlocking. If another request for unlocking is received, the vehicle is unlocked globally.

Remote control key (A8/1) set to "global" unlocking

When the button "Unlock vehicle" is actuated once, the remote control key (A8/1) transmits a signal to the corresponding receiver in the vehicle via radio and infrared signals. If the access authorization is valid, the EIS control module (N73) transmits the command for "global" to the left front door control module (N69/1), right front door control module (N69/2), left rear door control module (N69/3), right rear door control module (N69/4) and to the rear SAM control module with fuse and relay module (N10/2) via the passenger compartment CAN bus.

These activate locking of the door locks, the fuel filler flap and the trunk lid.

If the vehicle is unlocked globally or selectively with the remote control key (A8/1), the interior switches are activated.

Remote control key purpose/design/function	GF80.57-P-4101T
Electronic ignition switch control module, location/purpose	GF80.57-P-4120T
Rear SAM control module with fuse and relay module, location/purpose	GF54.21-P-4130T
Front door control module, driver, location/purpose	GF72.29-P-4115T
Front door control module, passenger, location/purpose	GF72.29-P-4116T
Rear door control module, location/purpose/function	GF72.29-P-4117T