GF80.61-P-2008SX Locking/Unlocking, Function

GF80.61-P-2008SX Locking/Unlocking, Function
- with CODE (889) Keyless Go

Component Identification:

Unlocking/locking function via door handle

Function requirements
^ Valid transmitter key outside of vehicle (max. approx. distance to door handle 1 m)
^ Circuit 15C OFF

Function sequence for unlocking
(Explained on left front door on model 221 as an example)
The inner capacitive sensor in the left front Keyless Go sensor unit recognizes if a door handle is gripped and signals this to the Keyless Go control unit which transmits a wake-up signal to the transmitter key via the left rear door Keyless Go antenna.

Unlocking possibilities:
^ Gripping and pulling any door handle (global or selective opening)

Locking possibilities:
^ Touching door handle outer side or
^ Actuating following sensors on door handles:
- Left front comfort sensor (B67/1b1) (model 216) or Right front comfort sensor (B67/1b1) (model 221)
- Right comfort sensor (B67/2b1) (model 216) or Right front comfort sensor (B67/2b1) (model 221)
- Left rear comfort sensor (B67/3b1) (model 221)
- Right rear comfort sensor (B67/4b1) (model 221)

The transmitter key transmits its access authorization code and it position to the rear window antenna amplifier module, which relays it to the Keyless Go control unit. The access authorization code is transmitted to the EIS control unit via the interior CAN. If it is valid, the EIS control unit transmits the command "Unlock CL" to the door control units and to the rear SAM control unit. They actuate the corresponding motors in the central locking (CL) to unlock. If a door handle is pulled within 0.5 s after the CL is unlocked, the Hall sensor in the door handle senses this and sends a corresponding signal to the Keyless Go control unit, which then actuates the left front opening assist motor. When the left front opening assist motor is actuated, the rotary tumbler "Opens" and the door pops open.

Function sequence for locking
(Explained on left front door on model 221 as an example)
The outer capacitive sensor in the left front Keyless Go sensor unit recognizes if a door handle is gripped from the outside. Further sequence same as when unlocking, however, the CL motors are actuated to lock.

The convenience closing function via Keyless Go (KG) is described in the "Convenience feature function".

Switching over from "global" to "selective" unlocking.
If the unlock and lock buttons on the transmitter key are pressed simultaneously for 5 seconds, a change between the "global" and "selective" functions takes place. The indicator lamp on the transmitter key comes on to confirm this change.

^ Global unlocking
The entire vehicle can be unlocked by gripping and pulling a door handle.

^ Selective unlocking (only possible on driver door handle)
Only the driver door and the fuel filler flap can be unlocked by gripping and pulling the driver door handle. If, however, the transmitter key is set to selective unlocking and the triggering location for unlocking is not the driver door handle, the vehicle is unlocked globally.

Unlocking function via trunk lid external operation switch

Function sequence
The rear SAM control unit recognizes when the trunk lid external operation switch is actuated and signals it to the KEYLESS-GO control unit via interior CAN.
It transmits a wake-up signal to the transmitter key via the left trunk Keyless Go antenna.

The transmitter key transmits its access authorization code and its position to the rear window antenna amplifier module, which relays to the Keyless Go control unit.
The access authorization code is transmitted to the EIS control unit via the interior CAN. If it is valid, the EIS control unit sends the command "Unlock CL" to the rear SAM control unit, which actuates the trunk lid CL motor and opens the rotary tumbler.

On vehicles with code (881) Remote trunk closing (RTC) the automatic mode is stopped when the trunk lid external operation switch is actuated again; if actuated anew, the procedure is continued.

Locking function via trunk lid KG button (Model 221 up to 30.11.06)

Function requirements
^ Valid transmitter key outside of vehicle (max. approx. distance to trunk lid 1 m)
^ Circuit 15C OFF
^ Doors closed

Function sequence
If the trunk lid Keyless Go button is pressed, this is recognized by the rear SAM control unit and relayed to the Keyless Go control unit. It transmits a wake-up signal to the transmitter key via the left trunk Keyless Go antenna.

The transmitter key transmits its access authorization code and its position to the rear window antenna amplifier module, which relays it to the Keyless Go control unit. The access authorization code is transmitted to the EIS control unit via the interior CAN.

If it is valid, the EIS control unit transmits the command "Lock CL" to the door control units and the rear SAM control unit. They then actuate the corresponding CL motors to lock.
The function is accomplished regardless of whether the trunk lid is open or closed.

Locking function via RTC button (with code (881) Remote trunk closing (RTC))
If the TLC button is actuated when the trunk lid is open, a signal is transmitted from the TLC control unit to the KEYLESS-GO control unit via the interior CAN.
It transmits a wake-up signal to the transmitter key via the left trunk Keyless Go antenna.
The transmitter key transmits its access authorization code and its position to the rear window antenna amplifier module, which relays it to the Keyless Go control unit.
The access authorization code is transmitted to the EIS control unit via the interior CAN. If it is valid, the EIS control unit sends the command to lock the vehicle and the command to release the trunk lid lock. The TLC control unit closes the trunk lid.