GF80.20-P-2002TX Operate Central Locking With Transmitter Key, Function

GF80.20-P-2002TX Operate Central Locking With Transmitter Key, Function

Component Identification:

Preset "Selective" or "Global"
Depending on the setting on the transmitter key, the vehicle is unlocked globally or selectively when the "Unlock" button in the transmitter key is pressed.
In each case, switchover is accomplished when the "Unlock" and "Lock" button on the transmitter key are pressed simultaneously for approx. 5 s

Globally unlocking:
The entire vehicle is unlocked (doors, trunk lid and fuel filler flap)

Selectively unlocking:
Only the driver's door and the fuel filler flap are unlocked The entire vehicle is unlocked the next time the "Unlock" button is actuated.

Function sequence for locking or unlocking
When the "Lock or unlock" button on the transmitter key it pressed it transmits a radio signal to the left antenna amplifier module.

This signal is relayed to the EIS control module via the rear SAM control module.
Parallel to the radio signal an infrared signal is transmitted to the left front IR receiver (precise aiming required). This signal is read in by the left front door control module and transmitted to the EIS control module via CAN-B.
In both cases the EIS control module checks the access authorization of the transmitter key.
If the access authorization is valid, the EIS control module transmits the "Locking or unlocking" command to the control modules and the rear SAM control module via CAN-B bus. They then actuate the corresponding CL motors.
The opening request of the exterior actuation trunk lid switch is disabled or enabled by the rear SAM control module When unlocking. the interior lighting is switched on by the overhead control panel control module.

If the driver's door is opened during locking, the driver's door is not locked An open passenger door is locked.

Function sequence for remote trunk lid release (RTR)
When the "Trunk lid remote release" transmitter button is pressed, the transmitter key sends a radio signal to the left antenna amplifier module.
This signal is relayed to the EIS control module via the rear SAM control module.
Parallel to the radio signal an infrared signal is transmitted to the left front IR receiver (precise aiming required).
This signal is read in by the left front door control module and transmitted to the EIS control module. In both cases the EIS control module checks the access authorization of the transmitter key.
If the access authorization is valid, the EIS control module transmits the "Open trunk lid" command to the rear SAM control module. It actuates the CL trunk lid motor in the trunk lid lock to unlock the trunk lid electrically.

With the RTR, via the transmitter key, the central locking (CL) remains inactive (no unlocking)The interior central locking and ATA function display switch is not enabled.

Once the trunk lid has been closed, it can only be opened by again operating the transmitter key.

Visual feedback signal
After locking or unlocking an optical feedback is accomplished via the turn signal lamps. The function is controlled by the rear SAM control module as Blinkmaster.
Actuation of the individual turn signal lamps is accomplished by the driver-side SAM control module, passenger-side SAM control module, rear SAM control module and front door control modules
^ Flashing 3 times when locking (doors and trunk lid must be closed)
^ Flashing once when unlocking

Interior actuation of CL:
After locking the CL, the interior central locking switch is deactivated If the transmitter key is inserted into the EIS control module, the interior central locking switch is reactivated and the fuel filler flap automatically unlocked.