Locks: Description and Operation
GF80.45-P-0003CE Convenience Feature (CF), Function
MODEL 204.0 /2 as of model year 2009 /YoM 08
MODEL 204.3
MODEL 204.9
A8/1 Transmitter key
A17/1 Left front door KEYLESS-GO door handle (with code (889) Keyless Go)
A17/2 Right front door KEYLESS-GO door handle (with code (889) Keyless Go)
A17/3 Left rear KEYLESS-GO door handle (on model 204.0/2/9 with code (889) KEYLESS-GO)
A17/4 Right rear KEYLESS-GO door handle (on model 204.0/2/9 with code (889) KEYLESS-GO)
A26/1 Driver-side front door infrared remote control receiver
A98 Panoramic sliding sunroof control module (with code (413) Panoramic glass sunroof with top sliding sunroof)
A98m1 Panoramic sliding sunroof motor (with code (413) Panoramic glass sunroof with top sliding sunroof)
A98n1 Panoramic sliding sunroof control unit (with code (413) Panoramic glass sunroof with top sliding sunroof)
M10/3 Left front door power window motor
M10/4 Right front door power window motor
M10/5 Left power window motor (on model 204.0/2/9)
M10/6 Right rear power window motor (on model 204.0/2/9)
M12 Tilting/sliding roof drive unit (with code (414) Electric glass tilting/ sliding roof)
M12m1 Tilting/sliding roof motor (with code (414) Electric glass tilting/sliding roof)
M12/5 Panoramic sliding sunroof roller sun blind drive unit (with code (413) Panoramic glass sunroof with top sliding sunroof)
M12/5m1 Panoramic sliding sunroof roller sun blind motor (with code (413) Panoramic glass sunroof with top sliding roof)
N22/7 Automatic air conditioning control and operating unit
N22/7s2 Air recirculation mode button
N69/1 Left front door control unit
N69/2 Right front door control unit
N69/3 Left rear door control unit (on model 204.0/2/9)
N69/4 Right rear door control unit (on model 204.0/2/9)
N69/5 KEYLESS-GO control unit (with code (889) Keyless-Go)
N70 Overhead control panel control unit (with code (414) Power glass tilting/sliding sunroof)
N73 Electronic ignition switch control unit
CAN B Interior CAN
CAN E Chassis CAN
Function requirements, general
^ Power window normalized
^ Tilting/sliding roof (on model 204.0/2 with code (414) Electric glass tilting/sliding roof) normalized
^ Panoramic sliding roof (with code (413) Panoramic glass sunroof with top sliding roof) normalized
Convenience feature, general
The CF function allows the side windows and tilting/sliding roof or panoramic sliding sunroof to be opened and closed centrally.
The CF function comprises the following partial functions:
^ Function sequence for convenience feature (opening/ closing) via transmitter key
^ Function sequence for convenience feature (opening/ closing) via air recirculation button (without code (494) USA version)
^ Function sequence for convenience feature (locking) via KEYLESS-GO (with code (889) KEYLESS-GO)
Additional function prerequisites for convenience feature via transmitter key
^ Circuit 15C OFF
^ Doors closed
Function sequence for convenience feature via transmitter key
When actuating and holding down the "Lock" or "Unlock"button on the transmitter key, it transmits an infrared signal to the infrared remote control receiver in the front door on the driver side (precise aiming required).
The left rear door control unit reads in this signal and transmits it via the interior CAN to the electronic ignition lock control unit.
The electronic ignition lock control unit checks the access authorization of the transmitter key and enables the required function.
The left front door control unit transmits the request "Comfort opening" or "Comfort closing" to the following control units via the interior CAN after enabling:
- Right front door control unit
- Left rear door control unit (on model 204.0/2/9)
- Right rear door control unit (on model 204.0/2/9)
- Overhead control panel control unit (on model 204.0/2 with code (414) Electric glass tilting/sliding roof)
- Panoramic sliding sunroof control unit in panoramic sliding sunroof control module (with code (413) Panoramic glass sunroof with top sliding sunroof)
Then the control units actuate the following components, to open or close the side windows.
- Left front door power window motor, actuated by left front door control unit
- Right front door power window motor, actuated by right front door control unit
- Left rear door power window motor (on model 204.0/2/9), actuated by left rear door control unit
- Right rear door power window motor (on model 204.0/2/9), actuated by right rear door control unit
On model 204.0/2 with code (414) Electric glass tilting/sliding roof, the overhead control panel control unit actuates the tilting/sliding roof motor in the tilting/sliding roof control unit, to open or close the tilting/sliding roof according to the request.
On vehicles with code (413) Panoramic glass sunroof with top sliding roof, the panoramic sliding roof control unit actuates the panoramic sliding sunroof roller sun blind motor in the panoramic sliding roof roller sun blind drive unit and then the panoramic sliding roof motor to open or close the roller sun blinds and the panoramic sliding roof according to the request.
Where applicable, the sun blinds are opened before opening the panoramic sliding sunroof.
The panoramic sliding roof is opened only upon a new request.
During comfort closing, the roller sun blinds are closed only after the panoramic sliding roof is closed and after a new request.
Additional function sequence for convenience feature via air recirculation function (without code (494) USA version)
^ Circuit 15 ON
The electronic ignition lock control unit transmits the status of terminal 15 to the automatic air conditioning control and operating unit via the interior CAN.
Function sequence for convenience feature via air recirculation function (without code (494) USA version)
When the air recirculation button on the automatic air conditioning operation and control unit is pressed for longer than t = 2 s, the convenience feature is started.
When the air recirculation mode is switched on, the comfort closing function is activated and when switched off, the comfort opening function is activated.
The automatic air conditioning control and operating unit reads in the status of the air recirculation mode button and sends it to the following control units via the interior CAN:
- Left front door control unit
- Right front door control unit
- Left rear door control unit (on model 204.0/2/9)
- Right rear door control unit (on model 204.0/2/9)
- Overhead control panel control unit or panoramic sliding roof control unit
Then the control units actuate the following components, to open or close the side windows.
- Left front door power window motor, actuated by left front door control unit
- Right front door power window motor, actuated by right front door control unit
- Left rear door power window motor(on model 204.0/2/9) actuated by left rear door control unit
- Right rear door power window motor (on model 204.0/2/9) actuated by right rear door control unit
On model 204.0/2 with code (414) Electric glass tilting/sliding roof the overhead control panel control unit actuates the tilting/sliding roof motor to open or close the tilting/sliding roof according to the request.
On vehicles with code (413) Panoramic glass sunroof with top sliding sunroof, the panoramic sliding roof control module actuates the panoramic sliding sunroof motor and the panoramic sliding sunroof motor to close or open the panoramic sliding roof and the roller sun blind according to the request.
Where applicable, the sun blinds are opened before opening the panoramic sliding sunroof.
The panoramic sliding roof is opened only upon a new request.
During comfort closing, the roller sun blinds are closed only after the panoramic sliding roof is closed and after a new request.
During comfort closing with the air recirculation function, the current positions of the side windows, tilting/sliding roof or panoramic roof are stored. During the next comfort opening procedure, these are all moved back to the positions stored previously. The comfort opening function is performed only when comfort closing was accomplished previously.
Detailed information on position sensing for power window is given in the separate function description "Power windows (PW), function".
Information on position sensing of sliding roof (with code (414) Electric glass tilting/sliding roof) is given in the separate function description "Electric tilting/sliding roof (SR) function" in detail.
Information on position sensing of panoramic glass roof (with code (413) Panoramic glass sunroof with top sliding roof) is given in the separate function description "Electric panoramic sliding roof, function" in detail.
Additional function prerequisites for convenience feature via Keyless-Go (with code (889) Keyless-Go)
^ Circuit 15 OFF
^ Transmitter key located outside of vehicle in vicinity (s = 1 m)
^ Doors closed and vehicle locked
Function sequence for convenience feature via Keyless-Go (with code (889) Keyless-Go)
When the comfort sensor on a KEYLESS-GO door handle is actuated, the comfort closing function is requested.
The KEYLESS-GO control unit reads in the status of the comfort sensor on a KEYLESS-GO door handle and sends the "Confront closing" request to the following control units via the interior CAN:
- Left front door control unit
- Right front door control unit
- Left rear door control unit (on model 204.0/2/9)
- Right rear door control unit (on model 204.0/2/9)
- Overhead control panel control unit or panoramic sliding roof control unit
Simultaneously, the electronic ignition lock control unit checks the access authorization of the transmitter key and enables the requested function.
Detailed information on position determination and checking access authorization of the transmitter key is given in the separate partial function " KEYLESS-GO function".
The corresponding control units then actuate the following components to close the side windows:
- Left front door power window motor, actuated by left front door control unit
- Right front door power window motor, actuated by right front door control unit
- Left rear door power window motor(on model 204.0/2/9) actuated by left rear door control unit
- Right rear door power window motor (on model 204.0/2/9) actuated by right rear door control unit
On model 204.0/2 with code (414) Electric glass tilting/sliding roof the overhead control panel control unit actuates the tilting/sliding roof motor () to open or close the tilting/sliding roof.
On vehicles with code (413) Panoramic glass sunroof with top sliding sunroof, the panoramic sliding roof control unit actuates the panoramic sliding sunroof drive unit and then the panoramic sliding sunroof motor to close the panoramic sliding roof and the roller sun blind according to the request.
During comfort closing, the roller sun blinds are closed only after the panoramic sliding roof is closed and after a new request.
Convenience closing is interrupted in the following cases:
- when another comfort sensor is touched, - when the comfort sensor is no longer touched, - After max. t = 90 s
- If another central locking command is present
If during comfort closed or max. t = 2 s after the same KEYLESS GO door handle is pulled, the emergency opening function is activated. In this case, the side windows, the tilting/sliding roof or the panoramic sliding roof are actuated in the opening direction.
Actuation is performed for min. t = 2 s or as long as the KEYLESS-GO door handle is pulled, max. for t = 90 s.
