LEMON Manuals: Even more car manuals for everyone
Home >> Mercedes Benz >> 2011 >> C350 >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Anti-Theft/Central Locking System - C63/C350 (204) - 2 Of 2 >> Basic Knowledge >> Convenience feature (CF), function (MODEL 204.0/2 as of model year 2009/YoM 08, MODEL 204.3, MODEL 204.9) - 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) - GF80.45-P-0003CE

MODEL 204.0/2 as of model year 2009/YoM 08 

MODEL 204.3 

MODEL 204.9 

Fig 1: Convenience Feature Function Diagram
G07531882Courtesy of MERCEDES-BENZ USA

Function requirements, general 

Convenience feature, general 

The KFB 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:

IMPORTANT Convenience opening via Keyless Go is not possible.

Additional function prerequisites for convenience feature via transmitter key 

Function sequence for convenience feature via transmitter key 

When actuating and holding down the lock or unlock button the transmitter key, it transmits an infrared signal to the IR receiver in the front door on the driver side (precise aiming required). The left front door control unit reads in this signal and sends it to the electronic ignition lock control unit via the interior CAN. The electronic ignition lock control unit checks the access authorization of the transmitter key and enables the required function.

After enabling, the left front door control unit transmits the signal "Comfort opening" or "Comfort closing" to the following control units via the interior CAN according to the request:

The corresponding control units then actuate the following components to open or close the side windows, depending on the request:

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 (M12m1) 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 unit actuates the panoramic sliding sunroof drive unit and the panoramic sliding A98m1 sunroof motor to close or open the panoramic sliding roof and the roller sun blind according to the request.

IMPORTANT Where applicable, the sun blinds are opened before opening the panoramic sliding sunroof.

The panoramic sliding sunroof is opened only when requested again. With comfort closing, the roller sun blinds are closed after the panoramic sliding sunroof is closed and a new request is present. For this purpose the panoramic sliding roof control unit actuates the panoramic sliding roof roller sun blind drive unit.

Additional function sequence for convenience feature via air recirculation function (without code (494) USA version) 

Function sequence for convenience feature via air recirculation function (without code (494) USA version) 

When actuating the air recirculation mode (N22/7s2) on the automatic air conditioning control and operating unit for longer than t = 2 s, the function comfort opening or comfort closing is requested. 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:

The corresponding control units then actuate the following components to open or close the side windows, depending on the request:

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 unit actuates the panoramic sliding sunroof drive unit and the panoramic sliding sunroof motor to close or open the panoramic sliding roof and the roller sun blind according to the request.

IMPORTANT Where applicable, the sun blinds are opened before opening the panoramic sliding sunroof. The panoramic sliding sunroof is opened only when requested again. With comfort closing, the roller sun blinds are closed after the panoramic sliding sunroof is closed and a new request is present.

For this purpose the panoramic sliding roof control unit actuates the panoramic sliding roof roller sun blind drive unit.

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.

Additional function prerequisites for convenience feature via Keyless-Go (with code (889) Keyless-Go) 

Doors closed and vehicle locked

Function sequence for convenience feature via Keyless-Go (with code (889) Keyless-Go) 

When the comfort sensor on the KEYLESS GO door handle is actuated, the comfort closing function is requested.

The KEYLESS-GO control unit reads in the status of the KEYLESS-GO door handle actuated and sends the "Comfort closing" request to the following control units via the interior CAN:

Simultaneously, the electronic ignition lock control unit checks the access authorization of the transmitter key and enables the requested function.

The corresponding control units then actuate the following components to close the side windows:

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 the panoramic sliding sunroof motor to close or open the panoramic sliding roof and the roller sun blind according to the request.

IMPORTANT With comfort closing, the roller sun blinds are closed after the panoramic sliding sunroof is closed and a new request is present. For this purpose the panoramic sliding roof control unit actuates the panoramic sliding roof roller sun blind drive unit.

Convenience closing is interrupted in the following cases:

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.

REFER TO SYSTEM WIRING DIAGRAMS Electrical function schematic for convenience opening/closing with transmitter key   PE80.45-P-2052-97FAB 
REFER TO SYSTEM WIRING DIAGRAMS Electrical function schematic for convenience opening/closing via recirculated air function   PE80.45-P-2053-97FAB 
REFER TO SYSTEM WIRING DIAGRAMS Electrical function schematic for convenience closing via keyless go With CODE (889) Keyless Go PE80.45-P-2054-97FAB 
  Overview of system components for theft protection and locking   GF80.00-P-9999CE 
scientia non olet · About LEMON Manuals