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Multifunction steering wheel, function - GF82.90-P-0001SX

MODEL 221 up to model year 08/YoM 07 

Illustrated: 

Fig 1: Identifying Multifunction Steering Wheel Components
G10128828Courtesy of MERCEDES-BENZ USA

Illustrated: 

Fig 2: Identifying Left And Right Steering Wheel Gear Shifter
G10128829Courtesy of MERCEDES-BENZ USA

Networking of components 

Fig 3: Steering Column Module Communication Diagram
G10128830Courtesy of MERCEDES-BENZ USA

Functions 

The multifunction steering wheel (MFL), in combination with the multifunction display (A1p13) of the instrument cluster (A1), serves to enhance active driving safety in road traffic. The driver can concentrate on the traffic without distraction when controlling and operating various vehicle components. The MFL allows the driver to operate and call up the systems and their submenus: The number of menus is dependent on the vehicle equipment level, i.e.:

The selected system is displayed in the multifunction display of the instrument cluster.

The fanfare horns are operated via the impact plate of the multifunction steering wheel.

IMPORTANT When changing to another system, the start screen of the selected system is always displayed and not the submenu last selected in this system.

Left multifunction steering wheel button group 

The left multifunction steering wheel button group contains the system selection button (S110s3), OK button (S110s6) and the scroll forward/back button (S110s1). Each of the systems can be called with the system selection button. It is possible here to "scroll" forward and backward from system to system. It is also possible to "scroll" forward and backward with the scroll forward and backward button within a system, i.e. additional submenus can be called up. The OK button can be used to accept the selection.

Right multifunction steering wheel button group 

The right multifunction steering wheel button group contains the accept/terminate phone call button (S111s3), and the buttons + and - for setting of specific functions and volume control (S111s1). A telephone call can be accepted or terminated with the accept/terminate phone call button.

The buttons + and - for setting specific functions and volume control can be used to adjust the volume of the currently active system.

VCS [SBS] on button 

The VCS [SBS] on button can be used to activate the voice control system (VCS [SBS]). An acoustic signal is emitted after activation has taken place.

"Back" and SBS off button 

The "Back" and SBS off button is used to deactivate the voice control system.

Signal transmission 

The signals are read in via the steering LIN by the steering column module (N80) and transferred to the chassis CAN.

Steering wheel gear shift 

The following functions are possible using the left steering wheel gear shifter and right steering wheel gear shifter:

Transfer of shift signals 

The left steering wheel gear shifter and right steering wheel gear shifter are read in via the steering LIN by the steering column module. The steering column module transfers the "Upshift" or "Shift down" signal to the chassis CAN. The ETC [EGS] control unit (N15/3) actuates the gear change.

IMPORTANT Gear shifts which would lead to impermissibly high or low motor speeds are not carried out.

  Scanning of switch positions, function   GF82.90-P-3001SX