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Multifunction Steering Wheel, Basic Function - GF82.90-P-2005A

Model all (CAR) 

Task 

The multifunction steering wheel is a component of the vehicle's steering. It is used primarily to change the direction of the vehicle.

Structure 

Various controls are located on the multifunction steering wheel with which a variety of functions can be operated.

A steering wheel electronics system is integrated into the multifunction steering wheel. This is connected to the network architecture of the vehicle. The steering wheel electronics digitalizes the control signals from the multifunction steering wheel controls and provides them to other vehicle systems.

On vehicles equipped with a steering wheel heater the steering wheel rim can be heated.

For vehicles with capacitive steering wheel, a hand detection system is integrated.

Fig 1: Instrument Cluster/Head Unit Multifunction Steering Wheel Button Control Group Components Location - Model 205
G12941417Courtesy of MERCEDES-BENZ USA

Instrument cluster multifunction steering wheel button group controls (S163/1) 

G12941418Courtesy of MERCEDES-BENZ USA
Item Function Designation Equipment variant
1 Downshift button (on-board computer) "Back" button (S163/1s13) -
2 Touch control (on-board computer) Instrument cluster finger navigation pad (S163/1s10) -
3 Main menu button (multimedia system) Home button (S163/1s21) Vehicles without DISTRONIC PLUS or without Driving Assistance Package
4 Downshift/Home button (on-board computer) Home and Back button (S163/1s14) Vehicles with DISTRONIC PLUS or with Driving Assistance Package
5 Change between limiter and Distance Assist Limiter and Distance Assist button (S163/1s15) Vehicles with DISTRONIC PLUS or with Driving Assistance Package
6 Activate cruise control or limiter and call up stored speed Resume cruise control switch (S163/1s19) Vehicles without automatic speed control
  Accept a detected speed Resume cruise control switch (S163/1s19) Vehicles with automatic speed control
7 Activate cruise control or limiter/increase speed Cruise control switch (S163/1s18) -
8 Select cruise control Cruise control and limiter switch (S163/1s20) Vehicles without DISTRONIC PLUS or without Driving Assistance Package
9 Increase specified distance to vehicle in front Distance Assist switch (S163/1s17) Vehicles with DISTRONIC PLUS or with Driving Assistance Package
10 Deactivate cruise control/limiter or Distance Assist Resume cruise control switch (S163/1s19) -
11 Activate cruise control or limiter/reduce speed Cruise control switch (S163/1s18) -
12 Select variable limiter Cruise control and limiter switch (S163/1s20) Vehicles without DISTRONIC PLUS or without Driving Assistance Package
13 Reduce specified distance to vehicle in front Distance Assist switch (S163/1s17) Vehicles with DISTRONIC PLUS or with Driving Assistance Package

Head unit multifunction steering wheel button group controls (S163/2) 

G12941419Courtesy of MERCEDES-BENZ USA
Item Function Designation Equipment variant
14 Main menu button (multimedia system) Home button (S163/2s14) -
15 Touch control (multimedia system) Head unit finger navigation pad (S163/2s10) -
16 Back key "Back" button (S163/2s13) -
17 Voice Control System or voice control, start voice dialog Voice control ON and Favorites switch (S163/2s17) -
18 Adjust volume Volume control switch (S163/2s16) -
19 Make/accept call Accept/terminate phone call switch (S163/2s15) -
20 Show favorites Voice control ON and Favorites switch (S163/2s17) -
21 Sound OFF (end voice dialog) Volume adjustment switch (S163/2s16) -
22 Reject/terminate call (end voice dialog) Accept/terminate phone call switch (S163/2s15) -

Operation of the on-board computer or the multimedia system through the finger navigation pads is indicated acoustically.

G12941420Courtesy of MERCEDES-BENZ USA

Lower multifunction steering wheel button group (vehicles with AMG steering wheel buttons (AMG DRIVE UNIT)), shown on left-hand drive vehicle 

Button group Function
Lower multifunction steering wheel button group 1 Electronic Stability Program (ESP®) (On, Off, Sport)
  Suspension (Comfort, Sport, Sport Plus)
  Transmission (Manual, Automatic)
  ECO start/stop function (On, Off)
  Exhaust gas flap (Open, Closed)
Lower multifunction steering wheel button group 2 Drive program (Comfort, Sport, Sport Plus, RACE, Individual, ECO, Slippery)
  Traction control (Stages 1 to 9)
Fig 2: Steering Wheel Upshift/Downshift Button Components Location - Model 205
G12941421Courtesy of MERCEDES-BENZ USA

Vehicles with capacitive steering wheel 

G12941422Courtesy of MERCEDES-BENZ USA