S83.40-4564-78
Shown with CODE HH4 (THERMOTRONIC automatic air conditioning) without CODE H12 (Auxiliary water heater) |
S98/1 | Front heater/air conditioning operating unit switch |
Control element | Controllable function | Operating feedback |
Left temperature selection button (S98/1s1) | Setting of specified temperature, left front | Audio/COMAND display control unit (A40/8) |
Air distribution button (S98/1s2) | Change air distribution | Audio/COMAND display control unit (A40/8) |
Blower setting button (S98/1s3) | Set front blower output | Audio/COMAND display control unit (A40/8) |
"AUTO" button (S98/1s4) | Automatic mode ON | Integrated LED and indicator in the Audio/COMAND display control unit (A40/8) |
Defrosting button (S98/1s5) | Defrost mode ON/OFF | Integrated LED and indicator in the Audio/COMAND display control unit (A40/8) |
Climate control "MENU" and residual heat "REST" button (S98/1s6) | Climate control menu and residual heat utilization On/Off | Integrated LED (only for residual heat with "Circuit 15 OFF"), otherwise indicator in Audio/COMAND display control unit (A40/8) |
Rear window heater button (S98/1s7) | Rear window heater (R1) (without CODE W64 (Rear window to be opened separately)) or rear window heater (R1/3) (with CODE W64 (Rear window to be opened separately)) ON/OFF | Integrated LED |
A/C button (S98/1s8) | Refrigerant compressor with magnetic clutch (A9/10) ON/OFF | Integrated LED |
Air recirculation mode button (S98/1s9) | Air recirculation mode ON/OFF | Integrated LED |
Rear heater/rear air conditioning button (S98/1s10) | Rear heater/rear air conditioning ON/OFF | Audio/COMAND display control unit (A40/8) |
Right temperature selection button (S98/1s11) | Setting of specified temperature, right front | Audio/COMAND display control unit (A40/8) |
S83.40-4563-78
Shown with CODE HH4 (THERMOTRONIC automatic air conditioning) and CODE H12 (Auxiliary water heater) |
S98/1 | Front heater/air conditioning operating unit switch |
Control element | Controllable function | Operating feedback |
Left temperature selection button (S98/1s1) | Setting of specified temperature, left front | Audio/COMAND display control unit (A40/8) |
Air distribution button (S98/1s2) | Change air distribution | Audio/COMAND display control unit (A40/8) |
Blower setting button (S98/1s3) | Set front blower output | Audio/COMAND display control unit (A40/8) |
"AUTO" button (S98/1s4) | Automatic mode ON | Integrated LED and indicator in the Audio/COMAND display control unit (A40/8) |
Defrosting button (S98/1s5) | Defrost mode ON/OFF | Integrated LED and indicator in the Audio/COMAND display control unit (A40/8) |
Climate control "MENU" and residual heat "REST" button (S98/1s6) | Climate control menu and residual heat utilization On/Off | Integrated LED (only for residual heat with "Circuit 15 OFF"), otherwise indicator in Audio/COMAND display control unit (A40/8) |
Rear window heater button (S98/1s7) | Rear window heater ON/OFF | Integrated LED |
Air recirculation mode button (S98/1s9) | Air recirculation mode ON/OFF | Integrated LED |
Rear heater/rear air conditioning button (S98/1s10) | Rear heater/rear air conditioning ON/OFF | Audio/COMAND display control unit (A40/8) |
Right temperature selection button (S98/1s11) | Setting of specified temperature, right front | Audio/COMAND display control unit (A40/8) |
Stationary heater button (S98/1s12) | Stationary heater On/Off | Integrated LED |
It is possible to switch off the air conditioning or the refrigerant compressor with magnetic clutch using the A/C button (S98/1s8). If this button is not installed on an operating panel, switching off the air conditioning or the refrigerant compressor with magnetic clutch is only possible using the menu in radio (Audio/COMAND) (N87/6).
Location
The FRONT heater/air conditioning operating unit switch (S98/1) is located in the center console.
Task
The FRONT heater/air conditioning operating unit switch (S98/1) has the following tasks:
Reception of signals and requests
Transmission of signals and requests
Reception of signals and requests
The FRONT heater/air conditioning operating unit switch (S98/1) receives requests for function feedback via climate control LIN (LIN B8) for the following functions:
Climate control
Recirculated air mode
Windshield defrost function
Rear window heater
Stationary heater (with CODE H12 (Auxiliary water heater))
Transmission of signals and requests
The FRONT heater/air conditioning operating unit switch (S98/1) sends function requests via climate control LIN which can be selected via different controls.
Wiring diagram for automatic air conditioning (AAC [KLA]) | Model 448.8 with code HH4 (THERMOTRONIC automatic climate control) | ||
Model 447.8 with code HH4 (THERMOTRONIC automatic climate control)Model 447.8 with code HH9 (Air conditioner, automatic heater control) | |||
Overview of system components for climate control |