Instrument cluster (IC), task - GF54.30-P-3039-02R
The instrument cluster (A1) displays the dynamic and static status of the vehicle.
Tasks
- Actuation of stepper motors
- Output via left multifunction display (A1p13)
- Output via right multifunction display (A1p15)
- Actuation of signal lamps
- Gong/warning tone functionality for parking brake warning, light warning, key warning, Vario roof warning, and vehicle speed warning (Gulf States only)
- Warning tone functionality for seat belt reminder warning (USA, Canada, Japan only)
- Warning tone functionality for Distronic (DTR) (code 219a)
- Configurations can also be set while driving with the exception of:
- Switching daytime running lamps on/off
- Display brightness adjustment:
- If the automatic light switch daylight sensor (B32/1) detects "day", 2 phototransistors control the display brightness.
- If the automatic light switch daylight sensor (B32/1) detects "night", the phototransistors and controller presetting are used to determine the display brightness.
- Adjusting the brightness of scale, needle and symbol lighting:
- If the automatic light switch daylight sensor (B32/1) detects "day", the brightness is set to 100% and cannot be adjusted.
- If the automatic light switch daylight sensor (B32/1) detects "night", the brightness can be adjusted as required using the controller.
- Input/output signals on interior CAN and engine compartment CAN
- Network management components
If the "SBC Hold" or "SBC Stop" function was active before ignition "OFF", the instrument cluster (A1) automatically actuates the warning messages.
Actuation of stepper motors for:
- Coolant temperature gauge (A1p1)
- Fuel level and reserve indicator (A1p2)
- Electronic speedometer (A1p8)
- Tachometer (A1p5)
Output via left multifunction display (A1p13):
- Total /trip mileage (speed display with UK variant)
- Limiter/cruise control (Distronic) status
- Fault and warning messages (symbols)
- Navigation (special equipment)
- Telephone (special equipment)
- Configuration menus for user-defined vehicle settings by scrolling
- Workshop-relevant information (e.g software and hardware version)
- Status messages of SBC function
- Tire pressure monitor (TPM) (special equipment)
- Trip computer
- Vario roof symbol
- Roll bar symbol
These displays or messages are only some of the possible displays.
Output via right multifunction display (A1p15):
- Gear indicator and transmission mode display
- Outside temperature indicator
- Distance display when Distronic is active (special equipment)
- Fault and warning messages
- Audio systems status messages
- Telephone (special equipment)
- Trip computer
- Engine oil level
- Configuration menus for user-defined vehicle settings by scrolling
- Workshop-relevant information (e.g software and hardware version)
- Status messages of SBC function
- Vario roof status messages
- Roll bar status messages
These displays or messages are only some of the possible displays.
Actuation of signal lamps:
- High beam indicator lamp (A1e3)
- Brake fluid and parking brake warning lamp (A1e7)
- Left turn signal indicator lamp (A1e1) and right turn signal indicator lamp (A1e2)
- ABS indicator lamp (A1e17)
- Airbag indicator and warning lamp (A1e15)
- ESP and ABS warning lamp (A1e41)
- DTR warning and indicator lamp (A1e59)
- DTR function lamp (A1e60)
- Tire pressure monitor warning lamp (A1e66)
- Fuel reserve warning lamp (A1e4)
- Seat belt warning lamp (A1e9)
- Engine diagnosis indicator lamp (A1e58) or "CHECK ENGINE" MIL (A1e26) (USA)
- Roll bar (RB [URB]) warning lamp (A1e29)
Other functionalities:
- Instrument illumination rheostat and reset button (A1r1)
- Warning buzzer (A1h1)
Discrete input/outputs
- Circuit 31
- Circuit 30
- Circuit 15R
- Circuit 31 electronic clock (A70)
- Circuit 30 electronic clock (A70)
- Lin bus electronic clock (A70) data line
- K-line (diagnosis)
Variants:
- National version for ECE, Japan, Korea, Canada (km)
- National version for USA, UK (miles)
Scale value:
- 260 km/h or 160 mph (DC vehicles)
- 330 km/h or 200 mph (AMG vehicles)
The instrument cluster (A1) is linked to the interior CAN and the engine compartment CAN.