Display monitoring/warning messages via indicator lamps, function - GF54.30-P-2011SX
MODEL 221.0 /1, 216.3 up to Model Year 8
Shown on model 221 up to 31.8.06
High beam indicator lamp
Information flow:
- The signal for actuating the high beam indicator lamp is placed on the interior CAN by the front SAM control unit with fuse and relay module (N10/1).
- The central gateway control unit (N93) reads in the signals from the interior CAN and places them on the central CAN.
- The instrument cluster reads in the signals from the central CAN and actuates the high beam indicator lamp accordingly
Fuel reserve indicator lamp
The fuel reserve warning lamp is actuated as soon as the reserve range is reached. Its actuation is linked to the fuel level and reserve indicator.
Information flow:
- The signal for actuating the fuel level and reserve indicator is placed on the interior CAN by the front SAM control unit with fuse and relay module.
- The central gateway control unit reads in the signals from the interior CAN and places them on the central CAN.
- The instrument cluster reads in the signals from the central CAN and actuates the fuel level and reserve indicator accordingly.
Airbag indicator and warning lamp
The airbag indicator and warning lamp is actuated when there is a fault in the supplemental restraint system (SRS).
Information flow:
- The signal for actuating the airbag indicator and warning lamp is placed on the chassis CAN by the restraint systems control unit (N2/7).
- The central gateway control unit reads in the signals from the chassis CAN and places them on the central CAN.
- The instrument cluster reads in the signals from the central CAN and actuates the airbag indicator and warning lamp accordingly.
Preglow indicator lamp, only with engine 642 (model 221)
The preglow indicator lamp is only fitted to vehicles with engine 642. It is actuated with "circuit 15 ON" as long as the preheating time runs.
Information flow:
- The signal for actuating the preglow indicator lamp is placed on the chassis CAN by the CDI control unit (N3/9).
- The central gateway control unit reads in the signals from the chassis CAN and places them on the central CAN.
- The instrument cluster reads in the signals from the central CAN and actuates the preglow indicator lamp accordingly
In the event of a defect in the preglow indicator lamp a fault code is set in the instrument cluster and a corresponding message is transmitted to the CDI control unit via the Controller Area Network (data bus/CAN bus) (CAN). However no error message appears in the multifunction display.
ABS indicator lamp
The ABS indicator lamp is actuated when there is a fault in the antilock brake system (ABS). Information flow:
- The signal for actuating the ABS indicator lamp is placed on the chassis CAN by the ESP control unit (N47-5).
- The central gateway control unit reads in the signals from the chassis CAN and places them on the central CAN.
- The instrument cluster reads in the signals from the central CAN and actuates the ABS indicator lamp accordingly.
Engine diagnosis indicator lamp, except code (494) USA version
The engine diagnosis indicator lamp is actuated if a fault is present in the injection system, ignition system or in the exhaust emission system. Information flow:
- The signal for actuating the engine diagnosis indicator lamp is placed on the chassis CAN by the CDI control unit (model 221) or by the ME-SFI [ME] control unit (N3/10).
- The central gateway control unit reads in the signals from the chassis CAN and places them on the central CAN.
- The instrument cluster reads in the signals from the central CAN and actuates the engine diagnosis indicator lamp accordingly.
CHECK ENGINE indicator lamp (A1e26), with code (494) USA version
The CHECK ENGINE indicator lamp is actuated if a fault is present in the injection system, ignition system or exhaust emission system. Information flow:
- The signal for actuating the CHECK ENGINE indicator lamp is placed on the chassis CAN by the CDI control unit (model 221) or ME-SFI [ME] control unit.
- The central gateway control unit reads in the signals from the chassis CAN and places them on the central CAN.
- The instrument cluster reads in the signals from the central CAN and actuates the CHECK ENGINE indicator lamp accordingly
With some indicator and warning lamps a fault message in the multifunction display ensues at the same time as actuation. While most messages in the multifunction display can be acknowledged, the indicator and warning lamps light up as long as the fault is present. Messages cannot be acknowledged.
All fixed indicator and warning lamps in the Instrument cluster are equipped with light emitting diodes.
Shown on model 221 up to 31.8.06 with code (610) Night View Assist
Variable indicator and warning lamps in the multifunction display
The variable indicator and warning lamps are displayed in the multifunction display. They can change their position in the multifunction display depending on the request.
The following indicator and warning lamp are variable indicator and warning lamps:
- Left turn signal indicator lamp
- Right turn signal indicator lamp
- Brake fluid warning lamp
- Seat belt warning lamp
- ESP warning lamp
- DTR warning lamp (with code (219) Distronic (DTR) or with code (233) Distronic Plus)
- Tire pressure monitor warning lamp (with code (494) USA version)
- electronic parking brake warning lamp (red)
- electronic parking brake warning lamp (yellow)
Left turn signal indicator lamp and right turn signal indicator lamp
These are activated differently according to function. The following functions are available:
- Turn signals
- Hazard warning flashing
Turn signals
With turn signaling either the left turn signal indicator lamp or right turn signal indicator lamp are actuated by the instrument cluster. Information flow:
- The signal for actuating the left turn signal indicator lamp or right turn signal indicator lamp is placed on the interior CAN by the rear SAM control unit with fuse and relay module (N10/2).
- The central gateway control unit reads in the signals from the interior CAN and places them on the central CAN.
- The instrument cluster reads in the signals from the central CAN and actuates the left turn signal indicator lamp or right turn signal indicator lamp accordingly.
In addition to the visual indicator of the turn signaling a turn signal knocking of the audible turn signal indicator (A1h2) sounds in the instrument cluster.
If one of the turn signal lamps fails, the left turn signal indicator lamp or right turn signal indicator lamp is actuated at twice the frequency.
Hazard warning flashing
With hazard warning flashing the left turn signal indicator lamp and right turn signal indicator lamp are always actuated by the instrument cluster. Hazard warning flashing can be triggered by various functions. The main control unit for hazard warning flashing is the rear SAM control unit with fuse and relay module.
The following functions can trigger hazard warning flashing:
- Manual actuation of the hazard warning system button (A40/9s3)
- Triggering of an airbag
- Triggering the anti-theft alarm system [EDW] alarm on vehicles with code (551) Anti-theft alarm system (ATA [EDW])
Information flow:
- The signal for actuating the left turn signal indicator lamp and right turn signal indicator lamp is placed on the interior CAN by the rear SAM control unit with fuse and relay module.
- The central gateway control unit reads in the signals from the interior CAN and places them on the central CAN.
- The instrument cluster reads in the signals from the central CAN and actuates the left turn signal indicator lamp or right turn signal indicator lamp accordingly.
A warning tone sounds in the instrument cluster in addition to the visual indicator of the warning flashing.
Brake fluid warning lamp
The brake fluid warning lamp is actuated if the minimum level of the brake fluid is dropped below. Information flow:
- The signal for actuating the brake fluid warning lamp is placed on the interior CAN by the front SAM control unit with fuse and relay module
- The central gateway control unit reads in the signals from the interior CAN and places them on the central CAN.
- The instrument cluster reads in the signals from the central CAN and actuates the brake fluid warning lamp accordingly.
Seat belt warning lamp
The seat belt warning lamp is actuated depending on the country. On vehicles with code (494) USA version or with code (623) Gulf States version the seat belt warning lamp lights as of "circuit 61 ON" for 6 s, irrespective of the following components:
- Driver seat belt buckle and seat belt warning switch (S68/1)
- Front passenger seat belt buckle and seat belt warning switch (S68/2)
- Front passenger seat occupied and child seat recognition sensor (B48)
On vehicles with code (498) Japan version the seat belt warning lamp lights up as of "circuit 15 ON" for 6 s, irrespective of the following components:
- Driver seat belt buckle and seat belt warning switch
- Front passenger seat belt buckle and seat belt warning switch
- Front passenger seat occupied and child seat recognition sensor
When the seat belt warning lamp is actuated, on the above national versions a warning tone sounds simultaneously in the first 6 s. After the first 6 s the actuation characteristics of the seat belt warning lamp correspond to those of the other national versions. The actuation characteristics are as follows:
- The seat belt warning lamp lights up if the status "circuit 61 ON" is present as well the vehicle speed is > 25 km/h and the driver seat belt buckle and seat belt warning switch is not closed. The seat belt warning lamp goes out as soon as the driver seat belt buckle and seat belt warning switch is closed.
- The seat belt warning lamp lights up if the status "circuit 61 ON" is present and the vehicle speed is > 25 km/h as well as the front passenger seat occupied and child seat recognition sensor has detected a person or child seat on the front passenger seat and the front passenger seat belt buckle and seat belt warning switch is not closed. The seat belt warning lamp goes out as soon as the front passenger seat belt buckle and seat belt warning switch is closed
A warning chime sequence sounds simultaneously when the seat belt warning lamp is actuated.
The warning chime sequence of the seat belt reminder warning is deactivated immediately if the driver / front passenger have fastened their seat belts. The maximum actuation time of 110 s continues running in the background. If a belt is unfastened within this time, the warning chime sequence is output again.
Information flow:
- The signal for actuating the seat belt warning lamp is placed on the chassis CAN by the restraint systems control unit.
- The central gateway control unit reads in the signals from the chassis CAN and places them on the central CAN.
- The instrument cluster reads in the signals from the central CAN and actuates the seat belt warning lamp accordingly.
The seat belt reminder warning is issued once for the journey, but can be set active again when:
- Vehicle speed < 5 km/h
- The driver door is opened and closed again
ESP warning lamp
The ESP warning lamp is actuated as soon as the ESP system intervenes in the traffic activities. The ESP warning lamp flashes or lights up depending on the warning message or error message. Information flow:
- The signal for actuating the ESP warning lamp is placed on the chassis CAN by the ESP control unit.
- The central gateway control unit reads in the signals from the chassis CAN and places them on the central CAN.
- The instrument cluster reads in the signals from the central CAN and actuates the ESP warning lamp accordingly.
DTR warning lamp, with code (219) Distronic (DTR) or with code (233) Distronic Plus
The DTR warning lamp is actuated if the driving situation necessitates manual intervention from the driver in the interests of driving safety. Information flow:
- The signal for actuating the DTR warning lamp is placed on the chassis CAN by the ESP control unit
- The central gateway control unit reads in the signals from the chassis CAN and places them on the central CAN.
- The instrument cluster reads in the signals from the central CAN and actuates the DTR warning lamp accordingly.
Tire pressure monitor warning lamp, with code (494) USA version
The tire pressure monitor warning lamp is actuated if a "pressure loss" or "rapid pressure loss" is established in one of the vehicle tires.
Information flow:
- The signal for actuating the tire pressure monitor warning lamp is either placed on the chassis CAN by the ESP control unit or on the interior CAN by the TPM [RDK] control unit (N88).
- The central gateway control unit reads in the signals from the chassis CAN or from the interior CAN and places them on the central CAN.
- The instrument cluster reads in the signals from the central CAN and actuates the tire pressure monitor warning lamp accordingly.
Electronic parking brake warning lamps
The electronic parking brake warning lamps indicate the function status and fault status of the electronic parking brake. Information flow:
- The signal for actuating the electronic parking brake warning lamp (red) and electronic parking brake (yellow) is placed on the front end CAN by the electric parking brake controller unit (A13).
- The central gateway control unit reads in the signals from the front end CAN and places them on the central CAN.
- The instrument cluster reads in the signals from the central CAN and actuates the electronic parking brake warning lamps accordingly.
With some indicator and warning lamps a fault message in the multifunction display ensues at the same time as actuation. While most of the messages can be acknowledged, the indication and warning lamps remain lit as long as the fault is present. Messages cannot be acknowledged.
| Instrument cluster, component description | GF54.30-P-6000SX |