Instrument cluster (IC), function - GF54.30-P-0002CE

MODEL 204.0/2 as of model year 2009

MODEL 204.3

MODEL 204.9

Fig 1: Instrument Cluster - Block Diagram (1 Of 3)

Courtesy of MERCEDES-BENZ USA

Fig 2: Instrument Cluster - Block Diagram (2 Of 3)

Courtesy of MERCEDES-BENZ USA

Fig 3: Instrument Cluster - Block Diagram (3 Of 3)

Courtesy of MERCEDES-BENZ USA

Instrument cluster, general

The instrument cluster notifies the driver of all dynamic and static driving conditions as well as about the current condition of the systems installed in the vehicle. In the event of any faulty or safety-relevant vehicle functions, various warnings are displayed on the instrument cluster.

The following displays are incorporated into the instrument cluster in order to be able to convey information to the driver:

Permanent displays (e.g. vehicle speed, rotational speed, tank contents)
Indicator lamps (green, yellow or blue) (e.g. turn signals, high beams)
Warning lamps (red) (e.g. coolant level, brake fluid level)
Travel distance display (model 204 (except 204.077/277/377) without code (442) Comfort multifunction steering wheel)
Multifunction display (with code (442) Comfort multifunction steering wheel, model 204.077/277/377)

The function description for the "Instrument cluster (KI) function" contains the following functions:

Function sequence for activate instrument cluster
Function sequence for indicator lamp test

The following functions are also possible:

Control/warning messages, function
Display operating conditions, function
Comfort displays, function
Trip computer, function
Settings on workshop level, function

Function sequence for activate instrument cluster

The background illumination for travel distance display (model 204 (except 204.077/277/377) without code (442) Comfort multifunction steering wheel) or for multifunction display (with code (442) Comfort multifunction steering wheel, model 204.077/277/377) in the instrument cluster is activated in the following events:

Open or close driver door
Unlocking vehicle using radio or infrared
New fault entry with the attribute "Wake display"
Operation of the button group of the left multifunction steering wheel with circuit 15C On

The scale illumination is also activated by the instrument cluster under the following conditions:

Standing light on (with instrument cluster without black dial; otherwise always activated)

After switching off circuit 15R, the instrument cluster remains active for t = 30 s. If a fault exists this time is increased to t = 120 s.

Additional function requirements for indicator lamp test

Circuit 15 On

Function sequence for indicator lamp test

The indicator lamp test serves the function test of certain warning lamps and indicator lamps in the instrument cluster.

The instrument cluster carries out this test automatically each time circuit 15 is switched on. The electronic ignition lock control unit transmits the status of circuit 15 over the chassis CAN.

The function of the following warning and indicator lamps is checked during the indicator lamp test:

Fuel reserve indicator lamp
Seat belt warning lamp
Supplemental restraint system indicator lamp
Preglow indicator lamp (on diesel engine)
Antilock brake system indicator lamp
ESP OFF indicator lamp (model 204.077/277/377)
ESP®/ASR warning lamp OFF (as of 1.6.10)
Electronic Stability Program warning lamp
Brake system warning lamp
Coolant temperature warning lamp
Engine diagnosis indicator lamp
DISTRONIC warning lamp (with code (233) Distronic Plus)
Tire pressure monitor warning lamp (with code (470) Tire pressure monitor (standard) or with code (475) Tire pressure monitor (premium), Schrader)

The indicator lamp test is terminated when the engine is started.

The following indicator lamps are not tested:

Left turn signal indicator light
Right turn signal indicator light
High beam indicator lamp
Rear fog light indicator lamp (as of 1.6.09)
Standing light indicator lamp (as of 1.6.12 with instrument cluster with black dial)
Front fog lamp indicator lamp (as of 1.6.09)
Low beam indicator lamp

Detailed information on the warning and indicator lamps is available in the "Instrument cluster component description" service information.

Instrument cluster (IC), operating information	MODEL 204.0 (except 204.077), 204.2 (except 204.277) as of model year 2009 without CODE 442 (Luxury multifunction steering wheel)/AEJ 08	GF54.30-P-0002-05CEA
Instrument cluster (IC), operating information	MODEL 204.0 (except 204.077), 204.2 (except 204.277) as of model year 2009 with CODE 442 (Luxury multifunction steering wheel) MODEL 204.077/277 as of model year 2009MODEL 204.3 (except 204.377) with CODE 442 (Luxury multifunction steering wheel) MODEL 204.377MODEL 204.9 with CODE 442 (Luxury multifunction steering wheel)	GF54.30-P-0002-05CEB
Control/warning messages, function		GF54.30-P-2001CE
Display operating conditions, function		GF54.30-P-3041CE
Comfort displays, function		GF54.30-P-3043CE
Trip computer, function		GF54.30-P-3044CE
Settings on workshop level, function	MODEL 204.0 (except 204.077), 204.2 (except 204.277) as of model year 2009 with CODE 442 (Luxury multifunction steering wheel) MODEL 204.077/277 as of model year 2009MODEL 204.3 (except 204.377) with CODE 442 (Luxury multifunction steering wheel) MODEL 204.377MODEL 204.9 with CODE 442 (Luxury multifunction steering wheel)	GF54.30-P-2020CE
Active service system (ASSYST PLUS), function		GF00.20-P-0004CE