Trip Computer, Function - GF54.30-P-3044KJE

MODEL 453.091/391/491 with CODE K36 (Instrument cluster with color 8.9 cm (3.5") display) 

Function requirements, general 

• Circuit 15 ON

Trip computer (TRIP) function, general 

The TRIP provides data and information on average energy consumption, trip time, average speed, travel distance and remaining range.

The trip computer provides the following display screens:

• "After start" (short-distance memory)
• "After reset" (long-distance memory)

The information displayed refers to the point in time of the last reset of the short-distance memory ("After start") or of the long-distance memory ("After reset").

The "After start" or "After reset" information is shown on the multifunction display (A1p13) of the instrument cluster (A1) as follows:

• Time elapsed
• Distance traveled
• Average transportation speed
• Average energy consumption

The trip computer comprises the following subfunctions:

• Function sequence, time display after start/after reset 
• Function sequence, travel distance display after start/after reset 
• Function sequence for the average speed display 
• Function sequence for average energy consumption display 
• Function sequence for display reset 

Function sequence, time display after start/after reset 

With circuit 15 ON, the time after start is added up by means of a time counter. The display ranges from 0 to 999 h and 59 min.

The "After reset" time is calculated and displayed in the same way as the "After start" time.

Function sequence, travel distance display after start/after reset 

The travel distance is calculated on the basis of the wheel speeds.

The Electronic Stability Program control unit (N30/4) sends information on the wheel speeds over the interior CAN (CAN B) to the instrument cluster.

The instrument cluster calculates the traveled distance from the wheel speeds.

The travel distance "After start" is displayed in a range of 0 to 9999 km.

If a period of more than t=4 h lies between the time when circuit 15 is switched off and then switched on again, then the "After start" odometer is automatically reset to 0.

If the value for travel distance is between 6213 miles and 9999 km and the unit is changed,(e.g. from km to miles), the odometer will automatically be reset to 0. This reset remains active even if the unit is changed again.

The units can be changed in the "Setup" menu in the "Display" submenu.

The distance unit can be changed from "km" to "miles" in the "Distance" display window.

The "After reset" travel distance is calculated in the same way as the "After start" travel distance. The "After reset" travel distance is displayed in a range from 0 to 9999 km.

Depending on the setting in the instrument cluster or the coded national version, the travel distance is shown in:

• Kilometers (e.g Economic Commission for Europe (ECE), Japan)
• Miles (e.g. USA, Australia)

Function sequence for the average speed display 

The trip computer calculates the average speed from the ratio between the travel distance driven and the time passed (trip time) since the last reset of the short-distance memory or long-distance memory. The instrument cluster calculates the travel distance based on the wheel speeds.

Depending on the setting (kilometers/miles) and the coded national version, the average speed is shown in:

• Km/h (kilometers per hour)
• Mph (miles per hour)

Function sequence for average energy consumption display 

The TRIP calculates the energy consumption using the following information:

• Fuel signal from electric drive control unit (N127)
• Travel distance covered "After start" or "After reset"

Depending on the setting (kilometers/miles) and the national version coding of the instrument cluster, the energy consumption is displayed in:

• kWh/100 km (kilowatt hours per 100 kilometers)

The electric drive control unit sends the relevant information via the interior CAN to the instrument cluster.

Function sequence for display reset 

The TRIP is reset in the "Reset values?" menu by pressing the OK button (S110s7) in the left multifunction steering wheel button group (S110) on vehicles with CODE K36 (Instrument cluster with 8.9 cm (3.5") color display) or by pressing the OK button (S4/5s2) on vehicles with CODE K35 (Instrument cluster with monochrome display). Here, the reset is only carried out for the currently displayed information.

On vehicles with instrument cluster with 8.9 cm (3.5") color display, the audio gateway control unit (N93/1) receives the status of the OK button in the left multifunction steering wheel button group via the steering wheel clock spring contact (A45/1) and sends the status via the interior CAN to the instrument cluster. On vehicles with an instrument cluster with monochrome display, the menu guidance button group (S4/5) sends the status straight to the instrument cluster.

	Electrical function schematic, instrument cluster trip computer	with code K36 (Instrument cluster with 8.9 cm (3.5") color display)	PE54.30-P-2057-97BBE
	Overview of system components, instrument cluster (IC) component description		GF54.30-P-9996KJE