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

Model 463 

as of Model year 2013 

Function requirements, general 

The electronic ignition lock control unit (N73) sends the circuit 15 status as of production date April 3rd, 2018 (except Model 463.342) over the user interface CAN (CAN HMI) or up to production date April 2nd, 2018 or for Model 463.342 over suspension CAN 2 (CAN E2) to the instrument cluster (A1).

Trip computer (TRIP) function, general 

The trip computer provides data and information on average fuel

consumption, trip time, average speed, travel distance and remaining

range.

The trip computer provides the following display screens:

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 in the instrument cluster as follows:

The TRIP computer includes the following sub-functions:

Function sequence, travel distance display after start/after reset 

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

As of production date April 3rd, 2018 (except Model 463.342) the Electronic Stability Program control unit (N30/4) sends information on the wheel speeds over the suspension FlexRay (Flex E), electronic ignition lock control unit and the user interface CAN to the instrument cluster.

Up to production date April 2nd, 2018 or for Model 463.342 the Electronic Stability Program control unit sends information on the wheel speeds over suspension CAN 1 (CAN E1), the electronic ignition lock control unit and suspension CAN 2 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.

IMPORTANT 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.

IMPORTANT Model 463

as of Model year 2013

with code J11 (Speedometer, mph and km/h)

If the value for travel distance is between 6213 and 9999 and the distance 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.

Distance units are changed in the "settings" menu in the "instrument cluster" sub-menu. The distance unit can be changed from "km" to "miles" in the "Speedometer/travel distance display unit" display window.

The "After reset" distance is calculated in the same way as the "After start" distance is calculated, although this is displayed in a range of 0 up to 99, 999 km.

Depending on the instrument cluster settings, the travel distance is displayed in:

IMPORTANT When kilometers are switched over to miles, liters are switched over to gallons automatically.

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 is realized in the range from 0 to 999 h and 59 min.

The time "After reset" is determined similar to the time "After start"; however, the display here is in the range from 0 to 9999 h and 59 min.

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 travel distance is calculated in the instrument cluster from the wheel speeds.

On vehicles with CODE J11 (Speedometer mph and km/h), depending on the instrument cluster setting (kilometers/miles), the average speed is shown in:

Function sequence for composite mileage display 

The trip computer calculates the fuel consumption using the following information:

On vehicles with CODE J11 (Speedometer mph and km/h), depending on the instrument cluster setting (kilometers/miles), the fuel consumption is shown in:

On vehicles as of production date April 3rd, 2018 (except Model 463.342) the CDI control unit (N3/9) (diesel engine) or the ME-SFI [ME] control unit (N3/10) (gasoline engine) sends the consumption signal over the engine CAN (CAN C), powertrain control unit (N127), suspension FlexRay, electronic ignition lock control unit and the user interface CAN to the instrument cluster.

On vehicles up to production date April 2nd, 2018 or for Model 463.342 the CDI control unit (engine 642.8) or the ME-SFI [ME] control unit (engine 157, 273) sends the relevant information over suspension CAN 1, the electronic ignition lock control unit and suspension CAN 2 to the instrument cluster.

On vehicles up to production date April 2nd, 2018 and with engine 176, the ME-SFI [ME] control unit sends the relevant information over the engine CAN (CAN C1), powertrain control unit, suspension CAN 1, electronic ignition lock control unit +and suspension CAN 2 to the instrument cluster.

Function sequence for remaining distance display 

The trip computer determines the expected range from the ratio between the current tank capacity and the average fuel consumption.

As of 03 04 2018 (except Model 463 347): 

The fuel system control unit (N118) sends information on the fill level of the fuel tank via the drive train CAN (CAN C1), powertrain control unit, chassis FlexRay, electronic ignition lock control unit and user interface CAN to the instrument cluster.

Up to production date April 2nd, 2018 or for Model 463.342- 

The current tank content is recorded by the fill level sensor for the fuel tank fuel level indicator (B4). The SAM control unit (N10) reads in the signals from the fill level sensor for the fuel tank fuel level indicator directly and sends them over the interior CAN (CAN B) or with code E11 (Stealth lights with convoy marking) over the interior CAN, stealth lights control unit (N1) and the instrument cluster CAN (CAN IC) to the instrument cluster. The average fuel consumption is gathered from the short-distance memory or long-distance memory.

Function sequence for display reset 

The trip computer is reset as of production date April 3rd, 2018 (except Model 463.342) over the instrument cluster multifunction steering wheel button group (S163/1) or up to production date April 2nd, 2018 or for Model 463.342 in the "Reset values" menu by pressing the OK button. (S110s6) in the left multifunction steering wheel button group (S110).

Only the currently displayed information is then reset.

As of 03 04 2018 (except Model 463 342)- 

The corresponding selection is read in by the steering wheel electronics (N135) and sent over the steering wheel CAN (CAN LR) to the steering column tube module control unit (N80). The steering column tube module control unit forwards the signals over the suspension FlexRay, electronic ignition lock control unit and the user interface CAN to the instrument cluster.

Up to 02 04 2018 or for Model 463 342: 

The corresponding selection is read in by the steering wheel electronics and sent over the steering LIN (LIN E1) to the steering column tube module control unit. The steering column tube module control unit forwards the signals over chassis CAN 1, the electronic ignition lock control unit and chassis CAN 2 to the instrument cluster.

  Electrical function schematic, instrument cluster trip computer Model 463 (except 463.342) as of Model year 2019 PE54.30-P-2057-97ZGB
    Model 463 (except 463.342) as of Model year 2013 up to Model year 2019
Model 463.342 as of Model year 2017		 PE54.30-P-2057-97ZGA
  Overview of system components, instrument cluster (IC) component description   GF54.30-P-9996GW 
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