GF54.50-P-2007RT Fuel Consumption, Function

GF54.50-P-2007RT Fuel Consumption, Function
- up to model year 08






Fuel consumption "since start" (short-distance memory), function
Average fuel consumption since start.







Fuel consumption "Since reset" (long-distance memory), function
Average fuel consumption since the last reset.

The" since start" or." since reset" display screen for the trip time can be activated via the system selection button (S110s3) and scroll forward/back button (S110s1) of the multifunction steering wheel.

Depending on the setting (miles/kilometers) and coding of the national version of the instrument cluster (A1) the display appears in:
^ Miles per gallon,
^ Liters per 100 kilometers or
^ Kilometers per liter (only if national variant Japan is coded).

The trip computer calculates the average fuel consumption figures from the mileage traveled and the fuel consumption signal.

The fuel consumption signal uses information on the amount of fuel injected within a specific period.

The instrument cluster receives the data in the following way:
^ The fuel consumption signal is generated by the ME control unit (N3/10) and sent as a message on the engine compartment CAN.
^ The mileage traveled is calculated from the four wheel speeds. The signals come from the ESP control unit (N47-5) via the engine compartment CAN.

Once reset it can take up to three kilometers/miles or two minutes until sufficient data is available in order to calculate and display the consumptions correctly. Depending on the setting (kilometers/miles) and coding of the national version of the instrument cluster the display appears in:
^ liters per 100 kilometers (ECE),
^ Miles per gallon (USA),
^ Kilometers per liter (Japan).

If different values are displayed in the "since start" display screen (short-distance memory) and in the "since reset" display screen (long-distance memory), this is normal as both displays access different data records.

The "since start" (short-distance memory) basically reacts more sensitively to the current driving situation, than the "since reset" display (long-distance memory).