Fuel consumption, function - GF54.50-P-2007RR

MODEL 230 

Fuel consumption display function:

The trip computer provides displays of the average fuel consumption rate:

• "SINCE START" (short-distance memory) and
• "SINCE RESET" (long-distance memory)

Depending on the unit setting (kilometers/miles) and the national variant coding of the instrument cluster (A1) the fuel consumption is displayed in:

• liters per 100 kilometers (ECE),
• miles per gallon (USA) or
• kilometers per liter (Japan).

Fuel consumption "SINCE START" (short-distance memory), function 

• Activate the "SINCE START" display using the system selection button (S110s3) and the scroll forward/back button (S110s1) on the multifunction steering wheel.
• The display shows the data calculated since the last reset (RESET) of the short-distance memory.
• The distance traveled "SINCE START" appears on the left multifunction display (A1p13).
• Additional information also appears on the right multifunction display (A1p15):
  • the average travel speed
  • the elapsed time since starting
  • the average fuel consumption

Fuel consumption "SINCE RESET" (long-distance memory), function 

• Activate the "SINCE RESET" display using the system selection button (S110s3) and the scroll forward/back button (S110s1) on the multifunction steering wheel.

  The display is based on the data registered and calculated since the last reset (RESET) of the long-distance memory.

• The travel distance "SINCE RESET" appears on the left multifunction display (A1p13).
• Additional information also appears on the right multifunction display panel (A1p15):
  • the average travel speed
  • the elapsed time since the reset
  • the average fuel consumption

The trip computer calculates the average fuel consumption figures from the distance 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 (A1) receives this 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 distance traveled is calculated from the four wheel speeds. The signals are sent by the SBC control unit (A7/3n1) via the ESP, SPS [PML] and BAS control unit (N47-5) and the engine compartment CAN.

After resetting there is not sufficient data material for correct calculation of the consumption.

As a transitional solution for this period, the display shows a calculated figure based on the individual vehicle's fuel consumption; this display varies according to the unit setting (miles/ kilometers) and the national version code entered in the instrument cluster (A1). Actual current fuel consumption may vary from the figure indicated.

The maximum available display is 40 l/100 km. Displays using miles per gallon or kilometers per liter revert to zero.

It is completely normal for the "since start" display (short-distance memory) and "since reset" display (long-distance memory) to show different values since the two displays are based on different sets of data. The "since start" display (short-distance memory) reacts much more sensitively to the current driving situation than the "since reset" display (long-distance memory).

	Reset, function		GF54.50-P-2010RR
	Range, function		GF54.50-P-2006RR
	Kilometer/miles switchover, function		GF54.50-P-2002RR
	Instrument cluster (IC), operating information		GF54.30-P-0002-05R
	Instrument cluster (IC), networking of components		GF54.30-P-0002-06R
	Multifunction steering wheel, function	Up to 31.8.03	GF82.90-P-0001R
		As of 1.9.03 up to 31.5.04	GF82.90-P-0001RJ
		except CODE (498) Japan version except CODE (494) USA version As of 1.9.03 up to 30.6.04 with CODE (494) USA version As of 1.9.03 with CODE (498) Japan version
		As of 1.6.04	GF82.90-P-0001RM
		except CODE (498) Japan version except CODE (494) USA version As of 1.7.04 with CODE (494) USA version