Owner's Manual for the vehicle. With a quick reference ... - E38.org

Onboard computer
85n
380us189
Average fuel consumption
The computer can calculate average
fuel consumption rates for two different
distances at the same time (simultaneous
data for an entire journey and for
a single segment of it, for instance).
To start calculations for distance 1:
Press the keys in the sequence shown
in the diagram.
To start calculations for distance 2:
The procedure is the same as that for
the first distance, except you will press
CONSUM 2 for your selection.
The computer starts calculating fuel
consumption as soon as you start driving.
Data request:
Press the BC key and CONSUM 1 or 2.
380us180
Estimated cruising range
Displays the estimated travel range
available with the remaining fuel. The
system calculates the cruising range
based on operating conditions and the
amount of fuel remaining in the tank.
The computer uses the average rate of
fuel consumption over the preceding
18 miles (30 kilometers) as a reference.
Data request:
Press the keys in the sequence shown
in the illustration.
A range of under 31 miles (50 kilometers)
is displayed in the Check Control
in the instrument cluster.
Please respond to this warning by refueling
at once to avoid serious damage
to the engine and catalytic converter.
When you refuel, the onboard computer
registers the additional fuel only when
more than 1.5 gallons (5 liters) are
added.
Index Data Technology Repairs Car care Controls Overview