Fuel gaugeThe vehicle inclination may
cause the display to vary.
Notes on refueling, refer to
page 246.
Tachometer Always avoid engine speeds in
the red warning field. In this
range, the fuel supply is inter‐
rupted to protect the engine.
Engine oil temperature▷Cold engine: the pointer is at
the low temperature end.
Drive at moderate engine and
vehicle speeds.▷Normal operating tempera‐
ture: the pointer is in the mid‐
dle or in the left half of the
temperature display.▷Hot engine: the pointer is at the high tem‐
perature end. A Check Control message is
displayed in addition.
Coolant temperature
Should the coolant, and with it the engine, be‐
come too hot, a Check Control message is dis‐
played.
Check the coolant level, refer to page 261.
Odometer and trip odometer▷Odometer, arrow 1.▷Trip odometer, arrow 2.
Display/reset miles
Press the knob.
▷When the ignition is switched
off, the time, external temper‐
ature and odometer are dis‐
played.▷When the ignition is switched on, the trip
odometer is reset.
External temperature
External temperature warning If the display drops to
+37 ℉/+3 ℃, a signal sounds.
A Check Control message is dis‐
played.
There is the increased danger of
ice.
Ice on roads
Even at temperatures above +37 ℉/+3 ℃,
there can be a risk of ice on roads.
Therefore, drive carefully on bridges and shady
roads, for example, to avoid the increased dan‐
ger of an accident.◀
Time The time is displayed at the bot‐
tom of the instrument cluster.
Setting the time and time format,
refer to page 79.
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Engine oilVehicle equipment
All standard, country-specific and optional
equipment that is offered in the model series is
described in this chapter. Therefore, equipment
is also described that is not available in a vehicle,
e. g., because of the selected optional equip‐
ment or country variant. This also applies for
safety-related functions and systems.
General information
The engine oil consumption is dependent on the
driving style and driving conditions.
Therefore, regularly check the engine oil level
after refueling.
For 640i Gran Coupé:
Checking the oil level
The concept
The oil level is monitored electronically during
driving and shown on the Control Display.
If the oil level reaches the minimum level, a
check control message is displayed.
Displaying the oil level1."Vehicle Info"2."Vehicle status"3. "Engine oil level"
Possible messages
▷"Engine oil level OK"▷"Engine oil at minimum. Add 1 quart of
engine oil!"
When the display appears in the instrument
cluster, add 1 US quart/liter of oil within the
next 125 miles/200 km.▷"Engine oil level below minimum. Add 1
quart!"
Immediately add 1 US quart/liter of oil.
Detailed measurement
Requirements:
▷Vehicle is on a level road and the engine is
running at operating temperature.▷Automatic transmission: Selector lever in
transmission position N or P and gas pedal
not depressed.
In order to perform a detailed measurement of
the engine oil level:
1."Vehicle Info"2."Vehicle status"3. "Measure engine oil level"4."Start measurement"
The oil level is checked and displayed via a scale.
During the detailed measurement, the idle
speed is increased somewhat.
Duration: approx. 1 minute.
Adding engine oil
Filler neck
When the indicator lights up in the instrument
cluster, add 1 US quart/liter of engine oil within
the next 125 miles/200 km.
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