Mercedes-Benz R-Class Owner's Manual page 289

Practical advice
Troubleshooting
Problem
The yellow reserve fuel warning
lamp comes on while the engine
is running.
Warning tones
Problem
The anti-theft warning alarm* is
triggered.
You hear a warning tone.
You hear a warning tone.
You hear a warning tone.
286
Possible cause/consequence
The fuel level has fallen below the
reserve range. The operation of
the auxiliary heating* can no lon-
ger be guaranteed.
Possible cause/consequence
You have opened the vehicle
using the emergency key element
without deactivating the anti-
theft alarm system* first.
A message appears in the multi-
function display.
You are driving with the parking
brake applied.
You did not switch off the lights
when leaving the vehicle.
Suggested solutions
Refuel at the nearest filling station.
X
Suggested solutions
Switch off the alarm ( page 63).
X
Y
See the explanations for the display message (
X
Release the parking brake.
X
Turn the light switch to M or U.
X
or
If the rear foglamp is switched on: press the light switch in as far
X
as it will go.
page 255).
Y
* optional