Page 345 of 426
345 Practical hints
What to do if ...
Left display
Right display
Possible cause/
consequence
Possible solution
A
Reserve Fuel
The fuel level has fallen into the
reserve range.
Refuel at the next gas station (
page 247).
Fuel Cap
Open
A loss of pressure has been
detected in the fuel system.
The fuel filler cap may not be
closed properly or the fuel sys-
tem may be leaky.
Check the fuel filler cap (
page 247).
If it is not closed properly:
Close the fuel filler cap.
If it is closed properly:
Have the fuel system checked by an authorized
Mercedes-Benz Center.
t
Tel
Enter PIN
You have not yet entered your
PIN in you telephone.
Enter the PIN for your SIM card.
I
Remove
Key
You have forgotten to remove
the SmartKey.
Remove the SmartKey from the starter switch.
Replace
Key
No additional code available for
the SmartKey.
Have the SmartKey checked. Contact an authorized
Mercedes-Benz Center.
Page 346 of 426

346 Practical hintsWhat to do if ...Left display
Right display
Possible cause/
consequence
Possible solution
.
3rd Brake Lamp
The high-mounted brake lamp
is malfunctioning.
Contact an authorized Mercedes-Benz Center as soon as
possible.
Brake Lamp
Left
Auxiliary Bulb On
The left brake lamp is malfunc-
tioning. This message will only
appear if a critical number of
LEDs have blown.
Contact an authorized Mercedes-Benz Center as soon as
possible.
Brake Lamp
Right
Auxiliary Bulb On
The right brake lamp is mal-
functioning. This message will
only appear if a critical number
of LEDs have blown.
Contact an authorized Mercedes-Benz Center as soon as
possible.
Front Foglamp
Left
The left front fog lamp is
malfunctioning.
Contact an authorized Mercedes-Benz Center as soon as
possible.
Front Foglamp
Right
The right front fog lamp is
malfunctioning.
Contact an authorized Mercedes-Benz Center as soon as
possible.
Rear Foglamp
Left
The left rear fog lamp is
malfunctioning.
Contact an authorized Mercedes-Benz Center as soon as
possible.
High Beam
Left
The left high-beam lamp is
malfunctioning.
Contact an authorized Mercedes-Benz Center as soon as
possible.
High Beam
Right
The right high-beam lamp is
malfunctioning.
Contact an authorized Mercedes-Benz Center as soon as
possible.
Page 347 of 426

347 Practical hints
What to do if ...
Left display
Right display
Possible cause/
consequence
Possible solution
.
Turn Signal
Left Mirror
The turn signal in the left exteri-
or rear view mirror is malfunc-
tioning. This message will only
appear if all LEDs have stopped
working.
Have the LEDs replaced as soon as possible.
Turn Signal
Right Mirror
The turn signal in the right exte-
rior rear view mirror is
malfunctioning. This message
will only appear if all LEDs have
stopped working.
Have the LEDs replaced as soon as possible.
License Plate
Lamp - Left
The left license plate lamp is
malfunctioning.
Contact an authorized Mercedes-Benz Center as soon as
possible.
License Plate
Lamp - Right
The right license plate lamp is
malfunctioning.
Contact an authorized Mercedes-Benz Center as soon as
possible.
AUTO Light
Inoperative
The light sensor is malfunction-
ing. The headlamps switch on
automatically.
Contact an authorized Mercedes-Benz Center
immediately.
To switch off the headlamps (U.S. vehicles only):
In the control system, set lamp operation to manual
mode (
page 134).
Switch on headlamps using the exterior lamp switch.
Page 348 of 426

348 Practical hintsWhat to do if ...Left display
Right display
Possible cause/
consequence
Possible solution
.
Low Beam
Left
The left low-beam lamp is
malfunctioning.
Contact an authorized Mercedes-Benz Center as soon as
possible.
Low Beam
Right
The right low-beam lamp is
malfunctioning.
Contact an authorized Mercedes-Benz Center as soon as
possible.
Marker Lamp
Front Left
The front left side marker lamp
is malfunctioning.
Replace the bulb as soon as possible.
Marker Lamp
Front Right
The front right side marker
lamp is malfunctioning.
Replace the bulb as soon as possible.
Marker Lamp
Rear Left
The rear left side marker lamp
is malfunctioning.
Replace the bulb as soon as possible.
Marker Lamp
Rear Right
The rear right side marker lamp
is malfunctioning.
Replace the bulb as soon as possible.
Parking Lamp
Front Left
Auxiliary Bulb On
The left front parking lamp is
malfunctioning. An auxiliary
bulb is being used.
Contact an authorized Mercedes-Benz Center as soon as
possible.
Parking Lamp
Front Right
Auxiliary Bulb On
The right front parking lamp is
malfunctioning. An auxiliary
bulb is being used.
Contact an authorized Mercedes-Benz Center as soon as
possible.
Page 349 of 426

349 Practical hints
What to do if ...
Left display
Right display
Possible cause/
consequence
Possible solution
.
Reverse Lamp
Right
The right backup lamp is
malfunctioning.
Contact an authorized Mercedes-Benz Center as soon as
possible.
Reverse Lamp
Left
The left backup lamp is
malfunctioning.
Contact an authorized Mercedes-Benz Center as soon as
possible.
Tail Lamp
Left
Auxiliary Bulb On
The left tail lamp is malfunc-
tioning. This message will only
appear if a critical number of
LEDs have blown.
Contact an authorized Mercedes-Benz Center as soon as
possible.
Tail Lamp
Right
Auxiliary Bulb On
The right tail lamp is malfunc-
tioning. This message will only
appear if a critical number of
LEDs have blown.
Contact an authorized Mercedes-Benz Center as soon as
possible.
Lights Are
Still On
You have removed the Smart-
Key from the starter switch,
opened the driver’s door and
left the exterior lamps on.
Switch off the headlamps.
Switch off lights
or remove key
The exterior lamp switch is set
to U and you have forgotten
to take out the SmartKey. The
parking lamps remain switched
on.
Switch off the headlamps.
or
Remove the SmartKey from the starter switch.
Page 350 of 426
350 Practical hintsWhat to do if ...Left display
Right display
Possible cause/
consequence
Possible solution
.
Turn Signal
Front Left
Auxiliary Bulb On
The left front turn signal lamp is
malfunctioning. An auxiliary
bulb is being used.
Contact an authorized Mercedes-Benz Center as soon as
possible.
Turn Signal
Front Right
Auxiliary Bulb On
The right front turn signal lamp
is malfunctioning. An auxiliary
bulb is being used.
Contact an authorized Mercedes-Benz Center as soon as
possible.
Turn Signal
Rear Left
Auxiliary Bulb On
The left rear turn signal lamp is
malfunctioning. An auxiliary
bulb is being used.
Contact an authorized Mercedes-Benz Center as soon as
possible.
Turn Signal
Rear Right
Auxiliary Bulb On
The right rear turn signal lamp
is malfunctioning. An auxiliary
bulb is being used.
Contact an authorized Mercedes-Benz Center as soon as
possible.
Page 351 of 426

351 Practical hints
What to do if ...
Left display
Right display
Possible cause/
consequence
Possible solution
H
Please correct
the tire pressure.
The tire inflation pres-
sure is too low in one or
more tires.
Check and correct tire inflation pressure as required
(page 270).
Caution
Tire Defect
One or more tires are
deflating.
The respective tire is in-
dicated in the multi-
function display.
Carefully bring the vehicle to a halt, avoiding abrupt steering and
braking maneuvers. Observe the traffic situation around you.
Temporarily repair tire using TIREFIT (
page 365) or contact
Roadside Assistance. If tire cannot be temporarily repaired using
TIREFIT, contact Roadside Assistance.
Have the damaged wheel repaired or replaced at an authorized
Mercedes-Benz Center.
Check Tires
The tire inflation pres-
sure in one or more
tires is already below
the minimum value.
The respective tire is in-
dicated in the multi-
function display.
Carefully bring the vehicle to a halt, avoiding abrupt steering and
braking maneuvers. Observe the traffic situation around you.
Check the tires. If no damage visible, check and adjust tire pres-
sure as required.
Temporarily repair tire using TIREFIT (
page 365) or contact
Roadside Assistance. If tire cannot be temporarily repaired using
TIREFIT, contact Roadside Assistance.
Have the damaged wheel repaired or replaced at an authorized
Mercedes-Benz Center.
Page 352 of 426
352 Practical hintsWhat to do if ...Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle. You
may lose control of the vehicle. Continued
driving with a flat tire will cause excessive
heat build-up and possibly a fire.
Warning!
G
Have worn or damaged tires replaced in
pairs (front pair or rear pair) and make sure
the tires rotate in the direction specified
(page 262). Otherwise, the driving stabili-
ty of the vehicle will be adversely affected,
especially when driving at high speeds.