Page 275 of 376

275 Practical hints
What to do if …
Left display
Right display
Possible cause
Possible solution
.
L. turn sig. rflectr
The left turn signal in the side mirror
is malfunctioning. This message will
only appear if all light emitting di-
odes have stopped working.
Have the LEDs replaced as soon as possible.
R. turn sig. rflectr
The right turn signal in the side mir-
ror is malfunctioning. This message
will only appear if all light emitting
diodes have stopped working.
Have the LEDs replaced as soon as possible.
Turn signal F, L
Substitute
lamp on!
The left front turn signal lamp is mal-
functioning. A backup bulb has been
brought into use.
Replace the bulb as soon as possible.
Turn signal F, R
Substitute
lamp on!
The right front turn signal lamp is
malfunctioning. A backup bulb has
been brought into use.
Replace the bulb as soon as possible.
Brake light
!
Visit workshop!
Brake lamp illumination is delayed or
lamp is permanently on.
Visit an authorized Mercedes-Benz Center as
soon as possible.
Page 276 of 376

276 Practical hintsWhat to do if …Left display
Right display
Possible cause
Possible solution
.
Brake lamp, L
Substitute
lamp on!
The left brake lamp is malfunction-
ing. A backup bulb has been brought
into use.
Visit an authorized Mercedes-Benz Center
as soon as possible.
Brake lamp, R
Substitute
lamp on!
The right brake lamp is malfunction-
ing. A backup bulb has been brought
into use.
Visit an authorized Mercedes-Benz Center
as soon as possible.
3rd brake light
The high mounted brake lamp is mal-
functioning.
Visit an authorized Mercedes-Benz Center
as soon as possible.
High beam, left
The left high beam lamp is malfunc-
tioning.
Replace the bulb as soon as possible.
High beam, right
The right high beam lamp is malfunc-
tioning.
Replace the bulb as soon as possible.
Fr. left
marker lamp
The front left side marker lamp is
malfunctioning.
Replace the bulb as soon as possible.
Fr. rt marker lamp
The front right side marker lamp is
malfunctioning.
Replace the bulb as soon as possible.
Re. left
marker lamp
The rear left side marker lamp is
malfunctioning.
Replace the bulb as soon as possible.
Re. rt marker lamp
The rear right side marker lamp is
malfunctioning.
Replace the bulb as soon as possible.
Page 281 of 376
281 Practical hints
What to do if …
Left display
Right display
Possible cause
Possible solution
H
Tire pressure
Caution
tire defect!
One or more tires is rapidly deflat-
ing.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Change the wheel (
page 312).
Tire pressure
ChecK tires!
The tire pressure in one or more
tires is already below the minimum
value.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Change the wheel (
page 312).
The tire pressure in one or more
tires is low.
Check and correct tire pressure as required
(page 236).
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.
Page 282 of 376
282 Practical hintsWhat to do if …Left display
Right display
Possible cause
Possible solution
Tire pressure
control activated!
Pressure display after
driving several mins.
The tire pressure is being checked.
H
Reactivate
tire press. monit
.
The tire inflation pressure monitor* is de-
activated.
Activate the tire inflation pressure
monitor* (
page 237).
Tire press. monit.
currently inactive
The tire inflation pressure monitor* is un-
able to monitor the tire pressure due to:
the presence of several wheel sensors
in the vehicle
excessive wheel sensor temperatures
a nearby radio interference source
unrecognized wheel sensors mounted
Check the tire pressure at the next
service station.
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. Contin-
ued driving with a flat tire will cause exces-
sive heat build-up and possibly a fire.
Page 283 of 376
283 Practical hints
What to do if …
Left display
Right display
Possible cause
Possible solution
H
Tire press. monit.
Visit workshop!
The tire inflation pressure monitor is
malfunctioning.
A wheel without proper sensor was
installed.
Have the tire inflation pressure monitor
checked by an authorized Mercedes-Benz
Center.
Change the wheel.
Tire pressure, RL
Caution
tire defect!
The left rear tire is rapidly deflating.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Change the wheel (
page 312).
Tire pressure, RL
Check tires!
The left rear tire pressure is low.
Carefully bring the vehicle to a halt.
Check the tire pressure.
Change the wheel (
page 312).
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.
Page 284 of 376
284 Practical hintsWhat to do if …Left display
Right display
Possible cause
Possible solution
H
Tire pressure, RR
Caution
tire defect!
The right rear tire is rapidly deflat-
ing.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Change the wheel (
page 312).
Tire pressure, RR
Check tires!
The right rear tire pressure is low.
Carefully bring the vehicle to a halt.
Check the tire pressure.
Change the wheel (
page 312).
Tire pressure, FL
Caution
tire defect!
The left front tire is rapidly deflat-
ing.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Change the wheel (
page 312).
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.
Page 285 of 376
285 Practical hints
What to do if …
Left display
Right display
Possible cause
Possible solution
H
Tire pressure, FL
Check tires!
The left front tire pressure is low.
Carefully bring the vehicle to a halt.
Check the tire pressure.
Change the wheel (
page 312).
Tire pressure, FR
Caution
tire defect!
The right front tire is rapidly deflat-
ing.
Carefully bring the vehicle to a halt, avoiding
abrubt steering and braking maneuvers.
Change the wheel (
page 312).
Tire pressure, FR
Check tires!
The right front tire pressure is low.
Carefully bring the vehicle to a halt.
Change the wheel (
page 312).
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.
Page 295 of 376
295 Practical hints
Replacing bulbs
Replacing bulbs
Bulbs
Safe vehicle operation depends on proper
exterior lighting and signaling. It is there-
fore essential that all bulbs and lamp as-
semblies are in good working order at all
times.
Correct headlamp adjustment is extremely
important. Have headlamps checked and
readjusted at regular intervals and when a
bulb has been replaced. See your autho-
rized Mercedes-Benz Center for headlamp
adjustment
iIf the headlamps are fogged up on the
inside as a result of high humidity, driv-
ing the vehicle a distance should clear
up the fogging.
iBackup bulbs will be brought into use
when the following lamps malfunction:
Turn signal lamps
Brake lamps
Parking lamps
Tail lamps