Page 360 of 458
358 Practical hintsWhat to do if …?Tire inflation pressure monitor
messagesDisplay
Possible cause
Possible solution
H
TIRE PRES.
CAUTION, TIRE PRES.
One or more tires are deflating.
Carefully bring the vehicle to a halt, avoid-
ing abrupt steering and braking maneu-
vers. Observe the traffic situation around
you
Change the damaged wheel
(page 381).
Have the damaged wheel repaired or re-
placed at an authorized Mercedes-Benz
Center.
TIRE PRES.
CHECK TIRES!
The pressure has fallen significantly in
one or more tires.
TIRE PRESSURE
PLEASE CORRECT
The pressure is too low in one or more
tires.
Check and correct tire inflation pressure
as required (
page 294).
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 361 of 458
359 Practical hints
What to do if …?
Display
Possible cause
Possible solution
H
TIRE PRES., LF
CAUTION, TIRE PRES.
The left front tire is deflating.
Bring the vehicle to a halt, avoiding
abrupt braking maneuvers. Observe the
traffic situation around you.
Change the wheel (
page 381).
Have the damaged wheel repaired or re-
placed at an authorized Mercedes-Benz
Center.
TIRE PRES., LF
CHECK TIRES!
The left front tire inflation pressure is low.
Carefully bring the vehicle to a halt.
Check and correct the tire inflation pres-
sure (
page 294).
If necessary, change the wheel
(page 381).
Have the damaged wheel repaired or re-
placed at an authorized Mercedes-Benz
Center.
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 362 of 458
360 Practical hintsWhat to do if …?Display
Possible cause
Possible solution
H
TIRE PRES., RF
CAUTION, TIRE PRES.
The right front tire is deflating.
Bring the vehicle to a halt, avoiding
abrupt braking maneuvers. Observe the
traffic situation around you.
Change the wheel (
page 381).
Have the damaged wheel repaired or re-
placed at an authorized Mercedes-Benz
Center.
TIRE PRES., RF
CHECK TIRES!
The right front tire inflation pressure is
low.
Carefully bring the vehicle to a halt.
Check and correct the tire inflation pres-
sure (
page 294).
If necessary, change the wheel
(page 381).
Have the damaged wheel repaired or re-
placed at an authorized Mercedes-Benz
Center.
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 363 of 458
361 Practical hints
What to do if …?
Display
Possible cause
Possible solution
H
TIRE PRES., LR
CAUTION, TIRE PRES.
The left rear tire is deflating.
Bring the vehicle to a halt, avoiding
abrupt braking maneuvers. Observe the
traffic situation around you.
Change the wheel (
page 381).
Have the damaged wheel repaired or re-
placed at an authorized Mercedes-Benz
Center.
TIRE PRES., LR
CHECK TIRES!
The left rear tire inflation pressure is low.
Carefully bring the vehicle to a halt.
Check and correct the tire inflation pres-
sure (
page 294).
If necessary, change the wheel
(page 381).
Have the damaged wheel repaired or re-
placed at an authorized Mercedes-Benz
Center.
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 364 of 458
362 Practical hintsWhat to do if …?Display
Possible cause
Possible solution
H
TIRE PRES., RR
CAUTION, TIRE PRES.
The right rear tire is deflating.
Bring the vehicle to a halt, avoiding
abrupt braking maneuvers. Observe the
traffic situation around you.
Change the wheel (
page 381).
Have the damaged wheel repaired or re-
placed at an authorized Mercedes-Benz
Center.
TIRE PRES., RR
CHECK TIRES!
The right rear tire inflation pressure is
low.
Carefully bring the vehicle to a halt.
Check and correct the tire inflation pres-
sure (
page 294).
If necessary, change the wheel
(page 381).
Have the damaged wheel repaired or re-
placed at an authorized Mercedes-Benz
Center.
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 365 of 458
363 Practical hints
What to do if …?
Display
Possible cause
Possible solution
TIRE PRES. MONITOR
REACTIVE AFTER
CORRECTING PRESSURE
There was a tire inflation pressure warning
message.
The yellow warning lamp for the tire infla-
tion pressure monitor comes on and you
have not reactivated the system since the
last tire inflation pressure check.
Activate the tire inflation pressure monitor
after correcting the tire inflation pressure val-
ues (
page 294).
TIRE PRES. MONITOR
REACTIVATED
The tire inflation pressure monitor is using
the current pressure values as the basis for
monitoring.
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 366 of 458

364 Practical hintsWhat to do if …?Display
Possible cause
Possible solution
TIRE PRES. MONITOR
CURRENTLY
UNAVAILABLE
The tire inflation pressure monitor* is un-
able to monitor the tire inflation pressure
due to:
the presence of several when sensors in
the vehicle
excessive wheel sensor temperatures
a nearby radio interference source
unrecognized wheel sensors installed
Remove any extra wheel sensors from the ve-
hicle
As soon as the causes of the malfunction have
been removed, the tire inflation pressure moni-
tor automatically becomes active again.
TIRE PRES. MONITOR
NOT OPERATIONAL DRIVE TO WORKSHOP
The tire inflation pressure monitor or a
wheel sensor is malfunctioning.
Have the tire inflation pressure monitor
checked by an authorized Mercedes-Benz
Center.
A wheel without proper sensor was in-
stalled.
Have the wheels checked.
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 375 of 458
373 Practical hints
Replacing bulbs
Replacing 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 or front fog lamps are
fogged up on the inside as a result of
high humidity, driving the vehicle a dis-
tance with the lights on should clear up
the fogging.
iSubstitute bulbs will be brought into
use when the following lamps malfunc-
tion:
Brake lamps
Rear parking lamps
Rear turn signal lamps
Tail lamps
Observe the messages in the multi-
function display (
page 351).