Page 337 of 457

336 Practical hints
What to do if …
Warning!G
Each tire, including the spare (if provided),
should be checked monthly when cold and
inflated to the inflation pressure recom-
mended by the vehicle manufacturer on the
Tire and Loading Information placard on the
driver’s door B-pillar or, if available, the tire
inflation pressure label on the inside of the
fuel filler flap. If your vehicle has tires of a
different size than the size indicated on the
Tire and Loading Information placard or the
tire inflation pressure label, you should
determine the proper tire inflation pressure
for those tires.
As an added safety feature, your vehicle has
been equipped with a Advanced Tire Pres-
sure Monitoring System (Advanced TPMS)
that illuminates a low tire pressure telltale
when one or more of your tires is signifi-
cantly underinflated. Accordingly, when the
low tire pressure telltale illuminates, you
should stop and check your tires as soon as
possible, and inflate them to the proper
pressure.
Driving on a significantly underinflated tire
causes the tire to overheat and can lead to
tire failure.
Underinflation also reduces fuel efficiency
and tire tread life, and may affect the vehi-
cle’s handling and stopping ability. Please
note that the Advanced TPMS is not a sub-
stitute for proper tire maintenance, and it is
the driver’s responsibility to maintain cor-
rect tire pressure, even if underinflation has
not reached the level to trigger illumination
of the Advanced TPMS low tire pressure tell-
tale.
USA only: Your vehicle has also been
equipped with a Advanced TPMS malfunc-
tion indicator to indicate when the system is
not operating properly. The Advanced TPMS
malfunction indicator is combined with the
low tire pressure telltale. When the system
detects a malfunction, the telltale will flash
for approximately 1 minute and then remain
continuously illuminated. This sequence will
continue upon subsequent vehicle start-ups
as long as the malfunction exists.When the malfunction indicator is
illuminated, the system may not be able to
detect or signal low tire pressure as
intended.
Advanced TPMS malfunctions may occur for
a variety of reasons, including the installa-
tion of replacement or alternate tires or
wheels on the vehicle that prevent the Ad-
vanced TPMS from functioning properly. Al-
ways check the Advanced TPMS
malfunction telltale after replacing one or
more tires or wheels on your vehicle to en-
sure that the replacement or alternate tires
and wheels allow the Advanced TPMS to
continue to function properly.
Page 343 of 457

342 Practical hints
What to do if …
Display messagePossible cause/consequencePossible solution
Tire pressure
displayed
only after
driving for
a few minutesThe tire inflation pressure is being checked.Drive the vehicle for a few minutes.
Tire pressure
monitor
currently
unavailableThe Advanced TPMS is unable to monitor the tire
pressure due to a nearby radio interference source.As soon as the causes for the malfunction are
no longer present, the Advanced TPMS auto-
matically becomes active again after a few
minutes driving.
Tire pressure
monitor
inoperativeThe Advanced TPMS is malfunctioning.Have the Advanced TPMS checked at an
authorized Mercedes-Benz Light Truck Center.
Have the wheel sensors installed by an autho-
rized Mercedes-Benz Light Truck 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 344 of 457

343 Practical hints
What to do if …
Display messagePossible cause/consequencePossible solution
Tire pressure
monitor
inoperative
No wheel
sensorsThere are wheels without appropriate wheel sensors
mounted (e.g. winter tires).Have the Advanced TPMS checked at an
authorized Mercedes-Benz Light Truck Center.
Have the wheel sensors installed at an
authorized Mercedes-Benz Light Truck Center.
Wheel sensor
missingOne or more sensors malfunction (e.g. battery is
empty).
The respective tire is indicated by - - - instead of the
tire inflation pressure in the multifunction display.Have the Advanced TPMS checked at an
authorized Mercedes-Benz Light Truck Center.
Have the appropriate wheel sensors installed at
an authorized Mercedes-Benz Light Truck Cen-
ter.
One or more wheels without appropriate wheel sen-
sors mounted (e.g. spare tire).
The respective tire is indicated by - - - instead of the
tire inflation pressure in the multifunction display.Have the Advanced TPMS checked at an
authorized Mercedes-Benz Light Truck Center.
Have the appropriate wheel sensors installed at
an authorized Mercedes-Benz Light Truck Cen-
ter.
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 457
361 Practical hints
What to do if …
Display symbolDisplay messagesPossible cause/consequencePossible solution
HCaution
Tire defectOne or more tires are deflating.
The respective tire is shown in the
multifunction display.Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
If necessary, change the wheel (page 391).
Check
tiresThe tire pressure in one or more tires
is already below the minimum value.
The respective tire is shown in the
multifunction display.Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Check and adjust tire pressure as required.
If necessary, change the wheel (page 391).
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 457
362 Practical hints
What to do if …
Display symbolDisplay messagesPossible cause/consequencePossible solution
HCorrect the
tire pressureThe pressure is too low in one or more
tires.Check and correct tire inflation pressure as
required (
page 288).
Tire pressure
Caution
Tire defectOne or more tires are deflating.Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
If necessary, change the wheel (page 391).
Tire pressure
Check tiresThe 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.
Check and adjust tire pressure as required.
If necessary, change the wheel (page 391).
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 368 of 457

367 Practical hints
Where will I find...?
Vehicle jack
The vehicle jack is stored in a storage com-
partment under the rear bench seat on the
passenger side.
1Cover
2Tab
3Vehicle jack
Fold the rear bench seat forward
(
page 207).
Open cover1.
Open tab2 and remove vehicle
jack3 from the compartment.Observe the safety guidelines in the “Flat
tire” section (
page 390) when using the
vehicle jack.
Warning!G
The jack is designed exclusively for jacking
up the vehicle under the axle housing. To
help avoid personal injury, use the jack only
to lift the vehicle during a wheel change.
Never get beneath the vehicle while it is
supported by the jack. Keep hands and feet
away from the area under the lifted vehicle.
Always firmly set parking brake and block
wheels before raising vehicle with jack.
Do not disengage parking brake while the
vehicle is raised. Be certain that the jack is
always vertical (plumb line) when in use,
especially on hills. Always try to use the jack
on level surface.
Make sure the jack is positioned correctly
under the axle housing. Always lower the
vehicle onto sufficient capacity jackstands
before working under the vehicle.
If the vehicle is not raised as described, it
could slip off the jack as a result of vibra-
tions (e.g. opening or closing a door or the
tailgate).
Page 370 of 457
369 Practical hints
Where will I find...?
3Cover plate
4Recess
5CatchRemoving the spare wheel
1Mounting screws
Unscrew mounting screws1.
Remove the spare wheel.
For more information on changing the
wheel, see “Flat tire” (
page 390).
iWhen replacing cover plate3, make sure
catch5 engages in recess4.
Make sure tab1 faces downwards when
mounting cover ring2.
For safety reasons, check regularly that the
spare wheel is securely fastened.
Warning!G
Make sure no one is injured when removing
the spare wheel.
Grip wheel from the sides.
Keep hands from beneath the wheel.
iAfter changing the wheel, secure the
damaged wheel on the spare wheel carrier.
Make sure the wheel cannot come loose.
Cover the wheel with the cover plate.
Repair or replace damaged tire as soon as
possible and return spare tire as original spare.
Page 391 of 457

390 Practical hints
Flat tire
When you replace the vehicle’s tires, you
can use the spare wheel as a regular wheel
if:
it is not more than 6 years old
rim and tire are the same model as the
regular wheels
Preparing the vehicle
Park the vehicle in a safe distance from
moving traffic on a hard, flat surface
when possible.
Turn on the hazard warning flasher
(
page 124).
Turn the steering wheel so that the
front wheels are in a straight-ahead
position.
Set the parking brake (page 62).
Move the gear selector lever to park
positionP (
page 162).
Turn off the engine (page 64).
Remove the SmartKey from the starter
switch.
Have any passenger exit the vehicle at
a safe distance from the roadway.
Warning!G
If the spare tire is more than 6 years old or
is not the same model as the regular tires,
have the spare tire replaced with a new tire
at the nearest Mercedes-Benz Light Truck
Center.
Never operate the vehicle with more than
one spare wheel mounted.
Warning!G
G55AMG:
Vehicles with different tire dimensions on
the front and rear axle: rim and tire size of
spare wheel and regular wheel differ.
Handling will be adversely affected when the
spare wheel is used.
Do not exceed the maximum speed of
50 mph (80 km/h).
iOpen door only when conditions are safe to
do so.