2008 MERCEDES-BENZ GL320 TPMS

444 Practical hints
What to do if …
ProblemPossible cause/consequenceSuggested solution
HUSA only:
Combination low tire
pressure/TPMS malfunction
telltale for the TPMS illuminates
continuously.
Canada only:
Low tire pressure telltale for the
Advanced TPMS* illuminates
continuously.The TPMS (USA only) or Advanced TPMS*
(Canada only) detects a loss of pressure in
at least one tire.Carefully bring the vehicle to a halt,
avoiding abrupt steering and braking
maneuvers. Observe the traffic situation
around you.
Read and observe messages in the
multifunction display.
If the tire inflation pressure in the respec-
tive tire(s) has (have) been corrected, the
combination low tire pressure/TPMS mal-
function telltale goes out after few minutes
driving.
HUSA only:
Combination low tire
pressure/TPMS malfunction
telltale for the TPMS flashes
60 seconds and then stays
illuminated.There is a malfunction in the TPMS.Read and observe messages in the
multifunction display.
Have the TPMS checked by an
authorized Mercedes-Benz Light Truck
Center.
After the malfunction has been remedied
the combination low tire pressure/TPMS
malfunction telltale goes out after few
minutes driving.
164.boo Seite 444 Freitag, 30. März 2007 12:54 12

445 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 fuel filler flap.
If your vehicle has tires of a different size
than the size indicated on the Tire and
Loading Information placard or, if available,
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 tire pressure monitor-
ing system (TPMS) that illuminates a low tire
pressure telltale when one or more of your
tires is significantly underinflated. Accord-
ingly, when the low tire pressure telltale illu-
minates, you should stop and check your
tires as soon as possible, and inflate them to
the proper pressure. Driving on a significant-
ly underinflated tire causes the tire too over-
heat 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 TPMS is not a substitute for
proper tire maintenance, and it is the driv-
er’s responsibility to maintain correct tire
pressure, even if underinflation has not
reached the level to trigger illumination of
the TPMS low tire pressure telltale.USA only:
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate
when the system is not operating properly.
The TPMS malfunction indicator is com-
bined 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 subse-
quent 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.
TPMS malfunctions may occur for a variety
of reasons, including the installation of in-
compatible replacement or alternate tires or
wheels on the vehicle that prevent the TPMS
from functioning properly. Always check the
TPMS malfunction telltale after replacing
one or more tires or wheels on your vehicle
to ensure that the replacement or alternate
tires and wheels allow the TPMS to continue
to function properly.
164.boo Seite 445 Freitag, 30. März 2007 12:54 12

464 Practical hints
What to do if …
Display messagePossible cause/consequencePossible solution
Check tires,
then restart
Run Flat Indicator.There was a warning message about a
loss in the tire inflation pressure and
the Run Flat Indicator has not been
restarted yet.Make sure that the correct tire inflation pressure is set
for each tire.
Then restart the Run Flat Indicator (page 397).
Run Flat Indicator
InoperativeThe Run Flat Indicator is malfunction-
ing.Have the Run Flat Indicator checked by an authorized
Mercedes-Benz Light Truck Center.
Tire Pressure
Check TiresThe Run Flat Indicator indicates that
the pressure is too low in one or more
tires.Carefully bring the vehicle to a halt, avoiding abrupt
steering and braking maneuvers. Observe the traffic sit-
uation around you.
Check and adjust tire inflation pressure as required
(
page 395).
If necessary, replace the wheel (page 519).
Reactivate the Run Flat Indicator after adjusting the tire
inflation pressure values (
page 397).
Tire pressure
displayed after
driving for
a few minutes.Vehicles with Advanced TPMS*:
The tire inflation pressure is being
checked.Drive the vehicle for a few minutes.
164.boo Seite 464 Freitag, 30. März 2007 12:54 12

465 Practical hints
What to do if …
Display messagePossible cause/consequencePossible solution
Tire Pressure Monitor
InoperativeThe TPMS or Advanced TPMS* is
malfunctioning.Have the TPMS or Advanced TPMS* checked by an
authorized Mercedes-Benz Light Truck Center.
Tire Pressure Monitor
Inoperative
No Wheel SensorsThere are wheels without appropriate
wheel sensors mounted (e.g. winter tires).Have the TPMS or Advanced TPMS* checked by an
authorized Mercedes-Benz Light Truck Center.
Have the wheel sensors installed by an authorized
Mercedes-Benz Light Truck Center.
Tire Pressure Monitor
Wheel Sensor MissingVehicles with Advanced TPMS*:
One or more sensors are defect (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 by an autho-
rized Mercedes-Benz Light Truck Center.
Have the wheel sensors installed by an authorized
Mercedes-Benz Light Truck Center.
Vehicles with Advanced TPMS*:
One or more wheels without appropriate
wheel sensors 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 by an autho-
rized Mercedes-Benz Light Truck Center.
Have the wheel sensors installed by an authorized
Mercedes-Benz Light Truck Center.
Tire Pressure Monitor
Currently UnavailableThe TPMS or Advanced TPMS* is unable to
monitor the tire pressure due to a nearby
radio interference source.As soon as the causes of the malfunction have been
removed, the TPMS or Advanced TPMS* automati-
cally becomes active again after a few minutes
driving.
164.boo Seite 465 Freitag, 30. März 2007 12:54 12

484 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
HTire Pressure(s)
Please CorrectVehicles with Advanced TPMS*:
The pressure is too low in one or
more tires.Check and correct tire inflation pressure as
required.
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.
Caution: Tire DefectOne or more tires are deflating.
Vehicles with Advanced TPMS*:
The respective tire is indicated in
the multifunction display.Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
If necessary, change the wheel.
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.
164.boo Seite 484 Freitag, 30. März 2007 12:54 12

485 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
HTire Pressure
Check TiresThe tire pressure in one or more tires is
already below the minimum value.Carefully bring the vehicle to a halt, avoid-
ing abrupt steering and braking maneuvers.
Check and adjust tire pressure as required
(
page 395).
If necessary, change the wheel
(
page 519).
Check TiresThe tire pressure in one or more tires is
already below the minimum value.
Vehicles with Advanced TPMS*:
The respective tire is indicated in the
multifunction display.Carefully bring the vehicle to a halt, avoid-
ing abrupt steering and braking maneuvers.
Check and adjust tire pressure as required
(
page 395).
If necessary, change the wheel
(
page 519).
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.
164.boo Seite 485 Freitag, 30. März 2007 12:54 12

526 Practical hints
Flat tire
Lowering the vehicle
Vehicles with scissors-type jack:
Attach ratchet to vehicle jack in such a
way that the wordDOWN can be seen.
Lower the vehicle until its resting fully
on its own weight.
Vehicles with screw-type jack:
Turn crank counterclockwise.
Vehicles with scissors-type jack:
Turn ratchet in Direction of DOWN.
Remove the jack.
1-5Wheel bolts
Tighten the five wheel bolts evenly, fol-
lowing the diagonal sequence illustrat-
ed (1 to 5), until all bolts are tight.
Observe a tightening torque of
110 lb-ft (150 Nm).
Store jack and all other vehicle tool kit
items back into the storage well.
Warning!G
Have the tightening torque checked after
changing a wheel. The wheels could come
loose if they are not tightened to a torque of
110 lb-ft (150 Nm).
iThe removed road wheel cannot be stored in
the spare wheel well under the cargo compart-
ment floor, but should be transported in the car-
go compartment wrapped in a protective cover.
Vehicles with TPMS or Advanced TPMS*:
Do not activate the tire inflation pressure moni-
tor until a full size wheel/tire with functioning
sensor has been placed back into service on the
vehicle.
164.boo Seite 526 Freitag, 30. März 2007 12:54 12

573 Index
Battery, Vehicle 528
Charging 535
Disconnecting and connecting 530
Jump starting 536
Removing and installing 530
Bead 416
Beverage holder see Cup holder
Bi-Xenon headlamps* see headlamps
Bolts, Spare wheel 494
Brake fluid 564
Checking 376
Messages in the multifunction
display 469
Brake lamp
Cleaning lenses 429
Messages in the multifunction
display 477
Replacing bulbs 511
Brake pads 348
Messages in the multifunction
display 467
Brakes 348
Warning lamp 437
Break-in period 346
Bulbs, replacing see Replacing bulbsButton for Voice control* system 30,
156
C
California retail buyers and lessees,
Important notice for 11
Camera see Rear view camera*
Can holder see Cup holder
Capacities and recommended
fuel/lubricants 562
Card holder 33, 37, 320
Cargo compartment cover blind 310
Cargo net* 312
Cargo tie-down rings 302
Carpets, Cleaning 433
Carriers* 295
Catalytic converter
(gasoline engine) 371
CD changer 165, 315
CD player 165
Center console
Lower part 33
Upper part (Vehicles with
enhanced off-road package*) 32
Upper part (Vehicles without
enhanced off-road package*) 31Central locking
Automatic 128
Locking/unlocking from the
inside 128
Switch 128
Certification label 550
CHECK ENGINE malfunction indicator
lamp 439, 440
Checking tire pressure electronically with
the Advanced Tire Pressure Monitoring
System (Advanced TPMS)*,
(Canada only) 401
Checking tire pressure electronically with
the Tire Pressure Monitoring System
(TPMS), (USA only) 398
Checklist
Off-road driving 357
Returning from off-road driving 363
164.boo Seite 573 Freitag, 30. März 2007 12:54 12