warning MERCEDES-BENZ M-CLASS 2007 Owners Manual

453 Practical hints
What to do if …
When the message
Add 1 qt. engine oil
at next refueling (Canada:
1 liter
)
appears while the engine is running and at
operating temperature, the engine oil level
has dropped to approximately the mini-
mum level.
When this occurs, the warning will first
come on intermittently and then stay on if
the oil level drops further.Visually check for oil leaks. If no obvious oil
leaks are noted, drive to the nearest
service station where the engine oil should
be topped to the required level with an ap-
proved oil specified in the Factory
Approved Service Products pamphlet.
Display symbol
Display messages
Possible cause/consequence
Possible solution
N
Check eng. oil level
at next refueling
The engine oil level is too low.

Check the engine oil level (
page 360)
(except ML 500), or (
page 358)
(ML 500 only).
USA only:Add 1 qt. engine oil
at next refuelingCanada only:Add 1 liter engine oil
at next refueling
The engine oil level is too low.

Add engine oil (
page 361) and check
the engine oil level (page 360) (except
ML 500), or (
page 358) (ML 500 only).
Engine oil level
cannot be measured
The measuring system is
malfunctioning.

Have the measuring system checked by
an authorized Mercedes-Benz Light Truck
Center.
ProCarManuals.com

454 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause/conse-
quence
Possible solution
N
Engine oil level
Stop car, turn engine off
There is no oil in the engine.
There is a danger of engine
damage.

Carefully bring the vehicle to a halt as soon as
it is safe to do so in a safe location.

Turn off the engine.

Add engine oil (
page 361) and check the en-
gine oil level (
page 360) (except ML 500), or
(
page 358) (ML 500 only).
Engine oil level
Reduce oil level
You have added too much
engine oil. There is a risk of
damaging the engine and/or
the catalytic converter (gaso-
line engine) or the oxidation
catalyst (diesel engine).

Have oil siphoned or drained off.
Observe all legal requirements with respect to
its disposal.
Engine oil level
Visit workshop
The engine oil has dropped to
a critical level.

Check the engine oil level (
page 360) (except
ML 500), or (
page 358) (ML 500 only) and
add oil as required (
page 361).

If you must add engine oil frequently, have the
engine checked for possible leaks.
!
The engine oil level warnings should not be
ignored. Extended driving with the symbol dis-
played could result in serious engine damagethat is not covered by the Mercedes-Benz
Limited Warranty.
ProCarManuals.com

465 Practical hints
What to do if …
Display symbol
Display messages
Possible cause/consequence
Possible solution
H
Tire pressure
Check tires
The pressure is too low in one or
more tires.

Check and correct tire inflation pressure as
required.
Tire pressure
Caution - tire defect
One 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 defect
Vehicles with Advanced TPMS*:
One 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.
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.
ProCarManuals.com

466 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause/consequence
Possible solution
H
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.

Check and adjust tire pressure as
required.

If necessary, change the wheel.
Check tires
Vehicles with Advanced TPMS*:
The 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.
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.
ProCarManuals.com

471 Practical hints
Where will I find ...?
Vehicle jackThe vehicle jack is located underneath the
cargo compartment floor.
Storage position
Remove vehicle jack from its storage
compartment (
page 470).

Turn crank handle in the direction of ar-
row as far as it will go.
!
Vehicles with factory-mounted
running-boards*:
Your vehicle is equipped with a scissors-type
jack (located under the cargo compartment
floor) designed for use with factory-mounted
running boards. Only use this jack when jacking
up vehicles with factory-mounted running boards
as otherwise the vehicle’s underbody can be
damaged. See separate instructions for scis-
sors-type jack.
!
To prevent damage, always disengage the
strap of the securing hook and lower the cargo
compartment floor (
page 469) before closing
the tailgate.
Warning!
G
The jack is designed exclusively for jacking
up the vehicle at the jack take-up brackets
built into both sides of the vehicle. 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 the 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 a level surface.
Make sure that the jack arm is fully seated
in the jack take-up bracket. Always lower
the vehicle onto jackstands of sufficient
capacity before working under the vehicle.

ProCarManuals.com

473 Practical hints
Where will I find ...?
Minispare wheel (except ML 63 AMG)The Minispare wheel is located underneath
the cargo compartment floor
(
page 469).
Removing Minispare wheel
1Minispare wheel
2Towing eye bolt
3Alignment bolt
4Retaining screw
5Wheel bolt wrenchFor access the minispare wheel, see “Vehi-
cle tool kit” (
page 469).

Loosen retaining screw2 by turning it
counterclockwise.

Remove Minispare wheel1.
Warning!
G
The dimensions of the Minispare wheel are
different from those of the road wheels. As
a result, the vehicle handling characteristics
change when driving with a Minispare wheel
mounted. Adapt your driving style accord-
ingly.
The Minispare wheel is for temporary use
only. When driving with a Minispare wheel
mounted, ensure proper tire inflation
pressure and do not exceed a vehicle speed
of 50 mph (80 km/h).
Drive to the nearest Mercedes-Benz Light
Truck Center as soon as possible to have the
Minispare wheel replaced with a regular
road wheel.
Never operate the vehicle with more than
one spare wheel mounted.
Do not switch off the ESP
® when a
Minispare wheel is mounted.
i
For information on how to mount the
Minispare wheel, see “Mounting the spare
wheel” (
page 498).
i
Remove Minispare wheel to gain access to
remaining tools in the vehicle tool kit
(
page 469).
ProCarManuals.com

474 Practical hintsWhere will I find ...?Collapsible tire (ML 63 AMG only)The collapsible tire is located underneath
the cargo compartment floor
(
page 469).
Removing the collapsible tire
1Electric air pump
2Collapsible tire
3Vehicle tool kit storage well casing
4Alignment bolt
5Towing eye bolt
6Wheel bolt wrenchFor access the collapsible tire, see “Vehi-
cle tool kit” (
page 469).

Remove the vehicle tool kit storage
well casing3.
7Retaining screw

Loosen retaining screw7 by turning it
counterclockwise.

Remove collapsible tire2.
Warning!
G
The dimensions of the collapsible tire are
different from those of the road wheels. As
a result, the vehicle handling characteristics
change when driving with a collapsible tire
mounted. Adapt your driving style accord-
ingly.
The collapsible tire is for temporary use
only. When driving with a collapsible tire
mounted, ensure proper tire inflation
pressure and do not exceed a vehicle speed
of 50 mph (80 km/h).
Drive to the nearest Mercedes-Benz Light
Truck Center as soon as possible to have the
collapsible tire replaced with a regular road
wheel.
Never operate the vehicle with more than
one collapsible tire mounted.
Do not switch off the ESP
® when a
collapsible tire is mounted.
i
For information on how to mount the
collapsible tire, see “Mounting the spare wheel”
(
page 498).
i
Remove collapsible tire to gain access to
remaining tools in the vehicle tool kit
(
page 469).
ProCarManuals.com

479 Practical hints
Resetting activated head restraints
Resetting activated head restraints
If the active head restraints have been trig-
gered in a rear-end collision, the active
head restraints must be reset. Otherwise,
the active head restraints cannot offer any
additional protection in the event of anoth-
er rear-end collision.
You can tell that the head restraints have
been activated when they have been
moved forward and cannot be adjusted.
1Reset tool
2Active head restraint

Take the reset tool1 out of the
Mercedes-Benz vehicle literature
pouch.

Guide reset tool1 into the rectangu-
lar opening of the active head
restraint2.

Press reset tool1 downward in direc-
tion of arrow until you hear the head re-
straint release mechanism audibly
disengage.

Pull out reset tool1.

Firmly press the active head restraint
cushion backward towards the head re-
straint cover in direction of arrow until
it engages.

Repeat this procedure on the active
head restraint for the second front
seat.

After resetting the active head
restraints store the reset tool1 in the
Mercedes-Benz vehicle literature
pouch.
For information on active head restraints,
see “Active head restraint” (
page 80).
For information on head restraint adjust-
ment, see “Seats” (
page 43).
i
For your convenience, we recommend that
you have this work carried out by an authorized
Mercedes-Benz Light Truck Center.
You will find the reset tool for manually operating
the active head restraints in the Mercedes-Benz
vehicle literature pouch.Warning!
G
For safety reasons, have the active head re-
straints checked by an authorized
Mercedes-Benz Light Truck Center after a
rear-end collision.
Warning!
G
When pushing back the head restraint cush-
ion, take care that your fingers do not be-
come caught between the head restraint
cushion and the cover. Failing to do so may
lead to injury.!
Be careful not to damage upholstery.
ProCarManuals.com

480 Practical hintsReplacing SmartKey batteriesIf the batteries in the SmartKey or the
SmartKey with KEYLESS-GO* are dis-
charged, the vehicle can no longer be
locked or unlocked. It is recommended to
have the batteries replaced at an autho-
rized Mercedes-Benz Light Truck Center.
Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.Replacement batteries: Lithium, type
CR 2025 or equivalent.

Remove mechanical key1 from the
SmartKey or SmartKey with
KEYLESS-GO* (
page 475).1Mechanical key
2Battery compartment

Insert mechanical key1 into opening.

Press mechanical key1 in direction of
arrow.
The battery compartment2 is
unlatched.

Pull battery compartment2 out of the
SmartKey housing.
Warning!
G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.
i
When inserting the batteries, make sure
they are clean and free of lint.
i
When replacing batteries, always replace
both batteries.
The required replacement batteries are available
at any Mercedes-Benz Light Truck Center.
ProCarManuals.com

484 Practical hintsReplacing bulbs
Notes on bulb replacement

Only use 12-volt bulbs of the same type
and with the specified watt rating.


Switch lights off before changing a bulb
to prevent short circuits.


Always use a clean lint-free cloth when
handling bulbs.


Your hands should be dry and free of oil
and grease.


If the newly installed bulb does not
come on, visit an authorized
Mercedes-Benz Light Truck Center.Have the LEDs and bulbs for the following
lamps replaced by an authorized
Mercedes-Benz Light Truck Center:


the additional turn signal lamps in the
exterior rear view mirrors


the high mounted brake lamp


the Bi-Xenon* low beam lamps


the Bi-Xenon high beam flasher spot-
light*
Warning!
G
Bulbs and bulb sockets can be very hot.
Allow the lamp to cool down before chang-
ing a bulb.
Keep bulbs out of reach of children.
Halogen lamps contain pressurized gas.
A bulb can explode if you:

touch or move it when hot


drop the bulb


scratch the bulb
Wear eye and hand protection.
Because of high voltage in Xenon lamps, it is
dangerous to replace the bulb or repair the
lamp and its components. We recommend
that you have such work done by a qualified
technician.
!
Do not replace the LEDs yourself. You could
otherwise damage the LEDs or parts of the vehi-
cle. Only have the LEDs replaced by a qualified
specialist workshop having the necessary skills
and tools for carrying out the work required.
i
Replacing the bulbs for the front lamps is a
technically complex process. For your conve-
nience, we recommend that you have this work
carried out by an authorized Mercedes-Benz
Light Truck Center.
Have the headlamp adjustment checked
regularly.
ProCarManuals.com