2014 MERCEDES-BENZ M-Class key

Vehicles with
a"Minispare" emergency
spare wheel Example
:vehicles with AIRMATIC and trailer tow
hitch
0002 Folding wheel chock
0003 Lug wrench
0023 Alignment bolt
0022 Towing eye
0020 Jack
0021 Ratchet wrench
X Lift the cargo compartment floor up
(Y page 342).
X Remove "Minispare" emergency spare
wheel (Y page 436). Flat tire
Preparing the vehicle
Your vehicle may be equipped with:
R MOExtended tires (tires with run-flat
properties) (Y page 382)
Vehicle preparation is not necessary on
vehicles with MOExtended tires.
R a TIREFIT kit (Y page 380)
R an emergency spare wheel (only for certain
countries) (Y page 436)
Information on changing/mounting a wheel
(Y page 421).
X Stop the vehicle on solid, non-slippery and
level ground, as far away as possible from
traffic.
X Switch on the hazard warning lamps. X
Secure the vehicle against rolling away
(Y page 179).
X If possible, bring the fron twheels into the
straight-ahead position.
X Vehicles with the AIRMATIC package:
make sure that highway level is selected
(Y page 207).
X Switch off the engine.
X Vehicles without KEYLESS-GO: remove
the SmartKey from the ignition lock.
X Vehicles with KEYLESS-GO: open the
driver's door.
The on-board electronics now have status
0.T his is the same as the SmartKey having
been removed.
X Vehicles with KEYLESS-GO: remove the
Start/Stop button from the ignition lock
(Y page 158).
X All occupants must get out of the vehicle.
Make sure that they are not endangered as
they do so.
X Make sure that no one is near the danger
area while a wheel is being changed.
Anyone who is not directly assisting in the
wheel change should, for example, stand
behind the barrier.
X Get out of the vehicle. Pay attention to
traffic conditions when doing so.
X Close the driver's door.
X Unload heavy luggage.
i Only operate the tire inflation compressor
using a 12 V socket, even if the ignition is
turned off (Y page 347).
An emergency cut-out ensures that the on-
board voltage does not drop too low. If the
on-board voltage is too low, the power to
the sockets is automatically cut. This
ensures that there is sufficient power to
start the engine. Flat tire
381Breakdown assistance

X
Pull plug 0022with the cable and hose 0020out
of the housing.
X Screw hose 0020onto flange 0021of tire
sealant bottle 0002.
X Place tire sealant bottle 0002head
downwards into recess 0003of the tire
inflation compressor. X
Remove the cap from valve 0014on the faulty
tire.
X Screw filler hose 0015onto valve 0014.
X Insert connector 0022into a 12 V socket in
your vehicle.
Observe the notes on sockets
(Y page 347).
X Turn the SmartKey to position 1in the
ignition lock (Y page 157).
X Press on/of fswitch 0023on the tire inflation
compressor to I.
The tire inflatio ncompressor is switched
on. The tire is inflated.
i First, tire sealant is pumped into the tire.
The pressure can briefly rise to
approximately 500 kPa (5 bar/73 psi).
Do not switch off the tire inflation
compressor during this phase.
X Allow the tire inflation compressor to run
for five minutes. The tire should then have
attained a pressure of at least 180 kPa
(1.8 bar/26 psi).
If at ire pressure of 180 kPa (1.8 ba r/26 psi)
has bee nattained after five minutes:
(Y page 384). If
at ire pressure of 180 kPa (1.8 ba r/26 psi)
has not bee nattained after five minutes:
(Y page 384).
i If tire sealant leaks out, allow it to dry .It
can then be removed like a laye roffilm.
If your clothes are soiled with tire sealant,
have the mcleaned with perchloroethylene
at a dry cleaner as soon as possible.
Tire pressure not reached If
ap ressure of 180 kPa (1.8 ba r/26 psi) has
not bee nachieved afte rfive minutes:
X Switch off the tire inflation compressor.
X Unscrew the filler hose fro mthe valve of
the faulty tire.
X Very slowly drive forwards or reverse
approximately 30 ft (10 m).
X Pump up the tire again.
After a maximum of five minutes the tire
pressure must be at least 180 kPa (1.8 bar/
26 psi). G
WARNING
If the required tire pressure is not reached
after the specified time, the tire is too badly
damaged. The tire sealant cannot repair the
tire in this instance. Damaged tires and a tire
pressure that is too low can significantly
impair the vehicle's braking and driving
characteristics. There is a risk of accident.
Do not continue driving. Contact a qualified
specialist workshop.
Tire pressure reached G
WARNING
At ire temporarily sealed with tire sealant
impairs the driving characteristics and is not
suitable for higher speeds. There is a risk of
accident.
You should therefore adapt your driving style
accordingly and drive carefully. Do not exceed
the specified maximum speed with a tire that
has been repaired using tire sealant. 384
Flat tireBreakdown assistance

special collection point for
used batteries.
! Have the battery checked regularly at a
qualified specialist workshop.
Observe the service intervals in the
Maintenance Booklet or contact a qualified
specialist workshop for more information.
! You should have all work involving the
battery carried out at aqualified specialist
workshop. In the exceptional case that it is
necessary for you to disconnect the battery
yourself, make sure that:
R you switch off the engine and remove the
SmartKey. On vehicles with KEYLESS-
GO, ensure that the ignition is switched
off .C heck that all the indicator lamps in
the instrumentc luster are off.Otherwise,
electroni ccomponents, such as the
alternator, may be damaged.
R you first remove the negative terminal
clamp and then the positive terminal
clamp. Never swap the terminal clamps.
Otherwise, the vehicle's electronic
system may be damaged.
R the transmission is locked in position P
after disconnecting the battery. The
vehicle is secured against rolling away.
You can then no longer move the vehicle.
The battery and the cover of the positive
terminal clamp must be installed securely
during operation.
Comply with safety precautions and take
protective measures when handling
batteries. Risk of explosion.
Fire, open flames and smoking are
prohibited when handling the
battery. Avoid creating sparks.
Battery acid is caustic. Avoid
contact with skin, eyes or clothing. Wear suitable protective clothing,
especially gloves, apron and
faceguard.
Rinse any acid spills immediately
with clear water. Contact a
physician if necessary. Wear eye protection.
Keep children away.
Observe this Operator's Manual.
For safety reasons, Mercedes-Benz
recommends that you only use batteries
which have been tested and approved for
your vehicle by Mercedes-Benz. These
batteries provide increased impact
protection to prevent vehicle occupants from
suffering acid burns should the battery be
damaged in the event of an accident.
In order for the battery to achieve the
maximum possible service life, it must always
be sufficiently charged.
The vehicle battery, like other batteries, can
discharge over time if you do not use the
vehicle. In this case, have the battery
disconnected at a qualified specialist
workshop. You can also charge the battery
with a charger recommended by Mercedes-
Benz.C ontact a qualified specialist workshop
for further information.
Have the battery condition of charge checked
more frequently if you use the vehicle mainly
for short trips or if you leave it standing idle
for a lengthy period. Consult a qualified
specialist workshop if you wish to leave your
vehicle parked for a long period of time.
i Remove the SmartKey if you park the
vehicle and do not require any electrical
consumers. The vehicle will then use very Battery (vehicle)
387Breakdown assistance Z

Do not start the vehicl
eusing a rapid charging device. If your vehicle's battery is discharged,
the engine can be jump-started from another vehicle or from a second battery using jumper
cables. Observe the following points:
R The battery is not accessible in all vehicles. If the other vehicle's battery is not accessible,
jump-start the vehicle using a second battery or ajump-starting device.
R You may only jump-start the vehicle when the engine and exhaust system are cold.
R Do not start the engine if the battery is frozen. Let the battery thaw first.
R Only jump-start from batteries with a 12 V voltage rating.
R Only use jumper cables which have a sufficien tcross-section and insulated terminal clamps.
R If the battery is fully discharged, leave the battery that is being used to jump-start connected
for a few minutes before attempting to start. This charges the battery slightly.
R Make sure that the two vehicles do not touch.
Make sure that:
R the jumper cables are not damaged.
R when the jumper cables are connected to the battery, uninsulated sections of the terminal
clamp do not come into contact with other metal sections.
R the jumper cables cannot come into contact with parts which can move when the engine
is running, such as the V-belt pulley or the fan.
X Secure the vehicle by applying the electric parking brake.
X Shift the transmission to position P.
X Turn the SmartKey to position 0in the ignitio nlock and remove it (Y page 157). On vehicles
with KEYLESS-GO, make sure the ignition is switched off (Y page 158). All indicator lamps
in the instrument cluster must be off.
X Switch off all electrical consumers, e.g. rear window defroster, lighting, etc.
X Open the hood. (Example)
Position number
0021identifies the charged battery of the other vehicle or an equivalent jump-
starting device. 390
Jump-startingBreakdown assistance

!
When towing, pull away slowly and
smoothly. If the tractive power is too high,
the vehicles could be damaged.
! When towing vehicles with KEYLESS-GO,
use the key instead of the Start/Stop
button. Otherwise, the automatic
transmission may shift to position Pwhen
the driver's or front-passenger door are
opened, which could lead to damage to the
transmission.
! Do not tow with sling-type equipment.
This could damage the vehicle.
! Vehicles with differential locks: make
sure the differential locks are in automatic
mode. When towing, the differential locks
must not be switched on. The transmission
may otherwise be damaged.
! The vehicle can be towed a maximum of
30 miles (50km). The towing speed of
30 mph (50 km/h) must not be exceeded.
If the vehicle has to be towed more than
30 miles (50km), the entire vehicle must be
raised and transported.
! If you tow or tow-start another vehicle, its
weight must not exceed the maximum
permissible gross vehicle weight of your
vehicle.
Information on your vehicle's gross vehicle
weight rating can be found on the vehicle
identification plate (Y page 442).
It is better to have the vehicle transported
than to have it towed.
If the vehicle has suffered transmission
damage, have it transported on a transporter
or trailer.
The automatic transmission must be in
position Nwhen the vehicle is being towed. The battery must be connected and charged.
Otherwise, you:
R
cannot turn the SmartKey to position 2in
the ignition lock
R cannot release the electric parking brake
R cannot shift the automatic transmission to
position N
i Deactivate the automatic locking feature
before the vehicle is towed (Y page 276).
You could otherwise be locked out when
pushing or towing the vehicle. Installing/removing the towing eye
Installing the towing eye Example: towing eye mounting covers
0002 Front cover
0003 Back cover
Vehicles with a trailer tow hitch: if possible,
connect the towbar to the trailer tow hitch
(Y page 253).
The brackets for the screw-in towing eyes are
located in the bumpers. They are at the front
and at the rear, under the covers. 392
Towing and tow-startingBreakdown assistance

X
Remove the towing eye from the vehicle
tool kit (Y page 380).
X To open the cover at the front: press the
mark on cover 0002inwards in the direction
of the arrow.
X To open the cover at the rear: insert a
flat, blunt object into the cutout and lever
cover 0003out of the bumper.
X Take cover 0002or0003 off the opening.
X Screw the towing eye in clockwise to the
stop and tighten it.
Removing the towing eye X
Loosen the towing eye and unscrew it.
X Attach cover 0002or0003 to the bumper and
press until it engages.
X Place the towing eye in the vehicle tool kit. Towing the vehicle wit
hthe rear axle
raised
! The ignition must be switched off if you
are towing the vehicle with the rear axle
raised. Intervention by ESP ®
could
otherwise damage the brake system.
Onl ypossible for vehicles without
4MATIC.
X Switch on the hazard warning lamps
(Y page 124).
X Turn the SmartKey to position 0in the
ignition lock and remove the SmartKey
from the ignition lock.
X When leaving the vehicle, take the
SmartKey or the KEYLESS-GO key with you.
When towing your vehicle with the rear axle
raised, it is importan tthat you observe the
safety instructions (Y page 391). Towing
avehicle with both axles on
the ground
It is importan tthat you observe the safety
instructions when towing away your vehicle
(Y page 391).
The automatic transmission automatically
shifts to position Pwhen you open the driver's
or front-passenger door or when you remove
the SmartKey from the ignition lock.
In order to ensure that the automatic
transmission stays in position Nwhen towing
the vehicle, you must observe the following
points:
X Make sure that the vehicle is stationary and
the SmartKey in the ignition lock is in
position 0.
X Turn the SmartKey to position 2in the
ignition lock.
On vehicles with KEYLESS-GO, use the
SmartKey instead of the Start/Stop button
(Y page 158).
X Depress and hold the brake pedal.
X Shift the automatic transmission to
position N.
X Release the brake pedal.
X Release the electric parking brake.
X Leave the SmartKey in position 2in the
ignition lock.
X Switch on the hazard warning lamps
(Y page 124).
i In order to signal a change of direction
when towing the vehicle with the hazard
warning lamps switched on, use the
combination switch as usual. In this case,
only the indicator lamps for the direction of
travel flash. After resetting the
combination switch, the hazard warning
lamp starts flashing again. Transporting the vehicle
! You may only secure the vehicle by the
wheels, not by parts of the vehicle such as Towing and tow-starting
393Breakdown assistance Z

axle or steering components. Otherwise,
the vehicle could be damaged.
The towing eyes or trailer tow hitch can be
used to pull the vehicle onto a trailer or
transporter if you wish to transport it.
X Turn the SmartKey to position 2in the
ignition lock.
X Shift the automatic transmission to
position N.
As soon as the vehicle ha sbeen loaded:
X Prevent the vehicle fro mrolling away by
applying the electric parking brake.
X Shift the automatic transmission to
position P.
X Turn the SmartKey to position 0in the
ignition lock and remove it.
X Secure the vehicle. Information on 4MATIC vehicles
! Vehicles with 4MATIC must not be towed
with either the front or the rear axle raised,
as doing so will damage the transmission.
If the vehicle has transmission damage or
damage to the front or rear axle, have it
transported on a transporter or trailer.
In the event of damage to the electrical
system
If the battery is defective, the automatic
transmission will be locked in position P. To
shift the automatic transmission to position
N, you must provide power to the vehicle's
electrical system in the same way as when
jump-starting (Y page 389).
Have the vehicle transported on a transporter
or trailer. Recovering
avehicle that has become
stuck
! When recovering a vehicle that has
become stuck, pull it as smoothly and evenly as possible. Excessive tractive
power could damage the vehicles.
If the drive wheels have become stuck in
loose or muddy ground, pull the vehicle out
with extreme caution, especially so if the
vehicle is loaded.
Never attempt to recover a vehicle with a
trailer attached.
Pull out the vehicle backwards, if possible
using the tracks it made when it became
stuck. Tow-starting (emergency engine
starting)
! Vehicles with an automatic transmission
must no tbe tow-started. You could
otherwise damage the automatic
transmission.
You can find information on "Jump-starting"
at (Y page 389). Fuses
Important safety notes
G
WARNING
If you manipulate or bridge a faulty fuse or if
you replace it with a fuse with a higher
amperage, the electric cables could be
overloaded. This could result in a fire. There
is a risk of an accident and injury.
Always replace faulty fuses with the specified
new fuses having the correct amperage.
! For the fuse boxes in the engine
compartment and under the rear bench
seat, only use fuses with the suffix "S".
Otherwise, components or systems could
be damaged.
The fuses in your vehicle serve to close down
faulty circuits. If afuse blows, all the
components on the circuit and their functions
stop operating. 394
FusesBreakdown assistance

Blow
nfuses must be replace dwith fuses of
the same rating, which you can recognize by
the color and value. The fuse ratings are listed
in the fuse allocation chart.
If a newly inserted fuse also blows, have the
cause traced and rectified at a qualified
specialist workshop, e.g. an authorized
Mercedes-Ben zCenter. Before changing a fuse
Observe the important safety notes
(Y page 394)
X Secure the vehicle against rolling away
(Y page 179).
X Switch off all electrical consumers.
X Turn the SmartKey to position 0in the
ignition lock and remove it (Y page 157).
On vehicles with KEYLESS-GO, make sure
the ignition is switched off (Y page 158).
All indicator lamps in the instrument cluster
must be off.
The fuses are located in various fuse boxes:
R Fuse box on the front-passenger side of the
dashboard
R Fuse box in the engine compartment on the
right-hand side of the vehicle, when viewed
in the direction of travel
R Fuse box under the rear bench seat
The fuse allocation chart is located in the fuse
box under the rear bench seat (Y page 396).Dashboard fuse box
Observe the important safety notes
(Y page 394)
! Do not use a pointed objec tsuch as a
screwdriver to open the cover in the
dashboard. You could damage the
dashboard or the cover.
! Make sure that no moisture can ente rthe
fuse box when the cover is open. !
When closing the cover, make sure that it
is lying correctly on the fuse box. Moisture
seeping in or dirt could otherwise impair
the operation of the fuses. X
To open: pull cover 0002outwards in the
direction of the arrow and remove it.
X To close: clip in cover 0002on the front of
the dashboard.
X Fold cover 0002inwards until it engages. Fuse box in the engine compartment
Pay attention to the important safety notes
(Y page 394).
! Make sure that no moisture can enter the
fuse box when the cover is open.
! When closing the cover, make sure that it
is lying correctly on the fuse box. Moisture
seeping in or dirt could otherwise impair
the operation of the fuses. Fuses
395Breakdown assistance Z