Page 297 of 342

Do not start the vehicle using 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:
RThe 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 a jump-starting device.
RYou may only jump-start the vehicle when the engine and exhaust system are cold.
ROnly jump-start from batteries with a 12 V voltage rating.
ROnly use jumper cables which have a sufficient cross-section and insulated terminal clamps.
RIf 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.
RMake sure that the two vehicles do not touch.
Make sure that:
Rthe jumper cables are not damaged.
Rwhen the jumper cables are connected to the battery, uninsulated sections of the terminal clamp
do not come into contact with other metal sections.
Rthe 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.
XApply the parking brake firmly.
XShift the transmission to position P.
XMake sure that the ignition is switched off. All indicator lamps in the instrument cluster must be
off. When using the SmartKey, turn the SmartKey to position 0in the ignition lock and remove it
(
Ypage 127).
XSwitch off all electrical consumers, e.g. rear window defroster, lighting, etc.
XOpen the hood.
Position number Bidentifies the charged battery of the other vehicle or an equivalent jump-starting
device.
XSlide cover :of positive terminal ;in the direction of the arrow.
XConnect positive terminal ;on your vehicle to positive terminal =of donor battery Busing the
jumper cable, always begin with positive terminal ;on your own vehicle first.
XStart the engine of the donor vehicle and run it at idling speed.
Jump-starting295
Breakdown assistance
Z
Page 298 of 342

XConnect negative terminal?of donor battery Bto ground point Aof your vehicle using the
jumper cable, connecting the jumper cable to battery of other vehicle Bfirst.
XStart the engine.
XBefore disconnecting the jumper cables, let the engine run for several minutes.
XFirst, remove the jumper cables from ground pointA and negative terminal ?, then from pos-
itive clamp ;and positive terminal =. Begineach time at the contacts on your own vehicle first.
XClose cover :of positive clamp ;after removing the jumper cables.
XHave the battery checked at a qualified specialist workshop.
Jump-starting isnot cons idered to bea normal operating condition.
iJumper cables and further information regarding jump-starting can be obtained at any qualified
specialist workshop.
Towing and tow-starting
Important safety notes
GWARNING
Functions relevant to safety are restricted or
no longer availab leif:
Rthe engine isnot running.
Rthe brake system or the power steering is
malfunctioning.
Rthere isa malfunction inthe voltage supply
or the veh icle's electrical system.
If your veh icle is bein g towed, much more
force may benecessary to steer or brake.
There isa risk of an acc ident.
In such cases, use a tow bar. Before to wing,
make sure that the steering moves freely.
GWAR NING
When to wingor tow-starting another veh icle
and its weight isgreater than the permis sible
gross weight of your veh icle, the:
Rthe to wingeye could detach itself
Rthe veh icle/trailer co mbination could roll-
over.
There isa risk of an acc ident.
When to wingor tow-starting another veh icle,
its weight should not begreater than the per-
mis sible gross weight of your veh icle.
Details on the permis siblegross veh icleweight
of your veh iclecan befound on the veh icle iden-
tification plate (
Ypage 330).
!When COLLIS ION PREVENTION ASSIST
PLU S,DIST RONIC PLUS or the HOLD function
is activated, the vehicle brakes automatically
in certain situations.
To avoid damage to the vehicle, deactivate
these systems in the foll owing or similar sit-
uations:
Rwhen towing the vehicle
Rin the car wash
!Only secure the tow rope or tow bar at the
to wing eyes. Otherwise, the vehicle could be
damaged.
!Do not use the to wingeye for recovery, this
could damage the vehicle. If in doubt, recover
the vehicle with a crane.
!When to wing, pull away slowly and
smoothly. If the tractive power is too high, the
vehicles could bedamaged.
!Do not tow with sling-type equipment. This
could damage the vehicle.
!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.
!The vehicle can be towed a maximum of
30 mile s (50km). The to wingspeed 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.
296Towing and tow-starting
Breakdown assistance
Page 299 of 342

!If you tow or tow-start another vehicle, its
weight must not exceed the maximum per-
missible gross vehicle weight of your vehicle.
It is better to have the vehicle transported than
to have it towed away.
If the vehicle has suffered transmission damage,
have it transported on a transporter or trailer.
The automatic transmission must be in position
N when the vehicle is being towed.
The battery must be connected and charged.
Otherwise, you:
Rcannot turn the SmartKey to position 2in the
ignition lock
Rcannot shift the automatic transmission to
position N
In the event of damage to the electrical sys-
tem
If the battery is defective, the automatic trans-
mission 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
(
Ypage 294).
Have the vehicle transported on a transporter or
trailer.
Disarm the automatic locking feature before the vehicle is towed (
Ypage 82). You could other-
wise be locked out when pushing or towing the
vehicle.
Installing/removing the towing eye
Installing the towing eye
GWARNING
The exhaust tail pipe may be very hot. There is
a risk of burns when removing the rear cover.
Do not touch the exhaust pipe. Take particular
care when removing the rear cover.
All vehicles except Mercedes-AMG vehicles
Mercedes-AMG vehicles
The mountings for the removable towing eyes
are located in the bumpers. They are at the front
and at the rear, behind the covers.
XRemove the towing eye from the vehicle tool
kit (Ypage 286).
XPull cover :out of the bumper in the direc-
tion of the arrow by inserting your fingers into
the recess.
XPress the mark on cover ;inwards in the
direction of the arrow.
XRemove cover ;from the opening.
XScrew in the towing eye clockwise as far as it
will go and tighten it.
Towing and tow-starting297
Breakdown assistance
Z
Page 300 of 342

Removing the towing eye
XUnscrew and remove the towing eye.
XPosition cover:on top of the bumper and
press it in at the bottom until it engages.
XAttach cover ;to the bumper and press until
it engages.
XPlace the towing eye in the vehicle tool kit.
Towing a vehicle with both axles on
the ground
It is important that you observe the safety
instructions when towing away your vehicle
(
Ypage 296).
The automatic transmission automatically shifts
to position Pwhen you open the driver's or front-
passenger door or when you remove the Smart-
Key from the ignition lock. In order to ensure
that the automatic transmission stays in posi-
tion Nwhen towing the vehicle, you must
observe the following points:
XMake sure that the vehicle is stationary.
XTurn the SmartKey to position 2in the ignition
lock.
On vehicles with KEYLESS-GO, use the Smart-
Key instead of the Start/Stop button
(
Ypage 128).
XDepress and hold the brake pedal.
XShift the automatic transmission to position
N.
XRelease the brake pedal.
XRelease the parking brake.
XSwitch on the hazard warning lamps
(Ypage 109).
XLeave the SmartKey in position 2in the igni-
tion lock.
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.
Towing the vehicle with the rear axle
raised
!
Vehicles with 4MATIC must not be towed
with either the front or the rear axle raised, as
doing so will damage the transmission.
!Vehicles with automatic transmission must
not be towed with the rear axle raised. The
vehicle/trailer combination may otherwise
swerve or even roll over.
Transporting the vehicle
4MATIC vehicles/vehicles with auto-
matic transmission
!When the vehicle is loaded for transport, the
front and rear axles must be stationary and on
the same transportation vehicle. Positioning
over the connection point of the transport
vehicle is not permitted. The drive train may
otherwise be damaged.
All vehicles
!You may only secure the vehicle by the
wheels, not by parts of the vehicle such as
axle or steering components. Otherwise, the
vehicle could be damaged.
The towing eye can be used to pull the vehicle
onto a trailer or transporter for transporting pur-
poses.
XTurn the SmartKey to position 2in the ignition
lock.
XShift the automatic transmission to position
N.
298Towing and tow-starting
Breakdown assistance
Page 301 of 342

As soonas the vehicle has been loaded:
XPrevent the veh iclefrom rolling away by
applyin g the parking brake.
XShift the automat ictransmission to posi-
tion P.
XTurn the SmartKey to position 0in the ignition
lock and remove it.
XSecure the veh icle.
Notes on 4MATIC vehicles
!
Vehicle s with 4MATIC must not betowed
wit h either the front or the rear axle raised, as
doin g so willdamage the transmission.
If the veh iclehas transmission damage or dam-
age to the front or rear axle, have ittransported
on a transporter or trailer.
In the event ofdama ge to the electrical sys-
tem
If the battery isdefective, the automat ictrans-
mission will belocked inposition P. To shift the
automat ictransmission to position N, you must
pro vide power to the veh icle's electrical system
in the same way as when jump-starting
(
Ypage 294).
Have the veh icletransported on a transporter or
trailer.
Tow-starting (emergency engine
starting)
!
Vehicle swit h automat ictransmission must
not bestarted bytow-starting. This could oth-
erwise damage the transmission.
iYou can find information on "Jump-starting"
under (Ypage 294).
Fuses
Important safety notes
GWAR NING
If you manipulate or bridge a faulty fuse or if
you replace it with a fuse with a higher amper-
age, the electr iccables could beoverloaded.
This could result ina fire. There isa risk of an
acc iden t and injury.
Always replace faulty fuses with the specified
new fuses having the correct amperage.
Blo wn fuses must be replaced with fuses of the
same rating, which you can recognize bythe
color and value. The fuse ratings are listed in the
fuse allocation chart.
The fuse allocation chart islocated inthe vehicle
tool kit inthe stowage compartment under the
trunk floor (
Ypage 286).
If a newly inserted fuse also blows, have the
cause traced and rectified at a qualified special-
ist workshop, e.g. an authorized Mercedes-Benz Center.
!Only use fuses that have been approved for
Mercedes-Benz vehicles and which have the
correct fuse rating for the system concerned.
Otherwise, components or systems could be
damaged.
!Make sure that no moisture can enter the
fuse box when the cover isopen.
!When closing the cover, make sure that it is
lying correctly on the fuse box. Moisture seep-
ing in or dirt could otherwise impair the oper-
ation of the fuses.
The fuses inyour vehicle serve to closedown
faulty circuits. Ifa fuse blows, all the compo-
nents on the circuit and their functions stop
operating.
Before changing a fuse
Pay attention to the important safety notes
(Ypage 299).
XSwit ch off the engine.
XSwitch off all electrical consumers.
XSecure the vehicle against rolling away
(Ypage 146).
XRemo vethe SmartKey from the ignition lock.
or, on vehicles with KEYLESS ‑GO:
XOpen the driver's door.
The on-board electronics now have status 0.
This isthe same as the SmartKey having been
remove d.
XRemovethe Start/Stop button from the igni-
tion lock (Ypage 127).
All indicator lamps in the instrument cluster
must beoff.
Fuses299
Breakdown assistance
Z
Page 302 of 342

The fuses are located in various fuse boxes:
RFuse box in the engine compartment on the
left-hand side of the vehicle, when viewed in
the direction of travel
RFuse box in the trunk on the right-hand side of
the vehicle, when viewed in the direction of
travel
Fuse box in the engine compartment
Pay attention to the important safety notes
(Ypage 299).
GWARNING
When the hood is open and the windshield
wipers are set in motion, you can be injured by
the wiper linkage. There is a risk of injury.
Always switch off the windshield wipers and
the ignition before opening the hood.
XMake sure that the windshield wipers are
turned off.
XOpen the hood (Ypage 274).
XUse a dry cloth to remove any moisture from
the fuse box.
XTo open: take lines :out of the guides.
XMove lines :to one side.
XOpen retaining clamps ;.
XRemove the fuse box cover forwards.
XTo close:check whether the seal is lying cor-
rectly in the cover.
XInsert the cover at the rear of the fuse box into
the retainer.
XFold down the cover and close clamps ;.
XSecure lines:in the guides.
XClose the hood.
Fuse box in the trunk
Pay attention to the important safety notes
(Ypage 299).
XOpen the trunk lid.
XTo open: release cover :at the top right and
left-hand sides with a flat object.
XOpen cover :downwards in the direction of
the arrow.
300Fuses
Breakdown assistance
Page 303 of 342

Important safety notes
GWARNING
If wheels and tires of th ewrong siz eare used,
th ewhee lbrakes or suspension component s
may be damaged. Ther eis aris kof an acci-
dent.
Always replace wheels and tires wit hthose
that fulfill th especification sof th eoriginal
part .
When replacing wheels, mak esur eto use th e
correct:
Rdesignation
Rmodel
When replacing tires ,mak esur eto use th e
correct:
Rdesignation
Rmanufacturer
Rmodel
GWARNIN G
A flat tire severely impairs th edriving ,steer -
ing and braking characteristics of th evehicle.
Ther eis aris kof accident.
Tires without run-flat characteristics :
Rdo notdriv ewit h a flat tire.
Rimmediately replace th eflat tire wit hyour
emergenc yspar ewhee lor spar ewheel, or
consult aqualified specialist workshop.
Tires wit hrun-flat characteristics :
Rpay attention to theinformation and warn -
ing notice son MOExtended tires (tire swit h
run-flat characteristics).
Accessories that are no tapprove dfor your vehi-
cle by Mercedes-Ben zor are no tbein gused cor-
rectl ycan impair th eoperating safety.
Before purchasing and usin gnon-approve d
accessories, visit aqualified specialist work-
sho pand ask about :
Rsuitability
Rlegal stipulation s
Rfactory recommendation sFurther information regarding wheels and tires
can be foun
dunder "Wheel/tire combinations"
(
Ypage 325).
You can ask for information regarding permitte d
wheel-tire combination sat an authorize d
Mercedes-Ben zCenter.
Information on tire pressur ecan be found:
Ron th eTir eand Loading Information placard
on th eB-pillar on th edriver' sside
(
Ypage 311)
Rin th etire pressur etable in th efuel filler flap
(Ypage 144)
Runder "Tir epressure" (Ypage 304)
Operation
Information on driving
Checkth etire pressur ewhen th evehicl eis
heavily laden and adjust prio rto atrip.
While driving ,pay attention to vibrations, noises
and unusual handlin gcharacteristics ,e.g. pull-
ing to on eside .This may indicat ethat th e
wheels or tires are damaged. If you suspec tthat
a tire is defective, reduce your spee dimmedi-
ately. Stop th evehicl eas soo nas possible to
chec kth ewheels and tires for damage. Hidden
tire damag ecould also be causing th eunusual
handlin gcharacteristics .If you fin dno sign sof
damage, hav eth etires and wheels checke dat a
qualified specialist workshop.
When parking your vehicle, mak esur ethat th e
tires do no tget deformed by th ecur bor other
obstacles. If they canno tbe avoided, driv eove r
obstacles suc has curbs slowly and at an obtuse
angle. Otherwise, you may damag eth ewheels
or tires .
Regular checking of wheels and tires
GWARNIN G
Damaged tires can caus etire inflation pres-
sur eloss .As aresult ,you could lose control of
your vehicle. Ther eis aris kof accident.
Chec kth etires regularly for sign sof damag e
and replace any damaged tires immediately.
Operation301
Wheels and tires
Z
Page 304 of 342

Check wheels and tires for damage at least once
a month. Check wheels and tires afterdriving
off-road or on rough roads. Damaged wheels
can cause a loss of tire pressure. Pay particular
attention to damage such as:
Rcuts inthe tires
Rpunctures
Rtears inthe tires
Rbulges on tires
Rdeformation or severe corrosion on wheels
Regularly check the tire tread depth and the
condition of the tread across the whole width of
the tire (
Ypage 302). Ifnecessary, turn the
front wheels to full lock inorder to inspect the
inner sideof the tire surface.
All wheels must have a valve cap to protect the valve against dirtand moisture. Do not mount
anything onto the valve other than the standard
valve cap or other valve caps approved by
Mercedes-Benz for your veh icle. Do not use any
other valve caps or systems, e.g. tire pressure
monitoring systems.
Regularly check the pressure of all the tires par-
ticularly prior to long tr ips.Adjust the tire pres-
sure as necessary (
Ypage 304).
Observe the notes on the emergency spare
wheel (
Ypage 326).
The service lifeof tires depends, among other
things, on the foll owing factors:
Rdriving style
Rtire pressure
Rdistance covered
Notes on tire tread
GWAR NING
In suff icient tire tread willreduce tire traction.
The tire isno longer abletodissipat e water.
This means that on wet road surfaces, the risk
of hydroplaning increases, inparticular where
speed isnot adapted to suit the driving con-
dit ions. There isa risk of acc ident.
If the tire pressure istoo high or too low,tires
may exhibit diff erent levelsof wear at differ-
ent locations on the tire tread. Thus, you
should regularly check the tread depth and
the condition of the tread across the entire
widt h of all tires.
Minimum tire tread depth for:
RSummer tires: âin(3 mm)
RM+S tires: ãin(4 mm)
For safety reasons, replace the tires before
the legally prescribe d limit for the minimum
tire tread depth is reached.
Marking :shows where the bar indicator
(arrow) for tread wear is integrated into the tire
tread.
Treadwear indicators (TWI) are required by law. Six indicators are positioned on the tire tread.
They are vis ibleonce a tread depth of approx-
imately áin (1.6 mm) has been reached. If this
is the case, the tire isso worn that it must be
replaced.
Selecting, mounting and replacing
tires
ROnly mount tires and wheels of the same type
and make.
Exception: itis permissible to install a differ-
ent type or make in the event of a flat tire.
Observe the "MOExtended tires (tires with
run-flat characteristics" section (
Ypage 287).
ROnly mount tires of the correct size onto the
wheels.
RBreak in new tires at moderate speeds for the
first 60 miles(100 km). They only reach their
full performance after this distance.
RDo not drive with tires which have too little
tread depth, as this significantly reduces the
traction on wet roads (hydroplaning).
RReplace the tires after six years at the latest,
regardless of wear.
Observe the notes on the emergency spare
wheel (
Ypage 326).
302Operation
Wheels and tires