
Always install and secure the ball coupling asdescribed. Before every journey, ensure that
the ball coupling is secured with the bolt and
the corresponding spring cotter.
Please observe the manufacturer's operating
instructions for the trailer coupling if a detach-
able trailer coupling is used.
Exceeding the maximum permissible nose-
weight may cause damage to the following:
Ryour vehicle
Rthe trailer
Rthe ball coupling
Rtrailer tow hitch
The vehicle/trailer combination could become
unstable.
If the noseweight used is lower than the mini-
mum permissible noseweight, the vehicle/
trailer combination could also become unstable.
To avoid hazardous situations:
Rmake sure to check the noseweight before
each journey
Ruse a drawbar noseweight as close as possi-
ble to the maximum noseweight
Rdo not exceed the maximum permissible
noseweight
Rdo not use a noseweight lower than the min-
imum permissible trailer drawbar noseweight
When backing up the vehicle towards the trailer,
make sure there is nobody between the trailer
and the vehicle.
The applicable permissible values, which must
not be exceeded, can be fou nd:
Rin your vehicle documents
Ron the type plate of the trailer tow hitch and
trailer
Ron the vehicle identification plate
Couple and uncouple the trailer carefully. If you
do not couple the trailer to the towing vehicle
correctly, the trailer could become detached.
Make sure that the following values are not
exceeded:
Rthe permissible trailer drawbar noseweight
Rthe permissible trailer load
Rthe permissible rear axle load of the towing
vehicle
Rthe maximum permissible gross vehicle
weight of both the towing vehicle and the
trailer When towing a trailer, your vehicle's handling
characteristics will be different in comparison
with when driving without a trailer.
The vehicle/trailer combination:
Ris heavier
Ris restricted in its acceleration and gradient-
climbing capability
Rhas an increased braking distance
Ris affected more by strong crosswinds
Rdemands more sensitive steering
Rhas a larger turning radius
This could impair the handling characteristics.
Adapt your driving style accordingly. Maintain a
safe distance. Drive carefully.
When towing a trailer, always adjust your speed
to the current road and weather conditions. Do
not excee
d the maximum permissible speed for
your vehicle/trailer combination.
You will find the values approved by the manu-
facturer on the vehicle identification plates and
those for the towing vehicle in the "Technical
data" section (
Ypage 297).
General notes
RDo not exceed the legally prescribed maxi-
mum speed for vehicle/trailer combinations
in the relevant country.
This lowers the risk of an accident.
ROnly install an approved trailer coupling on
your vehicle.
Further information on availability and on
installation is available from any authorized
Mercedes-Benz Center.
RThe bumpers of your vehicle are not suitable
for installing detachable trailer couplings.
RDo not install hired trailer couplings or other
detachable trailer couplings on the bumpers
of your vehicle.
RIf you do not need the ball coupling, remove
the ball coupling from the ball coupling
recess. This reduces the risk of damage to the
ball coupling.
iCheck the tire pressures when towing a
trailer. You will find the values in the tire pres-
sure table in the fuel filler flap of the vehicle
(
Ypage 266).
You will find installation dimensions and loads
under "Technical data" (
Ypage 297).
Towing a trailer167
Driving an d parking
Z

or
XTo exit the telephone book:press the~
or % button.
Redialing
The on-board computer saves the last names or
numbers dialed in the redial memory.
XPress the =or; button on the steering
wheel to select the Telmenu.
XPress the6button to switch to the redial
memory.
XPress the 9or: button to select the
desired name or number.
XPress the 6ora button to start dialing.
or
XTo exit the redial memory: press the~
or % button.
Assistance menu
Introduction
In the DriveAssistmenu, you have the follow-
ing options:
RShowing the distance display (Ypage 178)
RActivating/deactivating Blind Spot Assist
(Ypage 178)
Showing the distance display
XPress =or; on the steering wheel to
select the DriveAssistmenu.
XPress the9or: button to select Dis‐tance Display.
XPress theabutton.
The DISTRONIC PLUS distance display
appears in the multifunction display
(
Ypage 151).
Activating/deactivating Blind Spot
Assist
XPress =or; on the steering wheel to
select the DriveAssistmenu.
XPress the9or: button to select
Blind Spot Asst.
XPress the abutton.
The current selection is displayed.
XTo activate/deactivate: press theabut-
ton again.
For further information about Blind Spot Assist,
see (
Ypage 154).
Service menu
Example: service menu
In the Servicemenu, you have the following
options:
RCalling up display messages (Ypage 184)
RChecking the tire pressure electronically
(Ypage 270)
RCalling up the service due date
(Ypage 240)
REngine oil, check oil level (Ypage 236)
Settings menu
Introduction
Example: settings menu
In the Sett.menu, you have the following
options:
178Menus and submenus
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
Cruise controlandSPEEDTRONIC Inoper ‐ative
Cruisecontrol and SPEEDTRONI Care malfunctioning .
XVisitaqualified specialist workshop .
Limit
- - -mph
Whiledepressing th eaccelerato rpedal beyon dth epressur epoin t
(kickdown), SPEEDTRONI Ccanno tbe activated.
Cruise Contro l
- - -mph
Acondition for activating cruise control has no tbeen fulfilled .
You hav etried to store aspeed belo w20 mph (30 km/ h), for example.
XIf conditions permit, drive faster than 20 mph (30 km/ h)and store
the speed.
XCheck the activation conditions for cruise control (Ypage 141).
Tires
Display messagesPossible causes/consequences and MSolutions
Tire pressure willbe displayed afterdriving a fewminutes
The tire pressure monitor is measuring the tire pressure.
XDrive on.
The tire pressures appear in the multifunction display after you have
been driving for a few minutes.
TirePress.MonitorInoperativeThe tire pressure monitor is faulty.
XVisit a qualified specialist workshop.
Tire Pressure Moni‐tor Inoperative NoWheel Sensors
The wheels mounted do not have a suitable tire pressure sensor. The
tire pressure monitor is deactivated.
XMount wheels with suitable tire pressure sensors.
The tire pressure monitor is activated automatically after driving for
a few minutes.
198Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
Check TiresThe tire pressurein on eor mor etires has dropped significantly. The
whee lposition is displayed in th emultifunction display.
A warning tone also sounds.
GWARNIN G
Wit htire pressures whic hare to olow, there is aris kof th efollowin g
hazards :
Rthey may burst, especially as th eload and vehicl espeed increase.
Rthey may wear excessivel yand/o runevenly, whic hmay greatl y
impair tire traction .
Rthedrivin gcharacteristics ,as well as steering and braking ,may be
greatl yimpaired.
There is aris kof an accident.
XStop th evehicl ewithout making any sudden steering or braking
maneuvers .Pay attention to th etraffic condition sas you do so.
XSecur eth evehicl eagainst rollin gaway (Ypage 130).
XIf there is aflat tire, inspec tth etires (Ypage 250).
XChec kth etire pressur e (Ypage 268).
XIf necessary, correc tth etire pressure.
Warnin gTir eMal ‐functionThe tire pressur ein on eor mor etires has dropped suddenly. The whee l
position is shown in th emultifunction display.
A warning tone also sounds.
GWARNIN G
If you drive wit h aflat tire, there is aris kof th efollowin ghazards :
Raflat tire affects th eabilit yto steer or brak eth evehicle.
Ryou could lose control of th evehicle.
Rcontinued drivin gwit h a flat tire will caus eexcessive heat build-up
and possibl y afire.
There is aris kof an accident.
XStop th evehicl ewithout making any sudden steering or braking
maneuvers .Pay attention to th etraffic condition sas you do so.
XSecur eth evehicl eagainst rollin gaway (Ypage 130).
XIf there is aflat tire, inspec tth etires (Ypage 250).
Correc tTir ePres‐sur eThe tire pressur eis to olow in at least on eof th etires ,or th etire
pressur edifference between th ewheels is to ogreat.
XChec kth etire pressures at th enext opportunity (Ypage 268).
XIf necessary, correc tth etire pressure.
XRestart th etire pressur emonitor (Ypage 270).
TirePress .Sen ‐sor(s) Missin gThere is no signal from th etire pressur esensor of on eor several
wheels. The pressur eof th eaffecte dtire is no tdisplayed in th emul-
tifunction display.
XHav eth efault ytire pressur esensor replace dat aqualified special -
ist workshop .
Display messages199
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
TirePressure Moni‐tor CurrentlyUnavailable
Due to asource of radi ointerference, no signals can be received from
th ewhee lsensors. The tire pressur emonitor is temporarily malfunc -
tioning .
XDrive on .
The tire pressur emonitor restarts automatically as soo nas th e
problem has been solved.
h
Tir ePressure Warn‐ing ,Tir eMalfunc‐tio n
The tire pressur ein on eor mor etires has dropped suddenly. The whee l
position is shown in th emultifunction display.
A warning tone also sounds.
GWARNIN G
If you drive wit h aflat tire, there is aris kof th efollowin ghazards :
Raflat tire affects th eabilit yto steer or brak eth evehicle.
Ryou could lose control of th evehicle.
Rcontinued drivin gwit h a flat tire will caus eexcessive heat build-up
and possibl y afire.
There is aris kof an accident.
XStop th evehicl ewithout making any sudden steering or braking
maneuvers .Pay attention to th etraffic condition sas you do so.
XSecur eth evehicl eagainst rollin gaway (Ypage 130).
XIf there is aflat tire, inspec tth etires (Ypage 250).
h
Check Tir ePressure
The tire pressur ein on eor mor etires has dropped significantly. The
whee lposition is shown in th emultifunction display.
A warning tone also sounds.
GWARNIN G
Wit htire pressures whic hare to olow, there is aris kof th efollowin g
hazards :
Rthey may burst, especially as th eload and vehicl espeed increase.
Rthey may wear excessivel yand/o runevenly, whic hmay greatl y
impair tire traction .
Rthedrivin gcharacteristics ,as well as steering and braking ,may be
greatl yimpaired.
There is aris kof an accident.
XStop th evehicl ewithout making any sudden steering or braking
maneuvers .Pay attention to th etraffic condition sas you do so.
XSecur eth evehicl eagainst rollin gaway (Ypage 130).
XIf there is aflat tire, inspec tth etires (Ypage 250).
XChec kth etire pressur e (Ypage 268).
XIf necessary, correc tth etire pressure.
h
Correc tTir ePres‐sur e
The tire pressur eis to olow in at least on eof th etires ,or th etire
pressur edifference between th ewheels is to ogreat.
XChec kth etire pressures at th enext opportunity (Ypage 268).
XIf necessary, correc tth etire pressure.
200Display messages
On-board computer and displays

!ABS (Ypage 206)
÷ ESP®(Ypage 207)
å ESP®OFF (Ypage 207)
6 Restraint system (
Ypage 209)
; Check Engine (
Ypage 210)
8 Reserve fuel (
Ypage 210)
? Coolant (
Ypage 210)
· Distance warning signal
(
Ypage 212)
h Tire pressure monitor (
Ypage 213)
Warning and indicator lamps in the instrument cluster203
On-board computer and displays
Z

Tires
ProblemPossible causes/consequences andMSolutions
h
USA only:
The yellow tire pressure
monitor warning lamp
(pressure loss/malfunc-
tion) is lit.
Canada only:
The yellow tire pressure
monitor warning lamp
(pressure loss) is lit.The tire pressure monitor has detected a loss of pressure in at least
one of the tires.
GWARNING
Tire pressures that are too low pose the following hazards:
Rthey may burst, especially as the load and vehicle speed increase.
Rthey may wear excessively and/or unevenly, which may greatly
impair tire traction.
Rthe driving characteristics, as well as steering and braking, may be
greatly impaired.
There is a risk of an accident.
XStop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
XSecure the vehicle against rolling away (Ypage 130).
XObserve the additional display messages in the multifunction dis-
play.
XIf there is a flat tire, inspect the tires (Ypage 250).
XCheck the tire pressure (Ypage 268).
XIf necessary, correct the tire pressure.
h
USA only:
The yellow tire pressure
monitor warning lamp
(pressure loss/malfunc-
tion) flashes for approx-
imately one minute and
then remains lit.The tire pressure monitor is faulty.
GWARNING
The system is possibly unable to recognize or register low tire pres-
sure.
There is a risk of an accident.
XObserve the additional display messages in the multifunction dis-
play.
XVisit a qualified specialist workshop.
Warning and indicator lamps in the instrument cluster213
On-board computer and displays
Z

Useful information
i
This Operator's Manual describes all models
and all standard and optional equipment of
your vehicle available at the time of publica-
tion of the Operator's Manual. Country-spe-
cific differences are possible. Please note
that your vehicle may not be equipped with all
features described. This also applies to
safety-related systems and functions.
iRead the information on qualified specialist
workshops: (Ypage 23).
Important safety notes
GWARNING
If wheels and tires of the wrong size are used, the wheel brakes or suspension components
may be damaged. There is a risk of an acci-
dent.
Always replace wheels and tires with those
that fulfill the specifications of the original
part.
When replacing wheels, make sure to use the
correct:
Rdesignation
Rmodel
When replacing tires, make sure to use the
correct:
Rdesignation
Rmanufacturer
Rmodel
GWarning
A flat tire severely impairs the driving, steer-
ing and braking characteristics of the vehicle.
There is a risk of an accident.
do not drive with a flat tire. Immediately
replace the flat tire with your spare wheel, or
consult a qualified specialist workshop.
Contact an authorized Mercedes-Benz Center if
you require information on tested and recom-
mended wheels and tires for summer and winter
driving. Advice on purchasing and caring for
tires is also available there. Accessories that are not approved for your vehi-
cle by Mercedes-Benz or are not being used cor-
rectly can impair the operating safety.
Before purchasing and using non-approved
accessories, visit a qualified specialist work-
shop and ask about:
Rsuitability
Rlegal stipulations
Rfactory recommendations
Information on the dimensions and types of
wheels and tires for your vehicle can be found in
the "Wheel/tire combinations" section
(
Ypage 284).
Information on air pressure for the tires on your
vehicle can be found:
Ron the tire pressure label on the fuel filler flap
Rin the "Tire pressure" section
iFurther information on wheels and tires can
be obtained at any qualified specialist work-
shop.
Operation
Notes on driving
If the vehicle is heavily loaded, check the tire
pressures and correct them if necessary.
When parking your vehicle, make sure that the
tires do not get deformed by the curb or other
obstacles. If it is necessary to drive over curbs,
speed humps or similar elevations, try to do so
slowly and at an obtuse angle. Otherwise, the
tires, particularly the sidewalls, may be dam-
aged.
Regular checking of wheels and tires
GWARNING
Damaged tires can cause tire inflation pres-
sure loss. As a result, you could lose control of
your vehicle. There is a risk of accident.
Check the tires regularly for signs of damage
and replace any damaged tires immediately.
RRegularly check the wheels and tires of your
vehicle for damage at least once a month, as
well as after driving off-road or on rough
roads. Damage includes bulges and deforma-
tion on tires, cuts, punctures, cracks or
262Operation
Wheels and tires