
Disengaging th
ediffere ntial locks You can disengage the differential lock
sinthe
followin gorder: ;,?, =.
X To simultaneously disengage all differen-
tia
llocks: press switch =.
Yellow activatio nindicator lamps Aand red
function indicator lamps :go out.
After approximately three seconds of normal
driving, ABS, 4ETS, ESP ®
and BA Sare activa-
ted.
The Differential lock sactive ABS
Differential lock sactive ABS
and ESP not available
and ESP not available message disap-
pear sint he multifunction displaya nd the
å!÷warnin glamps in th einstru-
men tcluster go out.
X Shif tthe transfer case to the HIGH RANGE
on-road position (Y page 124).
If red function indicator lamps :do not go out
when disengagin gthe differential locks:
X Observe th etraffic situation.
X Make slight steerin gmovements while the
vehicle is in motion.
Red function indicator lamps :go out when
th ed ifferential lock sare disengaged. Towing
atrailer Importan
tsafety notes G
WARNING
Th eb raking system can overheat if you leave
yourf oot on the brake peda lwhile driving.
This increases the braking distance and could
even caus ethe braking system to fail .There is
ar isk of an accident.
Never use the brake peda lasafootrest. Do
not simultaneously depress both the brake
peda land the accelerator peda lwhile driving. G
WARNING
You coul dlose control of the vehicle/trailer
combination if it begins to swerve .The vehi-
cle/trailer combination coul deven overturn.
There is arisk of an accident.
On no account should you attempt to
straighten out the vehicle/trailer combina-
tion by increasing speed. Decrease your speed and do not countersteer. Brake if nec-
essary.
G
WARNING
If the ballc oupling is not fitted correctly and
the bolts supplied are not tightened to the
specified tightening torque ,the trailer could
come loose. There is arisk of an accident.
Always fit the ballc oupling as described.
Observe the specified tightening torque when fitting the coupling. G
WARNING
If the maximu mpermissible loadf orac arrier
system is exceeded, the carrie rcouldc ome
loos efrom the vehicl eand endange rother
road users. There is arisk of an accident and
injury.
Never exceed the maximu mpermissible load
when using acarrier.
! If you have
atrailer tow hitch retrofitted,
changes to the engine cooling system may be necessary, depending on the vehicl etype.
If you have atrailer tow hitch retrofitted,
observe the anchorage points on the chassis.
Retrofitting atrailer tow hitch is only permissible
if at railer loadiss pecified in yourv ehicledocu-
ments. If this is not the case, then the vehicl eis
not approved for towing atrailer.
For more information, please contact aqualified
specialist workshop.
Exceeding the maximu mpermissible nose-
weight of the trailer drawbar on the ballc oupling
may caus edamage.
Damag emay be caused to the following:
R towing vehicle
R trailer
R ballc oupling
R trailer tow hitch
The vehicle/trailer combination coul dbecome
unstable.
The vehicle/trailer combination coul dalso
become unstable if the noseweight used is lower
than the minimu mpermissible noseweight. Towin
gatrailer
127Driving an dparking Z 

also applies in countries in whic
hthe maximum
permissible spee dfor car/trailer combinations
is greate rtha n1 00 km/h.
When towing atrailer, your vehicle's handling
characteristics will be differen ttowhen driving
without atrailer and th evehicle will consume
mor efuel.
Driving tips R
Maintain agreater distance to the vehicle in
front than when driving without atrailer.
R Avoid braking abruptly. If possible, brake gen-
tly at first to allow the trailer to run on. Then,
increase the braking force rapidly.
R The values given for gradient-climbing capa-
bilities from astandstill refer to sea level.
When driving in mountainous areas, note that
the power output of the engine, and conse-
quently the vehicle's gradient-climbing capa-
bility from astandstill, decrease with increas-
ing altitude.
If the trailer swings from side to side:
X Do not accelerate under any circumstances.
X Do not countersteer.
X Brake, if necessary. Coupling up
atrailer
! Do no
tconnect th etrailer brak esystem (if
th et railer is fitte dwitho ne)d irectly to the
towing vehicle's hydraulic brak esystem,
since this is equipped wit hananti-lock brak-
ing system. Otherwise, neither th ebrakes on
th et ow ing vehicle no rthe brakes on the
trailer will work.
Observ ethe maximum permissible trailer
dimension s(widt hand length).
X Apply th evehicle's parking brake.
X Mak esure that th eautomatic transmission is
in transmission position P.
X Positio nthe trailer on aleve lsurface behind
th ev ehicle.
X Couple up th etrailer.
X Establish th eelectrical connection between
th ev ehicle and th etrailer.
X Chec kthatthe trailer lighting system is work-
ing.
X Push th ecombinatio nswitch upward sand
downwards and check whether th ecorre- sponding tur
nsignal indicator on the trailer is
flashing.
Ac onnected trailer is only detected when the
electrical connection is established correctly
and when the lighting system is working prop-
erly. The function of other systems, such as
ESP ®
also depends on this. Uncoupling
atrailer G
WARNING
If you uncouple atrailer with an engaged over-
run brake, you coul dtrap yourh and between
the vehicl eand the trailer drawbar. This poses
ar isk of injury.
Do not uncouple atrailer with an engaged
overru nbrake.
! Do not disconnect
atrailer with an engaged
overru nbrake. Otherwise, yourv ehiclecould
be damaged by the rebounding of the overrun brake.
X Apply the parking brake.
X Make sure that the automatic transmission is
in transmission position P.
X Secure the vehicl eand trailer against rolling
away.
X Close all doors, including the rear door.
X Remove the trailer cable.
X Uncoupl ethe trailer. Traile
rpower supply
! Yo
uc an connect accessories with amaxi-
mu mp ower consumption of 180 Wtothe
permanent powe rsupply.
Yo um ustn ot charge atrailer battery using the
powe rsupply.
The trailer socket of your vehicl eisequippe dat
the factory with apermanent powe rsupply.
The permanent powe rsuppl yiss upplie dvia
trailer socket pi n9.
Yo uc an find mor einformatio nabout installing
the trailer electrics at aquali fied specialis twork-
shop. Towin
gatrailer
129Driving an dparking Z 

Trailer with 7-pi
nconnect or
General notes Trailer with 7-pi
nconnect or:youc an connect
to the 13-pi nsocke tont he ball coupling using
an adapter or, if necessary ,anadapter cable.
Both can be obtained at aquali fied specialist
workshop.
Fittin gthe adapter !
Mak
esure that there is sufficient cable play
so that the cable cannot become detached
when cornering. X
Open the socket cover.
X Insert the connector with lug :into
groove ;on the socket and turn it clockwise
to the stop.
X Let the cover engage.
X If you are using an adapter cable, secure the
cable to the trailer with cable ties. 130
Towing
atrailerDriving and parking 

Important safety notes
G
WARNING
Operating th eintegrated information systems
and communications equipment in the vehicle
while driving willd istract you from traffic con-
ditions. You coul dthen lose control of the
vehicle. There is arisk of an accident.
Only operate these devices if road traffic con-
ditions permit. If you are unsure about the
surrounding conditions, pullo ver toasafe
location and make entries only while the vehi-
cle is stationary.
You must observe the lega lrequirements for the
country in which you are currently driving when operating the on-board computer. G
WARNING
If the instrument cluster has failed or mal-
functioned, you may not recognise function
restrictions relevant to safety .The operating
safety of yourv ehiclemay be impaired .There
is ar isk of an accident.
Drive on carefully.H ave the vehiclechecked
at aq ualified specialist worksho pimmedi-
ately.
If the operating safety of yourv ehicleis
impaired ,park the vehicl esafel yass oon as pos-
sible. Contact aqualified specialist workshop.
! If
ab lackout lighting setting has been selec-
ted, the instrument cluster lighting is
switched off.
The instrument cluster and the display do not show any information.
The on-board computer show sonly display mes-
sage sorw arnings from certain systems on the
multifunction display.Y ou should therefore
make sure yourv ehicleiso perating safel yatall
times.
For an overview, see the instrument cluster illus-
tration (Y page26). Displays and operation
Instrument cluste
rlighting
The brightness control knob is locate donthe
botto mleftoft heinstrumen tcluster
(Y page 26).
X Turn th ebrightness control knob clockwise or
anti-clockwise.
i The ligh
tsensor on th einstrumen tcluster
automatically control sthe brightness of the
multifunction display.
In daylight, th edisplays in th einstrument
cluste rare no tlit. Re
vc ounter
! Do not drive in the overrevving range. Doing
so will damag ethe engine.
The red band in the rev counter indicates the
engine's overrevving range.
The fue lsuppl yisi nterrupted to protect the
engine when the red band is reached. Outside temperature display
You should pay specia lattention to road condi-
tion swhen temperatures are around freezing
point.
Bear in mind that the outside temperature dis-
play indicates the measured air temperature
and not the road surface temperature.
The outside temperature display is in the multi-
function display (Y page 133).
Changes in the outside temperature are dis-
played after ashort delay. Coolant temperatur
edisplay G
WARNING
If yo uopen the bonnet while the engine is
overheating or while there is afire in the
engine compartment, you coul dcome into
contact with hot gase sorother leaking ser-
vice products. There is adange rofinjury.
Allow an overheating engine to cool down
before opening the bonnet. If there is afire in Displays and operation
131On-boardcomputer and displays
Z 

the engine compartment, leav
ethe bonnet
close dand notify the fir ebrigade.
The coolant temperatur egauge is in the instru-
ment cluste ronthe right-hand side (Y page 26).
Under normal operating conditions and with the specifie dcoolant level ,the coolant temperature
ma yriseto1 20 †.
At high outside temperatures and when driving
in mountainou sterrain, the coolant temperature
ma yrisetot he end of the scale. Operatin
gthe on-board computer
Overview :
Multifunction display
; Switches sound on/off
= Right control panel
? Left control panel
A Back button
X To activate the on-board computer: turn
the key to position 1in the ignition lock
(Y page 96).
You can control the multifunction display and
the settings in the on-board computer using the buttons on the multifunction steering wheel. Left control panel =
; R
Calls up the menu and menu bar 9
: Press briefly:
R Scrolls through lists
R Selects asubmenu or function
R In the Audio Audio menu: selects the
previous or next station, when the preset list or station list is active,
or an audio track
R In the Tel Tel(telephone) menu:
switches to the phone book and
selects aname or telephone num-
ber 9
: Press and hold:
R
In the Audio Audio menu: selects apre-
set list or astation list in the
desired frequency range a R
Confirms selection/displaym es-
sage
R In the Tel
Tel(Telephone) menu:
switches to th etelephone book
and start sdiallin gthe selected
number Right contro
lpanel ~ R
Rejects or end sacall 6 R
Makes or accept sacall
R Switches to the redial memory W
X R
Adjusts the volume 8 R
Mute ? R
Mute 132
Displays and operationOn-board computer and displays 

i
Vehicles for the United Kingdom: this func-
tion is unavailable.
Selects language
X Press the =or; button on the steering
wheel to select the Settings
Settingsmenu.
X Press the :or9 button to select the
Instrument cluster
Instrument cluster submenu.
X Press ato confirm.
X Press :or9 to select the Language:
Language:
function.
You will see the current setting.
X Press ato confirm.
X Press the :or9 button to change the
setting.
X Press ato store the entry.
Time/date Setting the date
X Press the =or; button on the steering
wheel to select the Settings Settingsmenu.
X Press :or9 to select the Time/Date Time/Date
submenu.
X Press ato confirm.
X Press :or9 to select the Date: Date:func-
tion.
You will see the current setting.
X To set the date: pressaagain.
X Press =or; to switch between the
day, month and year.
X Press :or9 to set the day, month or
year.
X Press ato store the entry.
The display shows the selected date.
Setting the time X Press the =or; button on the steering
wheel to select the Settings
Settings menu.
X Press :or9 to select the Time/Date Time/Date
submenu.
X Press ato confirm.
X Press :or9 to select the Time:
Time:func-
tion.
You will see the current setting.
X To set the time: pressaagain.
X Press =or; to switch between hours
and minutes. X
Press :or9 to set the hours or
minutes.
X Press ato store the entry.
The display shows the selected time.
Lights Setting the daytime driving lights
The Daytime driving lights Daytime driving lights function can
only be switched on with the engine switched
off.
X Press the =or; button on the steering
wheel to select the Settings Settingsmenu.
X Press the :or9 button to select the
Lights
Lights submenu.
X Press ato confirm.
X Press the :or9 button to select the
Daytime driving lights
Daytime driving lights function.
If the Daytime
Daytime driving
drivinglights
lightsfunction has
been switched on, the cone of light and the
W symbol are shown in red in the multi-
function display.
X Press ato save the setting.
Further information on daytime driving lights
(Y page 74).
Surround lighting and exterior lighting
delayed switch-off X Press the =or; button on the steering
wheel to select the Settings Settingsmenu.
X Press the :or9 button to select the
Lights
Lights submenu.
X Press ato confirm.
X Press the :or9 button to select the
Surround lighting
Surround lighting function.
When the Surround lighting
Surround lighting function has
been activated, the cone of light is shown in
red in the multifunction display.
X Press ato save the setting.
Activating exterior lighting delayed switch-off
temporarily:
X Before leaving the vehicle, turn the key to
position 0in the ignition lock (Y page 96).
X Turn the key to position 2in the ignition lock
(Y page 96).
Exterior lighting delayed switch-off is deacti-
vated.
Exterior lighting delayed switch-off is reactiva-
ted the next time you start the engine. 138
Menus and submenusOn-boardc
omputer and displays 

i
Depending on your vehicle's equipment,
when the surround lighting and exterio rlight-
ing delaye dswitch-off ar eon, the following
light up:
R side lamps
R dipped-beam headlamps
Switchin gthe interior lighting delayed
switch-off on/off
If yo uactivate the Lighting
Lighting delayed
delayedsw.-off
sw.-off
function, the interio rlighting remains on for
20 second safter yo uremove the key fro mthe
ignition lock.
X Press the =or; button on the steering
whee ltoselect theSettings
Settings menu.
X Press the :or9 button to select the
Lights
Lights submenu.
X Press ato confirm.
X Press the :or9 button to select the
Lighting delaye dsw.-off
Lighting delayed sw.-off function.
If the Lighting delayed sw.-off
Lighting delayed sw.-off function
has been activated, the vehicle interior is dis-
played in red in the multifunction display.
X Press ato save the setting.
Vehicle Activating/deactivating the automatic
locking feature
If you activate the Automatic door locks Automatic door locks
function, the vehicle is centrallyl ockedabov ea
spee dofa pproximately 15 km/h.
X Press the =or; buttononthesteering
whee ltos elect the Settings
Settings menu.
X Press the :or9 buttontos elect the
Vehicle
Vehicle submenu.
X Press ato confirm.
X Press the :or9 button to select the
Automatic doo rlocks
Automatic door locks function.
When the Automatic
Automatic door
doorlocks
locks function is
activated, the vehicle doors are displayed in
red in the multifunction display.
X Press ato save the setting.
For further information on the automatic locking
feature; see (Y page 62). Activating/deactivating the acoustic
locking confirmation
If you swi tchont heAcoustic Acoustic Lock
Lockfunction ,an
acoustic signal sounds when you loc kthe vehi-
cle.
X Press the =or; buttononthesteering
whee ltos elect the Settings
Settings menu.
X Press the :or9 buttontos elect the
Vehicle
Vehicle submenu.
X Press ato confirm.
X Press the :or9 button to select the
Acoustic Lock
Acoustic Lock function.
If the Acoustic Lock
Acoustic Lock function is activated,
the & symbol in the multifunctio ndisplay
lights up red.
X Press ato save the setting.
Heating Auxiliary heating departure time
G
DAN
GER
If th eexhaust pipe is blocke dorsufficient
ventilation is no tpossible, toxic exhaust
fumes can ente rthe vehicle, especially car-
bon monoxide. This is th ecase, e.g. in
enclosed spaces, or if th evehicl eiss tuck in
snow. There is ariskoff atal injuries.
You should switch off th eauxiliary heating in
enclosed spaces whic hdonothav eane xtrac-
tion system, e.g. agarage. If th evehicl eis
stuck in snow and you mus tleav ethe auxiliary
heating running, keep th eexhaust pipe and
th ea rea around th evehicl eclear of snow. To
guarantee asufficien tsupply of fresh air, open
aw indow on th eside of th evehicl eaway from
th ew ind. G
WARNING
When th eauxiliary heating is switched on,
parts of the vehicl ecan become very hot.
Flammable materials such as leaves, grass or twigs may ignite if they come into contact
with:
R hot parts of the exhaust system
R the exhaust gas itself
There is arisk of fire. Menus and submenus
139On-boardcomputer and displays
Z 

Safety systems
Display messages
Possible causes/consequences and
M
MSolutions !÷
ABS, ESP defective
ABS, ESP defective
Visit workshop Visit workshop ABS (Anti-lock Braking System
)and ESP ®
(Electronic Stability Pro-
gram) ar etemporaril yunavailable.
Othe rdriving and driving safety system smayalso be malfunctioning.
In addition, the ÷and! warning lamps light up in the instru-
ment cluster.
Possibl ecauses:
R self-diagnosi sisnot yetcomplete
R the on-board voltag emaybe insufficient
G WARNING
The brake system continue stofunctio nnormally ,but withou tthe
functions listed above .The wheels could therefore lock if yo ubrake
hard, for example.
The steerability and braking characteristics ma ybeseverely affected.
The braking distance ma yincrease in an emergency braking situation.
If ESP ®
is not operational ,ESP ®
is unabl etostabilise the vehicle.
There is an increased ris kofskidding and/or accident.
X Carefully drive on asuitabl estretch of road, making gentle steering
movements at speed sofabove 20 km/h.
If the display message disappears, the functions mentione dabove
ar ea vailable again.
If the display message still appears: X Driv eonc arefully.
X Consult aquali fied specialist workshop. !÷
currently unavaila‐ currently unavaila‐
ble ble See
SeeOwner's
Owner's Man‐
Man‐
ual
ual ABS and ESP
®
arem alfunctioning.
Othe rdriving and driving safety system smayalso be malfunctioning.
In addition, the ÷and! warning lamps light up in the instru-
ment cluster.
G WARNING
The brake system continue stofunctio nnormally ,but withou tthe
functions listed above .The wheels could therefore lock if yo ubrake
hard, for example.
The steerability and braking characteristics ma ybeseverely affected.
The braking distance ma yincrease in an emergency braking situation.
If ESP ®
is not operational ,ESP ®
is unabl etostabilise the vehicle.
There is an increased ris kofskidding and/or accident.
X Driv eonc arefully.
X Consult aquali fied specialist workshop immediately. 142
Displa
ymessagesOn-boar dcomputer and displays