Use the head restraint pad to adjust the head
restraint so that it is as close as possible to the
back of your head.
Before the journey, make sure the head
restraints have been correctly set for each of the
vehicle's passengers (
Ypage 76).
Driver's and front-passenger seat
:Seat fore-and-aft adjustment
;Lumbar support adjustment
=Seat backrest adjustment
?Seat height adjustment
ASeat cushion angle adjustment
BSeat suspension adjustment
iDepending on the seat model, some adjust-
ments may not be available.
You can find information on rotating the front
seats under "Swiveling front seats"
(
Ypage 73).
XTo adjust the seat fore-and-aft position:
pull lever :up.
XSlide the seat forwards or back.
XRelease lever :.
XSlide the seat forwards or back until you hear
it engage.
XTo adjust the backrest: turn handwheel=
towards the front.
The seat backrest moves to a vertical posi-
tion.
XTurn handwheel =towards the rear.
The seat backrest tilts towards the rear.
XTo adjust the seat height: press or pull
lever ?repeatedly until you have reached
the desired seat height.
XTo adjust the seat angle: turn handwheelA
towards the front.
The front of the seat cushion is lowered.
XTurn handwheel Atowards the rear.
The front of the seat cushion is raised.
iThe lumbar support allows you to use the
backrest to increase the support provided to
the lumbar spine.
When the lumbar support is correctly adjus-
ted, it reduces strain on your back while driv-
ing.
XTo adjust the lumbar support: turn hand-
wheel ;upwards.
This increases the support provided to the
lumbar region.
XTurn handwheel ;downwards.
This reduces the support provided to the lum-
bar region.
The seat suspension must be adapted to your
body weight. Adjust the seat suspension only
while the seat is unoccupied.
XTo adjust the seat suspension: take your
weight off the seat.
XUsing handwheel B, set your body weight
(40 to 120 kg) for optimum seat suspension.
The seat suspension will become more rigid
the higher you set the weight. It will then not
move as far.
Swiveling front seats
GWARNING
If the driver's and front-passenger seats are
not engaged facing the direction of travel
while driving, the restraint systems may not
be able to provide the intended protection.
There is an increased risk of injury, possibly
even fatal.
Engage the driver's and front-passenger seats so they are facing the direction of travel
before starting the engine.
!When rotating the seats, make sure that
there is sufficient space to do so.
Seats73
Seats, steering wheel and mirrors
Z
The three red indicator lamps in thecbutton
show the activated heating level 1to 3.
The system automatically switches down from
level 3to level 2after approximately
five minutes.
The system automatically switches down from
level 2to level 1after approximately
ten minutes.
At level 1, the seat heating remains in continu-
ous operation.
XMake sure that the key is in position 1or 2in
the ignition lock.
XTo switch on: press thecbutton repeat-
edly until the desired heating level has been
set.
XTo switch off: press thecbutton repeat-
edly until all indicator lamps go out.
If the indicator lamps of the current heating level
in the cbutton flash, the seat heating has
switched off automatically. In this case, too
many electrical consumers are switched on or
the battery charge is not sufficient. The seat
heating will automatically switch back to the
current heating level when enough on-board
voltage is available again.
Steering wheel
GWARNING
You could lose control of your vehicle if you do the following while driving:
Radjust the driver's seat, head restraint,
steering wheel or mirrors
Rfasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer- ing wheel and mirror and fasten your seat belt
before starting the engine.
GWARNING
If the steering wheel is unlocked while the
vehicle is in motion, it could change position
unexpectedly. This could cause you to lose
control of the vehicle. There is a risk of an
accident.
Before starting off, make sure the steering
wheel is locked. Never unlock the steering
wheel while the vehicle is in motion.
GWARNING
Children could injure themselves if they
adjust the steering wheel. There is a risk of
injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
The steering wheel can still be adjusted if the
key has been removed.
:Steering column fore-and-aft adjustment
;Steering column height
=Lever
Steering wheel77
Seats, steering wheel and mirrors
Z
XTo set the steering wheel:swing lever=
down until it engages.
The steering wheel is unlocked.
XMove the steering wheel to the desired posi-
tion.
XPull lever =up to the stop.
The steering wheel is locked again.
Mirrors
Rear-view mirror
XAnti-glare mode: push anti-glare lever :in
the direction of the arrow.
Exterior mirrors
Important safety notes
GWARNING
The additional mirrors in the exterior mirrors
reduce the size of the image. Objects visible in
the mirrors are closer than they appear. You
could misjudge the distance from road users
driving behind you when changing lanes, for
instance. There is a risk of an accident.
You should therefore always determine the
actual distance from road users driving
behind you, e.g.:
Rby looking over your shoulder
Rby looking in the main mirror in the exterior
mirror.
Adjusting manually
XBefore starting off, manually adjust the exte-
rior mirrors in such a way that you can get a
good overview of road and traffic conditions.
Adjusting electrically
Adjustment buttons and switches for setting the
mirrors
XBefore pulling away, turn the key to position 2
in the ignition lock (Ypage 119).
XPress switch ;to position 1for the left-hand
exterior mirror or to position 2for the right-
hand exterior mirror.
XPress adjustment button :at the top, bot-
tom, right or left.
Adjust the exterior mirrors in such a way that
you can get a good overview of road and traf- fic conditions.
iThe exterior mirrors are automatically
heated at low outside temperatures.
78Mirrors
Seats, steering wheel and mirrors
Useful information
This Operator's Manual describes all models as
well as standard and optional equipment of your
vehicle that were available at the time of going
to print. Country-specific variations are possi-
ble. Note that your vehicle may not be equipped
with all of the described functions. This also
applies to systems and functions relevant to
safety.
Read the information on qualified specialist
workshops (
Ypage 26).
Important safety notes
GWARNING
If you are driving and reach through the steer- ing wheel to operate the adjustment knob,
you could lose control of the vehicle. There is
a risk of an accident and injury.
Only operate the adjustment knobs when thevehicle is stationary. Do not reach through the
steering wheel when driving.
GWARNING
If you operate information systems and com-
munication equipment integrated in the vehi-
cle while driving, you will be distracted from
traffic conditions. You could also lose control
of the vehicle. There is a risk of an accident.
Only operate the equipment when the traffic
situation permits. If you are not sure that this
is possible, park the vehicle paying attention
to traffic conditions and operate the equip-
ment when the vehicle is stationary.
GWARNING
If the instrument cluster has failed or mal-
functioned, you may not recognize function
restrictions in systems relevant to safety. The
operating safety of your vehicle may be
impaired. There is a risk of an accident.
Drive on carefully. Have the vehicle checked
at a qualified specialist workshop immedi-
ately. You must observe the legal requirements for the
country in which you are currently driving when
operating the on-board computer.
The on-board computer display only shows mes-
sages and warnings from certain systems. You
should therefore make sure your vehicle is oper-
ating safely at all times. If the operating safety of
your vehicle is impaired, stop the vehicle as
soon as possible, paying attention to road and
traffic conditions. Then consult a qualified spe-
cialist workshop.
Instrument cluster
Overview
:Instrument cluster on vehicles without
steering wheel buttons
;Instrument cluster in vehicles with steering-
wheel buttons
=Adjustment buttons fand g
?Reset button 9
AService button Ë(engine oil level check)
BMenu button 4
You will find a full overview of the instrument
cluster in the "At a glance" section (
Ypage 32).
The display in the instrument cluster is activated when you:
Ropen the driver's door
Rturn the key to position 2in the ignition lock
Rpress the 9reset button
Rswitch on the lights
Instrument cluster161
On-board computer and displays
Z
If the supply of DEF falls below the reserve range
of 0.8 US gal (3.0l), the StArtS RExxmessage
appears in the display. In addition, the yellow
å DEF indicator lamp lights up in the instru-
ment cluster and three warning tones sound.
In the display, xx
corresponds to the number of
possible remaining engine starts (16to 0).
When the display shows that the number of
remaining starts is 0
, theStArtSIdLEmessage
appears in the display and three warning tones
sound.
In addition, the yellow åDEF indicator lamp
and the ;Check Engine indicator lamp light
up in the instrument cluster and three warning
tones sound.
The engine management only allows speeds of
up to 5 mph (8 km/h).
Add at least 1.5 US gal (5.5 l) of DEF
(
Ypage 129).
The display message only disappears when the
vehicle is stationary, at the latest after
20 seconds as soon as you switch on the ignition or start the engine after refueling.
Vehicles with steering wheel buttons
If the supply of DEF is less than 1.5 US gal
(5.5 l), the Check Diesel Exhaust Fluid
see Operator's Manualmessage appears in
the display.
If the supply of DEF falls below the reserve range
of 0.8 US gal (3.0 l), the XX
startsremainingmessage is displayed.
Three short warning tones also sound.
In the display,xx
corresponds to the number of
possible remaining engine starts (16to 0).
When the display shows that the number of
remaining starts is 0
, theStArtSIdLEmessage
appears in the display.
The yellow ;Check Engine indicator lamp
also lights up and three short warning tones
sound.
The engine management only allows speeds of
up to 5 mph (8 km/h).
Add at least 1.5 US gal (5.5 l) of DEF
(
Ypage 129).
The display message only disappears when the
vehicle is stationary, at the latest after
20 seconds as soon as you switch on the ignition or start the engine after refueling.
On-board computer (vehicles without
steering wheel buttons)
Operating the on-board computer
General notes
The on-board computer is activated as soon as
you turn the key to position 1in the ignition lock.
The on-board computer shows vehicle informa-
tion and settings in the display.
You can control the display and the settings in
the on-board computer using the adjustment
buttons on the instrument cluster.
Standard display
:Odometer
;Trip odometer
=Clock
?Outside temperature or digital speedometer
AFuel gage (Ypage 162)
BSelector lever position or current shift range
with automatic transmission (Ypage 124)
XTo call up the standard display: turn the key
to position 2in the ignition lock.
XPress the 4menu button for longer than
1 second.
The information shown in the display changes
from the outside temperature to the digital
speedometer.
Menus in the on-board computer
Overview
If you wish to exit a menu and go to the standard display:
XPress the 4menu button for longer than
1 second.
or
XDo not press any button for 10 seconds.
The display accepts the changed settings.
On-board computer (vehicles without steering wheel buttons)163
On-board computer and displays
Z
Using thef,g,4or9 adjustment buttons,
you can select the following functions:
RCalling up the service due date
(Ypage 226)
RChecking the oil level (Ypage 220)
RChecking the DEF supply (Ypage 162)
RPreselecting/setting the auxiliary heating
switch-on time (Ypage 108)
RTire pressure monitor (Ypage 253)
RSetting the time (Ypage 164)
RActivating/deactivating Highbeam Assist
(Ypage 171)
RSetting the daytime running lamps
(Ypage 79)
Setting the time
XTurn the key to position 2in the ignition lock.
XPress the 4menu button repeatedly until the
hours figure flashes.
XPress the forg button to set the hour.
XPress the 9reset button.
The minute display flashes.
XPress the forg button to set the minute.
iIf you keep the forg button pressed, the
value will change continuously.
Activating/deactivating Highbeam
Assist
XTurn the key to position 2in the ignition lock.
XPress the 4menu button repeatedly until the
_ indicator lamp flashes and the onorOFFmessage appears in the display.
XUse the forg button to switch Highbeam
Assist on/off.
Switching the daytime running lamps
on/off
If you switch the daytime running lamps on, the
daytime running lamps will automatically light
up when the engine is running.
For safety reasons, it is only possible to change
this setting when the vehicle is stationary. The
factory setting is on
in countries in which day-
time running lamp mode or daytime running
lamps are mandatory.
XTurn the key to position 2in the ignition lock.
XPress the 4menu button repeatedly until the
L indicator lamp flashes and the onorOFFmessage appears in the display.
XPress the forg button to activate or deac-
tivate the daytime running lamps.
iUSA only:
If you turn the light switch to TorL,
the corresponding light switches on. If you
turn the light switch to Ã, the daytime
running lamps remain switched on.
Canada only:
If you turn the light switch to L, the low-
beam headlamps switch on. If you turn the
light switch to TorÃ, the daytime run-
ning lamps remain switched on.
On-board computer (vehicles with
steering wheel buttons)
Operating the on-board computer
Overview
XTo activate the on-board computer: turn
the key to position 1in the ignition lock.
The on-board computer shows vehicle informa-
tion and settings in the display.
You can control the display and the settings in
the on-board computer with the buttons on the
steering wheel.
164On-board computer (vehicles with steering wheel buttons)
On-board computer and displays