
R
to crossing traffic
R when cornering
As aresult, PRE-SAFE ®
Brake ma yneither
give warnings nor intervene in al lcritica lsit-
uations. There is ariskofana ccident.
Alway spaycarefu lattentio ntothe traffi csit-
uatio nand be ready to brake.
In the event of snowfall or heav yrain, detec-
tio nc an be impaired.
Detectio nbythe rada rsensor system is also
impaire dinthe event of:
R dirt on the sensor sorobscured sensors
R interferenc ebyotherradar sources
R strong rada rreflections, for example, in
multi-storey car parks
R an arrow vehicl etravelling in front, e.g .a
motorcycle
R av ehicl etravelling in front on adifferent
line
Detectio nbythe camera system is also
impaire dinthe event of:
R dirt on the camera or if the camera is cov-
ered
R glar eont he camera system ,e.g.f ro mt he
su nb eing lo wint he sky
R darkness
R if:
- pedestrians mov equickly, e.g .into the
path of the vehicle
- the camera system no longe rdetects a
pedestrian as aperso nd ueto special
clothing or othe robjects
- ap edes trian is concealed by other
objects
- the typica loutline of aperso ni sn ot dis-
tinguishabl efromt he background
Following damage to the front end of the vehi- cle ,havet he rada rsensor setting sand oper-
ation checked at aquali fied specialis twork-
shop. This also applie stocollisions at slow
speeds where there is no visible damage to
the front of the vehicle. Following damage to the windscreen, have
the configuratio nand operatio nofthe cam-
era syste mchecked at aquali fied specialist
workshop.
Function X
To activate/deactivate: activate or deac-
tivate PRE-SAFE ®
Brake in the on-board
compute r(Ypage 287).
If the PRE-SAFE ®
Brake is not activated ,the
æ symbo lappears in the multifunction
display.
This functio nwilli ssue awarning if:
R at as peed of approximately 30 km/h or
mor ethe distance maintaine dtothe vehi-
cle travelling in front is insufficient for sev-
era lsec onds
The · distance warning lamp the nlights
up in the instrument cluster.
R at as peed of approximately 7km/h or
more, yo urapidly approach avehicl ein
front
An intermittent warning tone will then
sound and the ·distance warning lamp
will light up in the instrument cluster.
X Brake immediatel ytodefusethe situation.
or
X Take evasive action provided it is safe to do
so.
If there is an increase driskofc ollision, pre-
ventive passenge rprotection measures (PRE-
SAFE ®
)a re activated.
If the risk of collision with the vehicl einfront
remains and yo udonot brake, take evasive
action or accelerate significantly, the vehicle
ma yperform automatic emergency braking,
up to the point of full brake application. Auto- matic emergency braking is not performed
unti limm ediatel yprior to an imminent acci-
dent. 88
Driving safet
ysystemsSafety

Problem
Possible causes/consequences and
M
MSolutions The engine cannot be
started using the key. The on-board voltage is too low.
X Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
X Check the starter battery and charge it if necessary
(Y page 404).
or
X Jump-start the vehicle (Y page 405).
or
X Consult aqualified specialist workshop. Only for vehicles with
manual transmission:
The engine cannot be
started using the key. The steering lock is mechanically blocked.
X Remove the key and reinsert it into the ignition lock. While doing
this, turn the steering wheel in both directions. The engine cannot be
started using KEYLESS-
GO. The key is in the
vehicle. The vehicle is locked.
X Unlock the vehicle and try to start the vehicle again. There is interference from
apowerful source of radio waves.
X Start your vehicle with the key in the ignition lock. Doors
Important safety notes
United Kingdom only: G
WARNING
When the double locks are activated, the
doors can no longer be opened from the
inside. People in the vehicle can no longer get out, e.g. in hazardous situations. There is a
risk of injury.
Therefore, do not leave any people unsuper-
vised in the vehicle, particularly children, eld-
erly people or people in need of special assis-
tance. Do not activate the double lock when
people are in the vehicle.
If the vehicle has been locked from the out-
side, the double lock function is activated as
standard. It is then not possible to open the
doors from inside the vehicle. You can deac- tivate the double lock function by deactivat-
ing the interior motion sensor (Y page 91).
The doors can then be opened from the inside after the vehicle has been locked from the
outside.
The anti-theft alarm system is triggered if thedoor is opened from the inside. Switch off the
alarm (Y page 89).
All countries: G
WARNING
If children are left unsupervised in the vehicle, they could:
R open doors, thereby endangering other per-
sons or road users
R get out and be struck by oncomingt raffic
R operate vehicle equipment and become
trapped, for example 100
DoorsOpening and closing

Estate:
you can:
R open and close th etailgate manually from
outside
R open th etailgate manually from inside
(Estat ewithafolding bench seat)
R open and close th etailgate automatically
from outside
R open and close th etailgate automatically
from inside
R limit th eopening angl eofthetailgate
R unlock th etailgate usin gthe emergency
key element Boot lid/tailgate reversing function
The boot lid/tailgat eisequipped with an
automatic reversing feature. It reacts if asolid
object obstructs or restrict sthe boot lid/tail-
gat edurin gthe closin gprocedure .The boot
lid/tailgat eopen sagain automatically. The
automatic reversing function is only an aid
and is no tasubstitut efor your attentiveness
to th eboot lid/tailgat ewhile it is closing. G
WARNING
The reversing function does no treact:
R to soft, light and thin objects, e.g .small fin-
gers
R over th elast 8mmoft heclosin gpath
This mean sthatthe reversing feature cannot
prevent someon ebeingtrapped in these sit-
uations .Ther eisar isk of injury.
When closin gmakes ure that no body parts
are in th eclosin garea.
If someon eistrapped:
R pres sthe F button on th ekey or
R pull or pres sthe remot eoperatin gswitch
on th edriver' sdoor or
R pres sthe closin gorlockin gbutton on the
boot lid/tailgate, or
R pull th ehandle on th eboot lid/tailgate Opening/closin
gfromt heoutside
Opening Handle (example
:Saloon)
X Pres sthe % button on th ekey.
X Saloon: pull handle :.
X Raise th eboot lid.
Estate: if you pull handle :and kee pitinthis
position ,you can open th etailgate manually.
If you releas ethe handle, th etailgate opens
automatically.
Closing Recess (example
:Saloon)
X Pull th eboot lid/tailgat edown using
recess :.
X Estate: let thetailgate drop int othe lock.
X Loc kthe vehicle if necessar ywith the &
button on th ekey (Y page 95 )orwith KEY-
LESS-GO (Y page 95).104
Boot/luggage compartmentOpening and closing

G
WARNING
The reversing function does not react:
R to soft, light and thin objects, e.g. smal lfin-
gers
R over the last4m mofthe closing movement
R during resetting
R when closing the side windo wagain man-
ually immediatel yafter automatic reversing
This means that the reversing function cannot prevent someone being trappe dinthese sit-
uations. There is arisk of injury.
When closing make sure that no parts of the
body are in the closing area .Ifsomeone
become strapped, press the switch to open
the side windo wagain. Opening and closing the side win-
dows
The switches for all side windows are located on the driver's door. There is alsoas witch on
each door for the corresponding side window.
The switches on the driver's door take prec-
edence. :
Front left
; Front right
= Rearr ight
? Rearl eft
X Turn the key to position 1or 2in the ignition
lock.
X To open manually: press and hold the cor-
responding switch. X
To open fully: press the switch beyond the
point of resistance and release it.
Automatic operation is started.
X To close manually: pulland hold the cor-
responding switch.
X To close fully: pullthe corresponding
switch beyond the pressure point.
Automatic operation is started.
X To interrupt automatic operation:
press/pull the corresponding switch again.
i If you press/pull the switch beyond the
point of resistance, automatic operation is
started in the corresponding direction. You
can stop automatic operation by pressing/ pulling again.
i You can continue to operate the side win-
dowsa fter switching off the engine or
removing the key. This function remains
active for five minutes or until the driver's
or front-passenge rdoor is opened.
i The side windows cannot be operated
from the rear when the overrid efeature for
the side windows is activated (Y page76). Convenience opening feature
General notes You can ventilate the vehicl
ebefore you start
driving. To do this, the key is usedtoc arry out
the following functions simultaneously:
R unlock the vehicle
R open the side windows
R open the sliding sunroof or the panorama
sliding sunroof and the roller sunblinds
R switch on the seat ventilation for the driv-
er's seat
i The convenience opening feature can
only be operated using the key. The key
must be in close proximity to the vehicle.
i The "convenience opening" feature is also
available on unlocked vehicles. Side windows
111Opening and closing Z

Problems with the side windows
G
WARNING
If you close aside window again immediately after it has been blocked or reset, the side window
closes with increased or maximum force. The reversing function is then not active. Parts of the
body could be trapped in the closing area in the process. This poses an increased risk of injury or even fatal injury.
Make sure that no parts of the body are in the closing area. To stop the closing process, releasethe switch or push the switch again to reopen the side window. Problem
Possible causes/consequences and
M MSolutions As
ide window cannot
be closed because it is
blocked by objects, e.g.
leaves in the window
guide. X
Remove the objects.
X Close the side window. As
ide window cannot
be closed and you can-
not see the cause. If
as ide window is obstructed during closing and reopens again
slightly:
X Immediately after the window blocks, pull the corresponding
switch again until the side window has closed.
The side window is closed with increased force.
If as ide window is obstructed again during closing and reopens
again slightly:
X Immediately after the window blocks, pull the corresponding
switch again until the side window has closed.
The side window is closed without the anti-entrapment feature. Sliding sunroof
Important safety notes
Your vehicle may be fitted with asliding sun-
roof or apanorama sliding sunroof. In this
section,t he term "sliding sunroof" refers to
both types of sliding sunroof. G
WARNING
While opening and closing the sliding sunroof, body parts in close proximity could become
trapped. There is arisk of injury.
Make sure that no body parts are in close
proximity during the opening and closing pro- cedures. If somebody becomes trapped:
R release the switch immediately, or
R during automatic operation, press the
switch briefly in any direction
The opening or closing procedure will be stop-
ped. G
WARNING
If children operate the sliding sunroof they
could become trapped, particularly if they are left unsupervised. There is arisk of injury.
When leaving the vehicle, always take the key
with you and lock the vehicle. Never leave
children unattended in the vehicle. 114
Sliding sunroofOpening and closing

!
Only open the panorama sliding sunroof if
it is free of snow and ice. Otherwise, mal-
functions may occur.
Do not allowa nything to protrude from the
sliding sunroof. Otherwise, the seals could
be damaged.
i Resonance noises can occur in addition to
the usuala irflow noises when the sliding
sunroof is open. They are caused by minor
pressure fluctuations in the vehicle interior.
Change the position of the sliding sunroof
or open aside window slightly to reduce or
eliminate these noises. Sliding sunroof reversing feature
Your vehicle may be fitted with asliding sun-
roof or apanorama sliding sunroof. In this
section, the term "sliding sunroof" refers to
both types of sliding sunroof.
The sliding sunroof is equipped with an auto- matic reversing feature. If an object blocks or
restrictst he sliding sunroof during the closing
process, the sliding sunroof opens again
automatically. The automatic reversing fea-
ture is, however, only an aid and is no substi-
tute for your attention when closing the slid-
ing roof. G
WARNING
The reversing feature does not react:
R to soft, light and thin objects, e.g. small fin-
gers
R over the last 4mmofthe closing movement
R during resetting
R when closing the sliding sunroof againm an-
ually immediately after automatic reversing
This means that the reversing feature cannot
prevent someone being trapped in these sit-
uations. There is arisk of injury.
When closing make sure that no body parts
are in the closing area. If someone is trapped:
R release the switch immediately or
R press the switch in any direction during the
automatic closing process
The closing process is stopped. Operating the sliding sunroof
Opening and closing Overhead control panel
:
To raise
; To open
= To close/lower
X Turn the key to position 1or 2in the ignition
lock.
X Press or pull the 3switch in the corre-
sponding direction.
i If you press/pull the
3switch beyond
the point of resistance, automatic opera-
tion is started in the corresponding direc-
tion. You can stop automatic operation by
pressing/pulling again.
The sun protection cover automaticallyo pens
along with the sliding sunroof. You can open
or close the sun protection cover manually
when the sliding sunroof is raised or closed.
i You can continue to operate the sliding
sunroof after switching off the engine or
removing the key. This function remains
active for five minutes or until you open a
front door. Sliding sunroof
115Opening and closing Z

Rain-closin
gfeature Whe
nthe key is in position 0in the ignition
lock or is removed ,the panorama sliding sun-
roo fcloses automatically:
R if it starts to rain.
R at extrem eoutsid etemperatures.
R afte rsix hours.
R if there is amalfunction in the voltag esup-
ply
The panorama sliding sunroof remains raised
at the rea rinorder to allo wventilation of the
vehicl einterior.
i If the panorama sliding sunroof is obstruc-
ted when being closed by the rain-closing
feature ,itopens agai nslightly. The rain-
closing feature is then deactivated.
The panorama sliding sunroof doe snot close
if:
R it is raised at the rear.
R it is blocked.
R no rai nisfalling on the are aofthe wind-
screen being monitored by the rai nsensor,
e.g. because the vehicl eisunderabridge. Operating the rolle
rsunblin dfor the
panorama sliding sunroof
Important safety notes G
WARNING
Parts of the bod ycould become trapped
between the rolle rsun blind and frame or slid-
ing sunroof during automatic opening or clos-
ing. There is ariskofi njury.
Whe nopening or closing ,make sure that no
bod yparts are in the sweep of the rolle rsun-
blind.
If someone is trapped:
R release the switch immediately or
R press the switch in any direction during the
automatic opening/closing process The opening/closing process is briefl
ystop-
ped .The rolle rsun blind then returns to its ini-
tia lposition.
The rolle rsun blind shields the vehicl einterior
from sunlight. The two rolle rsunblind scan
only be opened and closed together when the panorama sliding sunroof is closed.
Rolle rsunblin dreversin gfeature The rolle
rsunblind is equipped with an auto-
mati creversing feature .Ifanobject blocks or
restricts the rolle rsun blind during the closing
process ,the rolle rsun blind opens agai nauto-
matically .The automatic reversing feature is,
however, only an ai dand is no substitute for
your attention when closing the rolle rsun-
blind. G
WARNING
The reversing function doe snot react in par-
ticula rtosoft, light and thin objects, e.g. small
fingers .Thism eans that the reversing feature
canno tprevent someone being trapped in
thes esituations. There is ariskofi njury.
Whe nclosing the rolle rsunblind ,make sure
that no bod yparts are in the sweep.
If someone is trapped:
R release the switch immediately or
R press the switch in any direction during the
automatic closing process
The closing process is briefl ystopped .The
rolle rsunblind then returns to its initia lposi-
tion. Sliding sunroof
117Opening and closing Z

Problems with the sliding sunroof
Your vehicle may be fitted with asliding sunroof or apanorama sliding sunroof. In this section,
the term "sliding sunroof" refers to both types of sliding sunroof. G
WARNING
If you close the sliding sunroof again immediately after it has been blocked or reset, the sliding
sunroof closes with increased or maximum force. The reversing feature is then not active. Parts of the body could be trapped in the closing area in the process. This poses an increased risk of
injury or even fatal injury.
Make sure that no parts of the body are in the closing area.
If someone is trapped:
R release the switch immediately or
R press the switch in any direction during the automatic closing process
The closing process is stopped. Problem
Possible causes/consequences and
M MSolutions The sliding sunroof can-
not be closed and you
cannot see the cause. If the sliding sunroof is obstructed during closing and reopens
again slightly:
X Immediately after the sliding sunroof blocks, pull the 3
switch in the overhead control panel down to the point of resist-
ance and hold it until the sliding sunroof is closed.
The sliding sunroof is closed with increased force.
If the sliding sunroof is obstructed again during closing and
reopens again slightly:
X Immediately after the sliding sunroof blocks, pull the 3
switch in the overhead control panel down to the point of resist-
ance and hold it until the sliding sunroof is closed.
The sliding sunroof is closed without the anti-entrapment fea-
ture. Sliding sunroof
119Opening and closing Z