Page 52 of 689

front passenger airbag is enabled or disa‐
bled in accordance with the person in the
front passenger seat.
R The person is sea ted properly with a cor‐
re ctly fastened seat belt.
R The front passenger seat has been mo ved
as far back as possible. Be sure
toalso obse rveth efo llowing fur ther
re lated subjects:
R Child restra int sy stem on the front passenger
seat (/ page77).
R Suitable positioning of thech ild restra int sys‐
te m (/ page57). PRE-SAFE
®
sy stem PRE-
SAFE®
(anticipa tory occupant pr otec‐
tion) PRE-
SAFE®
is able todetect cer tain critical driv‐
ing situations and implement pre-em ptive meas‐
ures toprotect theve hicle occupants. PRE-SAFE
®
can implement thefo llowing meas‐
ures independently of each other:
R Tightening the seat belts on the driver's seat
and front passenger seat.
R Closing the side windo ws.
R Vehicles with sliding sunroof: closethe
sliding sunroof.
R Vehicles with memory function: movethe
front passenger seat toa more favo urable
seat position.
R PRE-SAFE ®
Sound: pr ovided that the multi‐
media sy stem is switched on, generates a
brief noise signal tostimulate the innate pro‐
te ctive mechanism of a person's hea ring.
* NO
TEDama gecaused byobjects in the
fo ot we ll or behind the seat The automatic adjustment of
the seat posi‐
tion may result in damage tothe seat and/or
th e object. #
Stow objects in a suitable place. Re
versing the PRE- SAFE®
sy stem measures If an accident did not occur,
the pre-em ptive
measures that we retak en are reve rsed.
Yo u will need toper form certain settings your‐
self. #
Ifth e seat belt pre-tensioning is not reduced,
mo vethe seat backrest back slightl y.
The locking mechanism releases. Fu
nction of PRE-SAFE ®
PLUS (anticipatory
occupant pr otection plus) PRE-
SAFE®
PLUS can de tect cer tain impacts,
particular lyan imminent rear impact, and take
pre-em ptive measures toprotect theve hicle
occupants. These measures cannot necessarily
pr eve nt an imminent impact.
PRE-SAFE ®
PLUS can implement thefo llowing
measures independently of each other:
R Tightening the seat belts on the driver's seat
and front passenger seat.
R Activating there ar hazard warning lights at a
higher flashing frequenc y. Occupant saf
ety49
Page 87 of 689

Deactivating the
key functions If
yo u do not use theve hicle or a keyfo r an
ex tended pe riod of time, you can reduce the
energy consum ption of there spective key.Todo
so, deactivate theke y functions. #
Todeactivate: presstheß button on the
ke y twice in quick succession.
The key indicator lamp flashes twice brief ly
and lights up once. #
Toactivate: press any button on thekey.
% When theve hicle is star ted with theke y in
th estow age compartment of the cent recon‐
sole, theke y functions are automatical ly
activated (/ page188). Re
moving/inserting the eme rgency key #
Toremo ve:press release knob 1.
Emer gency key2 is pushed out slight ly. #
Pull out emer gency key2 until it en gage s in
th e intermediate position. #
Press release knob 1again and fully
re mo veemer gency key2. #
Toinser t:press release knob 1. #
Insert emer gency key2 tothe intermediate
position or fully until it engages.
% You can use the intermediate position of
emer gency key2 toattach theke yto akey
ri ng. Re
placing the key battery &
DANG ER Serious damage tohealth
caused byswallowing batteries
Batteries contain toxic and cor rosive sub‐
st ances. Swallowing bat teries may cause
serious damage tohealth.
There is a risk of fata l injur y. #
Keep batteries out of there ach of chil‐
dren. #
If batteries are swallo wed, seek medical
attention immediately. +
ENVIRONMEN
TALNO TEEnvironmental
dama gedue toimproper disposal of bat‐
te ries Batteries conta
in pollutants. It is
illegal todispose of them with the household
ru bbish. 84
Opening and closing
Page 90 of 689

#
Ifth ere are persons in theve hicle, do
not activate the additional door loc k.The additional door lock is automatically activa‐
te d in thefo llowing situations:
R The vehicle is loc ked using thekey.
R The vehicle is loc ked using KEYLESS-GO.
If th eve hicle has been loc ked via Mercedes me
connect, the additional door lock is not activa‐
te d.
If th e additional door lock is activated, the doors
cann otbe opened from the inside.
% After locking you can issue a signal with the
horn.
Yo u can pr eventthe additional door lock from
being activated bydeactivating interior pr otec‐
tion before locking theve hicle (/ page109). Un
locking/opening the doors from the inside #
United Kingdom onl y:obser vethe no tes on
th e additional door lock (/ page 86). #
Pull door handle 1. Centrally locking and unlocking
theve hicle
from the inside #
Tounlo ck:press button 1. #
Tolock: press button 2.
The indicator lamp lights up.
This does not lock or unlock the fuel filler flap. Opening and closing
87
Page 94 of 689

#
Toactivate: press and hold button 2for
appr oximately five seconds until an acoustic
signal sounds. #
Todeactivate: press and hold button 1for
appr oximately five seconds until an acoustic
signal sounds.
When theve hicle is loc ked automatically, the
indicator lamp in button 2lights up. In
thefo llowing situations, there is a danger of
being loc ked out when the function is activated:
R While theve hicle is being tow star ted/
pushed.
R Ifth eve hicle is being tested on a roller dyna‐
mome ter. Locking/unlocking
theve hicle with the
emer gency key Locking/unlocking
the driver's door with the
emer gency key
% Ifyo u wish tolock theve hicle entirely using
th e emer gency key,firs t press the button for
locking from the inside while the driver's
door is open. Then proceed tolock the driv‐
er's door using the emer gency key. #
Insert the emer gency key as far as it will go
into opening 1inthe co ver. #
Pull and hold the door handle. #
Pull the co ver on the emer gency key as
st ra ight as possible away from theve hicle
until it releases. #
Release the door handle. Opening and closing
91
Page 126 of 689

Switching
thest eering wheel heater on/off Re
quirements:
R The ignition is switched on. #
Push the switch into position 1or2.
If th e indicator lamp 3lights up, thesteer‐
ing wheel heater is switched on. When
you swit ch the ignition off, thesteering
wheel heater will switch off. Easy entry and
exitfeature Using
the easy entry and exitfeature &
WARNING Risk of accident when pulling
aw ay during the adjustment process of
th e easy exitfeature
‑ If you pull away while the easy entry and
ex itfeature is making adjustments, you could
lose cont rol of theve hicle. #
Alw ayswa it until the adjustment proc‐
ess is comple tebefore pulling away. &
WARNING Risk of becoming trapped
while adjusting the easy entry andexit
fe ature
When the easy entry andexitfeature adjusts
th e driver's seat, you and other vehicle occu‐
pants – particularly children – could become
trapped. #
During the adjustment process of the
easy entry andexitfeature, make sure
th at no one has any body parts in the
sweep of the driver's seat.
If th ere is a risk of becoming trapped bythe
driver's seat: #
Press the seat adjustment switch.
The adjustment process is stopped. #
Never lea vechildren unat tended in the
ve hicle. #
When leaving theve hicle, alw aysta ke
th eke y with you and lock theve hicle.
This also applies tothe Digital Vehicle
Ke y if the "Digital Vehicle Key" function
is activated via Mercedes me connect. Yo
u can stop the adjustment process bypress‐
ing one of the memory function position
switches. Seats and
stowing 12 3
Page 152 of 689

#
Open flap 3. #
Insert the plug of the device into 115 V
soc ket1.
When the on-board electrical sy stem voltage
is suf ficient, indicator la mp2lights up. Using
the 230 V soc ket in the rear passenger
comp artment &
DANG ER Risk of fata l injury due todam‐
aged connecting cables or soc kets
When a suitable device is connected, the
230 V power soc ket will be car rying a high
vo ltage. You could recei vean electric shock
if th e connecting cable or the 230 V po wer
soc ket is pulled out of the trim or is damaged
or we t. #
Use only connecting cables that are dry
and free of damage. #
When the ignition is switched off, make
sure that the 230 V po wer soc ket is dr y. #
Immedia tely ha ve the 230 V po wer
soc ketch ecked or replaced at a quali‐
fi ed specialised workshop if it is dam‐
aged or has been pulled out of the trim. #
Never plug the connecting cable into a
230 V po wer soc ketth at is damaged or
has been pulled out of the trim. &
DANG ER Risk of fata l injury due toincor‐
re ct handling of the soc ket
Yo u could recei vean electric shock:
R ifyo ure ach into the soc ket.
R ifyo u insert unsuitable devices or objects
into the soc ket. #
Do not reach into the soc ket. #
Only connect suitable devices tothe
soc ket. Re
quirements:
R Devices are equipped with a suitable plug
which con form sto thest andards specific to
th e count ryyou are in.
R A device up toa maximum of 150 W (0.65 A)
is used.
R Do not use multiple soc ket outlets. Seats and
stowing 14 9
Page 153 of 689
#
Open flap 3. #
Insert the plug of the device into 230 V
soc ket1.
When the on-board electrical sy stem voltage
is suf ficient, indicator la mp2lights up. Using
the12 V so cket inthe load compa rt‐
ment Re
quirements:
R Only connect devices up toa maximum of
18 0 W (15 A). #
Lift up cap 1ofthe soc ket and insert the
plug of the device. Overview of USB ports
Depending on
theve hicle equipment, theve hicle
has thefo llowing USB ports:
R inthestow age compartment of the cockpit
armrest (/ page127)
R inthe front cent reconsole next tothe mobile
phone stowage compartment
R inthere ar centre console
R vehicles with thre e seat rows: in the side
stow age compartment of the load compart‐
ment
% Depending on theve hicle equipment, the
design of thestow age compartment and the
number of USB po rts in there ar centre con‐
sole may vary. 15 0
Seats and stowing
Page 158 of 689

Exterior lighting
Note
s on adjusting the lights when driving
abroad It is not necessary
toadjust the headlamps. The
legal requirements are also met in countries in
which traf fic drives on theot her side of thero ad. Information about lighting sy
stems and your
re sponsibility The
various lighting sy stems of theve hicle are
only aids. The driver of theve hicle is responsible
fo r cor rect vehicle illumination in accordance
with the pr evailing light and visibility conditions,
legal requirements and traf fic situation. Light switch
Ope
rating the light switch 1
W Left-hand pa rking lights
2 X Right-hand parking lights
3 T Standing lights and licence plate light‐
ing
4 Ã Automatic driving lights (prefer red light
switch position) 5
L Low beam / high beam
6 R Switches there ar fog light on/off
7 N Switches the front fog lamp on/off
When low beam is activated, the indicator lamp
fo rth est anding lights Tis deactivated and
re placed bythe low beam indicator lamp L. #
Alw ays park your vehicle safely using suf fi‐
cient lighting, in acco rdance with there le‐
va nt le galst ipulations.
* NO
TEBattery discharging byoperating
th est anding lights Operating
thest anding lights over a period of
hours puts a stra in on the batter y. #
Where possible, switch on the
ri ght X or left Wparking light. In
theeve nt of se vere battery discharging, the
st anding lights or parking lights are automati‐
cally swit ched off tofacilitate the next engine
st art. Light and sight
15 5