
#
Insert the new battery into battery compart‐
ment 3. Obser vethe positive pole marking
in the battery compartment and on the bat‐
te ry when doing this. #
Push in battery compartment 3.#
Re-attach co ver1 and push it until it
engages. Problems with
thekey Yo
u can no lon ger lo ckor unlock theve hicle
Po ssible causes:
R The key bat tery iswe ak or dischar ged.
R The key is faulty. #
Check the battery using the indicator lamp
(/ page 71). #
Replace theke y bat tery, if necessary
(/ page 73). #
Use the emer gency keyto lock or unlock
(/ page 72). #
Have theke ych ecked at a qualified specialist
wo rkshop. There is inter
fere nce from a po werful radio
signal source
The key function is impaired by,fo rex ample:
R high voltage po wer lines
R mobile phones
R electronic devices (No tebooks, Tablets)
R shielding due tome tal objects or induction
loops for electrical gatesystems or auto‐
matic bar riers #
Make sure that there is a suf ficient di stance
between theke y and the po tential sou rce of
inter fere nce.
Yo u ha velost a key #
Have theke y deacti vated at a qualified spe‐
cialist workshop. #
If necessar y,ha ve the mechanical lock
re placed as well. Doors
Note
s onthe additional door lock The additional door lock is only
available for
ve hicles forth eUni ted Kingdom. &
WARNING Risk of inju ryto persons
inside theve hicle when the additional
door lock is activated
If th e additional door lock is activated, the
doors can no longer be opened from the
inside. #
Never lea vepersons, in particular chil‐
dren, unat tended in theve hicle. #
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. 74
Opening and closing

R
Ifyo u ha veloc kedth eve hicle using KEY‐
LESS-GO. Locking/unlocking
theve hicle with a Digital
Ve hicle Keyst icker Requ
irements:
R theve hicle is equipped with the "Digital Vehi‐
cle Key" function
R a Digital Vehicle Keyst icke r is present
% Affix th e Digital Vehicle Keyst icke rto yo ur
smartphone; see the Supplement.
% Mercedes-Benz recommends that you car ry
th e emer gency key in case of function
re strictions.
If th eve hicle has been par kedfo r longer than
two weeks, the NFC antenna in the door handle
is deactivated. #
Pull the door handle.
The NFC antenna is activated. #
Touch the door handle on the driver's door in
th e area where NFC antenna 1is located
with the part of the Digital Vehicle Key
st icke r where the NFC transmit ter is located.
The vehicle is loc ked or unloc ked alternately. Locking/unlocking
theve hicle with KEY‐
LESS-GO Re
quirements:
R The key is outside theve hicle.
R The dis tance between theke y and theve hicle
does not exceed 1 m.
R The driver's door and the door at which the
door handle is used are closed. 76
Opening and closing

#
Tounlo cktheve hicle: touch the inner sur‐
fa ce of the door handle. #
Tolock theve hicle: touch sensor sur face
1 or2. #
Convenience closing: touch recessed sen‐
sor su rface 2until the closing process has
been comple ted.
% Further information on con venience closing
(/ page 91).
If yo u open the boot lid from outside, the boot lid
is automatically unloc ked. Problems with KEYLESS-GO
Yo
u can no lon ger lo ckor unlock theve hicle
using KEYLESS-GO.
Po ssible causes:
R The key functions ha vebeen deactivated.
R The key bat tery iswe ak or dischar ged.
R The key is faulty. #
Activate theke y functions (/ page72). #
Check the battery using the indicator lamp
(/ page 71). #
Replace theke y bat tery, if necessary
(/ page 73). #
Use the emer gency keyto lock or unlock
(/ page 78). #
Have theve hicle and keych ecked at a quali‐
fi ed specialist workshop.
There is inter fere nce from a po werful radio
signal source
The KEYLESS-GO function is impaired by,for
ex ample:
R high voltage po wer lines
R mobile phones
R electronic devices (No tebooks, Tablets)
R shielding due tome tal objects or induction
loops for electrical gate systems or auto‐
matic bar riers #
Make sure that there is a suf ficient di stance
between theke y and the po tential sou rce of
inter fere nce. Ac
tivating/deactivating the automatic lo ck‐
ing feature The
vehicle is loc ked automatically when the
ignition is switched on and the wheels are turn‐
ing fast erthan walking pace. #
Toactivate: press and hold button 2for
appr oximately five seconds until an acoustic
signal sounds. Opening and closing
77

#
Tocall up: press or brief lyhold preset posi‐
tion button 4,TorU.
Af terre leasing the button, all sy stems are
mo ved into thestored position. St
ow age areas Note
s on loading theve hicle &
DANG ER Risk of exhaust gas poisoning
Combustion engines emit poisonous exhaust
ga ses such as carbon monoxide. Exhaust
ga ses can enter theve hicle interior if the
boot lid is open when the engine is running,
especially if theve hicle is in motion. #
Alw ays switch off the engine before
opening the boot lid. #
Never drive with the boot lid open. &
WARNING Risk of inju ryfrom unsecu red
items in theve hicle
If objects, luggage or loads are not secured
or not secured suf ficientl y,they could slip, tip
ove r or be throw n around and thereby hit
ve hicle occupants.
There is a risk of injur y,particularly in the
ev ent of sudden braking or a sudden change
in direction. #
Alw aysstow objects in such a wayth at
th ey cannot be thro wn around. #
Before the journe y,secure objects, lug‐
ga ge or loads against slipping or tipping
ove r. &
WARNING Risk of inju rydue toobjects
being stowed incor rectly
If objects in theve hicle interior are stowed
incor rectly, they can slide or be thrown
around and hit vehicle occupants. In addi‐
tion, cup holders, open stowage spaces and
mobile phone brac kets cann otalw aysre tain
all objects they contain.
The reis a risk of injur y,particularly in the
ev ent of sudden braking or a sudden change
in direction. #
Alw aysstow objects in such a wayth at
th ey cannot be thro wn around in such
situations. #
Alw ays make sure that objects do not
pr otru de from stowage spaces, luggage
nets or stowage nets. #
Close the loc kable stow age spaces
before starting a journe y. #
Alw aysstow and secure heavy, hard,
poin ted, sharp-edged, fragile or bulky
objects in the boot. &
WARNING ‑ Risk of accident or inju ry
when using the cup holder while the
ve hicle is in motion
The cup holder cannot hold a container
secure while theve hicle is in motion.
If yo u use a cup holder while theve hicle is in
motion, the conta iner may be flung around
and liquids could be spilled. The vehicle
occupants may come into contact with the
liquid and if it is hot, they could be scalded. Seats and
stowing 11 3

Overview of bag hooks
&
WARNING Risk of inju rywhen using bag
hooks with heavy objects
The bag hooks cannot restra in heavy objects
or items of luggage.
Objects or items of luggage may be flung
around and hit vehicle occupants. #
Only hang light objects on the bag
hooks. #
Never hang hard, sharp-edged or fragile
objects on the bag hooks. Subject
the bag hooks toa maximum load of
1 kg and do not attach any goods tothem. 1
Bag hook
% Obser vethe no tes on loading theve hicle
(/ page 113). At
taching the luggage net &
WARNING Risk of inju rydue toobjects
being stowed inco rrectly
If objects in theve hicle interior are stowed
incor rectly, they can slide or be thrown
around and hit vehicle occupants. In addi‐
tion, cup holders, open stowage spaces and
mobile phone brac kets cann otalw aysre tain
all objects they contain.
The reis a risk of injur y,particularly in the
ev ent of sudden braking or a sudden change
in direction. #
Alw aysstow objects in such a wayth at
th ey cannot be thro wn around in such
situations. #
Alw ays make sure that objects do not
pr otru de from stowage spaces, luggage
nets or stowage nets. #
Close the loc kable stow age spaces
before starting a journe y. Seats and
stowing 117

If
th e ignition is switched on you can charge a
USB device, e.g. a mobile phone, at the USB
ports using a suitable charging cable.
The devices can be charge d with 5 V (up to3 A)
and when the ignition is switched on. Wire
lesscharging of the mobile phone and
connection with theex terior aerial Note
s on wirelessly charging the mobile
phone &
WARNING Risk of inju rydue toobjects
being stowed incor rectly
If objects in theve hicle interior are stowed
incor rectly, they can slide or be thrown
around and hit vehicle occupants. In addi‐
tion, cup holders, open stowage spaces and
mobile phone recep tacles cannot al ways
re tain all objects within.
There is a risk of injur y,particularly in the
ev ent of sudden braking or a sudden change
in direction. #
Alw aysstow objects so that they can‐
not be throw n around in su chsitua‐
tions. #
Alw ays make sure that objects do not
pr otru de from stowage spaces, luggage
nets or stowage nets. #
Close the loc kable stow age spaces
before starting a journe y. #
Alw aysstow and secure heavy, hard,
poin ted, sharp-edged, fragile or bulky
objects in the boot/load compartment. Obser
vethe no tes on loading theve hicle. &
WARNING Risk offire from placing
objects in the mobile phone stowage
compartment
Placing other objects in the mobile phone
stow age compartment could con stitute a fire
hazard. #
Apart from a mobile phone, do not
place any other objects in the mobile phone
stowage compartment, espe‐
cially those made of me tal. *
NO
TEDama getoobjects caused by
placing them in the mobile phone stow‐
age compartment If objects are placed in
the mobile phone
stow age compartment, they may be dam‐
aged byelectromagnetic fields. #
Do not place credit cards, data storage
devices, ski passes or other objects
sensitive toelectromagnetic fields in
th e mobile phone stowage compart‐
ment. *
NO
TEDama getothe mobile phone
stow age compartment caused byliquids If liquids enter
the mobile phone stowage
compartment, the compartment may be
damaged. #
Ensure that no liquids enter the mobile
phone stowage compartment. Seats and
stowing 11 9

R
Depending on theve hicle equipment, the
mobile phone is connected totheve hicle's
ex terior aerial via thech arging module.
R The charging function and wireless connec‐
tion of the mobile phone totheve hicle's
ex terior aerial are only available if the ignition
is switched on.
R Small mobile phones may not be able tobe
ch arge d in everyposition of the mobile
phone stowage compartment.
R Largemobile phones which do not rest flat in
th e mobile phone stowage compartment may
not be able tobe charge d or connec ted with
th eve hicle's exterior aerial.
R The mobile phone may heat up during the
ch arging process. The mobile phone can be
cooled in the mobile phone stowage com‐
partment when the air conditioning sy stem is
switched on. The cooling output in the
mobile phone stowage compartment is high‐
est when the controller in theglove box is
closed.
R Toensure more ef ficient charging and con‐
nection with theve hicle's exterior aerial, re
mo vethe pr otective co ver from the mobile
phone.
R When charging, the mat should be used if
possible. Wire
lessly charging a mobile phone Re
quirements:
R The mobile phone is suitable for wireless
ch arging (Qi-compatible mobile phone).
A list of Qi-compatible mobile phones can be
fo und at: https://www.mercedes-benz-
mobile.com #
Place the mobile phone as close tothe
centre of mat 1as possible wi th the display
fa cing up wards.
When thech arging symbol is shown in the
multimedia sy stem, the mobile phone is
being charge d.
Malfunctions during thech arging process are
shown in the media displa y.
% The mat can be remo vedfo r cleaning, e.g.
using clean, luk ewarmwate r.
Ra dio equipment appr oval numbers for Brazil
This device operates on a secondary basis, that
is to say it has no pr otection against harmful
inter fere nce, not even from the same type of
st ations, and must not cause inter fere nce wi th
sy stems operating on a primary basis.
This product is permitted in accordance with the
procedure defined in Directive 242/2000 bythe
Brazilian telecommunications agency AN ATEL
and meets the applicable tech nical requ ire‐
ments.
Fu rther information is available on the AN ATEL
we bsite. www.anatel.go v.br 12 0
Seats and stowing

#
Ifth eve hicle does not star t:switch off non-
essential consumers and press button 1
once.
If th eve hicle still does not start, one of thefo l‐
lowing display messages appears in the multi‐
function display: #
Place the key in the marked space See Own-
er's Manual :St arting theve hicle with thekey
in the mar ked space (emer gency operation
mode) (/ page 152).
or #
Key not detected Place smartphone in charg-
ing bracket: place the mobile phone in the
mar ked space (/ page120).
% You can swit choff the engine while driving
by pressing button 1for about thre e sec‐
onds or bypressing button 1thre e times
within thre e seconds. Be sure toobser vethe
saf ety no tes under "Driving tips"
(/ page 156).
St arting theve hicle with a Digital Vehicle
Ke yst icker
Re quirements: R
theve hicle is equipped with the "Digital Vehi‐
cle Key" function
R a Digital Vehicle Keyst icke r is present
% Affix th e Digital Vehicle Keyst icke r on your
smartphone; see Supplement.
% Mercedes-Benz recommends that you car ry
th e emer gency key in case of function
re strictions.
Using the Digital Vehicle Keyst icke rfo r the
fi rs t time #
Deactivate theke y2 (/ page 72). #
Place theke y2 inthe mar ked space 3. #
Place the Digital Vehicle Keyst icke r in the
mar ked space 1. #
Start theve hicle using thest art/ stop button.
Any fur ther starts with th e DigitalVehicle
Ke yst icker
The key is not needed for any fur ther starts. #
Place the Digital Vehicle Keyst icke r in the
mar ked space 1. #
Start theve hicle using thest art/ stop button.
If th e Digital Vehicle Keyst icke rge ts stolen, the
ke y function can be deacti vated at a Mercedes-
Benz service centre.
St arting theve hicle with theke y in the
ma rked space (emer gency operation mode)
If th eve hicle does not start and thePlace the
key in the marked space See Owner's Manual
message appears in the multifunction displa y,
yo u can start theve hicle in emer gency operation
mode. 15 2
Driving and pa rking