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If
yo u do not open theve hicle within appr ox‐
imately 40 seconds af ter unlocking:
R The vehicle is loc ked again
R Anti- theft pr otection is reactivated
Do not keep the SmartK eytoge ther with elec‐
tronic devices or me tal objects. This can af fect
th e SmartK ey's functionality.
% If battery check lamp 2does not light up
af te r pressing the0036 or0037 button, the
battery is dischar ged. Ac
tivating/deactivating the acoustic lo cking
ve rification signal Multimedia sy
stem:
, Vehicle .
î Vehicle Set-
tings .
Acoustic Lock #
Activate 0073or deacti vate 0053 the function. Ac
tivating/deactivating the panic alarm Re
quirements:
R The ignition is switched off %
The panic alarm function is only available in
cer tain countries. #
Toactivate: press button 1for appro x‐
ima tely one second.
A visual and audible alarm is triggered. #
Todeactivate: briefly press but ton1 again.
or #
Press thest art/ stop button on the cockpit
(the SmartK eyis inside theve hicle). Changing
the unlocking settings Po
ssible unlocking functions of the SmartK ey:
R Central unlo cking R
Unlocking the driver's door and fuel filler flap #
Toswitch between settings: pressthe
0036 and0037 buttons simultaneously for
appr oximately six seconds until the battery
ch eck lamp flashes twice.
If th e unlocking function forth e driver's door
and fuel filler flap has been selec ted:
R Pressing the0036 button a second time cen‐
trally unloc kstheve hicle
R Vehicles with KEYLESS-GO: Ifyo uto uch
th e inner sur face of the door handle on the
driver's door, only the driver's door and fuel
fi ller flap are unlo cked. Deactivating
the SmartK eyfunctions If
yo u do not use theve hicle or a SmartK ey for
an extended pe riod of time, you can reduce the
energy consum ption of there spective Smart‐
Ke y . Todo so, deactivate the SmartK eyfunc‐
tions. Opening and closing
59
Page 64 of 518
Problem
Possible causes/consequences and 0050
0050Solutions
R The SmartK eyis defective. #
Check the battery using the battery check lamp and replace if necessary (→ page 60). #
Use the emer gency keyto lock or unlock (→ page 60). #
Have the SmartK eychecked at a qualified specialist workshop.
Yo u ha velost a SmartK ey. #
Have the SmartK eydeactivated at a qualified specialist workshop. #
If necessar y,ha ve the mechanical lock changed as well. Doors
Un
locking and opening doors from the inside #
Pull door handle 2.
Locking pin 1pops up when the door is
unloc ked. Locking
the doors from the inside #
Take the SmartK eywith you when exiting the
ve hicle and close the driver's door. #
Press down locking knob 1onthe driver's
door from the front passenger seat. 62
Opening and closing
Page 65 of 518
#
Exit theve hicle and press down the locking
knob on the front passenger door. #
Close the front passenger door. Locking/unlocking
theve hicle centrally from
th e inside #
Tounlo ck:press button 1. #
Tolock: press button 2. This does not lock or unlock
the fuel filler flap
and theglove box.
The vehicle is not unloc ked:
R Ifyo u ha veloc kedth eve hicle using the
SmartK ey.
R Ifyo u ha veloc kedth eve hicle using KEY‐
LESS-GO. Locking/unlocking
theve hicle with KEY‐
LESS-GO Requ
irements:
R The SmartK eyis outside theve hicle.
R The dis tance between the SmartK eyand the
ve hicle does not exceed 3 ft(1 m).
R The driver's door and the door at which the
door handle is used are closed. #
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 2for an extended pe riod.
% Further information on con venience closing
(→ page 75). Opening and closing
63
Page 67 of 518
#
Todeactivate: press and hold button 1for
appr oximately five seconds until an acoustic
signal sounds. #
Toactivate: press and hold button 2for
appr oximately five seconds until an acoustic
signal sounds.
In thefo llowing situations, there is a danger of
being loc ked out when the function is activated:
R The vehicle is being towe d/pushed. R
The vehicle is being tested on a dynamome‐
te r. Information on
the po wer closing function
fo r the doo rs If
yo u push the door into the lock tothefirst
de tent position, the po wer closing function will
auto matically pull the door into the loc k. Un
locking the driver's door with the emer‐
ge ncy 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. Opening and closing
65
Page 68 of 518

#
Release the door handle. #
Turn the emer gency key counter-clockwise to
position 0047. #
Carefully press the co ver onto the lock cylin‐
der until it engages and is seated firm ly. Tr
unk Opening
the trunk lid &
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
trunk lid is open when the engine is running,
especially if theve hicle is in motion. #
Alw ays switch off the engine before
opening the trunk lid. #
Never drive with the trunk lid open. *
NO
TEDama getothe trunk lid byobs ta‐
cles ab ovetheve hicle The trunk lid swings upwards when it is
opened. #
Therefore, make sure that there is suf fi‐
cient clearance ab ovethe trunk lid. Yo
u ha vethefo llowing options for opening the
trunk lid: #
With th e trunk lid unloc ked, press theto p of
th e Mercedes star. #
Pull thefo lded-out Mercedes star when the
re ar view camera is activated and the trunk
lid is unloc ked.
% Toopen the trunk lid, pull on thefo lded-out
Mercedes star when there ar view camera is
activated. #
Press and hold the008B button on the
SmartK ey. 66
Opening and closing
Page 69 of 518

#
Pull trunk lid remo teoperating switch 1. #
Vehicles with HANDS-FREE ACCESS: Make
a kicking mo vement with your foot below the
bumper (→ page 69).
Ve hicles with trunk lid conv enience closing:
If an item obstructs the trunk lid during the auto‐
matic opening process, the obs tacle de tection
sy stem will stop the trunk lid. The obs tacle de
tection function is only an aid and is not a
substitu teforyo ur attentiveness. Closing
the trunk lid &
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. Obser
vethe no tes on loading theve hicle. &
WARNING Risk of becoming trapped
du ring au tomatic closing of the trunk lid
Pa rts of the body could become trapped dur‐
ing automatic closing of the trunk lid. More‐
ove r,people, e.g. children, may be standing
in the closing area or may enter the closing
area during the closing process. #
Make sure that nobody is in the vicinity
of the closing area during the closing
process. #
Use one of thefo llowing options tostop
th e closing process:
R Press the008B button on the
SmartK ey.
R Press or pull there mo teoperating
switch on the driver's door.
R Press the closing or locking button
on the trunk lid.
R Press theto p of thest ar on the
trunk lid. Ve
hicles with HANDS-FREE ACCESS: It is also
possible tostop the closing process bymaking a Opening and closing
67
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In
these situations in particular, there ve rsing
function cannot pr event someone being trap‐
ped. #
When closing, ma kesure that no body
parts are in the closing area. #
If someone is trapped, use one of the
fo llowing options:
R Press the008B button on the
SmartK ey.
R Press there mo teoperating switch
on the driver's door.
R Press the closing or locking button
on the trunk lid.
R Press theto p of thest ar on the
trunk lid. HANDS-FREE
ACCESS function Wi
th HANDS-FREE ACCESS you can open, close
or inter rupt trunk lid mo vement byper form ing a
kicking mo vement under there ar bumper.
The kicking mo vement triggers the opening or
closing process alternately.
Obser vethe no tes when opening (→ page 66)
and closing (→ page67)th e trunk lid. %
Awa rning tone sounds while the trunk lid is
opening or closing. &
WARNING Risk of bu rns caused bya hot
ex haust sy stem
The vehicle exhaust sy stem can become very
hot. If you use HANDS-FREE ACCESS, you
could bu rnyourself by touching theex haust
sy stem. #
Alw ays ensure that you on ly ma ke a
kicking mo vement within the de tection
ra nge of the sensors. *
NO
TEDama getotheve hicle caused by
unin tentional lyopening the trunk lid R
When using an automatic car wash
R When using a high pressure cleaner #
Deactivate KEYLESS-GO or make sure
that the SmartK eylocated is at least
10 ft(3 m) away from theve hicle in
such situations. Opening and closing
69
Page 86 of 518

ATA
(anti-theft ala rmsystem) Fu
nction of theATA system (anti-theft ala rm
sy stem)
If th eATA system is armed, a visual and audible
alarm is triggered in thefo llowing situations:
R When a door is opened
R When the trunk lid is opened
R When the hood is opened
R When theglove box is opened
The ATA system is armed automatically af ter
appr oximately 10seconds:
R After locking theve hicle with the SmartK ey
R After locking theve hicle using KEYLESS-GO. When
theATA system is armed, indicator lamp
1 flashes.
The ATA sy stem is automatically deactivated:
R After unlocking theve hicle with the Smart‐
Key
R After pressing thest art/ stop button with the
SmartK eyinside theve hicle R
After unlocking theve hicle using KEYLESS-
GO
Deactivating theATA #
Press the0036, 0037or008B button on the
SmartK ey.
or #
Press thest art/ stop button with the Smart‐
Ke y in thestow age compartment
(→ page 132)
Deactivating the ala rmusing KEYLESS-GO: #
Grasp the outside door handle with the
SmartK eyoutside theve hicle. 84
Opening and closing