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SmartKey
Overview of SmartK eyfunctions
&
WARNING ‑ Danger of accident or injury
if ch ildren are left unatte nded intheve hi‐
cle
If ch ildren are left unatte nded intheve hicle,
th ey could:
Ropen doo rs,th ereby endangering other
persons or road users.
Rge t out of theve hicle and be hit by
oncoming traf fic.
Rope rate ve hicle equipment.
Moreo ver,ch ildren could also set theve hicle
in motion by,fo rex ample:
Rreleasing the parking brake.
Rshifting the automatic transmission out of
park position P jor shifting manual
transmission into idle position.
Rst arting the engine.
#Ne ver lea vechildren and animals unat‐
te nded in theve hicle.
#When leaving theve hicle, alw aysta ke
th eke ywit hyo u and lock theve hicle.
#Ke ep theve hicle keyout of there ach of
ch ildren.
* NO
TEDama getotheke ycaused by
magnetic fields
#Ke ep theke yaw ay from strong mag‐
netic fields.1Loc ks
2Battery check lamp
3Unloc ks
4Opens/closes theta ilgate
5Pa nic alarm
The Smart Keyloc ksand unlo cksth efo llowing
components:
RThe doors
RThe tailgate
RThe fuel filler flap
56
Opening and closing
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Unlocking/locking the driver's door using
th e mechanical key
%
Ifyo uwish tolock theve hicle entirely using
th e mechanical 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 mechanical key.
#Insertthe mechanical keyas far as it will go
into opening 1inthe co ver.
#Pull and hold the door handle.
#Pull the co ver on the mechanical keyas
st ra ight as possible away from theve hicle
until it releases.
#Re lease the door handle.
#To unlock :turn the mechanical keycounter -
clo ckwise toposition 1.
#Tolock: turnthe mechanical keyclo ckwise
to position 1.
#Carefully press the co ver onto the lock cylin‐
der until it engages and is seated firm ly.
Load compa rtment
Opening the tail gate
&
WARNING Risk ofexhaust gas poisoning
Combustion engines emit poisonous exhaust
ga ses such as carbon monoxide. Exhaust
ga ses can enter theve hicle interior if theta il‐
gate is open when the engine is running,
especially if theve hicle is in motion.
#Alw ays switch off the engine before
opening theta ilgate.
#Ne ver drive with theta ilgate open.
64
Opening and closing
Page 82 of 506

Anti-theft protection
Fu nction of the immobilizer
The immobilizer pr events your vehicle from being
st ar ted without the cor rect SmartK ey.
The immobilizer is automatically activated when
th e ignition is switched off and deactivated when
th e ignition is switched on.
When leaving theve hicle, alw aysta ke the Smart‐
Ke ywit hyo u and lock theve hicle. An yone can
st art the engine if a valid SmartK eyhas been left
inside theve hicle.
% Ifth eeve ntthat the engine cannot bestar‐
te d (y ettheve hicle's battery is charge d), the
sy stem is not operational. Contact an
authorized Mercedes-Benz Center or call
1-800-FO R-MERCedes (in the USA) or
1-800-387-0 100 (in Canada).
ATA (anti-theft alarm system)
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:
RA door is opened.
RThe tailgate is opened.
RThe hood is opened.
The ATA system is armed automatically af ter
appr oximately 10seconds:
RAfter locking theve hicle with the SmartK ey.
RAf ter locking theve hicle using KEYLESS-GO.
When theATA system is armed, indicator lamp
1 flashes.
The ATA sy stem is automatically deactivated:
RAf ter unlocking theve hicle with the Smart‐
Ke y.
RAfter pressing thest art/ stop button with the
SmartK eyinside theve hicle.
80
Opening and closing
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Notes onthe cor rect driver's seat position
&
WARNING Risk of injury from adjusting
th eve hicle settings while theve hicle is in
motion
Yo u could lose cont rol of theve hicle in the
fo llowing situations:
Rifyo u adjust the driver's seat, the head
re stra int, thesteering wheel or the mir ror
while theve hicle is in motion
Rifyo ufa sten your seat belt while theve hi‐
cle is in motion
#Before starting the engine: adjust the
driver's seat, the head restra int, the
st eering wheel or the mir ror and fasten
yo ur seat belt.
Obser vethefo llowing when adjusting steering
wheel 1, seat belt 2and driver's seat 3:
RYou are as faraw ay from the driver's airbag
as possible.
RYo u are sitting in a no rmal upright position.
RYour thighs are slightly suppor tedby the seat
cushion.
RYo ur legs are not entirely stre tched and you
can dep ress the pedals proper ly.
RThe back of your head is support ed ateye
le ve lby the center of the head restra int.
RYo u can hold thesteering wheel with your
arms slightly bent.
RYo u can mo veyour legs freel y.
RYou can see all the displa ysinthe instrument
clus ter clearl y.
RYou should ha vea good overview of traf fic
conditions.
RThe seat belt is pulled snug lyagainst the
body and must be routed across the center
of your shoulder and across your hips in the
pelvic area.
82 Seats and stowing
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Seats
Adjusting the front seat manually and elec‐
trically (without Seat Comfort Package)
&
WARNING Risk of becoming trapped if
th e seats are adjus tedby children
Children could become trapped if they adjust
th e seats, particularly when unattended.
#When leaving theve hicle, alw aysta ke
th e SmartK eywith you and lock the
ve hicle.
#Ne ver lea vechildren unatte nded inthe
ve hicle.
The seats can be adjus ted when the ignition is
switched off.
& WARNING Risk of becoming trapped
when adjusting the seats
When you adjust a seat, you or other vehicle
occupants could become trapped, e.g. on the
seat guide rail.
#Make sure when adjusting a seat that
no one has any body parts in the sweep
of the seat.
Obser vethe saf etyno tes on "Air bags" and "Chil‐
dren in theve hicle".
&
WARNING Risk of accident due tothe
driver's seat not being engaged
If th e driver's seat is not engaged, it could
mo veunexpectedly while theve hicle is in
motion.
This could cause youto lose control of the
ve hicle.
#Alw ays make sure that the driver's seat
is engaged before starting theve hicle.
&
WARNING Risk of injury from adjusting
th eve hicle settings while theve hicle is in
motion
Yo u could lose cont rol of theve hicle in the
fo llowing situations:
Rifyo u adjust the driver's seat, the head
re stra int, thesteering wheel or the mir ror
while theve hicle is in motion
Rifyo ufa sten your seat belt while theve hi‐
cle is in motion
#Before starting the engine: adjust the
driver's seat, the head restra int, the
st eering wheel or the mir ror and fasten
yo ur seat belt.
&
WARNING Risk of becoming trapped if
th e seat height is adjus ted carelessly
If yo u adjust the seat height carelessly, you
or other vehicle occupants could be trapped
and thereby injured.
Seats and stowing 83
Page 89 of 506
#Toselect the front passenger seat: press
button 1.
When the indicator lamp lights up, the front
passenger seat is selected.
#Ad just the front passenger seat using the
buttons in the door control panel on the driv‐
er's side.
Ad justing the 4-w aylumbar support
1Toraise
2To sof ten
3To lowe r
4To harden
#Using buttons 1to4, adjust the conto ur
of the backrest individually tosuit your bac k.
Headrestra ints
Ad justing the front seat head restra ints man‐
ually
& WARNING Risk of injury from adjusting
th eve hicle settings while theve hicle is in
motion
Yo u could lose cont rol of theve hicle in the
fo llowing situations:
Rifyo u adjust the driver's seat, the head
re stra int, thesteering wheel or the mir ror
while theve hicle is in motion
Rifyo ufa sten your seat belt while theve hi‐
cle is in motion
#Before starting the engine: adjust the
driver's seat, the head restra int, the
st eering wheel or the mir ror and fasten
yo ur seat belt.
Seats and stowing 87
Page 100 of 506

Steering wheel
Adjusting the steering wheel manually
&
WARNING Risk of injury from adjusting
th eve hicle settings while theve hicle is in
motion
Yo u could lose cont rol of theve hicle in the
fo llowing situations:
Rifyo u adjust the driver's seat, the head
re stra int, thesteering wheel or the mir ror
while theve hicle is in motion
Rifyo ufa sten your seat belt while theve hi‐
cle is in motion
#Before starting the engine: adjust the
driver's seat, the head restra int, the
st eering wheel or the mir ror and fasten
yo ur seat belt.
&
WARNING Risk of entrapment forch il‐
dren when adjusting thesteering wheel
Children could injure themselves if they
adjust thesteering wheel.
#Ne ver lea vechildren unatte nded inthe
ve hicle.
#When leaving theve hicle, alw aysta ke
th e SmartK eywith you and lock the
ve hicle.
#To unlock thest eering column: push
re lease le ver1 down comple tely.
#Ad just height 2and di stance tosteering
wheel 3.
#Tolock thest eering column: pushrelease
le ve r1 up as far as it will go.
#Check and make sure that thesteering col‐
umn is loc kedby moving thesteering wheel.
Ad justing the steering wheel electrically
The steering wheel can be adjus ted when the
ignition is switched off.
98 Seats and stowing
Page 103 of 506

&WARNING Risk of entrapment if the
memory function is activated bychildren
Children could become trapped if they acti‐
va te the memory function, particularly when
unattended.
#Ne ver lea vechildren unatte nded inthe
ve hicle.
#When leaving theve hicle, alw aysta ke
th eke ywit hyo u and lock theve hicle.
The memory function can be used when the igni‐
tion is switched off.
Seat adjustments for up tothre e people can be
st ored and called up using the memory function.
The following sy stems can be selected:
RSeat, backrest and head restra int
RSt eering wheel
ROutside mir rors
RHead-up Display
#To save :set the seat, thesteering wheel, the
Head-up Display and the outside mir rorto
th e desired position.
#Press the memory button M toge ther with
one of thestorage position buttons 1,2 or 3.
An acou stic signal sounds. The settings are
st ored.
#To call up: press and hold there leva nt pre‐
set position button 1,2 or 3 until the front
seat is in thestored position.
St ow age areas
Note s on loading theve hicle
&
WARNING Risk ofexhaust gas poisoning
Combustion engines emit poisonous exhaust
ga ses such as carbon monoxide. Exhaust
ga ses can enter theve hicle interior if theta il‐
gate is open when the engine is running,
especially if theve hicle is in motion.
#Alw ays switch off the engine before
opening theta ilgate.
#Ne ver drive with theta ilgate open.
&
WARNING Risk of injury from unsecured
items in theve hicle
If objects, luggage or loads are not secured
or not secured suf ficientl y,they could slip,
Seats and stowing 10
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