Important safety notes
iObserve the "Important safety notes" sec-
tion (
Ypage 75).
No steering support isprovided by STEER
CONTROL, if:
RESP®is malfunctioning.
Rthe lighting isfaulty.
Power steering will, however, continue to
function.
Protection against theft
Immobilizer
The immobili zer prevents your vehicle from
bein g started without the correct SmartKey.
XTo activate with the SmartKey: remove
the SmartKey from the ignition lock.
XTo activate with KEYLESS-GO: switch the
ignit ion off and open the driver's door.
XTo deactivate: switch on the ignition.
When leaving the vehicle, always take the
Sm artKey with you and lock the vehicle. Any-
one can start the engine ifa valid SmartKey
has been left inside the vehicle.
iThe immobilizer is always deactivated
when you start the engine.
In the event that the engine cannot be star-
ted (yet the vehicle's battery is charged),
the system isnot operational. Contact an
authorized Mercedes-Benz Center or call
1-800-FOR-M ERCedes (in the USA) or
1-800-387-0100 (in Canada).
ATA (anti-theft alarm system)
XTo ar m:lock the vehicle with the SmartKey
or KEYLESS -GO.
In dicator lamp :flashes. The alarm sys-
tem isarmed after approximately
15 seconds.
XTo disar m:unlock the vehicle with the
Sm artKey or KEYLESS -GO.
or
XIn sert the SmartKey into the ignit ion lock.
A visual and audiblealarmistriggered ifthe
alarm system isarmed and you open:
Ra door
Rthe vehicle with the mechanical key
Rthe trunk lid/tailgate
Rthe hood
XTo switch the ala rmoff with the Smar t-
Key: press the %or& button on the
Sm artKey.
The alarm isswitched off.
or
XRemo vethe Start /S top button from the
ignit ion lock.
XInsert the SmartKey into the ignit ion lock.
The alarm isswitched off.
Protection against theft87
Safety
Z
signal can be activated and deactivated using
the on-board computer (
Ypage 190).
When it is dark, the surround lighting also
comes on if it is activated in the on-board
computer (
Ypage 190).
KEYLESS-GO
General notes
Bear in mind that the engine can be started by
any of the vehicle occupants if there is a KEY-
LESS-GO key in the vehicle.
Locking/unlocking centrally
You can start, lock or unlock the vehicle using
KEYLESS-GO. To do this, you only need carry
the SmartKey with you. You can combine the functions of KEYLESS-GO with those of a con-
ventional SmartKey. Unlock the vehicle by
using KEYLESS-GO, for instance, and lock it
using the &button on the SmartKey.
When locking or unlocking with KEYLESS-GO,
the distance between the SmartKey and the
corresponding door handle must not be
greater than 3 ft (1 m).
A check which periodically establishes a radio
connection between the vehicle and the
SmartKey determines whether a valid Smart-
Key is in the vehicle. This occurs, for example:
Rwhen the external door handles are
touched
Rwhen starting the engine
Rwhile the vehicle is in motion
XTo unlock the vehicle: touch the inner
surface of the door handle.
XTo lock the vehicle: touch sensor sur-
face :.
XConvenience closing feature: touch
recessed sensor surface ;for an exten-
ded period.
For further information on the convenience
closing feature, see the Digital Operator's
Manual, keyword "Convenience closing".
(Example: Sedan)
XTo unlock the trunk lid/tailgate: pull the
handle on the trunk lid/tailgate.
The vehicle only unlocks the trunk lid/tail-
gate.
Deactivating and activating
If you do not intend to use a key for an exten-
ded period of time, you can deactivate the
KEYLESS-GO function of the SmartKey. The
SmartKey will then use very little power,
thereby conserving battery power. For the
purposes of activation/deactivation, the
vehicle must not be nearby.
XTo deactivate: press the&button on
the SmartKey twice in rapid succession.
The battery check lamp of the SmartKey
(
Ypage 93) flashes twice briefly and
SmartKey91
Opening and closing
Z
lights up once, then KEYLESS-GO is deac-
tivated.
XTo activate:press any button on the
SmartKey or insert the SmartKey into the
ignition lock.
KEYLESS-GO and all of its associated fea-
tures are available again.
Changing the settings of the locking
system
You can find information about this in the
Digital Operator's Manual.
Mechanical key
General notes
If the vehicle can no longer be locked or
unlocked with the SmartKey, use the
mechanical key.
If you use the mechanical key to unlock and
open the driver's door or the trunk lid/tail-
gate, the anti-theft alarm system will be trig-
gered (
Ypage 87).
There are several ways to turn off the alarm:
XTo deactivate the alarm with the Smart-
Key: press the %or& button on the
SmartKey.
or
XInsert the SmartKey into the ignition lock.
or
XTo deactivate the alarm with KEYLESS-
GO: press the Start/Stop button in the igni-
tion lock. The SmartKey must be in the
vehicle.
or
XLock or unlock the vehicle using KEYLESS-
GO. The SmartKey must be outside the
vehicle. If you unlock the vehicle using the mechanical
key, the fuel filler flap will not be unlocked
automatically.
XTo unlock the fuel filler flap:
insert the
SmartKey into the ignition lock.
Removing the mechanical key
XPush release catch :in the direction of
the arrow and at the same time remove
mechanical key ;from the SmartKey.
For further information about:
Runlocking the driver's door (Ypage 96)
Runlocking the trunk (Ypage 103)
Runlocking the tailgate (Ypage 103)
Rlocking the vehicle (Ypage 96)
Inserting the mechanical key
XPush mechanical key ;completely into
the SmartKey until it engages and release
catch :is back in its basic position.
92SmartKey
Opening and closing
SmartKey battery
Checking the battery
XPress the &or% button.
The battery is working properly if battery
check lamp :lights up briefly.
The battery is discharged if battery check
lamp :does not light up briefly.
XChange the battery (Ypage 93).
iIf the SmartKey battery is checked within
the signal reception range of the vehicle,
pressing the &or% button:
Rlocks or
Runlocks the vehicle
iYou can get a battery at any qualified spe-
cialist workshop.
Replacing the battery
You require a CR 2025 3 V cell battery.
XTake the mechanical key out of the Smart-
Key (
Ypage 92).
XPress mechanical key ;into the opening
in the SmartKey in the direction of the
arrow until battery compartment cover :
opens. Do not hold battery compartment
cover :closed while doing so.
XRemove battery compartment cover :.
XRepeatedly tap the SmartKey against your
palm until battery=falls out.
XInsert the new battery with the positive ter-
minal facing upwards. Use a lint-free cloth
to do so.
XMake sure that the surface of the battery is
free of lint, grease and other contaminants.
XInsert the front tabs of battery compart-
ment cover :into the housing and then
press to close it.
XInsert mechanical key ;into the Smart-
Key.
XCheck the function of all SmartKey buttons
on the vehicle.
SmartKey93
Opening and closing
Z
ProblemPossible causes/consequences andMSolutions
You have lost the
mechanical key.XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
The engine cannot be
started using the
SmartKey.the on-board voltage is too low.
XSwitch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
XCheck the starter battery and charge it if necessary
(
Ypage 278).
or
XJump-start the vehicle (Ypage 279).
or
XConsult a qualified specialist workshop.
The engine cannot be
started using KEYLESS-
GO. The SmartKey is in
the vehicle.The vehicle is locked.
XUnlock the vehicle and try to start the vehicle again.
There is interference from a powerful source of radio waves.
XStart your vehicle with the SmartKey in the ignition lock.
Doors
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission out of
park position P
RStart the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
Ideally, place luggage or loads in the trunk/
cargo compartment. Observe the loading
guidelines (
Ypage 238).
Information in the Digital Operator's
Manual
In the Digital Operator's Manual you will find
information on the following topics:
RUnlocking and opening doors from the
inside
RCentrally locking and unlocking the vehicle
from the inside
RAutomatic locking feature
Doors95
Opening and closing
Z
Ideally, place luggage or loads in the trunk/
cargo compartment. Observe the loading
guidelines (
Ypage 238).
Do not leave the SmartKey in the trunk/cargo compartment. You could otherwise lock your-
self out.
Sedan without the trunk lid convenience
closing feature: the trunk lid can be:
Ropened and closed manually from outside
Ropened automatically from outside
Ropened automatically from inside
Rlocked separately
Ropened with the emergency release button
Runlocked with the mechanical key
Sedan with the trunk lid convenience
closing feature: the trunk lid can be:
Ropened and closed manually from outside
Ropened and closed automatically from out-
side
Ropened and closed automatically from
inside
Rlocked separately
Ropened with the emergency release button
Runlocked with the mechanical key
Wagon: you can:
Ropen and close the tailgate manually from
outside
Ropen the tailgate manually from inside
(Wagon with a folding bench seat)
Ropen and close the tailgate automatically
from outside
Ropen and close the tailgate automatically
from inside
Rlimit the opening angle of the tailgate
Runlock the tailgate using the mechanical
key
Trunk lid/tailgate reversing feature
The trunk lid/tailgate is equipped with an
automatic reversing feature. It reacts if a solid
object obstructs or restricts the trunk lid/
tailgate during the closing procedure. The trunk lid/tailgate opens again automatically.
The automatic reversing feature is only an aid
and is not a substitute for your attentiveness to the trunk lid/tailgate while it is closing.
GWARNING
The reversing feature does not react:
Rto soft, light and thin objects, e.g. small fin-
gers
Rover the last 1/3 in (8 mm) of the closing
movement
This means that the reversing feature cannot
prevent someone being trapped in these sit-
uations. There is a risk of injury.
Make sure that no body parts are in close
proximity during the closing procedure.
If somebody becomes trapped:
Rpress the Fbutton on the SmartKey, or
Rpull or press the remote operating switch
on the driver's door or
Rpress the closing or locking button on the
trunk lid/tailgate, or
Rpull the handle on the trunk lid/tailgate
Opening/closing from outside
Opening
Handle (example: Sedan)
XPress the %button on the SmartKey.
XSedan: pull handle :.
XRaise the trunk lid.
Wagon: if you pull handle :and keep it in
this position, you can open the tailgate man-
Trunk/cargo compartment97
Opening and closing
Z
XInsert the mechanical key into the trunk lid
lock as far as it will go.
XTurn the mechanical key clockwise from
position1to position 2.
XRemove the mechanical key.
XInsert the mechanical key into the Smart-
Key.
Unlocking the trunk (Sedan)
!
The trunk lid swings upwards when
opened. Therefore, make sure that there is
sufficient clearance above the trunk lid.
If the trunk cannot be unlocked with the
SmartKey or KEYLESS-GO, use the mechani-
cal key.
If you use the mechanical key to unlock and
open the trunk lid, the anti-theft alarm system
will be triggered (
Ypage 87).
XTake the mechanical key out of the Smart-
Key (
Ypage 92).
XInsert the mechanical key into the trunk lid
lock as far as it will go.
XTurn the mechanical key from position 1
counter-clockwise as far as it will go to
position 2.
The trunk is unlocked.
XTurn the mechanical key back to position
1 and remove it.
XInsert the mechanical key into the Smart-
Key.
Trunk emergency release (Sedan)
You can open the trunk lid from inside the
vehicle with the emergency release button.
XPress emergency release button :briefly.
The trunk lid unlocks and opens.
The trunk lid can be unlocked and opened
with the trunk lid emergency release when
the vehicle is stationary or while driving.
The trunk lid emergency release does not
open the trunk lid if the battery is disconnec- ted or discharged.
Trunk lid emergency release light:
Remergency release button :flashes for
30 minutes after the trunk lid is opened.
Remergency release button :flashes for
60 minutes after the trunk lid is closed.
Tailgate emergency release (Wagon)
General notes
!The tailgate swings upwards and to the
rear when opened. Therefore, make sure
that there is sufficient clearance above and
behind the tailgate.
iTailgate opening dimensions
(
Ypage 344).
If the tailgate can no longer be opened from
outside the vehicle, use the emergency
release on the inside of the tailgate.
On vehicles with a folding bench seat, you can
use the handle to open the tailgate from
inside the vehicle (
Ypage 97).
Trunk/cargo compartment103
Opening and closing
Z
Opening
XFold the rear seat backrest forwards
(
Ypage 241).
XRemove cargo compartment cover
(
Ypage 243).
XTake the mechanical key out of the Smart-
Key (
Ypage 92).
XInsert mechanical key;into the opening
in paneling :.
XTurn mechanical key ;90° clockwise.
XPush mechanical key ;in the direction of
the arrow and open the tailgate.
XInsert the mechanical key into the Smart-
Key.
Side windows
Important safety notes
GWARNING
While opening the side windows, body parts
could become trapped between the side win-
dow and the door frame as the side window
moves. There is a risk of injury.
Make sure that nobody touches the side win-
dow during the opening procedure. If some-
body becomes trapped, release the switch or
pull the switch to close the side window again.
GWARNING
While closing the side windows, body parts in
the closing area could become trapped. There is a risk of injury.
When closing make sure that no parts of the
body are in the closing area. If somebody
becomes trapped, release the switch or press
the switch to open the side window again.
GWARNING
If children operate the side windows they
could become trapped, particularly if they are left unsupervised. There is a risk of injury.
Activate the override feature for the rear side
windows. When leaving the vehicle, always
take the SmartKey with you and lock the vehi-
cle. Never leave children unsupervised in the
vehicle.
Side window reversing feature
The side windows are equipped with an auto-
matic reversing feature. If a solid object
blocks or restricts a side window during the
closing process, the side window opens again
automatically. However, the automatic
reversing feature is only an aid and does not
relieve you of the responsibility of paying
attention when closing a side window.
GWARNING
The reversing feature does not react:
Rto soft, light and thin objects, e.g. small fin-
gers
Rover the last 1/6 in(4 mm) of the closing
movement
Rduring resetting
Rwhen closing the side window again man-
ually immediately after automatic reversing
This means that the reversing feature cannot
prevent someone being trapped in these sit-
uations. There is a risk of injury.
Make sure that no body parts are in close
proximity during the closing procedure. If
someone becomes trapped, press the switch
to open the side window again.
104Side windows
Opening and closing