Page 101 of 521

100 Safety and SecurityDriving safety systemsWarning!
G
If you see the ESP
® warning lampv
flashing in the speedometer, proceed as fol-
lows:
While driving off, apply as little throttle
as possible
While driving, ease up on the accelera-
tor
Adapt your speed and driving style to
the prevailing road conditions
Failure to observe these guidelines could
cause the vehicle to skid.
The ESP
® cannot prevent accidents result-
ing from excessive speed.
!Do not tow with one axle raised.
Otherwise the transfer case can be
damaged, which is not covered by the
Mercedes-Benz Limited Warranty.
!Performance testing must only be con-
ducted on a two-axle dynamometer.
Otherwise the transfer case can be
damaged, which is not covered by the
Mercedes-Benz Limited Warranty.!Because of the ESP’s
® automatic oper-
ation, the engine and the ignition must
be shut off (SmartKey in starter switch
position0 or1 or KEYLESS-GO
start/stop button* in position0 or1)
when the parking brake is being tested
on a brake test dynamometer.
Active braking action through ESP
®
may otherwise seriously damage the
front or rear axle brake system.
Operational tests with the engine
running can only be conducted on a
two-axle dynamometer.
Page 102 of 521

101 Safety and Security
Anti-theft systems
Anti-theft systems
Immobilizer
The immobilizer prevents unauthorized
persons from starting your vehicle.
Activating
With the SmartKey
Remove the SmartKey from the starter
switch.
With KEYLESS-GO*
Turn off the engine by means of the
start/stop button on the gear selector
lever.
Open the driver’s door.Deactivating
With the SmartKey
Switch on the ignition.
With KEYLESS-GO*
Start the engine by means of the
start/stop button on the gear selector
lever.
Anti-theft alarm system
Once the alarm system has been armed, a
visual and audible alarm is triggered when
someone opens:
a door
the tailgate
the hood
The alarm will stay on, even if the activat-
ing element (a door, for example) is imme-
diately closed.
The alarm system will also be triggered
when
someone attempts to raise the vehicle
the vehicle is opened using the
mechanical key
someone opens a door from the inside
iIn case the engine cannot be started
(yet the vehicle’s battery is charged),
the system is not operational. Contact
an authorized Mercedes-Benz Center
or call 1-800-FOR-MERCedes (in the
USA), or 1-800-387-0100 (in Canada).
Page 104 of 521
103 Safety and Security
Anti-theft systems
With KEYLESS-GO*
Pull an outside door handle.
The SmartKey with KEYLESS-GO must
be within 3 ft (1 m) of the vehicle.
or
Press the KEYLESS-GO* start/stop
button (
page 37).
The SmartKey with KEYLESS-GO must
be inside the vehicle.
Tow-away alarm
Once the tow-away alarm is armed, a visual
and audible alarm will be triggered when
someone attempts to raise the vehicle.Arming tow-away alarm
Lock the vehicle with the SmartKey or
KEYLESS-GO*.
The tow-away alarm is automatically
armed after about 30 seconds.
iThe tow-away protection alarm is trig-
gered, for example, if the vehicle is lift-
ed on one side.
If the alarm stays on for more than
30 seconds, a call to the Response
Center is initiated automatically by the
Tele Aid system* (
page 282), provid-
ed that the Tele Aid service was sub-
scribed to and properly activated, and
that necessary cellular service and GPS
coverage are available.
Page 105 of 521

104 Safety and SecurityAnti-theft systemsDisarming tow-away alarm
To prevent triggering the tow-away alarm
feature, switch off the tow-away alarm be-
fore towing the vehicle, or when parking on
a surface subject to movement, such as a
ferry or auto train.
The button is located on the overhead con-
trol panel.
1Tow-away alarm off button
Switch off the ignition and remove the
SmartKey from the starter switch.
Press button1.
The indicator lamp in the button1
comes on briefly.
Exit and lock the vehicle with the
SmartKey or (vehicles with
KEYLESS-GO*) the lock button at each
door handle.Canceling tow-away alarm
With the SmartKey
Insert the SmartKey in the starter
switch.
or
Press button Œ or ‹ on the
SmartKey.
With KEYLESS-GO*
Pull an outside door handle.
The SmartKey with KEYLESS-GO must
be within 3 ft (1 m) of the vehicle.
or
Press the KEYLESS-GO* start/stop
button (
page 38).
The SmartKey with KEYLESS-GO must
be inside the vehicle.
iYou cannot disarm the tow-away alarm
when the ignition is switched on.
iWhen you unlock the vehicle, the
tow-away protection disarms automati-
cally.
The tow-away alarm remains disarmed
until you lock the vehicle again.
Page 114 of 521

113 Controls in detail
Locking and unlocking
Important notes on using KEYLESS-GO
You can also use the SmartKey with
KEYLESS-GO like a normal SmartKey
(page 106).
You can combine KEYLESS-GO func-
tions with normal SmartKey functions
(e.g. unlocking with KEYLESS-GO and
locking with button ‹).
Always carry the SmartKey with
KEYLESS-GO with you.
Never store the SmartKey with
KEYLESS-GO together with:
Electronic items such as a cellular
phone or another SmartKey with
KEYLESS-GO
Metallic objects such as coins or
metal foil
Doing so could impair the function of
the KEYLESS-GO system.
To lock or unlock the vehicle, the
SmartKey with KEYLESS-GO must be
located outside the vehicle within ap-
proximately 3 ft (1 m) of a door or the
tailgate.
In order to start the engine with the
SmartKey with KEYLESS-GO:
The SmartKey with KEYLESS-GO
must be located in the vehicle.
All the doors must be closed.
The brake pedal must be firmly de-
pressed. Do not depress the accel-
erator.
If you have started the engine with the
KEYLESS-GO start/stop button
(page 38), you can only turn it off
again with this button, even if you have
put the SmartKey in the starter switch
in the meantime.
This does not apply if, after starting, the
selector lever is still in positionP and
then the SmartKey is inserted in the
starter switch. The SmartKey will then
have priority over the KEYLESS-GO
function and the vehicle’s electrical
system will operate according to the
position of the SmartKey in the starter
switch, even stopping the engine.
If the SmartKey with KEYLESS-GO is
positioned farther away from the vehi-
cle, the system may no longer recog-
nize the SmartKey with KEYLESS-GO.
The vehicle cannot be locked or the en-
gine started via the KEYLESS-GO sys-
tem.
iYou can also open and close the power
windows and tilt/sliding sunroof* us-
ing the SmartKey (
page 234).
iWhen you unlock the vehicle, the elec-
trohydraulic brake system is activated
(page 96).
Page 120 of 521

119 Controls in detail
Locking and unlocking
Opening the doors from the inside
You can open a locked door from the in-
side. Open door only when conditions are
safe to do so.
1Locking knob
2Inside door handle
Front doors
Pull on door handle2 on the
respective front door to open door.
If door was locked, locking knob1 will
move up.Rear doors
Pull up locking knob1 on the
respective rear door to unlock door.
Pull on door handle2 on the
respective rear door to open door.iIf the vehicle has previously been
locked with the SmartKey or
KEYLESS-GO*, opening a door from the
inside will trigger the anti-theft alarm
system.
To cancel the alarm, do one of the fol-
lowing:
Press button Œ or ‹ on the
SmartKey.
Insert the SmartKey in the starter
switch.
In vehicles with KEYLESS-GO*:
Press the KEYLESS-GO* start/stop
button (
page 38).
The SmartKey with KEYLESS-GO
must be inside the vehicle.
Pull an outside door handle.
The SmartKey with KEYLESS-GO
must be within 3 ft (1 m) of the ve-
hicle.
Page 125 of 521

124 Controls in detailLocking and unlockingIf the tailgate comes into contact with an
object while closing (e.g. luggage that has
been piled too high), the closing procedure
is stopped and the tailgate reopens
slightly.
iYou can also close the tailgate by hand.
Warning!
G
Monitor the closing procedure carefully to
make sure no one is in danger of being in-
jured. To prevent possible personal injury,
always keep hands and fingers away from
the cargo compartment opening when clos-
ing the tailgate. Be especially careful when
small children are around. To stop the clos-
ing procedure, do one of the following:
press the tailgate closing switch1
(page 123)
press button Š on the SmartKey
pull the remote tailgate switch (on the
driver’s door) (
page 121)
Even with the SmartKey removed from the
starter switch, the tailgate closing switch
can be operated. Therefore, do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. Unsuper-
vised use of vehicle equipment may cause
an accident and/or serious personal injury.
Warning!
G
Only drive with the tailgate closed as,
among other dangers such as blocked visi-
bility, exhaust fumes may enter the vehicle
interior.iDo not place the SmartKey in the open
cargo compartment. You may lock
yourself out.iIf the vehicle was previously centrally
locked, the tailgate will lock automati-
cally after closing it.
To confirm locking all turn signal lamps
flash three times.
Page 134 of 521

133 Controls in detailSeats
Lumbar support
The curvature of the driver’s seat can be
adjusted to help enhance lower back sup-
port and seating comfort.
1Adjustment lever
Move adjustment lever1 in direction
of the arrows until you have reached a
comfortable seating position.Drive - Dynamic seat* with multicon-
tour features
The Drive - Dynamic seat automatically ad-
justs the lateral support provided by the
backrest to your driving style.
The Drive - Dynamic seat electronically
controls the air pressure in the air cham-
bers of the backrest side bolsters. This
function improves driving comfort and
pleasure.
In addition, the Drive-Dynamic seat has a
movable seat cushion and inflatable air
cushions built into the backrest to provide
additional lumbar and side support.
The seat cushion movement, backrest
cushion height and curvature can be con-
tinuously varied with switches on the right
side of the seat on the driver side, or the
left side of the seat on the passenger side
after turning the SmartKey in the starter
switch to position2 or pressing the KEY-
LESS-GO* start/stop button twice.1Backrest center
2Backrest bottom
3Seat cushion depth
4Activate drive dynamic function
5Backrest side bolsters
6Massage function
Switch on the ignition (
page 36).