33 Getting started
Unlocking
Unlocking with KEYLESS-GO*
With the KEYLESS-GO function, you can
lock and unlock the vehicle without using
the remote control buttons on the
SmartKey and start the engine without in-
serting the SmartKey in the starter switch.
Grasp an outside door handle.
All turn signal lamps flash once. The ve-
hicle unlocks. The locking knobs in the
doors move up. The anti-theft alarm
system is disarmed.
Get in the vehicle.
For more information, see “SmartKey with
KEYLESS-GO*” (
page 96).
iTo unlock the vehicle, the SmartKey
with KEYLESS-GO must be outside the
vehicle, no further than approximately
3 feet (1 meter) away from the door.
Warning!
G
When leaving the vehicle, always take the
SmartKey with KEYLESS-GO* with you and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. Unsupervised use of vehi-
cle equipment may cause an accident
and/or serious personal injury.
iIf the vehicle has been parked for more
than 72 hours, you must pull an outside
door handle in order to activate the
KEYLESS-GO function.
34 Getting startedUnlockingStarter switch positions
SmartKeyStarter switch
0For removing SmartKey
1Power supply for some electrical con-
sumers, such as seat adjustment
2Ignition (power supply for all electrical
consumers) and driving position.
All lamps (except high beam headlamp
indicator lamp and turn signal indicator
lamps unless activated) in the instru-
ment cluster come on. If a lamp in the
instrument cluster fails to come on
when the ignition is switched on, have
it checked and replaced if necessary.
If a lamp in the instrument cluster re-
mains on after starting the engine or
comes on while driving, refer to “Lamps
in instrument cluster” (
page 340).
3Starting position
Warning!
G
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. Unsupervised use of vehi-
cle equipment may cause an accident
and/or serious personal injury.
iWhen you switch on the ignition, the in-
dicator and warning lamps (except high
beam headlamp indicator lamp and
turn signal indicator lamps unless acti-
vated) in the instrument cluster come
on. The indicator and warning lamps
(except high beam headlamp indicator
lamp and turn signal indicator lamps if
activated) should go out when the en-
gine is running. This indicates that the
respective systems are operational.iThe SmartKey can only be removed
from the starter switch with the gear
selector lever in position P.
35 Getting started
Unlocking
For information on starting the engine us-
ing the SmartKey, see “Starting with the
SmartKey” (
page 46).SmartKey with KEYLESS-GO*
Pressing the KEYLESS-GO start/stop but-
ton on the gear selector lever corresponds
to turning the SmartKey to the various
starter switch positions.
If you firmly depress the brake pedal dur-
ing pressing KEYLESS-GO start/stop but-
ton, the engine starts automatically.
KEYLESS-GO start/stop button1USA only
2Canada only
The SmartKey with KEYLESS-GO must be
located in the vehicle.
Make sure the gear selector lever is set
toP.
Do not depress the brake pedal.
!If the SmartKey cannot be turned in the
starter switch, the battery may not be
sufficiently charged.
Check the battery and charge it if
necessary (
page 408).
Get a jump start (
page 411).
To prevent accelerated battery dis-
charge or a completely discharged bat-
tery, always remove the SmartKey from
the starter switch when the engine is
not in operation.
iThe function of the SmartKey overrules
the KEYLESS-GO function.
36 Getting startedUnlockingPosition 0
Before you press the KEYLESS-GO
start/stop button, the vehicle’s on-board
electronics have status 0 (as with
SmartKey removed).
Position 1
Press KEYLESS-GO start/stop button
once.
This supplies power for some electrical
consumers, such as seat adjustment.Ignition (or position 2)
Press KEYLESS-GO start/stop button
twice.
This supplies power for all electrical
consumers.
All lamps (except high beam headlamp
indicator lamp and turn signal indicator
lamps unless activated) in the instru-
ment cluster come on. If a lamp in the
instrument cluster fails to come on
when the ignition is switched on, have
it checked and replaced if necessary.
If a lamp in the instrument cluster re-
mains on after starting the engine or
comes on while driving, refer to “Lamps
in instrument cluster” (
page 340).
For information on starting the engine us-
ing the KEYLESS-GO start/stop button,
see “Starting with KEYLESS-GO*”
(
page 47).
iIf you now press the KEYLESS-GO
start/stop button
once again, the ignition (position2)
is switched on
twice, the power supply is again
switched off
iIf you now press the KEYLESS-GO
start/stop button once, the power sup-
ply is again switched off.iWhen you switch on the ignition, the in-
dicator and warning lamps (except high
beam headlamp indicator lamp and
turn signal indicator lamps unless acti-
vated) in the instrument cluster come
on. The indicator and warning lamps
(except high beam headlamp indicator
lamp and turn signal indicator lamps if
activated) should go out when the en-
gine is running. This indicates that the
respective systems are operational.
37 Getting started
Adjusting
Adjusting
SeatsWarning!
G
All seat, head restraint, steering wheel, and
rear view mirror adjustments, as well as fas-
tening of seat belts, must be done before
the vehicle is put into motion.Warning!
G
Do not adjust the driver’s seat while driving.
Adjusting the seat while driving could cause
the driver to lose control of the vehicle.
Never ride in a moving vehicle with the seat
back in an excessively reclined position as
this can be dangerous. You could slide un-
der the seat belt in a collision. If you slide
under it, the belt would apply force at the ab-
domen or neck. That could cause serious or
fatal injuries. The seat backrest and seat
belts provide the best restraint when the
wearer is in a nearly upright position and
belts are properly positioned on the body.
Your seat must be adjusted so that you can
correctly fasten your seat belt (
page 43).
Never place hands under the seat or near
any moving parts while a seat is being ad-
justed.
Warning!
G
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock the vehicle.
Even with the SmartKey or SmartKey with
KEYLESS-GO* removed from the starter
switch or the SmartKey with KEYLESS-GO*
removed from the vehicle, the power seats
can be operated when the respective door is
open. Therefore, do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. Unsupervised use of vehi-
cle equipment may cause an accident
and/or serious personal injury.
Warning!
G
Children 12 years old and under must never
ride in the front seat, except in a
Mercedes-Benz authorized BabySmart
TM1
compatible child seat, which operates with
the BabySmart
TM system installed in the ve-
hicle to deactivate the passenger front
air bag when it is properly installed. Other-
wise they will be struck by the air bag when
it inflates in a crash. If this happens, serious
or fatal injury will result.
According to accident statistics, children
are safer when properly restrained in the
rear seating positions than in the front seat-
ing positions. Infants and small children
must ride in back seats and be seated in an
appropriate infant or child restraint system,
which is properly secured with the vehicle’s
seat belt and top tether strap, or secured via
lower anchors and top tether strap, fully in
accordance with the child seat manufactur-
er’s instructions.
1BabySmart
TM is a trademark of Siemens Automo-
tive Corp.
40 Getting startedAdjustingSteering wheel Steering wheel adjustment
The stalk for steering wheel adjustment is
located on the steering column (lower left).
1Adjusting steering column, in or out
2Adjusting steering column, up or down
Switch on the ignition (
page 34).
or
Open the driver’s door.Adjusting steering column in or out
Move stalk forward or back in the direc-
tion of arrow1 until a comfortable
steering wheel position is reached with
your arms slightly bent at the elbow.
Adjusting steering column up or down
Move the stalk up or down in the direc-
tion of arrow2.
Make sure your legs can move freely
and all the displays (incl. malfunction
and indicator lamps) on the instrument
cluster are clearly visible.
For more information, see “Heated steer-
ing wheel* (except S 55 AMG and
S65AMG)” (
page 252).
Warning!
G
Do not adjust the steering wheel while driv-
ing. Adjusting the steering wheel while driv-
ing could cause the driver to lose control of
the vehicle.
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock the vehicle.
Even with the SmartKey or SmartKey with
KEYLESS-GO* removed from the starter
switch or the SmartKey with KEYLESS-GO*
removed from the vehicle, the steering
wheel adjustment feature can be operated
when the driver’s door is open. Therefore,
do not leave children unattended in the ve-
hicle, or with access to an unlocked vehicle.
Unsupervised use of vehicle equipment may
cause an accident and/or serious personal
injury.
iThe memory function (
page 128) lets
you store settings for the steering
wheel together with the settings for the
exterior rear view mirrors and the seat
position.
46 Getting startedDrivingStarting the engine Automatic transmission
Gearshift pattern for automatic
transmissionPPark position with gear selector lever
lock
RReverse gear
NNeutral
DDrive position
For more information, see the “Controls in
detail” section (
page 173).Starting with the SmartKey
Make sure the gear selector lever is set
toP.
Do not depress accelerator.
Turn the SmartKey in the starter switch
to position3 and hold until the engine
starts (
page 34).
For information on turning off the engine
with the SmartKey, see “Turning off with
the SmartKey” (
page 57).
Warning!
G
Inhalation of exhaust gas is hazardous to
your health. All exhaust gas contains carbon
monoxide, and inhaling it can cause uncon-
sciousness and lead to death.
Do not run the engine in confined areas
(such as a garage) which are not properly
ventilated. If you think that exhaust gas
fumes are entering the vehicle while driving,
have the cause determined and corrected
immediately. If you must drive under these
conditions, drive with at least one window
fully open.
iYou can also use the “touch-start”
function. Turn the SmartKey to
position3 and release it again immedi-
ately. The engine then starts automati-
cally.
47 Getting started
Driving
Starting with KEYLESS-GO*
You can start your vehicle without the
SmartKey in the starter switch using the
KEYLESS-GO start/stop button on the
gear selector lever.
The SmartKey with KEYLESS-GO must be
located in the vehicle.
KEYLESS-GO start/stop button1USA only
2Canada only
Make sure the gear selector lever is set
toP.
Depress the brake pedal during the
starting procedure. Do not depress ac-
celerator.
The gear selector lever lock is released.
Press KEYLESS-GO start/stop button
once.
The engine starts if the SmartKey with
KEYLESS-GO is in the vehicle.
For information on turning off the engine
with KEYLESS-GO, see “Turning off the en-
gine with KEYLESS-GO*” (
page 57).
Warning!
G
As long as the SmartKey with KEYLESS-GO
i s i n y o u r v e h i c l e , t h e v e h i c l e c a n b e s t a r t e d .
Therefore, never leave children unattended
in the vehicle, as they could otherwise acci-
dentally start the engine.
When leaving the vehicle, always take the
SmartKey with KEYLESS-GO with you and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle.