Page 31 of 399

31 Getting started
Unlocking
Starter switch positionsStarter switch0For removing key
1Power supply to some electrical con-
sumers, such as seat adjustment
2Ignition (power supply for all electrical
consumers) and driving position
3Starting position
Warning!
G
When leaving the vehicle always remove the
key from the starter switch, take the Smart-
Key with KEYLESS-GO* (if so equipped) with
you and lock the vehicle. Do not leave chil-
dren unattended in the vehicle, or with ac-
cess to an unlocked vehicle. Unsupervised
use of vehicle equipment may cause serious
personal injury.iThe SmartKey can only be removed
from the starter switch with the gear
selector lever in position P.
!If the key is left in starter switch
position0 for an extended period of
time, it can no longer be turned in the
starter switch.
Remove the key from the starter
switch and reinsert.
If the key can still not be turned, the
battery may not be sufficiently
charged.
Check the battery and charge it
if necessary (
page 266).
Get a jump start (
page 346).
To prevent accelerated battery dis-
charge or a completely discharged bat-
tery, always remove the key from the
starter switch.
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Page 32 of 399

32 Getting startedUnlockingUnlocking with KEYLESS-GO*
Your vehicle comes supplied with two
SmartKeys with remote controls and a re-
movable mechanical key. The locking tabs
for the mechanical key portion of the two
keys are a different color to help distin-
guish each key unit.
The function of the SmartKey overrules the
KEYLESS-GO function.
If you have the KEYLESS-GO function, your
vehicle checks whether the SmartKey with
KEYLESS-GO is valid when you grasp the
door handle. If your key is valid, the doors
will unlock, and you can open them.
Grasp the door handle.
The turn signal lamps blink once. The
locking knobs on the doors move up.
Pressing the KEYLESS-GO start/stop but-
ton on the selector lever corresponds to
turning the key to the various starter
switch positions.
iTo unlock the vehicle, the SmartKey
with KEYLESS-GO must be outside the
vehicle, no further than approx. 3 feet
(1 meter) away from the door. Warning!
G
When leaving the vehicle always take the
key and the SmartKey with KEYLESS-GO
with you, and lock the vehicle. Do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. Unsuper-
vised use of vehicle equipment may cause
serious personal injury.
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Page 33 of 399
33 Getting started
Unlocking
1KEYLESS-GO start/stop button
Before you press the KEYLESS-GO
start/stop button, the vehicle’s on-board
electronics have status 0 (as with key re-
moved).Make sure the gear selector lever is set
toP.
Do not depress the brake pedal.
Position 1
Press the KEYLESS-GO start/stop but-
ton once.
This supplies power to some electrical
consumers, such as seat adjustment.Ignition (or position 2)
Press the KEYLESS-GO start/stop but-
ton twice.
This supplies power to all electrical
consumers. All the lights in the instru-
ment cluster light up.
More information can be found in the
"Controls in detail" section (
page 89).
For information on starting the engine us-
ing the KEYLESS-GO start/stop button,
see "Starting with KEYLESS-GO"
(
page 44).
iIf you now press the KEYLESS-GO
start/stop button 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.
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Page 34 of 399

34 Getting startedAdjusting
AdjustingSeatsWarning!
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 reclined. Sitting in an excessively re-
clined position can be dangerous. You could
slide under the seat belt in a collision. If you
slide under it, the belt would apply force at
the abdomen or neck. That could cause se-
rious or fatal injuries. The seat back and seat
belts provide the best restraint when the
wearer is in an 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 40).
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
key from the starter switch, take the Smart-
Key with KEYLESS-GO* (if so equipped) with
you, and lock your vehicle.
The power seats can also be operated with
the driver’s or passenger door open. Do not
leave children unattended in the vehicle, or
with access to an unlocked vehicle. Unsu-
pervised use of vehicle equipment may
cause 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
TM
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. Otherwise
they will be struck by the airbag when it in-
flates 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, fully in accordance with the child
seat manufacturer’s instructions.
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Page 37 of 399

37 Getting started
Adjusting
Folding rear head restraints back with
switch in the center console
1Head restraint release switch
Turn the electric key in starter switch
to position1 or 2.
Press the symbol-side on rocker
switch1 to release the head restraints.
The head restraints will fold backward.Placing rear head restraints upright
Pull the head restraint forward until it
locks into position.
Steering wheelWarning!
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
key from the starter switch, take the Smart-
Key with KEYLESS-GO* (if so equipped) with
you and lock your vehicle.
The electrical steering wheel adjustment
feature can also be operated with the driv-
er’s door open. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. Unsupervised use of vehi-
cle equipment may cause serious personal
injury.
ProCarManuals.com
Page 43 of 399

43 Getting started
Driving
Starting the engine Automatic transmission
Gearshift pattern for automatic
transmissionPPark position with selector lever lock
RReverse gear
NNeutral
DDrive position
Make sure that the gear selector lever
is set toP.
More information can be found in the
"Controls in detail" section (
page 151).
Warning!
G
Do not pass belts over sharp edges. They
could tear.
Do not allow the belt to get caught in the
door or in the seat adjustment mechanism.
This could damage the belt.
Never attempt to make modifications to
seat belts. This could impair the effective-
ness of the belts.
Damaged seat belts or belts that were highly
stressed in an accident must be replaced by
an authorized Mercedes-Benz Center.
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 only with at least one win-
dow fully open.
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Page 44 of 399

44 Getting startedDrivingStarting with the key
Turn the key in the starter switch to
position3 and hold until the engine
starts (
page 31).
Depress the brake pedal.
The selector lever lock is released.
For information on turning off the engine
with the key, see “Turning off the engine”
(
page 51).
Starting with KEYLESS-GO*
You can start your vehicle without a key
using the KEYLESS-GO start/stop button
on the gear selector lever.1KEYLESS-GO start/stop button
Depress the brake pedal during the
starting procedure. Do not depress ac-
celerator.
The selector lever lock is released.
Press KEYLESS-GO start/stop
button1 once.
The engine starts automatically.
For information on turning off the engine
with KEYLESS-GO, see “Turning off with
KEYLESS-GO*” (
page 53).Starting difficulties
If the engine does not start as described,
carry out the following steps:
If you are starting the engine with the
key, turn key in starter switch to
position0 and repeat starting proce-
dure.
If you are starting the engine with
KEYLESS-GO*: Close any doors that
may be open to allow for better detec-
tion of the SmartKey with
KEYLESS-GO*.
Or:
Start the engine with the key as radio
signals from another source may be in-
terfering with the SmartKey with
KEYLESS-GO*.
Repeat the starting procedure
(page 43). Remember that extended
starting attempts can drain the battery.
iYou can also use the "touch-start" func-
tion. Turn the key to position3 and re-
lease it again immediately. The engine
then starts automatically.
!Ensure that the brake pedal is de-
pressed when starting the engine.
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Page 45 of 399

45 Getting started
Driving
Get a jump start (
page 346).
If the engine does not start after several
starting attempts, there could be a mal-
function in the engine electronics or in the
fuel supply system.
Notify an authorized Mercedes-Benz
Center.
Parking brake
1Parking brake pedal
2Parking brake release handle
Release the parking brake by pulling on
handle2.
The indicator lamp ; (USA only) or
3 (Canada only) in the clock goes
out.
Driving
Depress the brake pedal.
Move selector lever to positionDorR.
Release the brake pedal.
Carefully depress the accelerator
pedal.
Once the vehicle is in motion, the automat-
ic central locking system engages and the
locking knobs drop down.
Warning!
G
When leaving the vehicle always remove the
key from the starter switch, take the Smart-
Key with KEYLESS-GO* (if so equipped) with
you and lock the vehicle. Do not leave chil-
dren unattended in the vehicle, or with ac-
cess to an unlocked vehicle. Children could
release the parking brake, which could re-
sult in an accident or serious injury.
iWait for the gear selection process to
complete before setting the vehicle in
motion.iYou can open a locked door from the
inside. Open door only when conditions
are safe to do so.!If you hear a warning signal when driv-
ing off, you have forgotten to release
the parking brake.
Release the parking brake.
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