329 Controls in detail
Locking and unlocking
Find the SmartKey with KEYLESS-GO or
change its present location immediate-
ly (e.g. place it on the front passenger
seat or insert it in shirt pocket).
If you have started the engine with the
KEYLESS-GO start/stop button, you
can turn it off again with:
the KEYLESS-GO start/stop button
the SmartKey with KEYLESS-GO in-
serted in the starter switch, when
the automatic transmission is in
positionP
Remember that the engine can be
started by anyone with a SmartKey
with KEYLESS-GO that is left inside the
vehicle.
Possibility 1: (One SmartKey with
KEYLESS-GO in the vehicle, one
SmartKey with KEYLESS-GO outside
the vehicle):
If you leave the SmartKey with
KEYLESS-GO behind when exiting and
locking the vehicle, no message
appears in the multifunction display.
Possibility 2: (One SmartKey with
KEYLESS-GO in the vehicle, no
SmartKey with KEYLESS-GO outside
the vehicle):
When exiting and trying to lock the ve-
hicle, the message “Key still in vehicle”
appears in the multifunction display.
The vehicle will not be locked.Factory setting
1Outside door handle
iWhen unlocking or locking the vehicle with
the SmartKey with KEYLESS-GO an acoustic sig-
nal sounds. The acoustic signal is activated at
the factory. If you wish to deactivate the feature,
or adjust its signal volume, contact an authorized
Mercedes-Benz Center.
333 Controls in detail
Locking and unlocking
Opening 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
Pull on door handle2 on the respec-
tive door to open door.
If door was locked, locking knob1 will
move up.
iWhen you open a door, the side window on
that side lowers slightly. Once you close the
door, the window moves up again.
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 following:
Insert the SmartKey or SmartKey with
KEYLESS-GO* in the starter switch.
Press button Œ or ‹ on the SmartKey
or SmartKey with KEYLESS-GO*.
In vehicles with KEYLESS-GO*:
Grasp an outside door handle.
The SmartKey with KEYLESS-GO* must be
within 3 ft (1 m) of the vehicle.
Press the KEYLESS-GO* start/stop button
(
page 337).
The SmartKey with KEYLESS-GO* must be
inside the vehicle.
iIf you hear a warning signal you have forgot-
ten to switch off the headlamps before opening
the driver’s door.
In addition the message “Please switch off
lights” appears in the multifunction display.
Switch off the headlamps.
!Failure to switch off the headlamps when
leaving the vehicle may result in a discharged
battery.
343 Controls in detail
Seats
For information on additional convenience
features permitting easy entry and exit,
see “Easy-entry/exit feature”
(
page 344).
Warning!G
The seat belts provide protection only with
the backrest locked in place. Therefore, the
backrest must be locked in place with the
vehicle in motion. Do not drive the vehicle
when the backrest is not locked in place.
If the warning message:
Seat backrest,
Front Right
not locked
or
Seat backrest,
Front Left
not locked
is displayed in the multifunction display,
then the respective backrest is not engaged
in its lock. Carefully slow down, and drive
with caution to an area which is in a safe dis-
tance from the roadway. Always provide suf-
ficient room behind the backrest and fold
the backrest all the way back until it locks in
place.
The warning message is no longer displayed
as soon as the backrest is locked in place. If
both backrests are locked in place and the
warning message is still displayed, have the
system checked at an authorized
Mercedes-Benz Center immediately.
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.
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. A child’s
unsupervised access to a vehicle could re-
sult in an accident and/or serious personal
injury.
Never place hands under seat or near any
moving parts during a seat adjustment pro-
cedure.!The automatic seat slide is provided with a
safety feature.
The automatic process is interrupted if the back-
rest of the sliding seat is pushed against an oc-
cupant or object. The seat will slide forward and
stop.
Investigate and correct the cause of interruption.
Now use memory button (
page 358) or seat
adjustment switch (
page 340) to bring the
seat into the desired position.
When folding the backrest forward from a re-
clined position, and then folding it back, the
backrest stops in a more upright position for the
safety of any rear-seat passenger. Adjust the
backrest until your arms are slightly angled when
holding the steering wheel (
page 340).
351 Controls in detail
Steering wheel
Steering wheel
Make sure that
you can reach the steering wheel with
your arms slightly bent at the elbows
you can move your legs freely
all displays (including malfunction and
indicator lamps) on the instrument
cluster are clearly visible
Steering wheel adjustment
1Adjusting steering wheel, in or out
2Adjusting steering column, up or down
Switch on the ignition (page 336) or
open the driver’s door.
Adjusting steering wheel 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 wheel up or
down: Move stalk up or down in the di-
rection of arrow2.
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.
A child’s unsupervised access to a vehicle
could result in an accident and/or serious
personal injury.
iThe memory function (page 357) lets you
store settings for the steering wheel together
with the settings for the seat position and the ex-
terior rear view mirrors.
363 Controls in detail
Lighting
Lighting
Exterior lamp switch
The exterior lamp switch is located on the
dashboard to the left of the steering wheel.
iIf you drive in countries where vehicles drive
on the other side of the road than the country in
which the vehicle is registered, you must have
the headlamps modified for symmetrical low
beams. Relevant information can be obtained at
your authorized Mercedes-Benz Center.
iThe active Bi-Xenon headlamps monitor
your steering angle and driving speed, then auto-
matically shift their beams to either side to bet-
ter follow the curvature of the road ahead,
increasing usable illumination over conventional
headlamps.
1‚Standing lamps, left (turn left two
stops)
2ˆStanding lamps, right (turn left
one stop)
3MOff
Daytime running lamp mode
(
page 365)
4*Automatic headlamp mode
Daytime running lamp mode
(
page 365)
5CParking lamps (also side marker
lamps, tail lamps, license plate
lamps, instrument panel lamps)
6BLow beam headlamps or high
beam headlamps when the com-
bination switch is pushed for-
ward. The tail lamps, license
plate lamps, side marker lamps,
parking lamps and instrument
panel lamps also come on.
7‡Front fog lamps
8†Rear fog lamp
iIf you hear a warning signal you have forgot-
ten to switch off the headlamps before opening
the driver’s door.
In addition the message “Please switch off
lights” appears in the multifunction display.
Switch off the headlamps.
!Failure to switch off the headlamps when
leaving the vehicle may result in a discharged
battery.
379 Controls in detail
Driving and parking
Starting with the SmartKey
Make sure the automatic transmission
is set toP.
The gear position indicator in the ta-
chometer display should be on P.
Do not depress accelerator.
Turn the SmartKey in the starter switch
to position3 and hold until the engine
starts (
page 336).
For information on turning off the engine
with the SmartKey, see “Turning off the en-
gine” (
page 387).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
starter switch.
The SmartKey with KEYLESS-GO must be
located in the vehicle.
KEYLESS-GO* start/stop button
1USA only
2Canada only
Make sure KEYLESS-GO start/stop
button is inserted in the starter switch
(
page 337).
Make sure the automatic transmission
is set toP.
The gear position indicator in the ta-
chometer display should be on P.
Depress the brake pedal during the
starting procedure.
Do not depress accelerator.
iYou can also use the “touch-start” function.
Turn the SmartKey to position 3 and release it
again immediately. The engine then starts auto-
matically.
iYou can also start the engine with the auto-
matic transmission set to N.
Warning!G
As long as the SmartKey with KEYLESS-GO
is in your vehicle, the vehicle can be started.
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. A child’s unsupervised ac-
cess to a vehicle could result in an accident
and/or serious personal injury.
381 Controls in detail
Driving and parking
The engine does not start. You cannot
hear the starter.
The battery may not be sufficiently
charged.
Get a jump start (page 660).
If the engine will not start despite a jump
start:
Call Roadside Assistance.
Contact an authorized Mercedes-Benz
Center or call Roadside Assistance.
Driving off
Depress the brake pedal.
The gear selector lever can now be
used.
Shift automatic transmission toD orR.
Release the brake pedal.
Carefully depress the accelerator
pedal.
The electronic parking brake is auto-
matically released (
page 384).
The red brake warning lamp 0
(USA only) or ! (Canada only) in the
instrument cluster goes out.After a cold start, the automatic transmis-
sion shifts at a higher engine revolution.
This allows the catalytic converter to reach
its operating temperature earlier.
iWait for the gear selection process to com-
plete before setting the vehicle in motion.
iShifting from gear position P to position R,
N, or D is only possible with the brake pedal de-
pressed. Without the brake pedal depressed, the
gear selector lever can be moved, but the park-
ing pawl remains engaged, not allowing shifting
to occur.
!If you hear a warning signal, the red indica-
tor lamp 0 (USA only) or ! (Canada only)
in the instrument cluster flashes and the mes-
sage “Please release parking brake” appears in
the multifunction display when driving off, you
are driving with the electronic parking brake en-
gaged, or you are carrying out an emergency
brake application with the electronic parking
brake.
Release the electronic parking brake
(
page 384).
iOnce the vehicle is in motion, the automatic
central locking system engages and the locking
knobs in the doors move down.
The automatic door lock feature can be deacti-
vated (
page 238).
You can open a locked door from the inside.
Open door only when conditions are safe to do
so.
383 Controls in detail
Driving and parking
Problems while driving
The engine runs erratically and misfires
An ignition cable may be damaged.
The engine electronics may not be op-
erating properly.
Unburned gasoline may have entered
the catalytic converter and damaged it.
Give very little gas.
Have the problem repaired by an au-
thorized Mercedes-Benz Center as
soon as possible.The coolant temperature is above
248°F (120°C)
The coolant is too hot and is no longer
cooling the engine.
Stop the vehicle in a safe location as
soon as possible and turn off the en-
gine. Allow engine and coolant to cool
off.
Check the coolant level and add cool-
ant if necessary (
page 518).In case of accident
If the vehicle is leaking gasoline:
Do not start the engine under any cir-
cumstances.
Move away from vehicle.
Notify local fire and/or police authori-
ties.
If the extent of the damage cannot be de-
termined:
Contact an authorized Mercedes-Benz
Center or call Roadside Assistance.
If no damage can be determined on the
major assemblies
fuel system
engine mount:
Start the engine in the usual manner.
iTo signal minor directional changes such as
changing lanes, press combination switch only
to point of resistance and release. The corre-
sponding turn signals will flash three times.
iExcessive coolant temperatures trigger a
warning message in the multifunction display
(
page 580).