
vehicle electronics can be damaged if water
enters the vehicle interior. Only clean the slid-
ing sunroof when it is closed.
Resonance noises can occur in addition to the
usual airflow noises when the sliding sunroof is
open. They are caused by minor pressure fluc-
tuations in the vehicle interior. Change the posi-
tion of the sliding sunroof or open a side window
slightly to reduce or eliminate these noises.
Sliding sunroof reversing feature
The sliding sunroof is equipped with an auto-
matic reversing feature. If a solid object blocks
or restricts the sliding sunroof during the closing
process, the sliding sunroof opens again auto-
matically. The automatic reversing feature is
only an aid and is no substitute for your attention when closing the sliding roof.
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 sliding sunroof 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 somebody becomes trapped:
Rrelease the switch immediately, or
Rpress the switch in any direction during the
automatic closing process
The closing process is stopped.
Operating the sliding sunroof
Opening and closing
:To raise
;To open
=To close/lower
XTurn the SmartKey to position 1or 2in the
ignition lock.
XPress or pull the 3switch in the corre-
sponding direction.
If you press or pull the 3switch beyond the
point of resistance, automatic operation is star-
ted in the corresponding direction. You can stop
automatic operation by pressing or pulling
again.
If the sliding sunroof is raised at the rear, it low-
ers slightly automatically at higher speeds. The
noise level in the vehicle interior is reduced as a
result.
At low speeds it raises again automatically.
You can also temporarily deactivate automatic
lowering. To do so, press the 3switch. The
sliding sunroof raises again automatically.
You can continue to operate the sliding sunroof
after switching off the engine or removing the
SmartKey from the ignition lock. This function
remains active for five minutes or until you open a front door.
The sliding sunroof cannot be opened if a roof
carrier is installed. In order to allow ventilation
of the vehicle interior, you can raise the sliding
sunroof.
If contact is made with a roof carrier approved
by Mercedes-Benz, the sliding sunroof lowers
slightly but remains raised at the rear.
Before opening, raising or closing the sliding
sunroof, a check is carried out to see whether a
valid SmartKey is in the vehicle, if:
Rthe 3 switch is pressed or pulled
Panorama roof with power tilt/sliding panel95
Opening and closing
Z 

Problems with the steering wheel heating
ProblemPossible causes/consequences andMSolutions
The steering wheel heat-
ing has switched off pre-
maturely or cannot be
switched on.The on-board voltage is too low because too many electrical consum-
ers are switched on.
XSwitch off electrical consumers that you do not need, such as the
rear window defroster or interior lighting.
EASY-ENTRY/EXIT feature
Important safety notes
GWARNING
When the EASY-ENTRY/EXIT feature adjusts
the steering wheel and the driver's seat, you
and other vehicle occupants – particularly
children – could become trapped. There is a
risk of injury.
While the EASY-ENTRY/EXIT feature is mak-
ing adjustments, make sure that no one has
any body parts in the sweep of the seat and
the steering wheel.
If there is a risk of becoming trapped by
Rthe steering wheel: move the steering
wheel adjustment lever.
Rthe seat: press the switch for seat adjust-
ment.
The adjustment process is stopped.
You can stop the adjustment process by press-
ing one of the memory function's position but-
tons. This function is only available on vehicles
with memory function.
GWARNING
If children activate the EASY-ENTRY/EXIT fea-
ture, they can become trapped, particularly
when unattended. There is a risk of injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
GWARNING
If you drive off while the EASY-ENTRY/EXIT
feature is making adjustments, you could lose
control of the vehicle. There is a risk of an
accident.
Always wait until the adjustment process is
complete before driving off.
The EASY-ENTRY/EXIT feature makes getting in
and out of your vehicle easier.
You can activate and deactivate the EASY-
ENTRY/EXIT feature using the multimedia sys-
tem (see the Digital Operator's Manual).
Position of the steering wheel and the
driver's seat when the EASY-ENTRY/
EXIT feature is active
The steering wheel tilts upwards and the driver's seat moves backwards if you:
Rremove the SmartKey from the ignition lock
Rwith the start/stop button: open the driv-
er's door; the ignition must be switched off
Rwith the SmartKey: open the driver's door;
the SmartKey must be in position 0or 1in the
ignition lock (
Ypage 145)
iThe steering wheel only tilts upwards and
the driver's seat only moves backwards if the
driving position is stored after the seat or
steering column has been adjusted.
The last position of the steering wheel or seat is
stored if:
Rthe ignition is switched off
Rthe setting is stored with the memory function
(Ypage 120).
iThe steering wheel only moves upwards if it
has not already reached the upper stop. The
driver's seat only moves backwards if it is not
already in the rearmost position.
116Steering wheel
Seats, steering wheel and mirrors 

Position of the steering wheel and the
driver's seat for driving
The steering wheel and the driver's seat are
moved to the previously set position if:
Rthe driver's door is closed and you insert the
SmartKey into the ignition lock
Ryou close the driver's door when the ignition
is switched on
Ryou press the Start/Stop button once
iThe steering wheel and the driver's seat only
return to the last set position if the driving
position is stored after the seat or steering
column has been adjusted.
The last position of the steering wheel or seat is
stored if:
Rthe ignition is switched off
Rthe setting is stored with the memory function
(Ypage 120).
Crash-responsive EASY-EXIT feature
If the crash-responsive EASY-EXIT feature is trig-
gered in an accident, the steering column will
move upwards when the driver's door is opened
or the SmartKey is removed from the ignition
lock. This makes it easier to exit the vehicle and rescue the occupants.
The crash-responsive EASY-EXIT feature is only
operational if the EASY-EXIT/ENTRY feature is
activated in the multimedia system (see the sep-
arate Operator's Manual).
Mirrors
Rear-view mirror
XAnti-glare mode: flick anti-glare lever :for-
wards or back.
Exterior mirrors
Important safety notes
GWARNING
You could lose control of your vehicle if you do the following while driving:
Radjust the driver's seat, head restraint,
steering wheel or mirrors
Rfasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirror and fasten your seat belt before starting the engine.
GWARNING
The exterior mirror on the front-passenger
side reduces the size of the image. Visible
objects are actually closer than they appear.
This means that you could misjudge the dis-
tance from road users traveling behind, e.g.
when changing lane. There is a risk of an acci-
dent.
For this reason, always make sure of the
actual distance from the road users traveling
behind by glancing over your shoulder.
Adjusting the exterior mirrors
XSwitch on the power supply or the ignition
(Ypage 146).
XExterior mirror on the front-passenger side:
press button ;.
Exterior mirror on the driver's side: press but-
ton =.
The indicator lamp lights up in the button that
has been pressed.
Mirrors117
Seats, steering wheel and mirrors
Z 

Exterior lighting
General notes
USA only: if you wish to drive during the daytime
without lights, switch off theDaytime Run‐
ning Lightsfunction via the on-board com-
puter (Ypage 225).
Setting the exterior lighting
Setting options
Exterior lighting can be set using:
Rthe light switch (Ypage 124)
Rthe combination switch (Ypage 125)
Rthe on-board computer (Ypage 225)
Light switch
Operation
1 WLeft-hand standing lamps
2XRight-hand standing lamps
3TParking lamps, license plate and
instrument cluster lighting
4ÃAutomatic headlamp mode, controlled
by the light sensor
5 LLow-beam/high-beam headlamps
If you hear a warning tone when you leave the
vehicle, the lights may still be switched on.
XTurn the light switch to the Ãposition.
The exterior lighting (except the parking/stand-
ing lamps) switches off automatically if you:
Rremove the SmartKey from the ignition lock
Ropen the driver's door with the SmartKey in
position 0in the ignition lock
Automatic headlamp mode
GWARNING
When the light switch is set to Ã, the low-
beam headlamps may not be switched on
automatically if there is fog, snow or other
causes of poor visibility due to the weather
conditions such as spray. There is a risk of an
accident.
In such situations, turn the light switch to
L.
The automatic headlamp feature is only an aid.
The driver is responsible for the vehicle's light-
ing at all times.
à is the favored light switch setting.
The light setting is automatically selected
according to the brightness of the ambient light,
but not in the event of poor visibility due to
weather conditions such as fog, snow or spray.
RWith the SmartKey in position 1in the ignition
lock, the parking lamps are switched on or off
automatically depending on the brightness of
the ambient light.
RUSA only: if you have switched on the Day‐time Running Lightsfunction via the on-
board computer, and the engine is running,
the daytime running lamps or the parking
lamps and low-beam headlamps are switched
on or off automatically depending on the
ambient light.
RCanada only: depending on the ambient light,
the daytime running lamps or the parking and
low-beam headlamps are switched on/off
automatically when the engine is running.
XTo switch on the automatic headlamps:
turn the light switch to the Ãposition.
USA only: The daytime running lamps improve
the visibility of your vehicle during the day. Here,
the Daytime Running Lights
function must
be switched on via the on-board computer
(
Ypage 225).
If the engine is running and you turn the light
switch to the TorL position, the manual
settings take precedence over the daytime run-
ning lamps.
Canada only: The daytime running lamps
improve the visibility of your vehicle during the
day. The daytime running lamps function is
required by law in Canada. It cannot therefore
be deactivated.
124Exterior lighting
Lights and windshield wipers 

Control panel in the grab handle (rear
compartment)
Switching on, on the corresponding vehicle side:
XPress button;.
Reading lamp :and the make-up lamp light
up.
Switching off, on the corresponding vehicle
side:
XPress button ;once.
The make-up lamp goes out.
XPress button ;twice.
Reading lamp :goes out.
Switching on, on both vehicle sides:
XPress button =.
The reading lamps :and the make-up lamps
go on.
Switching off, on both vehicle sides:
XPress button =.
Reading lamps :and the make-up lamps go
out.
Interior lighting control
General notes
In order to prevent the vehicle's battery from
discharging, the interior lighting functions are
automatically deactivated after some time
except for when the SmartKey is in position 2in
the ignition lock.
The color, brightness, zone and display light for
the ambient lighting are set using the multime-
dia system; see the Digital Operator's Manual.
The interior lighting control can be operated
using the front overhead control panel.
Automatic interior lighting control
XTo switch on or off: press the|button.
When the automatic interior lighting control is
activated, the button is flush with the over-
head control panel.
The interior lighting automatically switches on if
you:
Runlock the vehicle
Ropen a door
Rremove the SmartKey from the ignition lock
The interior light is activated for a short while
when the SmartKey is removed from the ignition
lock. This delayed switch-off can be adjusted via
the multimedia system (see Digital Operator's
Manual).
Manual interior lighting control
XTo switch the front interior lighting on or off: press the cbutton.
XTo switch the rear compartment interior
lighting on/off: press theubutton.
XTo switch the reading lamp on or off: press
the p button.
Replacing bulbs
The front and rear light clusters of your vehicle
are equipped with LED light bulbs. Do not
replace the LED light sources of your vehicle
yourself. Contact a qualified specialist work-
shop which has the necessary specialist knowl-
edge and tools to carry out the work required.
Lamps are an important aspect of vehicle safety.
You must therefore make sure that these func-
tion correctly at all times. Have the headlamp
setting checked regularly.
Windshield wipers
Switching the windshield wipers
on/off
!
Do not operate the windshield wipers when
the windshield is dry, as this could damage
the wiper blades. Moreover, dust that has col-
lected on the windshield can scratch the glass
if wiping takes place when the windshield is
dry.
128Windshield wipers
Lights and windshield wipers 

If you lock the vehicle centrally using the button
on the front door (Ypage 83), you can continue
to start the engine with the Start/Stop button.
The engine can be switched off while the vehicle
is in motion by pressing and holding the Start/
Stop button for three seconds. This function
operates independently of the ECO start/stop
automatic engine switch-off function.
Key positions with the Start/Stop button
:Start/Stop button
;Ignition lock
As soon as the ignition is switched on, all the
indicator lamps in the instrument cluster light
up. Warning and indicator lamps: see
(
Ypage 258).
If Start/Stop button :has not yet been
pressed, this corresponds to the SmartKey
being removed from the ignition.
XTo switch on the power supply: press
Start/Stop button :once.
The power supply is switched on. You can now activate the windshield wipers, for example.
The power supply is switched off again if:
Rthe driver's door is opened and
Ryou press Start/Stop button :twice when in
this position
XTo switch on the ignition: press Start/Stop
button :twice.
The ignition is switched on.
The ignition is switched off again if:
Ryou do not start the engine within 15 minutes when in this position
Ryou press Start/Stop button :twice when in
this position. The power supply is switched off again if:
Rthe driver's door is opened and
Ryou press Start/Stop button
:twice when in
this position
Removing the Start/Stop button
You can remove the Start/Stop button from the
ignition lock and start the vehicle as normal
using the SmartKey.
It is only possible to switch between Start/Stop button mode and SmartKey operation when the
transmission is in position P.
XRemove Start/Stop button :from ignition
lock ;.
You do not have to remove the Start/Stop but-
ton from the ignition lock when you leave the
vehicle. You should, however, always take the
SmartKey with you when leaving the vehicle. As
long as the SmartKey is in the vehicle:
Rthe vehicle can be started using the Start/
Stop button
Rthe electrically powered equipment can be
operated
Starting the engine
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
146Driving
Driving and parking 

Rthe panic alarm is not activated
Rthe hazard warning lamps are switched off
Rthe hood is closed.
Rthe doors are closed and locked
Rthe windows and sliding sunroof are closed
Also make sure that:
Rthe fuel tank is sufficiently filled
Rthe starter battery is sufficiently charged
GWARNING
Limbs could be crushed or trapped if the
engine is started unintentionally during ser-
vice or maintenance work. There is a risk of
injury.
Always secure the engine against uninten-
tional starting before carrying out mainte-
nance or repair work.
Make sure that the engine cannot be started via
your smartphone before carrying out mainte-
nance or repairs. You can prevent an engine
start via your smartphone, for example, if you:
Rswitch on the hazard warning lamps
Rdo not lock the doors
Ropen the hood
Pulling away
General notes
GWARNING
If the engine speed is above the idling speed
and you engage transmission position Dor R,
the vehicle could pull away suddenly. There is
a risk of an accident.
When engaging transmission position Dor R,
always firmly depress the brake pedal and do not simultaneously accelerate.
Depress the accelerator carefully when pulling
away.
The vehicle locks centrally once you have pulled
away. The locking knobs in the doors drop down.
You can open the doors from the inside at any
time.
You can also deactivate the automatic locking
feature (
Ypage 84). It is only possible to shift the transmission from
position
Pto the desired position if you depress
the brake pedal. Only then is the parking lock
released.
If you do not depress the brake pedal, the
DIRECT SELECT lever can still be moved but the
parking lock remains engaged.
iUpshifts take place at higher engine speeds
after a cold start. This helps the catalytic con-
verter to reach its operating temperature
more quickly.
Information on the automatic release of the
electric parking brake (
Ypage 164).
Hill start assist
Hill start assist helps you when pulling away for-
wards or in reverse on an uphill gradient. It holds
the vehicle for a short time after you have
removed your foot from the brake pedal. This
gives you enough time to move your foot from
the brake pedal to the accelerator pedal and to
depress it before the vehicle begins to roll.
GWARNING
After a short time, hill start assist will no lon-
ger brake your vehicle and it could roll away.
There is a risk of an accident and injury.
Therefore, quickly move your foot from the
brake pedal to the accelerator pedal. Never
leave the vehicle when it is held by hill start
assist.
Hill start assist is not active if:
Ryou are pulling away on a level road or on a
downhill gradient.
Rthe transmission is in position i.
Rthe electric parking brake is applied.
RESP®is malfunctioning.
ECO start/stop function
Introduction
Hybrid vehicles: observe the notes on the ECO
start/stop function in the separate operating
instructions.
The ECO start/stop function switches the
engine off automatically if the vehicle is stopped
under certain conditions.
148Driving
Dr iving an d parking 

Engaging reverse gear R
!Only shift the automatic transmission toR
when the vehicle is stationary.
XIf the transmission is in position Dor N: push
the DIRECT SELECT lever up past the first
point of resistance.
XIf the transmission is in position P: depress
the brake pedal and push the DIRECT SELECT
lever up past the first point of resistance.
The ECO start/stop function is not available
when reverse gear is engaged. Further informa-
tion on the ECO start/stop function
(
Ypage 149).
Shifting to neutral N
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.
XIf the transmission is in position Dor R: push
the DIRECT SELECT lever up or down to the
first point of resistance.
XIf the transmission is in position P: depress
the brake pedal and push the DIRECT SELECT lever up or down to the first point of resist-
ance.
If you switch the engine off with the transmis-
sion in position Ror D, the automatic transmis-
sion shifts to Nautomatically. With the SmartKey:
if you then open the driv-
er's door or the front-passenger door or remove
the SmartKey from the ignition, the automatic
transmission shifts to Pautomatically.
With the Start/Stop button: ifyou t
hen open
the driver's door or the front-passenger door,
the automatic transmission shifts to Pautomat-
ically.
If you want the automatic transmission to
remain in neutral N, e.g. when having the vehicle
cleaned in an automatic car wash with a towing system:
Using the SmartKey:
XSwitch on the ignition.
XDepress the brake pedal and keep it
depressed.
XShift to neutral N.
XRelease the brake pedal.
XRelease the electric parking brake.
XSwitch off the ignition and leave the SmartKey
in the ignition lock.
With the Start/Stop button:
XRemove the Start/Stop button from the igni-
tion lock.
XInsert the SmartKey into the ignition lock.
XSwitch on the ignition.
XDepress the brake pedal and keep it
depressed.
XShift to neutral N.
XRelease the brake pedal.
XRelease the electric parking brake.
XSwitch off the ignition and leave the SmartKey
in the ignition lock.
Engaging drive position D
XIf the transmission is in position Ror N: push
the DIRECT SELECT lever down past the first
point of resistance.
XIf the transmission is in position P: depress
the brake pedal and push the DIRECT SELECT lever down past the first point of resistance.
Automatic transmission153
Driving and parking
Z