If the seat belt pre-tensioning is not reduced:
X Move the seat backrest or seat back slightly
when the vehicle is stationary.
The seat belt pre-tensioning is reduced and
the locking mechanism is released.
The seat-belt adjustment is an integral part of
the PRE-SAFE ®
convenience function. Informa-
tion about the convenience function can be
found under "Belt adjustment" (Y page 46).PRE-SAFE
®
PLUS (anticipatory occu-
pant protection system PLUS)
Introduction PRE-SAFE
®
PLUS is only available in vehicles
with the Driving Assistance PLUS package.
Using the radar sensor system, PRE-SAFE ®
PLUS is able to detect that a head-on or rear-end
collision is imminent. In certain hazardous sit-
uations, PRE-SAFE ®
PLUS takes pre-emptive
measures to protect the vehicle occupants.
Important safety notes The intervention of PRE-SAFE
®
PLUS cannot
prevent an imminent collision.
The driver is not warned about the intervention
of PRE-SAFE ®
PLUS.
PRE-SAFE ®
PLUS does not intervene if the vehi-
cle is backing up.
When driving, or when parking or exiting a park-
ing space using Active Parking Assist, PRE-
SAFE ®
PLUS will not apply the brakes.
Function PRE-SAFE
®
PLUS intervenes in certain situa-
tions if the radar sensor system detects an
imminent head-on or rear-end collision. PRE-SAFE
®
PLUS takes the following measures
depending on the hazardous situation detected:
R if the radar sensor system detects that a
head-on collision is imminent, the seat belts
are pre-tensioned.
R if the radar sensor system detects that a rear-
end collision is imminent:
- the brake pressure is increased if the driver
applies the brakes when the vehicle is sta- tionary.
- the seat belts are pre-tensioned.
The PRE-SAFE ®
PLUS braking application is can-
celed:
R if the accelerator pedal is depressed when a
gear is engaged
R if the risk of a collision passes or is no longer
detected
R if Active Distance Assist DISTRONIC indicates
an intention to intervene
If the hazardous situation passes without result- ing in an accident, the original settings are
restored. Automatic measures after an acci-
dent
Immediately after an accident, the following
measures are implemented, depending on the
type and severity of the impact:
R the hazard warning lamps are switched on
R the emergency lighting is activated
R the vehicle doors are unlocked
R the front side windows are lowered
R vehicles with a memory function: the electri-
cally adjustable steering wheel is raised when
the driver's door is opened
R the engine is switched off and the fuel supply
is cut off
R vehicles with Mercedes me connect: auto-
matic emergency call Children in the vehicle
Important safety notes
Accident statistics show that children secured
in the rear seats are safer than children secured
in the front-passenger seat. For this reason,
Mercedes-Benz strongly advises that you install Children in the vehicle
57Safety Z
Correct driver's seat position
G
WARNING
You could lose control of your vehicle if you do the following while driving:
R adjust the driver's seat, head restraint,
steering wheel or mirrors
R fasten 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. Observe the following when adjusting steering
wheel
0043, seat belt 0044and driver's seat 0087:
R you are as far away from the driver's air bag as
possible
R you are sitting in a normal upright position
R your thighs are slightly supported by the seat
cushion
R your legs are not entirely stretched and you
can depress the pedals properly
R the back of your head is supported at eye level
by the center of the head restraint
R you can hold the steering wheel with your
arms slightly bent
R you can move your legs freely
R you can see all the displays in the instrument
cluster clearly R
you should have a good overview of traffic
conditions
R the seat belt is pulled snugly against the body
and is routed across the center of your shoul-
der and across your hips in the pelvic area
Further related subjects:
R Electrical seat adjustment (Y page 95)
R Adjusting the steering wheel mechanically
(Y page 99) or electrically (Y page 100)
R Fastening the seat belt correctly (Y page 46).
R Adjusting the rear-view mirror and exterior
mirrors (Y page 102).
R Vehicles with memory function: storing the
seat, steering wheel, exterior mirror and
Head-up display settings with the memory
function (Y page 105) Seats
Important safety notes
G
WARNING
Children could become trapped if they adjust the seats, particularly when unattended.
There is a risk of injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Neverleave children unsupervised in the vehicle.
The seats can still be adjusted when there is no
SmartKey in the ignition lock. G
WARNING
When you adjust a seat, you or other vehicle
occupants could become trapped, e.g. on the seat guide rail. There is a risk of injury.
When adjusting a seat, make sure that no one
has any body parts in the sweep of the seat.
Observe the safety notes on "Air bags"
(Y page 47) and "Children in the Vehicle"
(Y page 57). 94
SeatsSeats, steering wheel and
mirrors
0085
Seat fore-and-aft adjustment
0083 Backrest angle
i Vehicles with memory function: if PRE-
SAFE ®
has been triggered, the front-
passenger seat will be moved to a better posi- tion if it was previously in an unfavorable posi-
tion.
i Vehicles with memory function: when the
seat is moved forwards or backwards, the
headrest is moved up or down automatically. Adjusting the head restraints
Important safety notes G
WARNING
You could lose control of your vehicle if you do the following while driving:
R adjust the driver's seat, head restraint,
steering wheel or mirrors
R fasten 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. G
WARNING
If the head restraints are not installed or not
adjusted correctly, they cannot provide pro-
tection as intended. There is an increased risk
of injury in the head and neck area, e.g. in the event of an accident or when braking.
Always drive with the head restraints instal-
led. Before driving off, make sure for every
vehicle occupant that the center of the head
restraint supports the back of the head at
about eye level.
Do not swap the head restraints of the front and
rear seats. Otherwise, you cannot adjust the
height and angle of the head restraints to the
correct position.
Using the fore-and-aft adjustment, adjust the
head restraint so that it is as close as possible to your head.
Observe the important safety notes regarding
the seats (Y page 94). Adjusting the front head restraints fore-
and-aft position With this function you can adjust the distance
between the head restraint and the back of the
seat occupant's head.
X To move forwards: pull the head restraint
forwards in the direction of the arrow until it
engages.
There are several notches.
X To move backwards: press and hold release
button 0043and push the head restraint back-
wards.
X When the head restraint is in the desired posi-
tion, release the button and make sure that
the head restraint is engaged in position.
i Adjust the head restraint so that the back of
your head is as close to the head restraint as possible.
Adjusting the height of the head
restraints electrically X
To adjust the head restraint height: slide
the switch for head restraint adjustment
(Y page 95) up or down in the direction of the
arrow. 96
SeatsSeats, steering wheel and mirrors
Problems with the steering wheel heating
Problem
Possible causes/consequences and
0050
0050Solutions 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.
X Switch off electrical consumers that you do not need, such as the
rear window defroster or interior lighting. EASY-ENTRY/EXIT feature
Important safety notes G
WARNING
When the EASY-ENTRY/EXIT feature adjusts
the steering wheel, 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 steering
wheel.
Move the steering wheel adjustment lever if
there is a risk of entrapment by the steering
wheel. The adjustment process is stopped.
Press one of the memory function position but-
tons. This function is only available on vehicles
with memory function. G
WARNING
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. G
WARNING
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 in the on-board computer
(Y page 219).
Position of the steering wheel when the EASY-ENTRY/EXIT feature is active The steering wheel swings up when you:
R remove the SmartKey from the ignition lock.
R open the driver's door and KEYLESS-GO is in
position 0047.
R open the driver's door and the SmartKey is in
position 0092or0047 in the ignition lock.
i The steering wheel only moves up if it has
not already reached the upper stop.
Position of the steering wheel for driv-
ing The steering wheel is moved to the last selected
position when:
R the driver's door is closed
R you insert the SmartKey into the ignition lock
or
R you press the Start/Stop button once on vehi-
cles with KEYLESS-GO
When you close the driver's door with the igni-
tion switched on, the steering wheel is also
automatically moved to the previously set posi- tion.
The last position of the steering column is stored
when you:
R switch the ignition off
R save the setting with the memory function
(Y page 105).
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. Steering wheel
101Seats, steering wheel and mirrors Z
The rear-view mirror and the exterior mirror on
the driver's side automatically go into anti-glare
mode if the following conditions are met simul-
taneously:
R the ignition is switched on and
R incident light from headlamps strikes the sen-
sor in the rear-view mirror
The mirrors do not go into anti-glare mode if
reverse gear is engaged or if the interior lighting
is switched on. Parking position for the exterior mir-
ror on the front-passenger side
Setting and storing the parking position You can position the front-passenger side exte-
rior mirror in such a way that you can see the
rear wheel on that side as soon as you engage
reverse gear. You can store this position.
Using reverse gear 0043
Button for the driver's side exterior mirror
0044 Button for the front-passenger side exterior
mirror
0087 Switch
0085 Memory button M
X Bring the vehicle to a standstill.
X Turn the SmartKey to position 0048in the igni-
tion lock (Y page 127).
X Press button 0044. X
Engage reverse gear.
The exterior mirror on the front-passenger
side moves to the default setting parking posi-
tion.
X Use button 0087to adjust the exterior mirror to
a position that allows you to see the rear
wheel and the curb.
The parking position is stored.
i If you shift the transmission to another posi-
tion, the exterior mirror on the front-
passenger side returns to the driving position.
Using the memory button You can store the parking position of the exte-
rior mirror on the front-passenger side using
memory button
M0085. The reverse gear must not
be engaged during the process.
X Turn the SmartKey to position 0048in the igni-
tion lock (Y page 127).
X Press button 0044.
X Use button 0087to adjust the exterior mirror to
a position that allows you to see the rear
wheel and the curb.
X Press memory button M0085 and one of the
arrows on button 0087within three seconds.
The parking position is stored if the exterior
mirror does not move.
X If the mirror moves out of position, repeat the
steps.
Calling up a stored parking position set- ting X
Turn the SmartKey to position 0048in the igni-
tion lock (Y page 127).
X Adjust the exterior mirror on the front-
passenger side using button 0044.
X Engage reverse gear.
The exterior mirror on the front-passenger
side moves to the stored parking position.
The exterior mirror on the front-passenger side
moves back to its original position:
R as soon as you exceed a speed of 9 mph
(15 km/h)
R when you use button 0043to select the exterior
mirror on the driver's side 104
MirrorsSeats, steering wheel and mirrors
Memory function
Storing settings
G
WARNING
If you use the memory function on the driver's side while driving, you could lose control of
the vehicle as a result of the adjustments
being made. There is a risk of an accident.
Only use the memory function on the driver's
side when the vehicle is stationary. G
WARNING
When the memory function adjusts the seat or steering wheel, you and other vehicle occu-
pants – particularly children – could become
trapped. There is a risk of injury.
While the memory function is making adjust-
ments, make sure that no one has any body
parts in the sweep of the seat or steering
wheel. If somebody becomes trapped, imme-
diately release the memory function position
button. The adjustment process is stopped. G
WARNING
Children could become trapped if they acti-
vate the memory function, 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.
The memory function can be used at any time,
e.g. even when the SmartKey isn't in the ignition
lock.
With the memory function, you can store up to
three different settings, e.g. for three different
people.
The following settings are stored as a single
memory preset:
R position of the seat, backrest and head
restraint
R driver's side: steering wheel position
R driver's side: position of the exterior mirrors
on the driver's and front-passenger sides X
Adjust the seat (Y page 95).
X On the driver's side, adjust the steering wheel
(Y page 100) and the exterior mirrors
(Y page 102).
X Press memory button Mand then press mem-
ory position button 1,2or 3within three sec-
onds.
The settings are stored in the selected preset position. A tone sounds when the settings
have been completed.
The memory function can still be used if the
SmartKey has been removed. Calling up a stored setting
X Press and hold the relevant storage position
button 1,2or 3until the seat, steering wheel
and exterior mirrors are in the stored position.
The setting procedure is interrupted as soon as you release the storage position buttons. Memory function
105Seats, steering wheel and mirrors Z
Vehicle submenu
Activating/deactivating the automatic
door locking mechanism
If you activate the Automatic
Automatic Door
DoorLock
Lockfunc-
tion, the vehicle is centrally locked above a
speed of approximately 9 mph (15 km/h).
X Press the 0059or0065 button on the steering
wheel to select the Sett.
Sett.menu.
X Press the 0064or0063 button to select the
Vehicle
Vehicle submenu.
X Press 0076to confirm.
X Press the 0064or0063 button to select the
Automatic Door Lock
Automatic Door Lock function.
When the Automatic Door Lock
Automatic Door Lock function is
activated, the vehicle doors are displayed in
orange in the multifunction display.
X Press the 0076button to save the setting.
For further information on the automatic locking
feature, see (Y page 81).
Activating/deactivating the acoustic
locking verification signal
If you switch on the Acoustic
AcousticLock
Lock function, an
acoustic signal sounds when you lock the vehi-
cle.
X Press the 0059or0065 button on the steering
wheel to select the Settings
Settings menu.
X Press the 0064or0063 button to select the
Vehicle
Vehicle submenu.
X Press 0076to confirm.
X Press the 0064or0063 button to select the
Acoustic Lock Acoustic Lock function.
If the Acoustic Lock
Acoustic Lock function is activated,
the 0037 symbol in the multifunction display
lights up orange.
X Press the 0076button to save the setting.
Convenience submenu Activating/deactivating the EASY-
ENTRY/EXIT feature G
WARNING
When the EASY-ENTRY/EXIT feature adjusts
the steering wheel, 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 steering
wheel.
If somebody becomes trapped:
R press one of the memory function position
buttons, or
R move the switch for steering wheel adjust-
ment in the opposite direction to that in
which the steering wheel is moving.
The adjustment process is stopped.
X Press the 0059or0065 button on the steering
wheel to select the Sett.
Sett. menu.
X Press the 0064or0063 button to select the
Convenience Convenience submenu.
X Press 0076to confirm.
X Using 0064or0063, select the Easy
EasyEntry/
Entry/
Exit
Exit function.
If the Easy
Easy Entry/Exit
Entry/Exit function is activated,
the vehicle steering wheel is displayed in
orange in the multifunction display.
X Press the 0076button to save the setting.
Further information on the EASY-ENTRY/EXIT
feature (Y page 101).
Switching the seat belt adjustment on/off X Press the 0059or0065 button on the steering
wheel to select the Settings Settingsmenu.
X Press the 0064or0063 button to select the
Convenience
Convenience submenu.
X Press 0076to confirm.
X Press the 0064or0063 button to select the
Belt Adjustment
Belt Adjustment function.
If the Belt
Belt Adjustment
Adjustment function is activated,
the vehicle seat belt is shown in orange in the multifunction display.
X Press the 0076button to save the setting.
For further information on belt adjustment, see
(Y page 46).
Switching the fold-in mirrors when lock-
ing feature on/off
This function is only available when the vehicle is
equipped with the electrical fold-in function.
When you activate the Auto. Auto.Mirror
Mirror Folding
Folding
function, the exterior mirrors are folded in when the vehicle is locked. The exterior mirrors fold
out automatically again as soon as you unlock
the vehicle. Menus and submenus
219On-board computer and displays Z
Opening/closing the garage door
After it has been programmed, the integrated
garage door opener performs the function of the
garage door system remote control. Please also
read the operating instructions for the garage
door system.
X Turn the SmartKey to position 0048in the igni-
tion lock (Y page 127).
X Press either button 0044,0087or0085 which you
have programmed to operate the garage
door.
Garage door system with a fixed code: indi-
cator lamp 0043lights up green.
Garage door system with a rolling code: indi-
cator lamp 0043flashes green.
The transmitter will transmit a signal as long
as the button is pressed. The transmission is
halted after a maximum of ten seconds and
indicator lamp 0043lights up yellow.
X Press button 0044,0087or0085 again if necessary.
Clearing the memory Make sure that you clear the memory of the
integrated garage door opener before selling the vehicle. X
Turn the SmartKey to position 0048in the igni-
tion lock (Y page 127).
X Press and hold buttons 0044and 0085.
Indicator lamp 0043initially lights up yellow and
then green.
X Release buttons 0044and 0085.
The memory of the integrated garage door
opener in the rear-view mirror is cleared. Floormats
G
WARNING
Objects in the driver's footwell can restrict the pedal travel or obstruct a depressed pedal.
The operating and road safety of the vehicle is
jeopardized. There is a risk of an accident.
Make sure that all objects in the vehicle are
stowed correctly, and that they cannot enter
the driver's footwell. Install the floormats
securely and as specified in order to ensure
sufficient clearance for the pedals. Do not use loose floormats and do not place floormats on
top of one another. X
Driver's seat/front-passenger seat: slide
the respective seat back.
X Rear seats: slide the corresponding front
seat forwards.
X To install: place the floormat in the footwell.
X Press studs 0043onto retainers 0044.
X To remove: pull the floormat from retain-
ers 0044.
X Remove the floormat. Features
295Stowage and features Z