they provide an indication of air bag deploy-
ment.
The vehicle can be deformed considerably, with-
out an air bag being deployed. This is the case if
only parts which are relatively easily deformed
are affected and the rate of deceleration is not
high. Conversely, air bags may be deployed eventhough the vehicle suffers only minor deforma-
tion. This is the case if, for example, very rigid
vehicle parts such as longitudinal body mem-
bers are hit, and sufficient deceleration occurs
as a result.
If the restraint system control unit detects a side
impact or if the vehicle rolls over, the applicable
components of the restraint system are
deployed independently of each other depend-
ing on the apparent type of accident.
RSide impact air bags on the side where the
impact takes place, independently of the
Emergency Tensioning Device and the use of
the seat belt on the driver's seat and outer
seats in the second row
The side impact air bag on the front-
passenger side deploys under the following
conditions:
-the OCS system detects that the front-
passenger seat is occupied or
-the seat belt buckle tongue is engaged in
the belt buckle of the front-passenger seat
RWindow curtain air bag on the side of impact, independently of the use of the seat belt and
independently of whether the front-
passenger seat is occupied
REmergency Tensioning Devices, if the system
determines that deployment can offer addi-
tional protection in this situation
RWindow curtain air bags on the driver's and
front-passenger side in certain situations
when the vehicle rolls over, if the system
determines that deployment can offer addi-
tional protection to that provided by the seat
belt
iNot all air bags are deployed in an accident.
The different air bag systems work independ- ently of each other.
How the air bag system works is determined
by the severity of the accident detected,
especially the vehicle deceleration or accel-
eration and the apparent type of accident:
RFrontal collision
RSide impact
RRollover
PRE-SAFE®(anticipatory occupant
protection system)
Introduction
In certain hazardous situations, PRE-SAFE®
takes pre-emptive measures to protect the vehi-
cle occupants.
Important safety notes
!Make sure that there are no objects in the
footwell or behind the seats. There is a danger that the seats and/or objects could be dam-
aged when PRE-SAFE
®is activated.
Although your vehicle is equipped with PRE-
SAFE
®, the possibility of injury in the event of an
accident cannot be ruled out. Always adapt your
driving style to suit the prevailing road and
weather conditions and maintain a safe distance
from the vehicle in front. Drive carefully.
Function
PRE-SAFE®intervenes:
Rin emergency braking situations, e.g. when
BAS is activated
Rin critical driving situations, e.g. when physi-
cal limits are exceeded and the vehicle under-
steers or oversteers severely
Ron vehicles with the Driving Assistance PLUS
package: when Active Brake Assist intervenes
powerfully or the radar sensor system detects
an imminent danger of collision in certain sit- uations
PRE-SAFE
®takes the following measures
depending on the hazardous situation detected:
Rthe front seat belts are pre-tensioned.
Rif the vehicle skids, the side windows and the sliding sunroof are closed.
Rvehicles with the memory function: the front-
passenger seat is adjusted if it is in an unfav-
orable position.
Rvehicles with a multicontour seat: the air pres-
sure in the side bolsters of the seat backrest
is increased.
If the hazardous situation passes without result-
ing in an accident, PRE-SAFE
®slackens the belt
pre-tensioning. On vehicles with multicontour
seats, the air pressure in the side bolsters is
reduced again. All settings made by PRE-SAFE
®
can then be reversed.
58Occupant safety
Safety
If the seat belt pre-tensioning is not reduced:
XMove 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" (
Ypage 48).
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 with assistance from Parking Pilot,
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:
Rif the radar sensor system detects that a
head-on collision is imminent, the seat belts
are pre-tensioned.
Rif 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:
Rif the accelerator pedal is depressed when a
gear is engaged
Rif the risk of a collision passes or is no longer
detected
Rif Distance Pilot DISTRONIC indicates an
intention to pull away
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:
Rthe hazard warning lamps are activated
Rthe emergency lighting is activated
Rthe vehicle doors are unlocked
Rthe front side windows are lowered
Rvehicles with a memory function: the electri-
cally adjustable steering wheel is raised when
the driver's door is opened
Rthe engine is switched off and the fuel supply
is cut off
Rvehicles with mbrace: automatic 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 vehicle59
Safety
Z
Correct driver's seat position
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.
Observe the following when adjusting steering
wheel :, seat belt ;and driver's seat =:
Ryou are as far away from the driver's air bag as
possible
Ryou are sitting in a normal upright position
Ryour thighs are slightly supported by the seat
cushion
Ryour legs are not entirely stretched and you
can depress the pedals properly
Rthe back of your head is supported at eye level
by the center of the head restraint
Ryou can hold the steering wheel with your
arms slightly bent
Ryou can move your legs freely
Ryou can see all the displays in the instrument
cluster clearly
Ryou should have a good overview of traffic
conditions
Rthe 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:
RElectrical seat adjustment (Ypage 98)
RAdjusting the steering wheel mechanically
(Ypage 103) or electrically (Ypage 104)
RFastening the seat belt correctly (Ypage 48).
RAdjusting the rear-view mirror and exterior
mirrors (Ypage 105).
RVehicles with memory function: storing the
seat, steering wheel, exterior mirror and
Head-up display settings with the memory
function (
Ypage 108)
Seats
Important safety notes
GWARNING
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. Never
leave children unsupervised in the vehicle.
The seats can still be adjusted when there is no
SmartKey in the ignition lock.
GWARNING
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.
Make sure when adjusting a seat that no one
has any body parts in the sweep of the seat.
Observe the safety notes on "Air bags"
(
Ypage 49) and "Children in the Vehicle"
(Ypage 59).
Seats97
Seats, steering wheel and mirrors
Z
?Seat fore-and-aft adjustment
ABackrest angle
iVehicles 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.
iVehicles 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
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
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 rotate 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 (
Ypage 97).
Adjusting the head restraints manually
Adjusting the head restraint height
XTo raise: pull the head restraint up to the
desired position.
XTo lower: press release catch :in the direc-
tion of the arrow and push the head restraint
down to the desired position.
Adjusting the fore/aft position of the
head restraint
With this function you can adjust the distance
between the head restraint and the back of the
seat occupant's head.
XTo move forwards: pull the head restraint
forwards in the direction of the arrow until it
engages.
There are several notches.
XTo move backwards: press and hold release
button :and push the head restraint back-
wards.
XWhen the head restraint is in the desired posi-
tion, release the button and make sure that
the head restraint is engaged in position.
iAdjust the head restraint so that the back of
your head is as close to the head restraint as
possible.
Seats99
Seats, steering wheel and mirrors
Z
Adjusting the steering wheel electri-
cally
:Adjusts th esteering whee lheight
;Adjusts th esteering whee lposition (fore-
and-af tadjustment)
The steering whee lcan also be adjusted when
th eSmartKey is remove dfrom th eignition lock.
iFurther relate dsubjects :
REASY-ENTRY/EXIT feature (Ypage 104)
RStoring settings (Ypage 108)
Steering wheel heating
Switching on/off
XTurn th eSmartKey to position 2in th eigni-
tion loc k (Ypage 135).
XTo switch on/off: turnth elever in th edirec -
tion of arrow :or;.
Indicato rlamp =lights up or goes out .
Vehicles wit hKEYLESS-GO :when you switch off
th eignition and open th edriver's door ,th e
steering whee lheating is deactivated.
Vehicles without KEYLESS-GO :when you
remove th eSmartKey from th eignition lock, th e
steering whee lheating is deactivated.
Problems with the steering wheel heating
ProblemPossible causes/consequences and MSolutions
The steering wheelheat -
ing has switched off pre -
maturel yor canno tbe
switched on .The on-board voltag eis to olow because to oman yelectrical consum-
ers are switched on .
XSwitchoff electrical consumer sthat you do no tneed, suc has th e
rear window defroste ror interior lighting .
EASY-ENTRY/EXITfeatu re
Import ant safety notes
GWARNIN G
When th eEASY-ENTRY/EXIT feature adjust s
th esteering wheel, you and other vehicl e
occupant s –particularly children –could
become trapped .There is aris kof injury.
Whil eth eEASY-ENTRY/EXIT feature is mak -
ing adjustments ,mak esur ethat no on ehas
any body part sin th eswee pof th esteering
wheel.
Mov eth esteering whee ladjustmen tlever if
there is aris kof entrapment by th esteering
wheel. The adjustmen tprocess is stopped.
Press on eof th ememory function position but -
tons .This function is only available on vehicles
wit hmemory function .
GWARNING
If children activat eth eEASY-ENTRY/EXIT fea-
ture, they can become trapped ,particularly
when unattended. There is aris kof injury.
104Steering wheel
Seats, steering wheel and mirrors
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 in the on-board computer
(
Ypage 239).
Position of the steering wheel when the
EASY-ENTRY/EXIT feature is active
The steering wheel swings up when you:
Rremove the SmartKey from the ignition lock.
Ropen the driver's door and KEYLESS-GO is in
position 1.
Ropen the driver's door and the SmartKey is in
positionuor1 in the ignition lock.
iThe 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:
Rthe driver's door is closed
Ryou insert the SmartKey into the ignition lock
or
Ryou 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:
Rswitch the ignition off
Rsave the setting with the memory function
(Ypage 108).
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.
This occurs irrespective of the position of the
SmartKey in the ignition lock. This makes it eas- ier 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 on-board computer
(
Ypage 239).
Mirrors
Rear-view mirror
XAnti-glare mode: flick anti-glare lever :for-
wards or back.
Exterior mirrors
Adjusting the exterior mirrors
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.
Mirrors105
Seats, steering wheel and mirrors
Z
Exterior mirror pushed out of position
If an exterior mirror has been pushed out of
position, proceed as follows:
XVehicles without electrically folding exte-
rior mirrors:move the exterior mirror into
the correct position manually.
XVehicles with electrically folding exterior
mirrors: press and hold mirror-folding but-
ton :until you hear a click and the mirror
engages in position audibly.
The mirror housing is engaged again and you
can adjust the exterior mirrors as usual
(
Ypage 105).
Automatic anti-glare mirrors
GWARNING
Electrolyte may escape if the glass in an auto-
matic anti-glare mirror breaks. The electrolyte
is harmful and causes irritation. It must not
come into contact with your skin, eyes, res-
piratory organs or clothing or be swallowed.
There is a risk of injury.
If you come into contact with the electrolyte,
observe the following:
RRinse off the electrolyte from your skin
immediately with water.
RImmediately rinse the electrolyte out of
your eyes thoroughly with clean water.
RIf the electrolyte is swallowed, immediately
rinse your mouth out thoroughly. Do not
induce vomiting.
RIf electrolyte comes into contact with your
skin or hair or is swallowed, seek medical
attention immediately.
RImmediately change out of clothing which
has come into contact with electrolyte.
RIf an allergic reaction occurs, seek medical
attention immediately. 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:
Rthe ignition is switched on and
Rincident 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
:Button for the driver's side exterior mirror
;Button for the front-passenger side exterior
mirror
=Adjustment button
?Memory button M
XBring the vehicle to a standstill.
XTurn the SmartKey to position 2in the igni-
tion lock (Ypage 135).
XPress button ;.
Mirrors107
Seats, steering wheel and mirrors
Z
XEngage reverse gear.
The exterior mirror on the front-passenger
side moves to the default setting parking posi-
tion.
XUse button=to adjust the exterior mirror to
a position that allows you to see the rear
wheel and the curb.
The parking position is stored.
iIf 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 M?. The reverse gear must not
be engaged during the process.
XTurn the SmartKey to position 2in the igni-
tion lock (Ypage 135).
XPress button ;.
XUse button=to adjust the exterior mirror to
a position that allows you to see the rear
wheel and the curb.
XPress memory button M? and one of the
arrows on button =within three seconds.
The parking position is stored if the exterior
mirror does not move.
XIf the mirror moves out of position, repeat the
steps.
Calling up a stored parking position set-
ting
XTurn the SmartKey to position 2in the igni-
tion lock (Ypage 135).
XAdjust the exterior mirror on the front-
passenger side using button ;.
XEngage 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:
Ras soon as you exceed a speed of 9 mph
(15 km/h)
Rif you press button :for the exterior mirror
on the driver's side
Memory function
Storing settings
GWARNING
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.
GWARNING
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.
GWARNING
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:
Rposition of the seat, backrest and head
restraint
Rdriver's side: steering wheel position
Rdriver's side: position of the exterior mirrors
on the driver's and front-passenger sides
108Memory function
Seats, steering wheel and mirrors