Seat beltsAdjusting the driver's and front-
passenger seat belt .........................4 8
Adjusting the height ......................... 48
Cleaning ......................................... 332
Correct usage .................................. 47
Fastening ......................................... 48
Important safety guidelines ............. 46
Introduction .....................................4 5
Releasin g ......................................... 48
Switching belt adjustment on/off
(on-board computer) ...................... 239
Warning lamp ................................. 274
Warning lamp (function) ................... 48
Seats
Adjusting (electrically) ..................... 98
Adjusting the 4-way lumbar sup-
port ................................................ 101
Adjusting the head restraint ............ 99
Calling up a stored setting (mem-
ory function) .................................. 109
Cleaning the cover ......................... 332
Folding the rear bench seat for-
wards/back ................................... 298
Important safety notes .................... 97
Overview .......................................... 97
Seat heating problem .................... 103
Seat ventilation problem ................ 103
Storing settings (memory func-
tion) ............................................... 108
Switching seat heating on/off ....... 101
Switching seat ventilation on/off .. 102
Section
Sliding sunroof ................................. 92
Securing hooks .................................. 300
Selector lever
Cleaning ......................................... 332
Sensors (cleaning instructions) ....... 330
Service menu (on-board com-
puter) .................................................. 237
Service message
see ASSYST PLUS
Service products
Brake fluid ..................................... 388
Coolant (engine) ............................ 388
DEF special additives ..................... 386
Engine oil ....................................... 387
Fuel ................................................ 384 Important safety notes .................. 383
Refrigerant (air-conditioning sys-
tem) ............................................... 389
Washer fluid ................................... 389
Setting the air distribution ............... 129
Setting the airflow ............................ 129
Setting the date
/time format
see also Digital Operator's Man-
ual .................................................. 287
Setting the language
see also Digital Operator's Man-
ual .................................................. 287
Setting the time
see also Digital Operator's Man-
ual .................................................. 287
Settings
Factory (on-board computer) ......... 240
On-board computer ....................... 238
SETUP (on-board computer,
Mercedes-AMG vehicles) .................. 241
Side impact air bag ............................. 51
Side marker lamp (display mes-
sage) ................................................... 255
Side windows
Cleaning ......................................... 329
Convenience closing feature ............ 90
Convenience opening feature .......... 89
Important safety information ........... 88
Opening/closing .............................. 89
Overview .......................................... 88
Problem (malfunction) ..................... 91
Resetting ......................................... 91
Reversing feature ............................. 89
SIRIUS services
see also Digital Operator's Man-
ual .................................................. 287
Sliding sunroof
Important safety notes .................... 92
Opening/closing .............................. 93
Problem (malfunction) ..................... 95
Resetting ......................................... 93
see Panorama roof with power
tilt/sliding panel
SmartKey
Changing the battery ....................... 80
Changing the programming ............. 79
Checking the battery ....................... 80
Index19
Fastening and adjusting the seat belts
Observeth esafet ynote son th eseat belt
(Ypage 46) and th enote son correct use of seat
belt s (Ypage 47) .
Basic illustration
XAdjustth eseat (Ypage 97).
The seat backrest must be in an almost
upright position .
XPull theseat belt smoothly from th ebelt outlet
and engage belt tongue ;intobelt
buckle :.
The seat belt on th edriver’s seat and th e
front-passenger seat may be tightened auto -
matically, see "Belt adjustment"
(
Ypage 48).
XIf necessary, pull up on th eshoulder section
of th eseat belt to tighten th ebelt across your
body.
The shoulder section of th eseat belt must
always be routed across th ecente rof th eshoul-
der .Adjus tth ebelt outlet if necessary.
XTo raise: slide thebelt outlet up.
The belt outlet will engage in various posi-
tions.
XTo lower :hold belt outlet release =and slide
th ebelt outlet down .
XLet go of belt outlet release =in th edesired
position and mak esure that th ebelt outlet
engages.
All seat belt sexcep tth edriver' sseat belt are
equipped wit h aspecial seat belt retracto rto
securel yfaste nchild restrain tsystems in th e
vehicle. Further information can be foun dunder
"Special seat belt retractor" (
Ypage 60).
Releasing seat belts
!Makesure that th eseat belt is fully rolled up.
Otherwise, th eseat belt or belt tongue will be
trapped in th edoor or in th eseat mechanism .
This could damag eth edoor ,th edoor trim
panel and th eseat belt .Damaged seat belt s
can no longer fulfill their protective function
and must be replaced. Visit aqualified spe-
cialist workshop.
XPress th erelease butto nin th ebelt buckle,
hold th ebelt tongue firmly and guide th ebelt
back.
Seat belt adjustment
The belt adjustmen tis aconvenience function
integrate dint oPRE-SAF E®.Wit hthis function ,
th edriver' sand front-passenger seat belt sare
adjusted to th eupper body of th evehicl eoccu-
pant.
The seat belt strap will slightly tighten if:
Rth ebelt tongue is inserted int oth ebuckle and
Rth eignition is switched on
The seat belt adjustmen twill apply acertai n
tightening force if any slac kis detected between
th evehicl eoccupant and th eseat belt .Do no t
grab hold of th eseat belt .
The belt adjustmen tcan be switched on and off
usin gth eon-board computer (
Ypage 239).
Belt warning for the driver and front
passenger
The7 seat belt warning lamp in th einstru-
men tcluste ris areminder that all vehicl eoccu-
pants must wear their seat belts. It may ligh tup
continuously or flash. In addition ,there may be
a warning tone .
Regardles sof whether th edriver' sseat belt has
already been fastened, th e7 seat belt warn -
ing lamp lights up for six seconds eac htime th e
engin eis started. If th efron tdoor sare closed
and th edriver' sor front-passenger seat belt has
no tbeen fastened, th e7 seat belt warning
lamp lights up again after th esix seconds. As
soo nas th edriver' sand front-passenger seat
belt sare fastene dor afron tdoor is opened
again ,th e7 seat belt warning lamp goes out .
If th edriver' sseat belt is no tfastene dafter th e
engin eis started, an additional warning tone will
sound. The warning tone switches off after six
48Occupant 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
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 you adjust the seat height carelessly, you or
other vehicle occupants could be trapped and
thereby injured. Children in particular could
accidentally press the electrical seat adjust-
ment buttons and become trapped. There is a
risk of injury.
While moving the seats, make sure that your
hands or other body parts do not get under the
lever assembly of the seat adjustment sys-
tem.
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.
GWARNING
The seat belt does not offer the intended level of protection if you have not moved the back-
rest to an almost vertical position. When brak-
ing or in the event of an accident, you could
slide underneath the seat belt and sustain
abdomen or neck injuries, for example. This
poses an increased risk of injury or even fatal injury.
Adjust the seat properly before beginning
your journey. Always ensure that the backrest
is in an almost vertical position and that the
shoulder section of your seat belt is routed
across the center of your shoulder.
!To avoid damage to the seats and the seat
heating, observe the following information:
Rkeep liquids from spilling on the seats. If
liquid is spilled on the seats, dry them as
soon as possible.
Rif the seat covers are damp or wet, do not
switch on the seat heating. The seat heat-
ing should also not be used to dry the seats.
Rclean the seat covers as recommended;
see "Interior care".
Rdo not transport heavy loads on the seats.
Do not place sharp objects on the seat
cushions, e.g. knives, nails or tools. The
seats should only be occupied by passen-
gers, if possible.
Rwhen the seat heating is in operation, do
not cover the seats with insulating materi-
als, e.g. blankets, coats, bags, seat covers,
child seats or booster seats.
!Make sure that there are no objects in the
footwell under or behind the seats when mov-
ing the seats back. There is a risk that the
seats and/or the objects could be damaged.
iFurther related subjects:
RCargo compartment enlargement (folding
down the rear bench seat) (Ypage 298)
Adjusting the seats electrically
:Head restraint height
;Seat cushion angle
=Seat height
98Seats
Seats, steering wheel and mirrors
?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
Problems with the seat heating or seat ventilation
ProblemPossible causes/consequences andMSolutions
The seat heating or seat
ventilation has switched
off prematurely or can-
not 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.
Once the battery is sufficiently charged, the seat heating or seat
ventilation will switch back on automatically.
Steering wheel
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
Children could injure themselves if they
adjust the steering wheel. 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 electrically adjustable steering wheel can
still be adjusted when there is no SmartKey in
the ignition lock.
Adjusting the steering wheel man-
ually
GWARNING
If the steering wheel is unlocked while the
vehicle is in motion, it could change position
unexpectedly. This could cause you to lose
control of the vehicle. There is a risk of an
accident.
Before starting off, make sure the steering
wheel is locked. Never unlock the steering
wheel while the vehicle is in motion.
:Release lever
;Adjusts the steering wheel height
=Adjusts the steering wheel position (fore-
and-aft adjustment)
XPush release lever :down completely.
The steering column is unlocked.
XAdjust the steering wheel to the desired posi-
tion.
XPush release lever :up completely.
The steering column is locked.
XCheck if the steering column is locked. When
doing so, try to push the steering wheel up or down or try to move it in the fore-and-aft
direction.
Steering wheel103
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