Useful information
i
This Operator's Manual describes all
models and all standard and optional equip-
ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
iRead the information on qualified special-
ist workshops (
Ypage 27).
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.
XObserve the safety guidelines on seat
adjustment (
Ypage 109).
XMake sure that seat =is adjusted prop-
erly.
Electrical seat adjustment (
Ypage 110)
When adjusting the seat, make sure that:
Ryou are as far away from the driver's air bag
as possible
Ryou are sitting in a normal upright position
Ryou can fasten the seat belt properly
Ryou have moved the backrest to an almost
vertical position
Ryou have set the seat cushion angle so that
your thighs are gently supported
Ryou can depress the pedals properly
Ryour legs are not fully extended
XCheck whether the head restraint is adjus-
ted properly.
When doing so, make sure that you have
adjusted the head restraint so that the back
of your head is supported at eye level by the
center of the head restraint.
XObserve the safety guidelines on steering
wheel adjustment (
Ypage 115).
XMake sure that steering wheel :is adjus-
ted properly.
Adjusting the steering wheel manually
(
Ypage 115)
Adjusting the steering wheel electrically
(
Ypage 116)
When adjusting the steering wheel, make
sure that:
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 instru-
ment cluster clearly
XObserve the safety guidelines for seat belts
(
Ypage 44).
XCheck whether you have fastened seat
belt ;properly (
Ypage 46).
108Correct driver's seat position
Seats, steering wheel and mirrors
The seat belt should:
Rfit snugly across your body
Rbe routed across the middle of your shoul-
der
Rbe routed in your pelvic area across the hip
joints
XBefore starting off, adjust the rear-view mir-
ror and the exterior mirrors in such a way
that you have a good view of road and traf-
fic conditions (
Ypage 119).
XVehicles with memory function:you can
store the seat, steering wheel, exterior mir-
ror and head-up display settings with the
memory function (
Ypage 122).
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 48) and "Children in the Vehicle"
(
Ypage 60).
GWARNING
If the driver's seat is not engaged, it could
move unexpectedly while the vehicle is in
motion. This could cause you to lose control of the vehicle. There is a risk of an accident.
Always make sure that the driver's seat is
engaged before starting the vehicle.
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
Seats109
Seats, steering wheel and mirrors
Z
poses an increased risk of injury or even fatalinjury.
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
heating 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
passengers, if possible.
Rwhen the seat heating is in operation, donot cover the seats with insulating mate-
rials, e.g. blankets, coats, bags, seat cov-
ers, child seats or booster seats.
!Make sure that there are no objects in the
footwell under or behind the seats when
moving the seats back. There is a risk that
the seats and/or the objects could be dam- aged.
iThe rear-compartment head restraints
can be removed (
Ypage 112).
Vehicles without the through-loading fea-
ture: the head restraints cannot be
removed from the rear compartment seats.
For more information, contact a qualified
specialist workshop.
iFurther related subjects:
REASY-PACK quickfold rear bench seat
(
Ypage 309)
Adjusting the seats electrically
Electrically adjustable seats with
memory function
:Head restraint height
;Backrest angle
=Seat height
?Seat cushion length
ASeat cushion angle
BSeat fore-and-aft adjustment
iFurther related subjects:
RYou can store the seat settings using the
memory function (
Ypage 122).
RIf PRE-SAFE®is triggered, the front-
passenger seat will be moved to a better
position if it was previously in an unfav-
orable position (
Ypage 59).
Vehicles with AMG Performance Seat: the
height of the head restraints cannot be adjus-
ted.
Electrically adjustable seats without
memory function
:Backrest angle
;Seat height
110Seats
Seats, steering wheel and mirrors
=Seat cushion length
?Seat cushion angle
ASeat fore-and-aft adjustment
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.
General notes
Pay attention to the important safety notes
(
Ypage 109).
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.
Adjusting the head restraint height
manually
XTo raise: pull the head restraint up to the
desired position.
XTo lower: press release catch :in the
direction of the arrow and push the head
restraint down to the desired position.
Adjusting the head restraint fore-and-
aft position manually
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 in the desired position.
XTo move backwards: press and hold
release button :.
XPush the head restraint back.
XRelease the release button once the head
restraint is in the desired position.
XEnsure that the head restraint has engaged
properly.
Seats111
Seats, steering wheel and mirrors
Z
Adjusting the heightofthe head
restraints electri cally
XTo adjust thehea drestrain theight :slide
th eswitch for head restrain tadjustmen t
(
Ypage 110) up or down in th edirection of
th earrow.
Vehicles wit hAM GPerformance Seat: th e
height of th ehead restraints canno tbe adjus-
ted.
Adjusting the rear seat head restraint
height
XOnce th ehead restrain tis fully lowered,
press release catch :.
XTo raise:pull thehead restrain tup to th e
desired position .
XTo lower:press release catch :and push
th ehead restrain tdown until it is in th e
desired position .
Installing and removing rear head
restraints
XReleaseth erear seat backr estand fol dit
slightly forwards (
Ypage 309).
XTo remove:pull thehead restrain tup to
th e stop.
XPress release catch :and pull th ehead
restrain tout of th eguide s.
XTo re-install :insert th ehead restrain t so
that th enotches on th ebar are on th elef t
when viewed in th edirection of travel .
XPush thehead restrain tdown until you hear
it engage in position .
XFold backth erear seat backr estuntil it
engage s.
Adjusting the 4-way lumbar support
:To raiseth ebackr estcontour
;Tosofte nth ebackrest contour
=To lower th ebackr estcontour
?To harden th ebackrest contour
You can adj ustthecontour of th efron tseat
backrest sindividually to provide optimum
support for your back.
Switching the seat heating on/off
Switching on/off
GWARNIN G
Repeatedly switching on th eseat heating can
caus eth eseat cushion and backrest pads to
become ver yhot .The healt hof person swit h
limite dtemperature sensitivit yor alimite d
abilit yto reac tto excessivel yhigh tempera-
112Seats
Seats, steering wheel and mirrors
tures may be affected or they may even suffer
burn-like injuries. There is a risk of injury.
Therefore, do not switch the seat heating on
repeatedly.
Driver's and front-passenger seat
Rear seats
The three red indicator lamps in the button
indicate the heating level you have selected.
The system automatically switches down
from level3to level 2after approximately
eight minutes.
The system automatically switches down
from level 2to level 1after approximately ten
minutes.
The system automatically switches off
approximately 20 minutes after it is set to
level 1.
XTurn the SmartKey to position 1or 2in the
ignition lock (
Ypage 153).
XTo switch on: press button:repeatedly
until the desired heating level is set.
XTo switch off: press button:repeatedly
until all the indicator lamps go out.
iIf the battery voltage is too low, the seat
heating may switch off.
iIf drive program E(Ypage 166) is selec-
ted, the power of the seat heating is
reduced.
Seats113
Seats, steering wheel and mirrors
Z
Problems with the seat heating
ProblemPossible causes/consequences andMSolutions
The seat heating has
switched off prema-
turely or cannot be
switched on.The on-board voltage is too low because too many electrical con-
sumers 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 can be
switched back on manually.
Switching the seat ventilation on/off
Switching on/off
The three blue indicator lamps in the buttons
indicate the ventilation level you have selec-
ted.
XTurn the SmartKey to position 1or 2in the
ignition lock (
Ypage 153).
XTo switch on: press button:repeatedly
until the desired ventilation level is set.
XTo switch off: press button:repeatedly
until all the indicator lamps go out.
iIf the battery voltage is too low, the seat
ventilation may switch off.
iYou can open the side windows and the
sliding sunroof using the "Convenience
opening" feature (
Ypage 99). The seat ven-
tilation of the driver's seat automatically
switches to the highest level.
iWhen the vehicle is stationary, the fan
speed can be reduced automatically. This
reduces the noises of the seat ventilation.
114Seats
Seats, steering wheel and mirrors
Problems with the seat ventilation
ProblemPossible causes/consequences andMSolutions
The seat ventilation has
switched off prema-
turely or cannot be
switched on.The on-board voltage is too low because too many electrical con-
sumers 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 ventilation can
be switched back on.
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 key in the
ignition lock.
Adjusting the steering wheel man-
ually
:Release lever
;To adjust the steering wheel height
=To adjust 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
position.
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 wheel115
Seats, steering wheel and mirrors
Z