2014 MERCEDES-BENZ CLS seat adjustment

Rear windowdefroster
Problem (malfunction)...................141
Switching on/off...........................140
Refrigerant (air-conditioning
system)
Important safety notes..................378
Refueling
Fuel gauge...............................31, 219
Important safety notes..................164
Refueling process..........................165
see Fuel
Remote control
Garage door opener.......................299
Programming (garage door
opener)..........................................299
Reportingsafety defects....................26
Reserve (fueltank)
see Fuel
Reserve fuel
Display message............................251
Warning lamp ................................. 273
see Fuel
Residual heat (climate control)........141
Reverse gear (selector lever)...........155
Reversing feature
Side windows...................................88
Sliding sunroof.................................93
Reversing lamps (display
message)............................................ 246
Roadside Assistance(breakdown)....23
Roller sunblind
Rearwindow..................................287
Roof carrier........................................283
Roof lining and carpets (cleaning
guidelines).........................................318
Roof load (maximum)........................379
S
Safety
Childreninthe vehicle.....................60
Child restraint systems....................60
Occupant Classification System
(OCS)...............................................47
Seat belts
Adjusting the driver's and front-
passenger seatbelt.........................57
Adjusting the height ......................... 58
Belt force limiters............................59
Cleaning ......................................... 317
Correct usage..................................56
Emergency Tensioning Devices ........59
Fastening.........................................56
Important safety guidelines.............55
Releasing.........................................58
Safety guidelines.............................41
Switching beltadjustment on/off
(on-board computer)......................233
Warning lamp ................................. 265
Warning lamp (function) ................... 58
Seats
Adjusting (electrically)...................100
Adjusting the 4-way lumbar
support..........................................103
Adjusting the active multicontour
seat...............................................103
Adjusting the headrestraint..........100
Adjusting the multicontour seat..... 102
Cleaning the cover.........................317
Correct driver's seatposition ........... 98
Important safety notes....................99
Massagefunction..........................103
Overview..........................................99
Seat backrest displaymessage.....261
Seat heating problem....................105
Seat ventilation problem................106
Storing settings (memory
function)........................................112
Switching seatheating on/off.......104
Switching seatventilation on/off..105
Selector lever
Cleaning ......................................... 316
Sensors (cleaning instructions).......315
Service menu (on-board computer).229
Service products
Brake fluid.....................................376
Coolant (engine)............................377
Engine oil.......................................375
Fuel ................................................ 374
Important safety notes..................373
Refrigerant (air-conditioning
system)..........................................378
Washer fluid ...................................378
Settings
Factory (on-board computer).........234
On-board computer.......................229
Index15

ProblemPossible causes/consequences andSolutions
The PASSENGER AIR
BAG OFF indicator
lamp does not light up
and/or does not stay
on.
The front-passenger
seat is:
Runoccupied
Roccupied with the
weight ofachild up
to twelve months old
inachild restraint
system
The COS is malfunctioning.
XMake sure there is nothingbetween the seat cushion and the
child seat.
XMake sure that the backrest and base of the child restraint
system rest on the front-passenger seat. If necessary, adjust
the position of the front-passenger seat.
XWhen installing the child restraint system, make sure that the
seat belt is tight. Do not pull the seat belt tight with the front-
passenger seat adjustment.This could result in the seat belt
being pulledtoo tightly.
XCheck the installation of the child restraint system.
XMake sure that no objectsare applying additionalweight onto
the seat.
XIf the PASSENGER AIR BAG OFF indicator lamp remains off, have
the COS checked immediatelyataqualified specialist
workshop. Do not transportachild on the front-passenger seat
until the COS has been repaired.
XObservethe additional display messages in the multifunction
display (Ypage 244).
NECK-PRO head restraints/NECK-
PRO luxuryhead restraints
Importantsafetynotes
GWARNING
The function of the head restraint may be
impaired if you:
Rattach objects such as coat hangers to the
head restraints, for example
Ruse head restraint covers
If you do so, the head restraintscannot fulfill
their intended protective function in the event
of an accident. In addition, objects attached
to the head restraintscould endanger other
vehicle occupants. There is an increased risk
of injury.
Do not attach any objects to the head
restraintsand do not use head restraint
covers.
NECK-PRO head restraints/NECK-PRO luxury
head restraintsincrease protection of the
driver'sand front-passenger's head and
neck. In the event ofarear collision of a
certain severity, the NECK-PRO head
restraints/NECK-PRO luxury head restraints
on the driver'sand the front-passenger seats
are moved forwards and upwards. This
provides better head support.
If the NECK-PRO head restraints/NECK-PRO
luxury head restraintshave been triggered in
an accident, reset the NECK-PRO head
restraints/NECK-PRO luxury head restraints
on the driver'sand front-passenger seats
(Ypage 54). Otherwise, the additional
protection will not be available in the event of
another rear-end collision. NECK-PRO head
restraints/NECK-PRO luxury head restraints
that have been triggered are moved forwards
and can no longer be adjusted.
Mercedes-Benz recommends that you have
the NECK-PRO head restraints/NECK-PRO
luxury head restraintschecked ataqualified
specialist workshop afterarear-end collision.
Occupant safety53
Safety
Z

Rif, on vehicles with DISTRONIC PLUS,the
radar sensor system detectsanimminent
dangerofcollision in certain situations.
Rin critical driving situations, e.g. when
physical limits are exceeded and the
vehicle understeers or oversteers severely.
PRE-SAFE®takes the following measures
depending on the hazardous situation
detected:
Rthe front seat belts are pre-tensioned.
Rthe front-passenger seat is adjusted if it is
in an unfavorable position.
Rvehicles withamulticontour seat or active
multicontour seat: the air pressure in the
side bolsters of the seat cushion and
backrest is increased.
Rif the vehicle skids, the sliding sunroof and
the side windows are closed so that only a
small gap remains.
If the hazardous situation passes without
resulting in an accident,PRE-SAFE®slackens
the belt pre-tensioning. The air pressure in
the side bolsters on the multicontour seat/
active multicontour seat is reduced again. All
settings made by PRE-SAFE®can then be
reversed.
If the seat belts are not released:
XWhen the vehicle is stationary, move the
backrest or seat back slightly.
The seat belt pre-tensioningisreduced and
the lockingmechanism is released.
Information about seat belt adjustment, a
conveniencefunction integrated into PRE-
SAFE®,can be found in the "Seat belt
adjustment" section (Ypage 57).
Seat belts
Important safety notes
GWARNING
The seat belt does not offer the intended level
of protection if the backrest is not in the
upright position. When braking 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 make sure that the seat
is in the upright position.
GWARNING
Seat belts cannot protect as intended, if:
Rthey are damaged, extremely dirty,
bleached or dyed
Rthe seat belt buckle is damaged or
extremely dirty
Rthe Emergency TensioningDevices or the
belt anchorage has been modified.
Damage caused to seat belts in an accident
may not be visible, e.g. by splinters of glass.
Modified or damaged seat belts can tear or
fail, for example in the event of an accident.
Modified Emergency TensioningDevices may
be deployed unintentionally or fail to be
deployed when required. There is an
increased risk of injury, possibly even fatal.
Never modify seat belts, Emergency
TensioningDevices, seat belt anchorages and
inertia reels. Ensure that seat belts are not
damaged or worn and are clean.
Only use seat belts that have been approved
for your vehicle by Mercedes-Benz.
The use of seat belts and infant and child
restraint systems is required by law in:
Rall 50 states
Rthe U.S. territories
Rthe District of Columbia
Rall Canadianprovinces
Even where this is not required by law,all
vehicleoccupants should correctly fasten
their seat belts before starting the journey.
iSee "Children in the vehicle"
(Ypage60) for further information on
infants and children traveling in the vehicle
as wellasonchild restraint systems.
Occupant safety55
Safety
Z

placed in the rear seat whenever possible.
Regardless of seatingposition,children 12
years old and under must be seated and
properly secured in an appropriately sized
child restraint system or booster seat
recommended for the size and weight of the
child. For additional information,see the
"Children in the vehicle" section.
Achild's risk of serious or fatal injuries is
significantly increased if the child restraints
are not properly secured in the vehicle and/
or the child is not properly secured in the child
restraint.
XAdjust the seat and move the backrest to
an almost vertical position (Ypage 98).
XPull the seat belt smoothly through belt
sash guide.
XWithout twisting it, guide the shoulder
section of the seat belt across the middle
of your shoulder and the lap section across
your pelvis.
XEngage belt tonguein buckle$.
Seat-belt adjustment:ifnecessary, the
driver's and front-passenger seat belts
automatically adjust to the upper body
(Ypage 57).
XIf necessary, adjust the seat belt to the
appropriate height (Ypage 58).
XIf necessary, pull upwards on the shoulder
section of the seat belt to tighten the belt
across your body.
All seat belts except the driver's seat belt are
equipped withaspecial seat belt retractor to
securely fasten child restraint systems in the
vehicle. Further information can be found
under "Special seat belt retractor"
(Ypage 63).
For more information about releasing the seat
belt with release button!,see "Releasing
seat belts" (Ypage 58).
Seat belt adjustment
The seat-belt adjustment function adjusts the
driver's and front-passenger seat belt to the
upper body of the occupants.
The belt strap is tightened slightly when:
Ryou engage the belt tongue in the belt
buckle and you then turn the SmartKey to
position2in the ignition lock.
Rthe SmartKey is in position2in the ignition
lock and you then engage the belt tongue
in the buckle.
The seat-belt adjustment will apply a
retraction forceifany slack is detected
between the occupant and the seat belt. Do
not hold on to the seat belt tightly while it is
adjusting. You can switch the seat-belt
adjustment on and off in the on-board
computer (Ypage 233).
The seat-belt adjustment is an integral part of
the PRE-SAFE®convenience function.More
information about PRE-SAFE®can be found
under "PRE-SAFE®(preventativeoccupant
protection)" (Ypage 54).
Occupant safety57
Safety
Z

Beltheight adjustment
Youcan adjustthe seat belt height on the
front seats. Adjust the belt toaheight that
allowsthe upper part of the seat belt to be
routed across the center of your shoulder.
XTo raise:slide the belt sash guide upwards.
The belt sash guide engages in various
positions.
XTo lower:press and hold belt sash guide
release.
XSlide the belt sash guide downwards.
XRelease belt sash guide releaseand
make sure that the belt sash guide has
engaged.
Releasing seat belts
!Make sure that the seat belt is fully rolled
up. Otherwise, the seat belt or belt tongue
will be trapped in the door or in the seat
mechanism. This could damage the door,
the door trim panel and the seat belt.
Damaged seat belts can no longer fulfill
their protective function and must be
replaced. Visitaqualified specialist
workshop.
XPress release button!on belt buckle$.
XGuidebelt tongueto belt sash
guide.
Belt warning for the driver and front
passenger
Regardless of whether the driver's and front-
passenger seat belts have already been
fastened, theseat belt warning lamp
lights up for six seconds each time the engine
is started. It then goes out if the driver and
the front passenger have already fastened
their seat belts.
If the driver's seat belt is not fastened when
the engine is started, an additional warning
tone will sound. This warning tone stops after
amaximum of six seconds or once the
driver's seat belt is fastened.
If after six seconds, the driver or front
passenger have not fastened their seat belts
and the doors are closed:
Rtheseat belt warning lamp remains lit
as long as the driver's or front-passenger's
seat belt is not fastened
and
Rifavehicle speed of 15 mph (25 km/h) is
exceeded, theseat belt warning lamp
begins to flash.Awarning tone also sounds
withincreasing intensityforamaximum of
58Occupant safety
Safety

Useful information
iThis Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please notethat your vehicle may
not be equipped with all features
described. This also applies to safety-
related systemsand functions.
iRead the information on qualified
specialist workshops: (Ypage 26).
Correct driver's seat position
GWARNING
You could lose controlofyour vehicle if you
do the following while driving:
Radjust the driver'sseat, head restraint,
steering wheel or mirrors
Rfastenthe seat belt
There isarisk of an accident.
Adjust the driver's seat, head restraint,
steering wheel and mirror and fasten your
seat belt before startingthe engine.
XObserve the safety guidelines on seat
adjustment (Ypage 99).
XMake sure that seat$is adjusted
properly.
Electrical seat adjustment (Ypage 100)
When adjusting the seat, make sure that:
Ryou are as far away from the driver's air bag
as possible.
Ryou are sitting inanormal 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.
XCheck whether the head restraint is
adjusted 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 106).
XMake sure that steering wheelis
adjusted properly.
Adjustingthe steering wheel electrically
(Ypage 106)
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
instrumentcluster clearly.
XObserve the safetyguidelinesfor seat belts
(Ypage 55).
XCheck whether you have fastened seat
beltproperly (Ypage 56).
98Correct driver'sseat position
Seats, steering wheel and mirrors

The seat belt should:
Rfit snugly across your body
Rbe routed across the middle of your
shoulder
Rbe routed in your pelvic area across the hip
joints
XBefore starting off, adjust the rear-view
mirror and the exterior mirrors in such a
way that you haveagood view of road and
traffic conditions (Ypage 109).
XVehicles withamemoryfunction:save
the seat, steeringwheel and exterior mirror
settings with the memory function
(Ypage 112).
Seats
Important safety notes
GWARNING
Children could become trapped if they adjust
the seats, particularly when unattended.
There isarisk of injury.
When leaving the vehicle, alwaystake the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
GWARNING
You could lose control of your vehicle if you
do the following while driving:
Radjust the driver's seat, head restraint,
steeringwheel or mirrors
Rfasten the seat belt
There isarisk of an accident.
Adjust the driver's seat, head restraint,
steeringwheel and mirror and fasten your
seat belt before starting the engine.
GWARNING
If you adjust the seat height carelessly, you or
other vehicle occupantscould be trapped and
thereby injured. Children in particular could
accidentally press the electrical seat
adjustmentbuttonsand become trapped.
Thereisariskofinjury.
While moving the seats, make sure thatyour
hands or other body parts do not get under
the lever assembly of the seat adjustment
system.
GWARNING
When you adjustaseat, you or other vehicle
occupantscould become trapped, e.g. on the
seat guide rail. There isarisk of injury.
Make sure when adjustingaseat that no one
has any body parts in the sweep of the seat.
GWARNING
If head restraints are not installed and
adjusted correctly, they cannot provide
protection 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
installed. Beforedriving 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 the backrest is not in the
upright position.When braking 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 make sure that the seat
is in the upright position.
GWARNING
According to accident statistics, children are
safer when properly restrained on the rear
seats than on the front-passenger seat. Thus,
we strongly recommendthat children be
placed in the rear seat whenever possible.
Regardless of seating position, children 12
years old and under must be seated and
Seats99
Seats, steering whee la nd mirrors
Z

properly secured in an appropriately sized
child restraint system or booster seat
recommended for the size and weight of the
child. For additional information,see the
"Children in the vehicle" section.
Achild's risk of serious or fatal injuries is
significantly increased if the child restraints
are not properly secured in the vehicle and/
or the child is not properly secured in the child
restraint.
!To avoid damage to the seats and the seat
heating, observe the following information:
Rkeep liquids from spilling on the seats. If
liquidisspilled 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 objectsonthe
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, do
not cover the seats with insulating
materials, e.g. blankets, coats, bags,
seat covers, child seats or booster seats.
!Make sure that there are no objectsinthe
footwell or behind the seats when resetting
the seats. There isarisk that the seats
and/or the objectscould be damaged.
iThe head restraintsinthe front seats are
installed with the NECK-PRO system
(Ypage 53). For this reason, it is not
possible to remove the head restraints
from the front seats.
For more information,contactaqualified
specialist workshop.
iFurther related subjects:
Adjusting the seats
Head restraint height
Seat cushion angle
$Seat height
!Seat fore-and-aft adjustment
Backrest angle
iIf PRE-SAFE®is triggered, the front-
passenger seat will be moved toabetter
position if it was previously in an
unfavorable position.
iYou can store the seat settings using the
memory function (Ypage 112).
iVehicles with the through-loading
feature: if you fold downarear seat
backrest, the respective front seat is
moved forwards slightly in order to avoid
contact.
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 isarisk of an accident.
Adjust the driver's seat, head restraint,
steering wheel and mirror and fasten your
seat belt before startingthe engine.
100Seats
Seats, steering whee la nd mirrors