2015 MERCEDES-BENZ S-Class driver seat adjustment

with a belt bag. Never use a seat belt equipped
with a belt bag to secure a forward or rear-
ward-facing child restraint system or a boos-
ter seat that has not been approved. For infor-
mation on approved child restraint systems,
please contact an authorized Mercedes-Benz Center.
Further information on child restraint sys-
tems (Y page 69). When triggered, belt bags
:open, increas-
ing the protected area of the occupants' ribc-
ages. The beltbags are triggered depending
on the type and severity of the accident.
Fastening and adjusting the seat belts Observe the safety notes on the seat belt
(Y
page 51) and the notes on correct use of
seat belts (Y page 53). X
Adjust the seat (Y page 120).
The seat backrest must be in an almost
vertical position.
X Pull the seat belt smoothly from belt outlet
= and engage belt tongue ;into belt
buckle :.
The seat belt on the driver’s seat and the
front-passenger seat may be tightened
automatically, see "Belt adjustment"
(Y page 55).
X If necessary, pull upwards on the shoulder
section of the seat belt to tighten the belt
across your body. The shoulder section of the seat belt must
always be routed across the center of the
shoulder. Adjust the belt outlet if necessary.
X To raise: slide the belt outlet upwards.
The belt outlet will engage in various posi-
tions.
X To lower: hold belt outlet release :and
slide the belt outlet downwards.
X Let go of belt outlet release :in the
desired position and make sure that the
belt outlet engages.
All seat belts except the driver's seat belt are equipped with a special seat belt retractor tosecurely fasten child restraint systems in the
vehicle. Further information can be found
under "Special seat belt retractor"
(Y page 69). 54
Occupant safetySafety

Rear seat belt buckle extenders
The seat belt extender is an integral part of
the PRE-SAFE ®
convenience function. It is
used on the outer rear seats.
Always ensure that it is possible to move the
belt buckle freely. Always stow objects in the
vehicle correctly.
To assist you in finding the seat belt buckle
and fastening the seat belt:
R the belt buckle moves forwards to a con-
venient position
R the belt buckle is illuminated
After the seat belt is fastened, the belt buckle returns to its normal position. The seat belt
then lies tight across the lap and thorax areas.
Incorporation into the PRE-SAFE ®
system:
the belt buckle is lowered quickly in certain
hazardous situations. This pre-tensions the
seat belt.
Incorporation into the automatic meas-
ures after the accident: in this situation, the
belt buckle is illuminated and extended after
a rear door is opened.
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. Dam- aged seat belts can no longer fulfill their
protective function and must be replaced.
Visit a qualified specialist workshop. X
Press release button :, hold belt
tongue ;firmly and guide it back towards
belt outlet =.
Seat belt adjustment The seat-belt adjustment is an integral part of
the PRE-SAFE ®
convenience function. This
function adjusts the driver's and front-
passenger seat belt to the upper body of the
occupants.
The belt strap is tightened slightly when:
R the belt tongue is engaged in the buckle
and
R the ignition is switched on
The seat-belt adjustment will apply a certain
retraction force if any slack is detected
between the vehicle 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 using COMAND. Information on
switching the belt adjustment function on and off can be found in the Digital Operator's
Manual or in the separate COMAND operating
instructions. Occupant safety
55Safety Z

bolsters is reduced again. All settings made
by PRE-SAFE ®
can then be reversed.
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. Infor-
mation about the convenience function can
be found under "Belt adjustment"
(Y page 55). PRE-SAFE
®
PLUS (anticipatory occu-
pant protection system PLUS)
Introduction PRE-SAFE
®
PLUS is only available in vehicles
with the Driving Assistance 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 hazard-
ous situations, 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 when PRE-SAFE ®
PLUS intervenes.
PRE-SAFE ®
PLUS does not intervene if the
vehicle is backing up.
PRE-SAFE ®
PLUS does not perform braking
actions while the vehicle is in motion or when
Parking Guidance is active.
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 meas-
ures 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 vehi-
cle is stationary.
- the seat belts are pre-tensioned.
The PRE-SAFE ®
PLUS braking application is
canceled:
R if the accelerator pedal is depressed when
a gear is engaged
R if the risk of a collision passes or is no lon-
ger detected
R if DISTRONIC PLUS indicates an intention
to pull away
If the hazardous situation passes without
resulting 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 activated
R the emergency lighting is activated
R the vehicle doors are unlocked
R the front side windows are lowered
R the electrically adjustable steering wheel is
raised
R the engine is switched off and the fuel sup-
ply is cut off
R vehicles with seat belt extenders: the seat-
belt buckles for the outer rear seats are
illuminated and extend forwards 68
Occupant safetySafety

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.
i Read the information on qualified special-
ist workshops (Y page 29). 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. X
Observe the safety guidelines on seat
adjustment (Y page 121).
X Check whether you have adjusted seat =
properly (Y page 122).
When adjusting the seat, make sure that:
R you are as far away from the driver's air bag
as possible
R you are sitting in a normal upright position
R you can fasten the seat belt properly
R you have moved the backrest to an almost
vertical position
R you have set the seat cushion angle so that
your thighs are gently supported
R you can depress the pedals properly
X Check 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.
X Observe the safety guidelines on steering
wheel adjustment (Y page 137).
X Make sure that steering wheel :is adjus-
ted properly (Y page 137).
When adjusting the steering wheel, make
sure that:
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 instru-
ment cluster clearly
X Observe the safety guidelines for seat belts
(Y page 51).
X Check whether you have fastened seat
belt ;properly (Y page 54).
The seat belt should:
R fit snugly across your body
R be routed across the middle of your shoul-
der
R be routed in your pelvic area across the hip
joints 120
Correct driver's seat positionSeats, steering wheel and mirrors

X
Before 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 (Y page 141).
X Vehicles with a memory function: save
the seat, steering wheel and exterior mirror settings with the memory function
(Y page 144). 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. Never leave children unsupervised in the vehicle.
The seats can still be adjusted when there is
no SmartKey in the ignition lock. 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 you adjust the seat height carelessly, you or other vehicle occupants could be trapped andthereby 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. 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.
Make sure when adjusting a seat that no one
has any body parts in the sweep of the seat. G
WARNING
If head restraints are not installed and adjus-
ted 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 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. G
WARNING
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:
R keep liquids from spilling on the seats. If
liquid is spilled on the seats, dry them as
soon as possible.
R if 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.
R clean the seat covers as recommended;
see "Interior care". Seats
121Seats, steering wheel and mirrors Z

You can exit the reclined position and
adjust the seat position by:
R calling up a stored position using mem-
ory buttons 1or 2(Y page 144)
R manually adjusting the seat to the
desired position (Y page 122).
i The steps for setting the reclined position
are not always carried out simultaneously.
The legrest folds down if overloaded. If this is
the case fold up the legrest and engage it. Adjusting the front-passenger seat
from the driver’s seat
Important safety notes G
WARNING
The front-air bags for could also injure the
vehicle occupants in the front If the front
seats are positioned too close to the dash-
board or steering wheel. This poses an
increased risk of injury or even fatal injury.
Always adjust the front seats so that they are
as far from the front air bags as possible. Also
observe the notes on the correct adjustment
of the seats. 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. Never leave children unsupervised in the vehicle. 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.
Make sure when adjusting a seat that no one
has any body parts in the sweep of the seat.
! Do not move the front-passenger seat
fully forwards if there are objects in the parcel net in the front-passenger footwell.
The objects could otherwise be damaged.
Adjusting the front-passenger seat X
To select the front-passenger seat:
press button :repeatedly until the indi-
cator lamp in the button lights up.
When the indicator lamp in button :lights
up, for the front-passenger seat you can
adjust:
R adjust the seat (Y page 122)
R seat heating (Y page 134)
R seat ventilation (Y page 136)
R the memory function to call up or save set-
tings (Y page 143). Adjusting the front-passenger seat
from the rear
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. 124
SeatsSeats, steering wheel and mirrors

X
Insert head restraint :into the brackets.
The head restraint must engage on both
sides.
X Press down red pin =.
If the pin can be pressed down and is then
no longer visible, the head restraint has
engaged correctly.
X Fold covers ;forwards and close them.
The head restraint folds into position auto- matically.
Moving the front-passenger seat into
the normal position Adjusting from the rear compartment
You can use the override button to disable
this function (Y page 75).
The head restraint must be installed, in order for the front-passenger seat to be moved intothe normal position (Y page 129).
X To select the front-passenger seat:
press button :repeatedly until the indi-
cator lamp in the button lights up.
The front-passenger seat is selected if the
indicator lamp in the button lights up.
X Press button =backwards and hold it in
this position.
The front-passenger seat moves into the
normal adjustment range at the threshold
of the area for chauffeur mode. The head
restraint folds into position.
If you continue to hold down button =, the
seat continues to move backwards. or
X Briefly press button ;backwards.
The front-passenger seat moves into the
normal adjustment range at the threshold
to the area for chauffeur mode. The head
restraint folds into position.
i Further settings are available via the
memory adjustment buttons, if:
R a position in the normal setting has
already been saved.
R the front-passenger seat has been selec-
ted with button :
Adjusting from the driver's seat The head restraint must be installed, in order
for the front-passenger seat to be moved into the normal position (Y page 129).
X To select the front-passenger seat:
press button :repeatedly until the indi-
cator lamp in the button lights up.
The front-passenger seat is selected if the
indicator lamp in the button lights up.
X Press button =backwards and hold it in
this position.
The front-passenger seat moves into the
normal adjustment range at the threshold
of the area for chauffeur mode. The head
restraint folds into position.
If you continue to hold down button =, the
seat continues to move backwards.
or X Briefly press button ;backwards.
The front-passenger seat moves into the
normal adjustment range at the threshold 130
SeatsSeats, steering wheel and mirrors

to the area for chauffeur mode. The head
restraint folds into position.
i Further settings are available via the
memory adjustment buttons if the front-
passenger seat has been selected with but- ton :.
Adjusting from the front-passenger seat X Press any seat adjustment button.
The front-passenger seat moves into the
normal adjustment range at the threshold
of the area for chauffeur mode. The head
restraint folds into position.
Fully reclined position of the front-
passenger seat Adjusting
This function is only available on vehicles with
electrically adjustable rear seats.
You can move the front-passenger seat into a fully reclined position. The rear seat and front-
passenger seat then provide a continuous
surface.
To do so:
R move the seat cushion of the rear seat as
far back as possible in a longitudinal direc-
tion (Y page 123)
R move the front-passenger seat into posi-
tion for chauffeur mode (Y page 128)
R remove the front-passenger seat head
restraint (Y page 129)
R move the front-passenger seat so that the
backrest is in a fully reclined position
(Y page 122)
Exiting
To exit the fully reclined position:
R fold the backrest upright to a suitable posi-
tion
R install the head restraint (Y page 129) Adjusting the head restraints
Adjusting the front 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 head restraints are not installed and adjus-
ted 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 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
(Y page 121).
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. Seats
131Seats, steering wheel and mirrors Z