2010 MERCEDES-BENZ CLS550 window

conjunction with a properly positioned and
fastened seat belt.
Side impact air bags
G
Observe Safety notes, see page 37. Front side impact air bags
: and rear side
impact air bags ; are designed to provide
increased protection for the thorax but not
the head, neck and arms.
The side impact air bags are deployed
R on the impacted side of the vehicle
R in instances with a high rate of lateral
vehicle deceleration or acceleration
R regardless of whether the seat belts on the
impacted side of the vehicle are in use
R independently of the front air bags
R independently of the ETDs
The side impact air bags are not deployed in
side impacts which do not exceed the
system’s deployment threshold.
The side impact air bags will not deploy in the
event of a rollover unless the vehicle’s rate of
lateral deceleration or acceleration exceeds
the preset deployment threshold for the side
impact air bags. G
Warning!
Only use seat covers which have been tested
and approved by Mercedes-Benz for your
vehicle model. Using other seat covers may
interfere with or prevent the deployment of
the front side impact air bags. Contact an authorized Mercedes-Benz Center for
availability.
Window curtain air bags G
Observe Safety notes, see page 37. Window curtain air bags
: are designed to
provide increased protection for the head but
not the chest or arms.
Window curtain air bags : are deployed
R on the impacted side of the vehicle
R in instances with a high rate of lateral
vehicle deceleration or acceleration
R independently of the front air bags
R regardless of whether the front passenger
seat is occupied
R in certain vehicle rollovers, if the system
determines that air bag deployment can
offer additional protection to that provided
by the seat belt
Window curtain air bags : are not deployed
in impacts which do not exceed the system’s
deployment threshold.
Window curtain air bags : deploy in the area
indicated by the arrows. Occupant Classification System
The Occupant Classification System (OCS)
activates or deactivates the front passenger
front air bag automatically. The respective
status is based on the classified occupant Occupant safety
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weight category determined by weight sensor
readings from the front passenger seat.
The system does not deactivate
R
the front passenger side impact air bag
R the window curtain air bag
R the Emergency Tensioning Devices (ETDs)
To
be classified correctly, the front passenger
must sit
R with the seat belt properly fastened
R in a position that is as upright as possible
with the back against the seat backrest
R with the feet on the floor
If the occupant’s weight is transferred to
another object in the vehicle (e.g. by leaning
on armrests), the OCS may not be able to
properly approximate the occupant’s weight
category.
Furthermore, the occupant weight may
appear to increase or decrease due to the
following:
R objects hanging on the seat
R objects lodged underneath the seat
R objects stuffed between the seat and
middle console
R objects stuffed between the seat and door
R other passengers pushing on the seat
R objects applying pressure to the back of
the seat
Always make sure the seat has clearance
in all directions at all times.
If your seat, including the trim cover and
cushion, needs to be serviced in any way, take
the vehicle to an authorized Mercedes-Benz
Center.
Only seat accessories approved by
Mercedes-Benz may be used.
Both the driver and the front passenger
should always use the 04
indicator lamp as an indication of whether or
not the front passenger is properly
positioned. G
Warning!
If the 04 indicator lamp
illuminates when an adult or someone larger
than a small individual is in the front
passenger seat, have the front passenger
reposition himself or herself in the seat until
the 04 indicator lamp goes out,
or

check whether objects are caught under or
around the seat.
In the event of a collision, the air bag control
unit will not allow front passenger front air bag
deployment when the OCS has classified the
front passenger seat occupant as weighting
as much as or less than a typical 12-month-
old child in a standard child restraint or if the
front passenger seat is classified as being
empty.
When the OCS senses that the front
passenger seat occupant is classified as
being up to or less than the weight of a typical
12-month-old child in a standard child
restraint, the 04 indicator lamp
will illuminate when the engine is started and
remain illuminated, indicating that the front
passenger front air bag is deactivated.
When the OCS senses that the front
passenger seat is classified as being empty,
the 04 indicator lamp will
illuminate when the engine is started and
remain illuminated, indicating that the front
passenger front air bag is deactivated.
When the OCS senses that the front
passenger seat occupant is classified as
being heavier than the weight of a typical
12-month-old child seated in a standard child
restraint or as being a small individual (such
as a young teenager or a small adult), the
04 indicator lamp will illuminate
for approximately 6 seconds when the engine
is started and then, depending on occupant
weight sensor readings from the seat, remain
illuminated or go out. With the
04 indicator lamp illuminated,
the front passenger front air bag is
deactivated. With the 04 42
Occupant safety
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your seat belt. The air bags can only protect
as intended if the occupants are properly
wearing their seat belts.
G
Warning!
Never ride in a moving vehicle with the seat
backrest in an excessively reclined position as
this can be dangerous. You could slide under
the seat belt in a collision. If you slide under
it, the seat belt would apply force at the
abdomen or neck. That could cause serious
or even fatal injuries. The seat backrest and
seat belt provide the best restraint when the
wearer is in a position that is as upright as
possible and the seat belt is properly
positioned on the body. G
Warning!
Never let more people ride in the vehicle than
there are seat belts available. Make sure
everyone riding in the vehicle is correctly
restrained with a separate seat belt. Never
use

a seat belt for more than one person at a
time. G
Warning!
Damaged seat belts or seat belts that have
been
subjected to stress in an accident must
be replaced. Also, the seat belt anchoring
points must be checked.
Only use seat belts which have been approved
by Mercedes-Benz.
Do not make any modifications to the seat
belts. This can lead to unintended activation
of the ETDs or to their failure to activate when
necessary.
Do not bleach or dye seat belts as this may
severely weaken them. In a crash they may
not be able to provide adequate protection.
Have all work carried out only by qualified
technicians. Contact an authorized
Mercedes-Benz Center. Proper use of seat belts G
Warning!
USE SEAT BELTS PROPERLY
R Seat belts can only protect when used
properly.

Never wear seat belts in any other
way than as described in this section, as
that could result in serious injuries in case
of an accident.
R Each occupant should wear their seat belt
at all times, because seat belts help reduce
the likelihood of and potential severity of
injuries in accidents, including rollovers.
The integrated restraint system includes
SRS (driver front air bag, driver side knee
bag, front passenger front air bag, side
impact air bags, window curtain air bags for
door windows), Emergency Tensioning
Devices (ETDs), seat belt force limiters, and
front seat knee bolsters.
The system is designed to enhance the
protection offered to properly belted
occupants in certain frontal (front air bags,
driver’s side knee bag, and ETDs) and side
(side impact air bags, window curtain air
bags, and ETDs) impacts which exceed
preset deployment thresholds and in
certain rollovers (window curtain air bags
and ETDs).
R Never wear the shoulder belt under your
arm, against your neck or off your shoulder.
In a frontal crash, your body would move
too far forward. That would increase the
chance of head and neck injuries. The seat
belt would also apply too much force to the
ribs or abdomen, which could severely
injure internal organs such as your liver or
spleen.
Adjust the seat belt so that the shoulder
section is located as close as possible to
the middle of the shoulder. It should not
touch the neck. Never pass the shoulder
portion of the seat belt under your arm. For
this purpose, you can adjust the height of
the seat belt outlet. 46
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The PRE-SAFE
®
system takes preventive
measures to better protect the occupants
from
the possibility of personal injuries in the
following hazardous situations:
R emergency braking situations, e.g. if the
Brake Assist System (BAS) ( Y page 59) is
activated
R critical dynamic driving situations, e.g.
when the vehicle has been caused to
understeer or oversteer because it has
exceeded its physical limitations or in case
of evasive steering maneuvers at speeds
above approximately 85 mph (140 km/h)
The PRE-SAFE ®
system takes the following
measures when it is activated:
R The front seat belts are pre-tensioned
automatically.
R If the front passenger seat is in an
unfavorable position, the seat will be
adjusted to a position that seeks to better
protect the occupant.
R If the vehicle is in a critical dynamic driving
situation, the door windows and the tilt/
sliding sunroof also closes, except for a
minimal gap that remains open.
If the closing procedure of any of these
elements is blocked, it will stop and open
slightly.
Once the hazardous situation no longer exists
and an accident has been avoided, the seat
belt pre-tensioning is deactivated. All of the
PRE-SAFE ®
system settings can be re-
adjusted following the critical driving event.
If the seat belts do not release:
X Adjust the seat backrest or seat slightly to
the rear until the seat belt tension is
reduced.
The locking mechanism releases.
! When moving the seats, make sure there
are no items in the footwell or behind the
seats. Otherwise, you could damage the
seats and/or the items. NECK-PRO active front head
restraints
The NECK-PRO active front head restraints
are intended to offer the driver and front
passenger increased protection from
whiplash-type injuries. In the event of a rear-
end
collision, the NECK-PRO active front head
restraints on the front seats are designed to
move forward in the direction of travel. They
thus provide the head with increased support
earlier on in the collision sequence. The
NECK-PRO active front head restraints will
move forward whether the seats are occupied
or not. G
Warning!
Do not attach any objects (e.g. hangers) to the
head restraint posts. Otherwise, the NECK-
PRO active front head restraints may not be
able

to function properly or offer the intended
degree of protection they were designed for
in the event of a rear-end collision. G
Warning!
Only use seat or head restraint covers which
have
been tested and approved by Mercedes-
Benz for your vehicle model.
Using other seat or head restraint covers may
interfere with or prevent the activation of the
NECK-PRO active front head restraints and/
or the deployment of the front side impact air
bags.
Contact an authorized Mercedes-Benz Center
for availability.
When the NECK-PRO active front head
restraints have been triggered in an accident,
the NECK-PRO active front head restraints
must be reset. Otherwise, the NECK-PRO
active front head restraints cannot offer any
additional protection in the event of another
rear-end collision.
For information on resetting the activated
NECK-PRO active front head restraints, see
“Resetting activated head restraints”
(Y page 264). 50
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Information sign
: indicates the position of
anchor ;.
X Fold the upholstery blend upward to access
anchors ;.
X Install a LATCH-type (ISOFIX) child seat
according to the manufacturer’s
instructions.
A rigid connection between the child seat
and the body of the vehicle is established.
Child safety Child safety locks
G
Observe Safety notes, see page 52. G
Warning!
Children could open a rear door from the
inside. This may cause serious personal injury
or an accident. Therefore, secure the rear
doors with the child safety locks whenever
children are riding in the back seats of the
vehicle.
The child safety locks on the rear doors
enable you to secure each rear door
individually. You cannot open a secured rear
door from the inside. You can open the rear
door from the outside when the vehicle is
unlocked. X
Securing: Press the lever up in direction of
arrow :.
X Check to make sure the child safety locks
are working properly.
X Releasing: Press the lever down in
direction of arrow ;.
Override switch G
Observe Safety notes, see page 52.
You can disable the rear door window
operation and the 12V power outlet in the
rear center console for added safety. This can
be useful, for instance, when you have
children riding in the rear passenger
compartment. G
Warning!
Activate the override switch when children
are riding in the back seats of the vehicle. The
children may otherwise injure themselves,
e.g. by becoming trapped in the rear door
window opening. 56
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X
Activating: Press override switch :.
Indicator lamp ; comes on.
The functions in the rear are disabled.
You can still operate the rear door windows
using the switches located on the door
control panel of the driver’s door.
X Deactivating: Press override switch :
again.
Indicator lamp ; goes out.
The functions in the rear are enabled again.
For more information on power windows, see
the “Controls in detail” section
(Y page 94). Panic alarm
Example illustration: SmartKey with KEYLESS-GO
X
Activating: Press and hold !
button : for at least 1 second.
An audible alarm and flashing exterior
lamps will operate.
X Deactivating: Press ! button : again.
or
X Insert the SmartKey into the starter switch.
or
X Press the KEYLESS-GO start/stop button.
The SmartKey with KEYLESS-GO must be
inside the vehicle. i
USA only:
This device complies with Part 15 of the
FCC Rules. Operation is subject to the
following two conditions:
1. This device may not cause harmful interference, and
2. this device must accept any interference received, including
interference that may cause undesired
operation.
Any unauthorized modification to this
device could void the user’s authority to
operate the equipment.
i Canada only:
This device complies with RSS-210 of
Industry Canada. Operation is subject to
the following two conditions:
1. This device may not cause interference, and
2. this device must accept any interference received, including
interference that may cause undesired
operation of the device.
Any unauthorized modification to this
device could void the user’s authority to
operate the equipment. Driving safety systems
Introduction
This section contains information about the
following driving safety systems:
R ABS ( Antilock Brake System)
R Adaptive Brake
R BAS ( Brake Assist System)
R EBP ( Electronic Brake Proportioning)
R ESP ®
( Electronic Stability Program)
i In winter operation, the maximum
effectiveness of most of the driving
systems described in this section is only Driving safety systems
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Vehicle equipment ..............................
66
Locking and unlocking .......................66
Starter switch positions ..................... 76
Seats .................................................... 77
Multifunction steering wheel .............82
Mirrors ................................................. 84
Memory function ................................. 85
Lighting ................................................ 86
Wipers .................................................. 92
Power windows ................................... 94
Driving and parking ............................ 96
Automatic transmission ................... 101
Instrument cluster ............................108
Control system .................................. 110
Driving systems ................................ 127
Climate control system ....................143
Rear window defroster ..................... 151
Power tilt/sliding sunroof ...............152
Loading and storing ..........................154
Useful features ................................. 160 65Controls in detail
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Vehicle equipment
i This Operator’s Manual describes all
features, standard or optional, potentially
available for your vehicle at the time of
purchase. Please be aware that your
vehicle might not be equipped with all
features described in this manual. Locking and unlocking
Notes
G
Observe Safety notes, see page 52.
When unlocking or locking the vehicle with
the SmartKey an acoustic signal sounds. The
acoustic signal is activated at the factory. If
you wish to deactivate the feature, or adjust
its signal volume, contact an authorized
Mercedes-Benz Center.
When unlocking the vehicle, all turn signal
lamps flash once. An acoustic signal sounds
once, and the locking knobs in the doors
move up. The anti-theft alarm system is
disarmed.
When locking the vehicle, all turn signal lamps
flash three times. An acoustic signal sounds
three times, and the locking knobs in the
doors move down. The anti-theft alarm
system is armed.
All doors and the trunk must be closed.
If you cannot lock or unlock the vehicle with
the SmartKey, the batteries in the SmartKey
are discharged, the SmartKey is
malfunctioning, or the vehicle battery is
drained.
X Check the batteries in the SmartKey
(Y page 69) and replace them if
necessary.
X Use the mechanical key to unlock the
driver’s door and the trunk (Y page 261). X
Use the mechanical key to lock the vehicle
(Y page 262).
X Have the vehicle battery and the vehicle
battery connections checked at an
authorized Mercedes-Benz Center.
If the SmartKey is malfunctioning, contact
Roadside Assistance or an authorized
Mercedes-Benz Center. SmartKey
Your vehicle comes supplied with two
SmartKeys, each with remote control and a
removable mechanical key.
The SmartKey centrally locks and unlocks
R the doors
R the trunk lid
R the fuel filler flap Example illustration: SmartKey with KEYLESS-GO
: &
Lock button
; F Unlock button for trunk lid
= % Unlock button
When you open a door, the door window on
that side lowers slightly. Once you close the
door, the door window moves up again.
! A door window will not work if it is blocked
with ice or if the vehicle battery is
discharged. If you cannot shut a door, do
not force it or you could damage the door
or the door window. Fix whatever is
affecting the window before trying to shut
the door. 66
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