2016 MERCEDES-BENZ CLS ignition

Head restraints
Adjusting ........................................ .9 6
Adjusting (electrically) ..................... 96
Adjusting (rear) ................................ 96
Installing/removing (rear) ................ 97
Luxury .............................................. 96
see NECK-PRO head restraints
see NECK-PRO luxury head restraints
Headlamps
Cleaning system (notes) ................ 335
Fogging up .................................... .1 10
see Automatic headlamp mode
Heating
see Climate control
High beam flasher ............................ .1 08
High-beam headlamps
Adaptive Highbeam Assist ............. 109
Display message ............................ 221
Switching on/off ........................... 108
Hill start assist .................................. 130
HOLD function
Activating ....................................... 165
Deactivating ................................... 165
Display message ............................ 225
Function/notes ............................ .1 64
Home address
see also Digital Operator's Man-
ual ................................................. .2 45
Hood
Closing .......................................... .2 75
Display message ............................ 233
Important safety notes .................. 274
Opening ......................................... 274
Horn ...................................................... 33
Hydroplaning ..................................... 152
I
Ignition lock
see Key positions
Immobilizer .......................................... 74
Indicator and warning lamps
COLLISION PREVENTION ASSIST
PLUS .............................................. 243
Indicator lamps
see Warning and indicator lamps
Indicators
see Turn signals Instrument cluster
Overview .......................................... 34
Settings ......................................... 205
Warning and indicator lamps ........... 34
Instrument cluster lighting .............. 206
Interior lighting
Automatic control .......................... 111
Delayed switch-off (on-board
computer) ...................................... 207
Overview ........................................ 110
Reading lamp ................................. 110
Setting the brightness of the
ambient lighting (on-board com-
puter) ............................................. 206
Setting the brightness of the dis-
play/switch (on-board computer) .. 206
Setting the color of the ambient
lighting (on-board computer) ......... 207
iPod ®
see also Digital Operator's Man-
ual ................................................. .2 45
J Jack
Storage location ............................ 286
Using ............................................. 322
Jump starting (engine) ..................... .2 94
K
Key positions
KEYLESS-GO .................................. 127
SmartKey ....................................... 127
KEYLESS-GO
Convenience closing feature ............ 88
Deactivation ..................................... 76
Display message ............................ 234
Locking ............................................ 76
Removing the Start/Stop button ... 128
Start/Stop button .......................... 127
Starting the engine ........................ 129
Unlocking ......................................... 76
Kickdown
Driving tips ................................... .1 38
Manual drive program .................... 142
Knee bag .............................................. 47 Index 11

Service menu (on-board com-
puter) .................................................. 205
Service message
see ASSYST PLUS
Service products
Brake fluid .................................... .3 34
Coolant (engine) ............................ 334
Engine oil ....................................... 333
Fuel ................................................ 332
Important safety notes .................. 331
Refrigerant (air-conditioning sys-
tem) ............................................... 335
Washer fluid ................................... 335
Setting the air distribution .............. .1 21
Setting the airflow ............................ 122
Setting the date/time format
see also Digital Operator's Man-
ual ................................................. .2 45
Setting the language
see also Digital Operator's Man-
ual ................................................. .2 45
Setting the time
see also Digital Operator's Man-
ual ................................................. .2 45
Settings
Factory (on-board computer) ......... 209
On-board computer ....................... 205
SETUP (on-board computer) ............. 209
Side impact air bag ............................ .4 8
Side marker lamp (display mes-
sage) ................................................... 221
Side windows
Cleaning ......................................... 281
Convenience closing feature ............ 88
Convenience opening feature ......... .8 8
Important safety information ........... 86
Opening/closing .............................. 87
Problem (malfunction) .................... .9 0
Resettin g ........................................ .8 9
Reversin g feature ............................ .8 7
SIRIUS services
see also Digital Operator's Man-
ual ................................. ................. 245
Sliding sunroof
Important safet y
notes .................... 90
Opening/closing .............................. 91
Problem (malfunction) ..................... 93 Resetting ......................................... 91
SmartKey
Changing the battery ....................... 79
Changing the programming ............ .7 7
Checking the battery ...................... .7 9
Convenience closing feature ............ 88
Convenience opening feature .......... 88
Dis play message ............................ 234
Door central locking/unlocking ...... .7 6
Important safety notes .................... 76
Loss ................................................ .8 0
Mechanical key ................................ 78
Overview .......................................... 76
Positions (ignition lock) ................. 127
Problem (malfunction) ..................... 80
Starting the engine ........................ 129
SMS
see also Digital Operator's Man-
ual .................................................. 245
Snow chains ...................................... 303
Sockets
Center console .............................. 262
General notes ................................ 262
Rear compartment ........................ .2 63
Sound
Switching on/off ........................... 246
Spare wheel
Stowing .......................................... 327
Special seat belt retractor .................. 59
Specialist workshop ............................ 29
Speed, controlling
see Cruise control
Speedometer
Digital ............................................ 199
In the Instru ment cluster ................. 34
Segments ...................................... 196
Selecting the display unit .............. .2 05
SPORT handling mode
Deactivating/activating
(Mercedes-AMG vehicles) ................ 71
Warning lamp ................................. 240
Standing lamps
Display message ............................ 221
Switching on/off ........................... 108
Start/stop function
see ECO start/stop function
Starting (engine) ................................ 128Index 17

Panic alarm X
To activate: press the 3 button C for
approximately one second.
A visual and audible alarm is triggered if the
alarm system is armed. X
To deactivate: press the 3 button C
again.
or X
Insert the SmartKey into the ignition lock.
or, on vehicles with KEYLESS ‑ GO:X
Press the Start/Stop button.
The SmartKey must be in the vehicle.
Occupant safety
Introduction to the restraint system The restraint system can reduce the risk of vehi-
cle occupants coming into contact with parts of
the vehicle's interior in the event of an accident.
Furthermore, the restraint system may also
reduce the forces exerted on the vehicle occu-
pants when an accident occurs.
The restraint system includes: R
Seat belt system R
Air bags R
Child restraint system R
Child seat securing system
The components of the restraint system work in
conjunction with each other. They can only offer
the intended level of protection if all vehicle
occupants: R
are correctly wearing their seat belts.
( Y
page 44) R
adjust their seat and head restraint properly
( Y
page 94). The driver is also responsible for ensuring that
the steering wheel has been correctly posi-
tioned. Observe the information relating to the
correct driver's seat position ( Y
page 94).
Always ensure the air bag can inflate properly if
deployed ( Y
page 46).
An air bag supplements a correctly fastened
seat belt. As an additional safety device, the air
bag increases the level of protection for vehicle
occupants in the event of an accident. For exam-
ple, if the protection already provided by a cor-
rectly fastened seat belt will suffice, the air bags
are not deployed. Furthermore, only the air bags
that would increase the degree of protection
afforded to the vehicle occupants in the event of
an accident are deployed. Seat belts and air
bags generally do not protect against objects
penetrating the vehicle from the outside.
Information on restraint system operation can
be found under "Triggering of Emergency Ten-
sioning Devices and air bags" ( Y
page 53).
See “Children in the vehicle” for information on
children traveling with you as well as vehicle
restraint systems ( Y
page 58).
Important safety notes
G WARNING
Modifications to the restraint system may
cause it to no longer work as intended. The
restraint system may then not perform its
intended protective function and may fail in an
accident or trigger unexpectedly, for example.
This poses an increased risk of injury or even
fatal injury.
Never modify parts of the restraint system.
Never tamper with the wiring, the electronic
components or their software.
If it is necessary to modify an air bag system to
accommodate a person with disabilities, con-
tact an authorized Mercedes-Benz Center for
details. USA only: for further information con-
tact our Customer Assistance Center at
1-800-FOR-MERCedes (1 ‑ 800 ‑ 367 ‑ 6372).
Restraint system warning lamp
The functions of the restraint system are
checked after the ignition is switched on and atOccupant safety 41
Safety Z

regular intervals while the engine is running.
Therefore, malfunctions can be detected in
good time.
The u restraint system warning lamp in the
instrument cluster lights up when the ignition is
switched on. It goes out no later than a few sec-
onds after the vehicle is started. The compo-
nents of the restraint system are in operational
readiness.
A malfunction has occurred if the u restraint
system warning lamp: R
does not light up after the ignition is switched
on R
does not go out after a few seconds with the
engine running R
lights up again while the engine is running
G WARNING
If restraint system is malfunctioning, restraint
system components may be triggered unin-
tentionally or might not be triggered at all in
the event of an accident with a high rate of
vehicle deceleration. This can affect the Emer-
gency Tensioning Device or air bag, for exam-
ple. This poses an increased risk of injury or
even fatal injury.
Have the restraint system checked and
repaired in a qualified specialist workshop as
soon as possible.
PASSENGER AIR BAG OFF indicator
lamp
PASSENGER AIR BAG OFF indicator lamp C is
part of the Occupant Classification System
(OCS). The PASSENGER AIR BAG OFF indicator lamp
informs you about the status of the front-
passenger front air bag.
If the PASSENGER AIR BAG OFF indicator
lamp: R
is lit : the front-passenger front air bag is
deactivated. It will then not be deployed in the
event of an accident. R
is not lit : the front-passenger front air bag is
enabled. If, in the event of an accident, all
deployment criteria are met, the front-
passenger front air bag is deployed.
Depending on the person in the front-passenger
seat, the front-passenger front air bag must
either be deactivated or enabled; see the fol-
lowing points. You must make sure of this both
before and during a journey. R
Children in a child restraint system:
whether the front-passenger front air bag is
enabled or deactivated depends on the instal-
led child restraint system, and the age and
size of the child. Therefore, be sure to observe
the notes on the "Occupant Classification
System (OCS)" ( Y
page 49) and on "Chil-
dren in the vehicle" ( Y
page 58). There you
will also find instructions on rearward and
forward-facing child restraint systems on the
front-passenger seat. R
All other persons: depending on the classi-
fication of the person in the front-passenger
seat, the front-passenger front air bag is ena-
bled or deactivated ( Y
page 49). Be sure to
observe the notes on "Seat
belts“ ( Y
page 42) and "Air bags"
( Y
page 46). There you can also find infor-
mation on the correct seat position.
Seat belts
Introduction Seat belts are the most effective means of
restricting the movement of vehicle occupants
in the event of an accident or the vehicle rolling
over. This reduces the risk of vehicle occupants
coming into contact with parts of the vehicle
interior or being ejected from the vehicle. Fur-
thermore, the seat belt helps to keep the vehicle
occupant in the best position in relation to the
air bag.42
Occupant safety
Safety

PASSENGER AIRBAG OFF indicator lamp C
indicates whether the front-passenger front air
bag is disabled. X
Turn the SmartKey to position 1 or 2 in the
ignition lock, or in vehicles with KEYLESS-GO,
press the start/stop button once or twice.
The system carries out a self-diagnosis test.
The PASSENGER AIR BAG OFF indicator lamp
must light up for about six seconds.
The PASSENGER AIR BAG OFF indicator lamp
then shows the status of the front-passenger
front air bag. If the status of the front-passenger
front air bag changes whilst the vehicle is in
motion, an air bag display message may appear
in the instrument cluster ( Y
page 219). Always
observe the PASSENGER AIR BAG OFF indicator
lamp when the front-passenger seat is occu-
pied. Make sure that the status of the front-
passenger front air bag is correct before and
during a journey.
If the PASSENGER AIRBAG OFF indicator
lamp: R
lights up , the front-passenger front air bag is
disabled. It will then not be deployed in the
event of an accident. R
does not light up , the front-passenger front
air bag is enabled. If, in the case of an acci-
dent, all deployment criteria are met, the
front-passenger front air bag is deployed.
G WARNING
If the PASSENGER AIR BAG OFF indicator
lamp is lit, the front-passenger front air bag is
disabled. It will not be deployed in the event of
an accident and cannot perform its intended
protective function. A person in the front-
passenger seat could then, for example, come
into contact with the vehicle's interior, espe-
cially if the person is sitting too close to the
dashboard. This poses an increased risk of
injury or even fatal injury.
When the front-passenger seat is occupied,
always ensure that: R
the classification of the person in the front-
passenger seat is correct and the front-
passenger front air bag is enabled or disa- bled in accordance with the person in the
front-passenger seat R
the front-passenger seat has been moved
back as far back as possible. R
the person is seated correctly.
Make sure, both before and during the jour-
ney, that the status of the front-passenger
front air bag is correct.
G WARNING
If you secure a child in a child restraint system
on the front-passenger seat and the
PASSENGER AIR BAG OFF indicator lamp is
off, the front-passenger front air bag can
deploy in the event of an accident. The child
could be struck by the air bag. This poses an
increased risk of injury or even fatal injury.
Make sure that the front-passenger front air
bag has been disabled. The PASSENGER AIR
BAG OFF indicator lamp must be lit.
G WARNING
If you secure a child in a forward-facing child
restraint system on the front-passenger seat
and you position the front-passenger seat too
close to the dashboard, the child could, in the
event of an accident: R
come into contact with the vehicle's inte-
rior if the PASSENGER AIR BAG OFF indi-
cator lamp is lit, for example R
be struck by the air bag if the PASSENGER
AIR BAG OFF indicator lamp is off
This poses an increased risk of injury or even
fatal injury.
Move the front-passenger seat as far back as
possible. Always make sure that the shoulder
belt strap is correctly routed from the vehicle
belt sash guide to the shoulder belt guide on
the child restraint system. The shoulder belt
strap must be routed forwards and down-
wards from the vehicle belt sash guide. If nec-
essary, adjust the vehicle belt sash guide and
the front-passenger seat accordingly. Always
observe the child restraint system manufac-
turer's installation instructions.50
Occupant safety
Safety

Have the vehicle towed to a qualified special-
ist workshop in order to have a deployed air
bag replaced.
It is important for your safety and that of your
passenger to have deployed air bags replaced
and to have any malfunctioning air bags
repaired. This will help to make sure the air bags
continue to perform their protective function for
the vehicle occupants in the event of a crash.
G WARNING
Pyrotechnic Emergency Tensioning Devices
that have been deployed are no longer opera-
tional and are unable to perform their inten-
ded protective function. This poses an
increased risk of injury or even fatal injury.
Therefore, have pyrotechnic Emergency Ten-
sioning Devices which have been triggered
immediately replaced at a qualified specialist
workshop.
An electric motor is used by PRE-SAFE ®
to trig-
ger the tightening of the seat belt in hazardous
situations. This procedure is reversible.
If Emergency Tensioning Devices are triggered
or air bags are deployed, you will hear a bang,
and a small amount of powder may also be
released. The u restraint system warning
lamp lights up.
Only in rare cases will the bang affect your hear-
ing. The powder that is released generally does
not constitute a health hazard, but it may cause
short-term breathing difficulties in people with
asthma or other respiratory problems. Provided
it is safe to do so, you should leave the vehicle
immediately or open the window in order to pre-
vent breathing difficulties.
Air bags and pyrotechnic Emergency Tensioning
Devices (ETDs) contain perchlorate material,
which may require special handling and regard
for the environment. National guidelines must
be observed during disposal. In California, see
www.dtsc.ca.gov/HazardousWaste/
Perchlorate/index.cfm . Method of operation During the first stage of a collision, the restraint
system control unit evaluates important physi-
cal data relating to vehicle deceleration or accel-
eration, such as: R
duration R
direction R
intensity
Based on the evaluation of this data, the
restraint system control unit triggers the Emer-
gency Tensioning Devices during a frontal or
rear collision.
An Emergency Tensioning Device can only be
triggered, if: R
the ignition is switched on R
the components of the restraint system are
operational. You can find further information
under: "Restraint system warning lamp"
( Y
page 41) R
the belt tongue is engaged in the buckle on
the respective front-passenger seat
The Emergency Tensioning Devices in the rear
compartment are triggered independently of the
lock status of the seat belts.
If the restraint system control unit detects a
more severe accident, further components of
the restraint system are activated independ-
ently of each other in certain frontal collision
situations: R
Front air bags and driver's knee bag R
Window curtain air bag, if the system deter-
mines that deployment can offer additional
protection to that provided by the seat belt
The front-passenger front air bag is activated or
deactivated depending on the person on the
front-passenger seat. The front-passenger front
air bag can only deploy in an accident if the
PASSENGER AIR BAG OFF indicator lamp is off.
Observe the information on the PASSENGER AIR
BAG OFF indicator lamp ( Y
page 42).
Your vehicle has two-stage front air bags. During
the fi rst deployment stage, the front air bag is
fi
lled with propellant gas to reduce the risk of
injuries. The front air bag is fully deployed with
the maximum amount of propellant gas if a sec-
ond deployment threshold is reached within a
few milliseconds.
The activation threshold of the Emergency Ten-
sioning Devices and the air bag are determined
by evaluating the rate of vehicle deceleration or
acceleration which occurs at various points in54
Occupant safety
Safety

Never leave animals unattended in the vehi-
cle. Always secure animals properly during
the journey, e.g. use a suitable animal trans-
port box.
Driving safety systems
Overview of driving safety systems In this section, you will find information about
the following driving safety systems: R
ABS ( A nti-lock B raking S ystem)
( Y
page 64)R
BAS ( B rake A ssist S ystem) ( Y
page 65)R
BAS PLUS ( B rake A ssist S ystem PLUS) with
Cross-Traffic Assist ( Y
page 65)R
COLLISION PREVENTION ASSIST PLUS
( Y
page 67)R
ESP ®
( E lectronic S tability P rogram)
( Y
page 69)R
EBD ( E lectronic B rake force D istribution)
( Y
page 72)R
ADAPTIVE BRAKE ( Y
page 72)R
PRE-SAFE ®
Brake ( Y
page 73)
Important safety notes If you fail to adapt your driving style or if you are
inattentive, the driving safety systems can nei-
ther reduce the risk of an accident nor override
the laws of physics. Driving safety systems are
merely aids designed to assist driving. You are
responsible for maintaining the distance to the
vehicle in front, for vehicle speed, for braking in
good time, and for staying in lane. Always adapt
your driving style to suit the prevailing road and
weather conditions and maintain a safe distance
from the vehicle in front. Drive carefully.
The driving safety systems described only work
as effectively as possible when there is ade-
quate contact between the tires and the road
surface. Please pay special attention to the
notes on tires, recommended minimum tire
tread depths, etc. ( Y
page 301).
In wintry driving conditions, always use winter
tires (M+S tires) and if necessary, snow chains.
Only in this way will the driving safety systems
described in this section work as effectively as
possible. ABS (Anti-lock Braking System)
General information ABS regulates brake pressure in such a way that
the wheels do not lock when you brake. This
allows you to continue steering the vehicle when
braking.
The % ABS warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goes out when the engine is running.
ABS works from a speed of about 5 mph
(8 km/h), regardless of road-surface conditions.
ABS works on slippery surfaces, even when you
only brake gently.
Important safety notes
i Observe the "Important safety notes" sec-
tion ( Y
page 64).
G WARNING
If ABS is faulty, the wheels could lock when
braking. The steerability and braking charac-
teristics may be severely impaired. Addition-
ally, further driving safety systems are deac-
tivated. There is an increased danger of skid-
ding and accidents.
Drive on carefully. Have ABS checked imme-
diately at a qualified specialist workshop.
When ABS is malfunctioning, other systems,
including driving safety systems, will also
become inoperative. Observe the information
on the ABS warning lamp ( Y
page 238) and dis-
play messages which may be shown in the
instrument cluster ( Y
page 213).
Braking X
If ABS intervenes: continue to depress the
brake pedal vigorously until the braking sit-
uation is over. X
To make a full brake application: depress
the brake pedal with full force.
If ABS intervenes when braking, you will feel a
pulsing in the brake pedal.
The pulsating brake pedal can be an indication
of hazardous road conditions, and functions as a
reminder to take extra care while driving.64
Driving safety systems
Safety

X
To activate with the SmartKey: remove the
SmartKey from the ignition lock. X
To activate with KEYLESS-GO: switch the
ignition off and open the driver's door. X
To deactivate: switch on the ignition.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Anyone
can start the engine if a valid SmartKey has been
left inside the vehicle.
i The immobilizer is always deactivated when
you start the engine.
In the event that the engine cannot be started
(yet the vehicle's battery is charged), the sys-
tem is not operational. Contact an authorized
Mercedes-Benz Center or call
1-800-FOR-MERCedes (in the USA) or
1-800-387-0100 (in Canada).
ATA (anti-theft alarm system)
X
To arm: lock the vehicle with the SmartKey or
KEYLESS-GO.
Indicator lamp C flashes. The alarm system
is armed after approximately 15 seconds. X
To deactivate: unlock the vehicle with the
SmartKey or KEYLESS-GO.
or X
Insert the SmartKey into the ignition lock.
A visual and audible alarm is triggered if the
alarm system is armed and you open: R
a door R
the vehicle with the mechanical key R
the trunk lid R
the hood X
To switch the alarm off with the Smart-
Key: press the 6 or 7 button on the
SmartKey.
The alarm is switched off.
or X
Remove the Start/Stop button from the igni-
tion lock. X
Insert the SmartKey into the ignition lock.
The alarm is switched off. X
To stop the alarm using KEYLESS-GO:
grasp the outside door handle. The SmartKey
must be outside the vehicle.
The alarm is switched off.
or X
Press the Start/Stop button on the dash-
board. The SmartKey must be inside the vehi-
cle.
The alarm is switched off.
The alarm is not switched off, even if you close
the open door that triggered it, for example.
i If the alarm continues for more than
30 seconds, the mbrace emergency call sys-
tem automatically notifies the Customer
Assistance Center. This is done either by text
message or data connection.
The emergency call system sends the mes-
sage or data provi ded that: R
you have subscribed to the mbrace service. R
the mbrace service has been activated
properly. R
the necessary mobile phone network is
available.Protection against theft 75
Safety Z