warning lights MERCEDES-BENZ CLS 2016 Owners Manual

BAS PLUS with Cross-Traffic Assist
(Brake Assist PLUS with Cross-
Traffic Assist)
Important safety notes .................... 65
Battery (SmartKey)
Checking .......................................... 79
Important safety notes .................... 78
Replacing ......................................... 79
Battery (vehicle)
Charging ........................................ 293
Display message ............................ 223
Important safety notes .................. 291
Jump starting ................................. 294
Belt
see Seat belts
Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 205
Display message ............................ 226
Notes/function .............................. 187
see Active Blind Spot Assist
Bluetooth ®
Connecting another mobile
phone ............................................ 250
Searching for a mobile phone ........ 249
see also Digital Operator's Man-
ual .................................................. 245
Telephony ...................................... 248
Box (trunk) ......................................... 255
Brake Assist
see BAS (Brake Assist System)
Brake fluid
Display message ............................ 215
Notes ............................................. 334
Brake force distribution
see EBD (electronic brake force
distribution)
Brake lamps
Display message ............................ 221
Brakes
ABS .................................................. 64
Adaptive Brake Assist ...................... 68
BAS .................................................. 65
BAS PLUS with Cross-Traffic
Assist ............................................... 65
Brake fluid (notes) ......................... 334
Display message ............................ 213
High-performance brake system .... 151 HOLD function ............................... 164
Important safety notes .................. 150
Maintenance .................................. 151
Parking brake ................................ 147
Riding tips ...................................... 150
Warning lamp ................................. 237
Breakdown
Where will I find...? ........................ 286
see Flat tire
see Towing away
Brightness control (instrument
cluster lighting) ................................... 34
C California
Important notice for retail cus-
tomers and lessees .......................... 26
Calling up a malfunction
see Display messages
Car
see Vehicle
Care
360° camera ................................. 283
Car wash ........................................ 279
Carpets .......................................... 285
Display ........................................... 283
Exhaust pipe .................................. 283
Exterior lights ................................ 282
Gear or selector lever .................... 284
Interior ........................................... 283
Matte finish ................................... 281
Notes ............................................. 279
Paint .............................................. 280
Plastic trim .................................... 283
Power washer ................................ 280
Rear view camera .......................... 282
Roof lining ...................................... 285
Seat belt ........................................ 284
Seat cover ..................................... 284
Sensors ......................................... 282
Steering wheel ............................... 284
Trim pieces .................................... 284
Washing by hand ........................... 280
Wheels ........................................... 281
Windows ........................................ 281
Wiper blades .................................. 282
Wooden trim .................................. 284 Index 5

Convenience opening feature ............ 88
Coolant (engine)
Checking the level ........................ .2 76
Display message ............................ 222
Filling capacity ............................... 335
Important safety notes .................. 334
Temperature (on-board computer,
Mercedes-AMG vehicles) .............. .2 09
Temperature gauge ........................ 196
Warning lamp ................................. 241
Cooling
see Climate control
Copyright ............................................. 32
Cornering light function
Display message ............................ 221
Function/notes ............................ .1 09
Cruise control
Activation conditions ..................... 154
Cruise control lever ....................... 153
Deactivating ................................... 155
Display message ............................ 229
Driving system ............................... 153
Function/notes ............................ .1 53
Important safety notes .................. 153
Setting a speed .............................. 154
Storing and maintaining current
speed ............................................. 154
Cup holder
Center console .............................. 258
Center console in the rear com-
partment ........................................ 258
Important safety notes .................. 257
Rear compartment ......................... 258
Customer Assistance Center
(CAC) ..................................................... 29
Customer Relations Department ....... 29
D
Dashboard
see Instrument cluster
Data
see Technical data
Data carrier
Selecting ........................................ 201
Daytime running lamps
Display message ............................ 221
Function/notes ............................ .1 07 Switching on/off (on-board com-
puter) ............................................. 206
Declarations of conformity ................. 28
Delayed switch-off
Exterior lighting (on-board com-
puter) ............................................. 207
Interior lighting .............................. 207
Diagnostics connection ..................... .2 9
Digital Operator's Manua l
Help ................................................ .2 3
Introduction .................................... .2 3
Digital speedomete r ........................ .1 99
DIRECT SELECT lever
Automatic transmission ................. 135
Display messages
ASSYST PLUS ................................ 277
Calling up (on-board computer) ..... 212
Driving systems ............................ .2 24
Engine ............................................ 222
General notes ................................ 212
Hiding (on-board computer) ........... 212
KEYLESS-GO .................................. 234
Lights ............................................. 221
Safety systems .............................. 213
SmartKey ....................................... 234
Tires ............................................... 230
Vehicle .......................................... .2 32
Distance recorder ............................ .1 98
Distance warning (warning lamp) .... 243
Distance warning function
Function/notes ................................ 67
DISTRONIC PLUS
Activating ....................................... 157
Activation conditions ..................... 157
Deactivating ................................... 161
Display message ............................ 227
Displays in the multifunction dis-
play ................................................ 160
Function/note s ............................. 155
Imp o rtant safety notes .................. 156
Setting the specified minimum
distance ......................................... 159
Stopping ........................................ 159
Doors
Automatic locking (on-board com-
puter) ............................................. 207
Automatic locking (switch) ............... 82 Index 7

Warning lamp ................................. 238
ETS/4ETS (Electronic Traction Sys-
tem) ...................................................... 69
Exhaust check ................................... 149
Exhaust pipe (cleaning instruc-
tions) .................................................. 283
Exterior lighting
Setting options .............................. 107
see Lights
Exterior mirrors
Adjusting ....................................... 103
Dipping (automatic) ....................... 104
Folding in when locking (on-board
computer) ...................................... 208
Folding in/out (automatically) ...... .1 04
Folding in/out (electrically) ........... 104
Out of position (troubleshooting) ... 104
Setting .......................................... .1 04
Storing settings (memory func-
tion) ............................................... 105
Storing the parking position .......... 105
Eyeglasses compartment ................. 252
FFavorites
Overview ........................................ 247
Filler cap
see Refueling
Flat tire
MOExtended tires .......................... 287
Preparing the vehicle ..................... 287
TIREFIT kit ...................................... 288
see Emergency spare wheel
Floormats .......................................... .2 72
Frequencies
Mobile phone ................................. 329
Two-way radio ................................ 329
Fuel
Consumption statistics .................. 199
Displaying the current consump-
tion ................................................ 199
Displaying the range ..................... .1 99
Driving tips ................................... .1 49
Fuel gauge ....................................... 34
Grade (gasoline) ............................ 332
Important safety notes .................. 332
Problem (malfunction) ................... 146 Refueling ........................................ 143
Tank content/reserve fuel ............. 332
Fuel filler flap
Emergency release ........................ 145
Opening ......................................... 144
Fuel level
Calling up the range (on-board
computer) ...................................... 199
Fuel tank
Capacity ........................................ 332
Problem (malfunction) ................... 146
Fuse allocation chart (vehicle tool
kit) ...................................................... 286
Fuses
Allocation chart ............................ .2 99
Before changing ............................ .2 99
Fuse box in the engine compart-
ment .............................................. 300
Fuse box in the trunk ..................... 300
Important safety notes .................. 299
G Garage door opener
Clearing the memory ..................... 272
General notes ................................ 269
Important safety notes .................. 270
Opening/closing the garage door .. 272
Problems when programming ....... .2 72
Programming (button in the rear-
view mirror) ................................... 270
Synchronizing the rolling code ....... 271
Gasoline ............................................. 332
Gear indicator (on-board com-
puter, Mercedes-AMG vehicles) ....... 209
Genuine parts ...................................... 25
Glove box .......................................... .2 52
Google™ Local Search
see also Digital Operator's Man-
ual ................................................. .2 45
H
Handbrake
see Parking brake
Hazard warning lamps ..................... .1 09
Head bags
Display message ............................ 21810
Index

LLamps
see Warning and indicator lamps
Lane Keeping Assist
Activating/deactivating ................ .2 05
Display message ............................ 226
Function/information .................... 189
Lane Tracking package ..................... 187
Lap time (RACETIMER) ...................... 210
LATCH-type (ISOFIX) child seat
anchors ................................................ 60
License plate lamp (display mes-
sage) ................................................... 221
Light function, active
Display message ............................ 221
Light sensor (display message) ....... 221
Lights
Activating/deactivating the inte-
rior lighting delayed switch-off ....... 207
Adaptive Highbeam Assist ............. 109
Automatic headlamp mode ............ 107
Cornering light function ................. 109
Hazard warning lamps ................... 109
High beam flasher .......................... 108
High-beam headlamps ................... 108
Light switch ................................... 107
Low-beam headlamps .................... 108
Parking lamps ................................ 108
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
Standing lamps .............................. 108
Switching the daytime running
lamps on/off (on-board com-
puter) ............................................. 206
Switching the exterior lighting
delayed switch-off on/off (on-
board computer) ............................ 207
Switching the surround lighting
on/off (on-board computer) .......... 207
Turn signals ................................... 108
see Interior lighting
Loading guidelines ............................ 251 Locking
see Central locking
Locking (doors)
Automatic ........................................ 82
Emergency locking ........................... 83
From inside (centra l locking but-
to
n) .................................................. 82
Locking centrally
see Central locking
Locking verification signal (on-
board computer) ............................... 208
Low-beam headlamps
Display message ............................ 221
Switching on/off ........................... 108
Lumbar support
Adjusting the 4-way lumbar sup-
port .................................................. 98
Luxury head restraints ....................... 96
M M+S tires ............................................ 303
Malfunction message
see Display messages
Matte finish (cleaning instruc-
tions) .................................................. 281
mbrace
Call priority .................................... 266
Display message ............................ 215
Downloading destinations
(COMAND) ..................................... 266
Downloading routes ....................... 269
Emergency call .............................. 264
General notes ................................ 263
Geo fencing ................................... 269
Locating a stolen vehicle ............... 268
MB info call button ........................ 265
Remote fault diagnosis .................. 268
Remote vehicle locking .................. 268
Roadside Assistance button .......... 265
Search & Send ............................... 267
Self-test ......................................... 263
Speed alert .................................... 269
System .......................................... 263
Triggering the vehicle alarm ........... 269
Vehicle remote unlocking .............. 267
Mechanical key
Function/notes ................................ 7812
Index

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

If OCS detects that: R
the front-passenger seat is not occupied, the
PASSENGER AIR BAG OFF indicator lamp
lights up continuously after the system's self-
diagnosis test. This indicates that the front-
passenger front air bag is deactivated. R
the front-passenger seat is occupied by a
child aged up to twelve months in a standard
child restraint system, the PASSENGER AIR
BAG OFF indicator lamp lights up continu-
ously after the system's self-diagnosis test.
This indicates that the front-passenger front
air bag is deactivated.
In the case of a twelve-month-old child in a
standard child restraint system, the
PASSENGER AIR BAG OFF indicator lamp may
go out after the system's self-diagnosis test.
This indicates that the front-passenger front
air bag is activated. Categorization is depend-
ent on the type of child restraint system and
the stature of the child, for example. In this
case, always install the child restraint system
on a suitable rear seat. R
the front-passenger seat is occupied by a per-
son of smaller stature (e.g. a teenager or a
small adult), the PASSENGER AIR BAG OFF
indicator lamp lights up continuously or goes
off after the system's self-diagnosis test
depending on the categorization. -
If the PASSENGER AIR BAG OFF indicator
lamp is off, position the front-passenger
seat as far back as possible. Alternatively, a
person of smaller stature can sit on a rear
seat. -
If the PASSENGER AIR BAG OFF indicator
lamp lights up, a person of smaller stature
should not sit on the front-passenger seat. R
the front-passenger seat is occupied by an
adult or a person of an appropriate size, the
PASSENGER AIR BAG OFF indicator lamp
goes out after the system's self-diagnosis
test. This indicates that the front-passenger
front air bag is activated.
If children are traveling in the vehicle, be sure to
observe the notes on "Children in the vehicle"
( Y
page 58).
If the OCS is malfunctioning, both the red u
restraint system warning lamp in the instrument
cluster and the PASSENGER AIR BAG OFF indi-
cator lamp light up simultaneously. In this case,
the front-passenger air bag is deactivated and
does not deploy during an accident. Ha ve
the
system checked by qualified technicians as soon as possible. Consult an authorized
Mercedes-Benz Center. Only have the front-
passenger seat repaired at an authorized
Mercedes-Benz Center.
If the front-passenger seat, the seat cover or the
seat cushion are damaged, have the necessary
repair work carried out at an authorized
Mercedes-Benz Center.
For safety reasons, Mercedes-Benz recom-
mends that you only use seat accessories that
have been approved by Mercedes-Benz.
If the driver's air bag deploys, this does not
mean that the front-passenger front air bag will
also deploy. The Occupant Classification Sys-
tem (OCS) categorizes the occupant on the
front-passenger seat. Depending on the result,
the front-passenger air bag is activated or deac-
tivated.
System self-test
G DANGER
If the PASSENGER AIR BAG OFF indicator
lamp does not light up during the system self-
test, then the system is malfunctioning. The
front-passenger front air bag might be trig-
gered unintentionally or might not be trig-
gered at all in the event of an accident with
high deceleration. This poses an increased
risk of injury or even fatal injury.
In this case the front-passenger seat may not
be used. Do not install a child restraint system
on the front-passenger seat. Have the Occu-
pant Classification System (OCS) checked
and repaired immediately at a qualified spe-
cialist workshop.
G WARNING
If the PASSENGER AIR BAG OFF indicator
lamp remains lit after the system self-test, the
front-passenger front air bag is disabled. It will
not be deployed in the event of an accident. In
this case, the front-passenger front air bag
cannot perform its intended protective func-
tion, e.g. when a person is seated in the front-
passenger seat.
That person could, for example, come into
contact with the vehicle's interior, especially
if the person is sitting too close to the dash-Occupant safety 51
Safety Z

Problems with the Occupant Classification System (OCS) Be sure to observe the notes on "System self-test" ( Y
page 51).
Problem
Possible causes/consequences and P Solutions
The PASSENGER AIR
BAG OFF indicator lamp
lights up and remains lit,
even though the front-
passenger seat is occu-
pied by an adult or a per-
son of a stature corre-
sponding to that of an
adult. The classification of the person on the front-passenger seat is incor-
rect. X
Make sure the conditions for a correct classification of the person
on the front-passenger seat are met ( Y
page 49).X
If the PASSENGER AIR BAG OFF indicator lamp remains lit, the front-
passenger seat may not be used. X
Have OCS checked as soon as possible at an authorized Mercedes-
Benz Center.
The PASSENGER AIR
BAG OFF indicator lamp
does not light up and/or
does not stay on.
The front-passenger seat
is: R
unoccupied R
occupied with the
weight of a child up to
twelve months old in a
child restraint system OCS is malfunctioning. X
Make sure there is nothing between the seat cushion and the child
seat. X
Make sure that the entire base of the child restraint system rests on
the seat cushion of the front-passenger seat. The backrest of the
forward-facing child restraint system must lie as flat as possible
against the backrest of the front-passenger seat. If necessary,
adjust the position of the front-passenger seat. X
When installing the child restraint system, make sure that the seat
belt is tight. Do not pull the seat belt tight using the front-passenger
seat adjustment. This could result in the seat belt and the child
restraint system being pulled too tightly. X
Check for correct installation of the child restraint system.
Make sure that the head restraint does not apply a load to the child
restraint system. If necessary, adjust the head restraint accord-
ingly. X
Make sure that no objects are applying additional weight onto the
seat. X
If the PASSENGER AIR BAG OFF indicator lamp remains off, do not
install a child restraint system on the front-passenger seat. It is
recommended that you install the child restraint system on a suit-
able rear seat. X
Have OCS checked as soon as possible at an authorized Mercedes-
Benz Center.
Deployment of Emergency Tensioning
Devices and air bags
Important safety notes
G WARNING
The air bag parts are hot after an air bag has
been deployed. There is a risk of injury. Do not touch the air bag parts. Have a
deployed air bag replaced at a qualified spe-
cialist workshop as soon as possible.
G WARNING
A deployed air bag no longer offers any pro-
tection and cannot provide the intended pro-
tection in an accident. There is an increased
risk of injury.Occupant safety 53
Safety Z

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