2014 MERCEDES-BENZ CLS brake sensor

Parking brake................................169
Warning lamp ................................. 266
Breakdown
see Flat tire
see Towing away
Bulbs
see Changing bulbs
C
California
Important notice for retail
customers and lessees....................23
Calling upamalfunction
see Display messages
Care
Carpets..........................................318
Carwash........................................ 311
Display...........................................315
Exhaustpipe..................................315
Exterior lights................................314
Gearorselectorlever....................316
Interior...........................................315
Matte finish...................................313
NightView Assist Plus...................316
Notes.............................................311
Paint..............................................313
Plastic trim....................................316
Power washer................................312
Rearview camera..........................315
Rooflining ...................................... 318
Seat belt........................................317
Seat cover.....................................317
Sensors.........................................315
Steering wheel...............................316
Trim pieces....................................316
Washing by hand...........................312
Wheels...........................................314
Windows........................................314
Wiper blades..................................314
Wooden trim..................................316
Cargo tie downrings.........................282
Car wash (care).................................311
CD player/CD changer (on-board
computer)..........................................225
Center console
Lowersection..................................35
Lowersection (AMG vehicles)..........36
Uppersection..................................34
Central locking
Automatic locking (on-board
computer)......................................232
Locking/unlocking (SmartKey)........76
Changing bulbs
Important safety notes..................124
Overview of bulbtypes..................125
Reversing lamps............................125
Child-proof locks
Important safety notes....................64
Reardoors.......................................65
Children
In the vehicle...................................60
Restraint systems............................60
Specialseat belt retractor...............63
Child seat
LATCH-type(ISOFIX) childseat
anchors ............................................ 63
Top Tether.......................................64
Cigarette lighter................................288
Cleaning
Mirrorturn signal...........................314
Climate control
Automatic climate control (3-
zone) .............................................. 134
Controlling automatically...............137
Cooling with airdehumidification..136
Defrosting the windows.................140
Defrosting the windshield..............139
Dual-zone automatic climate
control...........................................131
Important safety notes..................130
Indicator lamp ................................ 137
Information about using dual-zone
automatic climate control..............132
Information on using 3-zone
automatic climate control..............135
Maximum cooling..........................139
Overview of systems......................130
Problems with cooling with air
dehumidification............................137
Problem with the rear window
defroster........................................141
Rearcontrol panel.........................134
6Index

Operator'sManual
Vehicle equipment...........................22
Outside temperature display...........220
Overhead control panel......................37
Override feature
Rearside windows...........................65
P
Paintcode number............................372
Paintwork (cleaning instructions)...313
Panicalarm..........................................40
Parking...............................................167
Important safety notes..................167
Parking brake................................169
Position of exteriormirror, front-
passenger side............................... 111
Rearview camera..........................199
see PARKTRONIC
Parking aid
Active Parking Assist.....................196
see Exterior mirrors
see PARKTRONIC
Parking brake
Display message............................240
Notes/function..............................169
Warning lamp ................................. 272
Parking lamps
Switching on/off...........................118
PARKTRONIC
Deactivating/activating.................195
Driving system...............................193
Function/notes.............................193
Important safety notes..................193
Problem (malfunction)...................196
Range of the sensors.....................194
Warning display.............................195
PASSAIRBAG OFF
seePASSENGER AIRBAGOFF
PASSENGER AIR BAG OFF
Indicatorlamp .................................. 47
Problems(malfunction) .................. 244
Plastic trim (cleaning instructions).316
Power washers..................................312
Power windows
see Side windows
PRE-SAFE®(anticipatory occupant
protection)
Display message............................241
Operation .........................................54
PRE-SAFE®Brake
Activating/deactivating.................228
Display message............................241
Function/notes ................................ 72
Warning lamp ................................. 275
Productinformation............................21
Program selector button..................159
Protection of the environment
General notes..................................21
Pulling away (automatic
transmission)..................................... 150
Q
Qualifiedspecialistworkshop...........26
R
RACESTART (AMG vehicles).............188
RACETIMER(on-board computer)....235
Radar sensor system
Activating/deactivating.................232
Display message............................252
Radio
Selectingastation.........................225
see separate operating instructions
Radio-based vehiclecomponents
Declarationofconformity................25
Readinglamp.....................................123
Rear compartment
Setting the airvents......................143
Rear fog lamp
Display message............................246
Rear seat (foldingthe backrest
forwards/back).................................281
Rear seats
Display message............................261
Rear viewcamera
Cleaning instructions.....................315
Function/notes.............................199
Switching on/off...........................200
Rear-viewmirror
Dipping (automatic).......................111
Rear window blind............................287
14Index

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

Genuine Mercedes-Benz parts
HEnvironmental note
DaimlerAGalso suppliesreconditioned major
assemblies and partswhichare of thesame
qualityasnew parts. They are covered by the
same LimitedWarrantyentitlements as new
parts.
!Air bags and EmergencyTensioning
Devices, as well as control unitsand
sensorsfor these restraint systems,may be
installedinthefollowingareas of your
vehicle:
Rdoors
Rdoor pillars
Rdoor sills
Rseats
Rcockpit
Rinstrumentcluster
Rcenterconsole
Do notinstall accessoriessuchasaudio
systemsintheseareas.Do not carry out
repairs or welding.You could impair the
operating efficiencyofthe restraint
systems.
Have aftermarket accessories installed at
aqualified specialist workshop.
You could jeopardize the operating safety of
your vehicle if you use parts, tires and wheels
as well as accessories relevant to safety
which have not been approved by Mercedes.
This could lead to malfunctions in safety-
relevant systems, e.g. the brake system. Use
only genuine Mercedes-Benz parts or parts of
equal quality. Only use tires, wheels and
accessories that have been specifically
approved for your vehicle.
Genuine Mercedes-Benz parts are subject to
strictqualitycontrol. Every part hasbeen
specifically developed,manufactured or
selected for and adapted to Mercedes-Benz
vehicles. Only genuine Mercedes-Benz parts
should therefore be used.
More than 300,000 different genuine
Mercedes-Benz parts are available for
Mercedes-Benz models.
All authorized Mercedes-Benz Centers
maintainasupply of genuine Mercedes-Benz
parts for necessary service and repair work.
In addition, strategically located parts
delivery centers provide quick and reliable
parts service.
Alwaysspecify the vehicle identification
number (VIN) (Ypage 372) and the engine
number (Ypage 373) when ordering genuine
Mercedes-Benz parts.
Operator's Manual
Vehicle equipment
This Operator's Manual describes all models
and all standard and optional equipment of
your vehicle available at the time of going to
print. Country-specific differences are
possible.Bear in mind that your vehicle may
not feature all functionsdescribed here. This
also applies to safety-relevant systems and
functions. The equipment in your vehicle may
therefore differ from that shown in the
descriptions and illustrations.
The original purchase agreement lists all
systems installed in your vehicle.
Should you have any questions concerning
equipment and operation,please consult an
authorized Mercedes-BenzCenter.
The Operator's Manual and Maintenance
Booklet are important documents and should
be kept in the vehicle.
22Introduction

totalavailablepropellant gas, thereby
reducing the risk of injury.Ifthe airbag
control unitrecognizeswithinafew
milliseconds thatthe vehicle is being braked
or accelerated faster than originally
predicted, the front air bag is filled with the
maximum amount of propellant gas available.
The deployment of the front-passenger front
air bag is also influenced by the weight
category of the front passenger, which is
determined by the Occupant Classification
System (OCS) (Ypage 47).
The lighter the passenger-side occupant, the
higher the vehicle deceleration rate required
(predicted at the start of the impact) for
second-stage inflation of the front-passenger
front air bag. In the second stage, the front
air bags are inflated with the maximum
amount of propellant gas available.
The front air bags are not deployed in
situations wherealow impact severity is
predicted. You will then be protected by the
fastened seat belt.
The front-passenger front air bag will only
deploy if:
Rthe system, based on the OCS weight
sensor readings, detectsthat the front-
passenger seat is occupied
Rthe PASSENGER AIR BAG OFF indicator
lamp on the center console is not lit
(Ypage 47)
Rthe air bag control unit predictsahigh
impact severity
Knee bags
Driver's knee bagdeploysunderneath the
steering column and front-passenger knee
bagunderneath the glove box. They
deploy together with the front air bags. They
are designed to operate together with the
front air bags in frontal impacts if certain
thresholds are exceeded. The knee bags
operate at best in conjunction with correctly
positioned and fastened seat belts.
Knee bags provide increased protection for
the driver and front passenger against the risk
of:
Rknee injuries
Rthigh injuries
Rlower leg injuries
Side impact air bags
GWARNING
Using unsuitable seat covers could restrict or
even prevent deployment of the air bags
integrated into the seats. Consequently, the
air bags cannot protect vehicle occupants as
they are designed to do. In addition, the
function of the air bag deactivation system
could be restricted. This poses an increased
risk of injury or even fatal injury.
You should only use seat covers that have
been approved for the respective seat by
Mercedes-Benz.
GWARNING
Sensors to control the air bags are located in
the doors. Modifications or work not
performed correctly to the doors or door
paneling, as well as damaged doors, can lead
to the function of the sensors being impaired.
The air bags might therefore not function
properly any more. Consequently, the air bags
cannot protect vehicle occupants as they are
designed to do. There is an increased risk of
injury.
Never modify the doors or parts of the doors.
Always have work on the doors or door
paneling carried out ataqualified specialist
workshop.
Occupant safety45
Safety
Z

ABS works fromaspeedof about5mph
(8 km/h)upwards,regardless of road-surface
conditions.ABS works on slippery surfaces,
evenifyou only brake gently.
The yellowABS warning lamp in the
instrument cluster lights up when the ignition
is switched on. It goes out when the engine is
running.
Braking
XIf ABS intervenes:continue to depress the
brake pedal vigorously until the braking
situation is over.
XTo makeafull brake application:
depress the brake pedal with full force.
If ABS intervenes when braking, you will feel
apulsing in the brake pedal.
The pulsating brake pedal can be an
indication of hazardous road conditions, and
functions asareminder to take extracare
while driving.
BAS (Brake Assist System)
iObserve the "Important safety notes"
section (Ypage 66).
GWARNING
If BAS is malfunctioning, the braking distance
in an emergencybraking situation is
increased. There isarisk of an accident.
In an emergencybraking situation, depress
the brake pedal with full force. ABS prevents
the wheels from locking.
BAS operates in emergencybraking
situations. If you depress the brake pedal
quickly, BAS automatically boosts the braking
force, thus shortening the stopping distance.
The brakes will function as usual once you
release the brake pedal. BAS is deactivated.
BAS PLUS (Brake Assist System
PLUS)
General information
iObserve the "Important safety notes"
section (Ypage 66).
BAS PLUS is only available in vehicles
equipped with DISTRONIC PLUS.
For BAS PLUS to assist you when driving, the
radar sensor system must be:
Ractivated (Ypage 232)
Roperational
With the help of the radar sensor system, BAS
PLUS can detect obstacles that are in the
path of your vehicle for an extended period of
time.
If the radar sensor system is malfunctioning,
BAS PLUS will not be available. The brake
system is still available with complete brake
boosting effect and BAS.
BAS PLUS provides braking assistance in
hazardous situations at speeds greater than
4mph (7 km/h).
At speeds of up to approximately 40 mph
(70 km/h),BAS PLUS can also react to
stationary objects. Examples of stationary
objectsare stopped or parked vehicles.
Important safety notes
GWARNING
BAS PLUS cannot alwaysclearly identify
objectsand complex traffic situations. BAS
PLUS cannot intervene in these cases. There
isarisk of an accident.
Always pay careful attention to the traffic
situation and be ready to brake.
GWARNING
BAS PLUS does not react:
Rto people or animals
Rto oncoming vehicles
Rto crossingtraffic
Rwhen cornering
Driving safety systems67
Safety
Z

Asaresult, BAS PLUS may not intervene in all
critical situations. There isarisk of an
accident.
Always pay careful attention to the traffic
situation and be ready to brake.
In particular, the detection of obstacles can
be impaired if there is:
Rdirt on the sensorsoranythingelse
covering the sensors
Rsnow or heavy rain
Rinterference by other radar sources
Rthere are strong radar reflections, for
example in parking garages
Ranarrow vehicle travelinginfront, e.g. a
motorbike
Ravehicle travelinginfrontonadifferent line
relative to the center of your vehicle
Following damage to the frontend of the
vehicle, have the configurationand operation
of the radarsensorschecked ataqualified
specialist workshop. This also applies to
collisions at low speeds where thereisno
visible damage to the frontofthe vehicle.
Braking assistance
To preventacollision with the vehicle in front,
BAS PLUS calculates the brake force
necessary if:
Ryou approach an obstacle, and
RBAS PLUS has detectedarisk of collision
When driving ataspeed under 20 mph
(30 km/h):ifyou depress the brake pedal,
BAS PLUS is activated. The increase in brake
pressure will be carried out at the last
possible moment.
When driving ataspeed greater than
20 mph (30 km/h):ifyou depress the brake
pedal sharply, BAS PLUS automatically raises
the brake pressure toavalue adapted to the
traffic situation.
If BAS PLUS demands particularly high
braking force, preventative passenger
protection measures (PRE-SAFE®)are
activated simultaneously.
XKeep the brake pedal depressed until the
emergencybraking situation is over.
ABS preventsthe wheels from locking.
BAS PLUS is deactivated and the brakes
function as usual if:
Ryou release the brake pedal
Rthere is no longerarisk of collision
Rno obstacle is detected in front of your
vehicle
ESP®(Electronic Stability Program)
Important safety notes
iObserve the "Important safety notes"
section (Ypage 66).
GWARNING
If ESP®is malfunctioning, ESP®is unable to
stabilize the vehicle. Additionally, further
driving safety systems are deactivated. This
increases the risk of skidding and an accident.
Drive on carefully. Have ESP®checked at a
qualified specialist workshop.
!Vehicles with 4MATIC: switch off the
ignition when the parking brake is being
tested onabrake dynamometer.
Application of the brakes by ESP®may
otherwise destroy the brake system.
Vehicles without 4MATIC: observe the notes
on ESP®(Ypage 330) when towing the
vehicle witharaised rear axle.
ESP®is deactivated if the warning lamp
in the instrument cluster lights up
continuously when the engine is running.
If thewarning lamp and the
warning lamp are lit continuously, ESP®is not
available due toamalfunction.
Observe the information on warning lamps
(Ypage 269) and display messages which
may be shown in the instrument cluster
(Ypage 238).
68Driving safety systems
Safety

ADAPTIVE BRAKE
ADAPTIVEBRAKE enhancesbraking safety
and offers increased braking comfort.In
addition to thebraking function,ADAPTIVE
BRAKE also has theHOLDfunction
(Ypage 186) and hill start assist
(Ypage 150).
PRE-SAFE®Brake
Generalinformation
iObservethe"Importantsafetynotes"
section(Ypage 66).
PRE-SAFE®Brakeisonly available in vehicles
with DISTRONIC PLUS.
If PRE-SAFE®Brakeistoaid you, the radar
sensorsystem mustbe:
Ractivated (Ypage 232)
Roperational
With the help of the radar sensor system,
PRE-SAFE®Brakecan detectobstacles that
are in frontofyour vehicle for an extended
period of time.
PRE-SAFE®Brakecan help you to minimize
the risk ofacollision withavehicle ahead or
reduce the effects of suchacollision. If PRE-
SAFE®Brakehas detectedarisk of collision,
you will be warned visually and acoustically
as well as by automatic braking. PRE-SAFE®
Brakecannot preventacollision withoutyour
intervention.
At speeds of up to approximately 40 mph
(70 km/h)PRE-SAFE®Brake can also detect
stationary objects. Examples of stationary
objectsare stopped or parked vehicles.
Important safety notes
GWARNING
PRE-SAFE®Brake will initially brake your
vehicle byapartial application of the brakes
ifadanger of collision is detected. There may
beacollision unless you also brake.
Automatic emergencybraking cannot prevent
acollision. There isarisk of an accident.
Always apply the brakes yourself and try to
take evasive action.
GWARNING
PRE-SAFE®Brake cannot alwaysclearly
identify objects and complextraffic
conditions.
In these cases, PRE-SAFE®Brake may:
Rgive an unnecessary warning and then
brake the vehicle
Rnot giveawarning or intervene
There isarisk of an accident.
Always pay particular attention to the traffic
situation and be readytobrake, especially if
PRE-SAFE®Brake warns you.Terminate the
intervention inanon-critical driving situation.
In particular, the detection of obstacles can
be impaired if there is:
Rdirt on the sensors or anything else
covering the sensors
Rsnow or heavy rain
Rinterference by other radarsources
Rthere are strongradar reflections, for
example in parking garages
Ranarrow vehicle traveling in front,e.g. a
motorbike
Ravehicle traveling in front onadifferent line
relative to the center of your vehicle
GWARNING
PRE-SAFE®Brake does not react:
Rto people or animals
Rto oncoming vehicles
Rto crossingtraffic
Rwhen cornering
Asaresult, PRE-SAFE®Brake may neither
give warnings nor intervene in all critical
situations. There isarisk of an accident.
Always pay careful attention to the traffic
situation and be ready to brake.
72Driving safety systems
Safety