2014 MERCEDES-BENZ CLA brakes

Audio system
see separate operating instructions
Authorized Centers
see Qualified specialist workshop
Authorized Mercedes-Benz Center
see Qualified specialist workshop
Authorized workshops
see Qualified specialist workshop
AUTO lights
Display message............................226
see Lights
Automatic engine start (ECO start/
stop function)....................................140
Automatic engine switch-off (ECO
start/stop function)..........................139
Automatic headlamp mode..............105
Automatic transmission
Automatic drive program...............147
Changing gear...............................145
DIRECT SELECT lever.....................142
Display message............................236
Drive program display....................143
Driving tips....................................145
Emergency running mode..............151
Engaging drive position .................. 144
Engaging neutral............................144
Engaging parkposition (AMG
vehicles)........................................145
Engaging reversegear...................143
Engaging the parkposition............143
Holding the vehicle stationary on
uphill gradients..............................145
Kickdown.......................................146
Manual drive program....................148
Overview........................................142
Problem (malfunction)...................151
Programselectorbutton................146
Pulling away...................................138
Selector lever................................144
Starting the engine........................138
Steering wheel paddle shifters......147
Transmission position display143, 144
Transmissionpositions..................145
Automatic transmission
emergency mode............................... 151
B
Backup lamp
Changing bulbs..............................114
Display message............................225
BAS (Brake Assist System).................62
Battery (SmartKey)
Checking .......................................... 74
Important safety notes....................74
Replacing.........................................74
Battery (vehicle)
Charging........................................302
Display message............................228
Important safety notes..................299
Jump starting.................................303
Belt force limiter
Activation ......................................... 53
Function ...........................................53
Blind SpotAssist
Activating/deactivating.................205
Display message............................231
Notes/function..............................188
Brake Assist
see BAS (Brake Assist System)
Brake fluid
Display message............................219
Notes.............................................348
Brake lamps
Changing bulbs..............................114
Display message............................224
Brakes
ABS..................................................61
Adaptive Brake Assist......................63
BAS..................................................62
Brake fluid (notes).........................348
Display message............................213
Driving tips....................................158
Important safety notes..................158
Maintenance..................................159
Parking brake................................154
Warning lamp ................................. 242
Breakdown
see Flat tire
see Towing away/tow-starting
Bulbs
see Replacing bulbs
Index5

Safety systems..............................213
SmartKey.......................................240
Tires ............................................... 234
Vehicle ...........................................236
Distance recorder.............................197
see Odometer
see Trip odometer
Distance warning function
Activating/deactivating.................204
Function/notes ................................ 62
Warning lamp ................................. 250
DISTRONIC PLUS
Activationconditions.....................166
Cruise control lever.......................166
Deactivating ................................... 169
Display message............................232
Displays in the multifunction
display...........................................170
Driving tips....................................170
Function/notes.............................164
Important safety notes..................164
Setting the specified minimum
distance.........................................168
Warning lamp ................................. 250
Doors
Automatic locking (on-board
computer)......................................208
Automatic locking (switch) ...............79
Central locking/unlocking
(SmartKey) .......................................72
Control panel...................................35
Display message............................239
Emergency locking ........................... 79
Emergency unlocking.......................79
Important safety notes....................77
Opening (from inside)......................77
Drinking and driving.........................157
Drinks holder
see Cupholder
Drive program
Automatic......................................147
Display...........................................144
Display (DIRECT SELECT lever)......143
Manual ...........................................148
SETUP (on-board computer)..........210
Driver's door
see Doors
Driving abroad
Mercedes-Benz Service.................285
Symmetrical low beam..................104
Driving on flooded roads..................161
Driving safety systems
ABS (Anti-lock Braking System).......61
ADAPTIVE BRAKE.............................69
Adaptive Brake Assist......................63
BAS (Brake Assist System)..............62
COLLISION PREVENTION ASSIST....62
COLLISION PREVENTION ASSIST
PLUS................................................64
Distance warning function...............62
Electronic brake force distribution...69
ESP®(Electronic Stability
Program)....................................65, 66
ETS/4ETS (Electronic Traction
System)...........................................65
Important safety information...........61
Overview..........................................61
STEER CONTROL.............................69
Driving systems
Active Parking Assist.....................178
ATTENTION ASSIST........................186
Blind Spot Assist ............................ 188
Cruise control................................162
Display message............................229
DISTRONICPLUS...........................164
HOLD function...............................172
Lane Keeping Assist......................190
Lane Tracking package..................188
PARKTRONIC.................................175
RACESTART (AMG vehicles)..........173
Rearview camera..........................182
Speed LimitAssist.........................187
Driving tips
Automatic transmission.................145
Brakes...........................................158
Break-in period..............................136
Checking brake lining thickness....160
DISTRONICPLUS...........................170
Downhill gradient...........................158
Drinking and driving.......................157
Driving abroad...............................104
Driving in winter .............................161
Driving on flooded roads................161
Driving on wet roads......................161
Exhaustcheck...............................157
8Index

U
Unlocking
Emergencyunlocking.......................79
From inside the vehicle (central
unlocking button).............................78
V
Vanity mirror (in the sun visor)........262
Vehicle
Correct use......................................25
Data acquisition...............................26
Equipment.......................................22
Individualsettings..........................205
Limited Warranty.............................26
Loading..........................................323
Locking (in an emergency)...............79
Locking (SmartKey) .......................... 72
Lowering........................................340
Maintenance....................................23
Parking for a long period ................ 156
Pulling away...................................138
Raising...........................................337
Reporting problems.........................25
Securing from rolling away............337
Towing away..................................305
Tow-starting...................................305
Transporting..................................307
Unlocking (in an emergency)...........79
Unlocking (SmartKey)......................72
Vehicle data...................................351
Vehicle data.......................................351
Vehicle dimensions...........................351
Vehicle emergency locking................79
Vehicle identification number
see VIN
Vehicle identification plate..............344
Vehicle maintenance
see ASSYST PLUS
Vehicle tool kit..................................294
Video (DVD)........................................ 201
VIN......................................................344
W
Warning and indicator lamps
ABS ................................................ 242
Brakes...........................................242
Check Engine.................................248
Coolant..........................................248
Distance warning...........................250
DISTRONICPLUS...........................250
ESP®..............................................244
ESP®OFF ....................................... 245
Fuel tank ........................................ 248
Overview..........................................30
PASSENGER AIR BAG OFF
indicator lamp..................................45
Reserve fuel...................................248
Seat belt........................................240
SPORT handling mode...................245
SRS ................................................ 247
Tire pressure monitor....................251
Warranty............................................344
Washer fluid
Display message............................239
Wheel bolttightening torque...........340
Wheel chock......................................337
Wheels
Changingawheel..........................336
Checking ........................................ 313
Cleaning ......................................... 287
Cleaning (warning).........................336
Important safety notes..................312
Interchanging/changing................336
Mountinganew wheel...................339
Mountingawheel..........................336
Removingawheel..........................339
Storing...........................................336
Tightening torque ........................... 340
Wheelsize/tiresize.......................340
Window curtain air bag
Display message............................220
Operation .........................................45
Windows
see Side windows
Windshield
Defrosting......................................129
Windshieldwasher fluid
see Windshield washer system
Windshieldwasher system
Adding washer fluid.......................283
Notes.............................................350
Index19

Warning and indicator lamps
FunctionPage
Low-beam
headlamps105
Parking lamps106
"High-beam
headlamps106
!ESP®244
Electric parking brake (red)
(USA only)
(Canada only)247
Electric parking brake
(yellow)247
Distance warning250
Turn signals106
SRS247
Seat belts240
FunctionPage
SPORT handling
mode in AMG vehicles245
\rCoolant248
Rearfog lamp106
\rFog lamps105
Engine diagnostics248
Tire pressure monitor251

Reserve fuel248
#ESP®OFF244
$ABS242
%Brakes242
(USA only)
(Canada only)
30Instrument cluster
At a glance

GWARNING
If ABS is faulty, the wheels could lock when
braking. The steerability and braking
characteristics may be severely impaired.
Additionally, further driving safety systems
are deactivated. There is an increased danger
of skidding and accidents.
Drive on carefully. Have ABS checked
immediately 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 (Ypage 242) and
display messages which may be showninthe
instrument cluster (Ypage 213).
ABS works from a speed of about 5 mph
(8 km/h), regardless of road-surface
conditions. ABS works on slippery roads,
even if you only brake gently.
Braking
XIf ABS intervenes:continue to depress the
brake pedal vigorously until the braking
situation is over.
XTo 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.
BAS (Brake Assist System)
General information
BAS operates in emergency braking
situations. If you depress the brake pedal
quickly, BAS automatically boosts the braking
force, thus shortening the stopping distance.
Important safety notes
iObserve the "Important safety notes"
section (Ypage 61).
GWARNING
If BAS is malfunctioning, the braking distance
in an emergency braking situation is
increased. There is a risk of an accident.
In an emergency braking situation, depress
the brake pedal with full force. ABS prevents
the wheels from locking.
Braking
XKeep the brake pedal firmly depressed until
the emergency braking situation is over.
ABS prevents the wheels from locking.
The brakes will function as usual once you
release the brake pedal. BAS is deactivated.
COLLISION PREVENTION ASSIST
General notes
COLLISION PREVENTION ASSIST consists of
the Adaptive Brake Assist and the distance
warning function, which are described in the
following.
Distance warning function
Important safety notes
iObserve the "Important safety notes"
section for driving safety systems
(Ypage 61).
GWARNING
The distance warning function does not react:
Rto people or animals
Rto oncoming vehicles
Rto crossing traffic
Rwhen cornering
Thus, the distance warning function cannot
provide a warning in all critical situations.
There is a risk of an accident.
62Driving safety systems
Safety

Assist may not intervene. There is a riskofan
accident.
Always pay careful attention to the traffic
situationand be ready to brake.
GWARNING
Adaptive Brake Assist does not react:
Rto people or animals
Rto oncoming vehicles
Rto crossing traffic
Rto stationary obstacles
Rwhen cornering
As a result, Adaptive Brake Assist may not
intervene in all critical conditions. There is a
risk of an accident.
Always pay careful attention to the traffic
situationand be ready to brake.
Due to the nature of the system, particularly
complicated but non-critical driving
conditions may also cause Brake Assist to
intervene.
Adaptive Brake Assist aids you in braking
during hazardous situations at speeds above
4mph (7 km/h) and uses the radar sensor
system to evaluate the traffic situation.
With the help of a sensorsystem, adaptive
Brake Assistcan detect obstacles that are in
the path of your vehicle for an extended
period of time.
Should you approach an obstacle and
Adaptive Brake Assist has detected a riskof
collision, Adaptive Brake Assist calculates the
braking force necessary to avoid a rear-end
collision. Should you apply the brakes
vigorously, Adaptive Brake Assist will
automatically increase the braking force to a
level suitable for the traffic conditions.
XKeep the brake pedal depressed until the
emergency braking situation is over.
ABS prevents the wheels from locking.
The brakes will work normally againif:
Ryou release the brake pedal
Rthere is no longerany dangerofarear-end
collision.
Rno obstacle is detected in front of your
vehicle
Adaptive Brake Assist is then deactivated.
Up to vehicle speeds of around 155 mph
(250 km/h), adaptive Brake Assist is capable
of reacting to moving objects that have
already been recognized as such at least once
over the period of observation. Adaptive
Brake Assist does not react to stationary
obstacles.
If Adaptive Brake Assist is not available due
to a malfunction in the radar sensor system,
the brake system remains available with full
brake boosting effect and BAS.
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 strong radar reflections, for
example in parking garages
Ra narrow vehicle traveling in front, e.g. a
motorbike
Ra vehicle traveling in front on a different line
relative to the center of your vehicle
Following damage to the front end of the
vehicle, have the configuration and operation
of the radar sensor checked at a qualified
specialist workshop. This also applies to
collisions at low speeds where there is no
visible damage to the front of the vehicle.
COLLISION PREVENTION ASSIST PLUS
General information
COLLISION PREVENTION ASSIST PLUS is
only available on vehicles with DISTRONIC.
COLLISION PREVENTION ASSIST PLUS
extends the functionality of COLLISION
PREVENTION ASSIST with an automatic
64Driving safety systems
Safety

braking function. COLLISION PREVENTION
ASSIST PLUS can help you to minimize the
risk of a front-end collision with a vehicle
ahead or reduce the effects of such a
collision. If COLLISION PREVENTION ASSIST
PLUS detects that thereis a risk of a collision,
you will be warned visually and acoustically.
In critical situations COLLISION PREVENTION
ASSIST PLUS also initiates automatic
braking.
Function
XTo activate/deactivate:activate or
deactivate COLLISION PREVENTION
ASSIST PLUS in the on-board computer
(Ypage 204).
If COLLISION PREVENTION ASSIST PLUS is
deactivated, the
symbol appears in the
assistance graphics display.
If the driver's seat belt is fastened,
COLLISION PREVENTION ASSIST PLUS can
brake automatically withinaspeed range of
between 4 mph (7 km/h) and 124 mph
(200 km/h).
COLLISION PREVENTION ASSISTPLUS can
also react to stationary obstacles with
automatic braking within a speed range of
between 4 mph (7 km/h) and 19 mph
(30 km/h).
In particular, the detection of obstacles can
be impaired if:
Rdirt on the sensors or anything else
covering the sensors
Rsnow or heavy rain
Rinterference by other radarsources
Rthere are strong radar reflections, for
example in parking garages
Ra narrow vehicle traveling in front, e.g. a
motorbike
Ra vehicle traveling in front on a different line
relative to the center of your vehicle
Following damage to the front end of the
vehicle, have the configuration and operation
of the radar sensor checked at a qualified
specialist workshop. This also applies to
collisions at low speeds where there is no
visible damage to the front of the vehicle.
ESP®(Electronic Stability Program)
General notes
iObserve the "Important safety notes"
section (Ypage 61).
ESP®monitors driving stability and traction,
i.e. power transmission between the tires and
the road surface.
If ESP®detects that the vehicle is deviating
from the direction desired by the driver, one
or more wheels are braked to stabilize the
vehicle. The engine output is also modified to
keep the vehicle on the desired course within
physical limits. ESP®assists the driver when
pulling away on wet or slippery roads. ESP®
can also stabilize the vehicle during braking.
ETS/4ETS (Electronic Traction System)
iObserve the "Important safety notes"
section (Ypage 61).
ETS/4ETS traction control is part of ESP®.
ETS brakes the drive wheels individually if
they spin. This enables you to pull away and
accelerate on slippery surfaces, for example
if the road surface is slippery on one side. In
addition, more drive torque is transferred to
the wheel or wheels with traction.
ETS remains active when you deactivate
ESP®.
Important safety notes
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.
Driving safety systems65
Safety
Z

!When testing the electric parking brake
on a braking dynamometer, switch off the
ignition. Application of the brakes by
ESP®may otherwise destroy the brake
system.
!Vehicles with 4MATIC: switch off the
ignition when the electric parking brake is
being tested on a brake dynamometer.
Application of the brakes by ESP®may
otherwise destroy the brake system.
!Vehicles with 4MATIC: function or
performance tests may only be carried out
on a 2-axle dynamometer. Before you
operate the vehicle on such a
dynamometer, please consult a qualified
workshop. You could otherwise damage
the drive train or the brake system.
!Do not tow vehicles with 4MATIC with the
front or rear axle raised.
Vehicles without 4MATIC: when towing your
vehicle with the front axle raised, it is
important that you observe the notes on
ESP®(Ypage 307).
Vehicles with 4MATIC: when towing your
vehicle with both axles on the ground, it is
important that you observe the notes on
ESP®(Ypage 307).
ESP®is deactivated if theESP®OFF
warning lamp in the instrument cluster lights
up continuously when the engine is running.
If theESP®warning lamp and the
ESP®OFF warning lamp are lit
continuously, ESP®is not available due to a
malfunction.
Observe the information on warning lamps
(Ypage 244) and displaymessages which
may be shown in the instrument cluster
(Ypage 213).
iOnly use wheels with the recommended
tire sizes. Only then will ESP®function
properly.
Characteristics of ESP®
General information
If theESP warning lamp goes out before
beginning the journey, ESP®is automatically
active.
If ESP®intervenes, theESP®warning
lamp flashes in the instrument cluster.
If ESP®intervenes:
XDo not deactivate ESP®under any
circumstances.
XOnly depress the accelerator pedal as far
as necessary when pulling away.
XAdapt your driving style to suit the
prevailing road and weather conditions.
ECO start/stop function
The ECO start/stop function switches the
engine off automatically when the vehicle
stops moving. The engine starts
automatically when the driver wants to pull
away again. ESP®remains in its previously
selected status.Example:if ESP®was
deactivated before the enginewas switched
off, ESP®remains deactivated when the
engine is switched on again.
Deactivating/activating ESP®(AMG
vehicles)
Important safety notes
iObserve the "Important safety notes"
section(Ypage 61).
You can select between the following states
of ESP®:
RESP®is activated.
RSPORT handling mode is activated.
RESP®is deactivated.
GWARNING
When SPORT handling mode is activated,
there is a greater risk of skidding and
accidents.
66Driving safetysystems
Safety