2015 MERCEDES-BENZ A-CLASS HATCHBACK brake sensor

Plastic trim .................................... 334
Reversing camera .......................... 333
Roof lining ...................................... 335
Seat belt ........................................3 35
Seat cover ..................................... 335
Sensors ......................................... 332
Steering wheel ............................... 334
Trim pieces ................................... .335
Washing by hand ........................... 330
Wheels .......................................... .331
Windows ........................................ 331
Wiper blades .................................. 332
Wooden trim .................................. 335
CD player (on-board computer) ........245
Central locking
Automatic locking (on-board com-
puter) ............................................. 251
Locking/unlocking (key ).................. 83
Centre console
Lower section .................................. 35
Upper section .................................. 34
Changing bulbs
Brake lamps ................................... 128
Dipped-beam headlamp s............... 127
Main-beam headlamp s................... 127
Rear foglamp ................................. 128
Reversing lamps ............................ 128
Turn signals (front) ......................... 128
Turn signals (rear) .......................... 128
Child
Restraint system .............................. 58
Child seat
Forward-facing restraint system ...... 62
ISOFIX .............................................. 59
On the front-passenger sea t............ 61
Rearward-facing restraint system .... 62
Recommendations ........................... 66
Suitable positions ............................ 62
Top Tether ....................................... 60
Child-proof locks
Important safety notes .................... 67
Rear doors ....................................... 68
Cigarette lighter ................................ 316
Cleaning
Mirror turn signal ........................... 332
Trailer tow hitch ............................. 333
Climate control
Air conditioning ............................. 137 Auxiliary heating/ventilation .......... 148
Controlling automaticall
y............... 142
Convenience opening/closing
(air-recirculation mode) ................. 146
Cooling with air dehumidification .. 141
Demisting the windows .................. 144
Demisting the windscreen ............. 144
Indicator lamp ................................ 142
Information on using
THERMOTRONIC automatic cli-
mate control .................................. 139
Notes on using the air-condition-
ing system ..................................... 137
Overview of systems ...................... 136
Problem with the rear window
heating .......................................... 146
Problems with cooling with air
dehumidification ............................ 142
Setting the air distribution ............. 143
Setting the air vents ...................... 153
Setting the airflow ......................... 143
Setting the temperature ................ 142
Switching air-recirculation mode
on/of f............................................ 146
Switching on/of f........................... 140
Switching residual heat on/off ...... 147
Switching the rear window heat-
ing on/of f...................................... 145
Switching the ZONE function on/
off .................................................. 143
THERMOTRONIC (2-zone) auto-
matic climate control ..................... 139
Cockpit
Overview .......................................... 28
COLLISION PREVENTION ASSIST
PLUS
Activating/deactivating ................. 249
Display message ............................ 265
Operation/note s.............................. 70
COMAND display
Cleaning ......................................... 334
Combination switch .......................... 122
Consumption statistics (on-board
computer) .......................................... 242
Convenience closing feature .............. 95
Convenience opening feature ............ 95 Index
7

P
Paint code .......................................... 396
Paintwork (cleaning instructions) ... 330
Panic alarm .......................................... 40
Panorama sliding sunroof
Important safety information ........... 98
Operating ......................................... 99
Operating the roller sunblinds for
the sliding sunroof .........................1 00
Problem (malfunction) ................... 103
Rain-closing feature (when driv-
ing) ................................................ 100
Rain-closing feature (when the
engine is switched off) ................... 100
Reversing feature ............................ .99
Parking
Important safety notes .................. 184
Parking brake ................................ 185
Position of exterior mirror, front-
passenger side ...............................1 15
Reversing camera .......................... 217
see Active Parking Assist
see PARKTRONIC
Parking aid
Active Parking Assist ..................... 212
see Exterior mirrors
see PARKTRONIC
Parking assistance
see PARKTRONIC
Parking brake
Display message ............................ 261
Electric parking brake .................... 185
Warning lamp ................................. 300
Parking lamps
Display message ............................ 273
Switching on/off ........................... 121
PARKTRONIC
Deactivating/activating ................. 211
Driving system ............................... 209
Function/notes ............................ .209
Important safety notes .................. 209
Problem (fault) ............................... 212
Sensor range ................................. 209
Warning displa y............................. 210
PASSENGER AIR BAG
Display message ............................ 270
Indicator lamps ................................ 41 Problems (malfunctions) ................ 270
Petrol .................................................. 398
Pets in the vehicle ............................... 69
Plastic trim (cleaning instruc-
tions) .................................................. 334
Power windows
see Side windows
Pre-Crash Safety System
see PRE-SAFE ®
(anticipatory
occupant protection)
PRE-SAFE ®
(anticipatory occupant
protection)
Operation ......................................... 56
PRE-SAFE ®
(preventive occupant
safety system)
Display message ............................ 266
Protection against theft
ATA (Anti-Theft Alarm system )......... 78
Immobiliser ...................................... 77
Interior motion sensor ..................... 79
Tow-away protection ........................ 78
Protection of the environment
General notes .................................. 22
Pulling away
Automatic transmission ................. 160
General notes ................................ 160
Hill start assist ............................... 161
Manual transmission ...................... 160
Trailer ............................................ 161 Q
QR code Mercedes-Benz Guide App ................. 1
Rescue card ..................................... 25
Qualified specialist workshop ........... 24 R
RACE START important safety notes ................... 206
RACE START (AMG vehicles) ............. 206
RACETIMER (on-board computer) .... 254
Radio
Selecting a station ......................... 245
see separate operating instructions
Radio-based vehicle components
Declaration of conformity ................ 23 Index
15

Switching belt adjustment on/off
(on-board computer) ...................... 253
Seat belts
Adjusting the driver's and front-
passenger seat belt ......................... 45
Adjusting the height ......................... 44
Cleaning ......................................... 335
Display message ............................ 266
Fastening ......................................... 44
Important safety guidelines ............. 42
Introduction ..................................... 42
Rear seat belt status indicator ......... 46
Releasing ......................................... 45
Warning lamp ................................. 292
Warning lamp (function) ................... 45
Seats
Adjusting (electrically) ................... 109
Adjusting (manually) ...................... 108
Adjusting the 4-way lumbar sup-
port ................................................ 110
Adjusting the head restraint .......... 109
Cleaning the cover ......................... 335
Correct driver's seat position ........ 106
Important safety notes .................. 107
Seat heating problem .................... 112
Storing settings (memory func-
tion) ............................................... 116
Switching seat heating on/of f....... 111
Securing a load
see Stowage space
Securing luggage ............................... 311
Selector lever
Cleaning ......................................... 334
Sensors (cleaning instructions) ....... 332
Service
see ASSYST PLUS
Service Centre
see Qualified specialist workshop
Service menu (on-board com-
puter) .................................................. 250
Service message
see ASSYST PLUS
Service products
Brake fluid ..................................... 402
Coolant (engine) ............................ 402
Engine oil ....................................... 400
Fuel ................................................ 396
Important safety notes .................. 396 Washer fluid ................................... 403
Setting the air distribution ............... 143
Setting the airflow ............................ 143
Settings
Factory (on-board computer) ......... 253
On-board computer ....................... 250
SETUP (on-board computer) ............. 254
Shifting to neutral (manual trans-
mission) ............................................. 168
Side lamps
Switching on/of f........................... 121
Side windows
Convenience closing ........................ 95
Convenience opening ...................... 95
Important safety notes .................... 94
Opening/closing .............................. 94
Problem (malfunction) ..................... 98
Resetting ......................................... 96
Reversing feature ............................. 94
Sidebag ................................................ 48
Sliding sunroof
see Panorama sliding sunroof
Snow chains ...................................... 361
Socket
Luggage compartment ................... 317
Sockets
Centre console .............................. 317
General notes ................................ 316
Rear compartment ......................... 317
Specialist workshop ............................ 24
Spectacles compartment ................. 307
Speed, controlling
see Cruise control
Speedometer
Activating/deactivating the addi-
tional speedometer ........................ 250
Digital ............................................ 243
In the Instrument cluster ................. 30
Segments ...................................... 238
Selecting a display uni t.................. 250
SPEEDTRONIC
Deactivating variable ..................... 196
Display message ............................ 281
Function/note s............................. 194
Important safety notes .................. 194
LIM indicator lamp ......................... 195
Permanent ..................................... 196 Index
17

Protection of the environment
General notes
H
Environmental note
Daimler's declared policy is one of compre-
hensive environmental protection.
Our objectives are to use the natural resour-
ces which form the basis of our existence on
this planet sparingly and in a manner which
takes the requirements of both nature and
humanity into consideration.
You too can help to protect the environment
by operating your vehicle in an environmen-
tally-responsible manner.
Fuel consumption and the rate of engine,
transmission, brake and tyre wear depend on
the following factors:
R operating conditions of your vehicle
R your personal driving style
You can influence both factors. Therefore,
please bear the following in mind:
Operating conditions:
R avoid short trips, as these increase fuel
consumption.
R observe the correct tyre pressure.
R do not carry any unnecessary weight in the
vehicle.
R remove the roof rack once you no longer
need it.
R a regularly serviced vehicle will contribute
to environmental protection. You should
therefore adhere to the service intervals.
R all maintenance work should be carried out
at a qualified specialist workshop.
Personal driving style:
R do not depress the accelerator pedal when
starting the engine.
R do not warm up the engine when the vehicle
is stationary.
R drive carefully and maintain a safe distance
from the vehicle in front.
R avoid frequent, sudden acceleration and
braking. R
change gear in good time and use each gear
only up to Ôof its maximum engine speed.
R switch off the engine in stationary traffic.
R monitor the vehicle's fuel consumption. Returning an end-of-life vehicle
EU countries only:
Mercedes-Benz will take back your old vehicle to dispose of it in an environmentally-respon-sible manner in accordance with the Euro-
pean Union (EU) End of Life Vehicles Direc-
tive.
There is a network of return points and dis-
assembly plants available. You can return
your vehicle to these plants free of charge.
This makes a valuable contribution to the
recycling process and the conservation of
resources.
For further information on recycling old vehi- cles, recovery and the terms of the policy,
visit the Mercedes-Benz homepage. Genuine Mercedes-Benz parts
H
Environmental note
Daimler AG also supplies reconditioned
assemblies and parts which are of the same
quality as new parts. For these, the same war-
ranty applies as for new parts.
! Airbags and seat belt tensioners, as well
as control units and sensors for these
restraint systems, may be installed in the
following areas of your vehicle:
R doors
R door pillars
R door sills
R seats
R dashboard
R instrument cluster
R centre console 22
Introduction

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.
If ABS is malfunctioning, other systems,
including driving safety systems, will also
become inoperative. Observe the information on the ABS warning lamp (Y page 295) and
display messages which may be shown in the
instrument cluster (Y page 258).
Brakes X
If ABS intervenes: continue to depress the
brake pedal with force 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 indica-
tion of hazardous road conditions; this serves as a reminder to take extra care while driving. BAS (Brake Assist)
General notes BAS operates in emergency braking situa-
tions. If you depress the brake pedal quickly,
BAS automatically boosts the braking force,
thus shortening the stopping distance.
Important safety notes i
Observe the "Important safety notes" sec-
tion (Y page 69). G
WARNING
If BAS is malfunctioning, the braking distance
in an emergency braking situation is
increased. There is a risk of accident.
In an emergency braking situation, depress
the brake pedal with full force. ABS prevents
the wheels from locking. Braking X
Keep the brake pedal depressed firmly 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
PLUS
General notes i
Observe the "Important safety notes" sec-
tion (Y page 69).
COLLISION PREVENTION ASSIST PLUS con-
sists of a distance warning function with an
autonomous braking function and Adaptive
Brake Assist.
COLLISION PREVENTION ASSIST PLUS can
help you to minimise the risk of a collision
with the vehicle in front or reduce the effects of such a collision.
If COLLISION PREVENTION ASSIST PLUS
detects that there is a risk of a collision, you
will be warned visually and acoustically. If you
do not react to the visual and audible collision warning, autonomous braking can be initiated
in critical situations. If you apply the brake
yourself in a critical situation, the COLLISION PREVENTION ASSIST PLUS Adaptive Brake
Assist assists you.
Important safety notes Detection of hazardous situations can be par-
ticularly impaired by:
R dirt on the sensors or obscured sensors
R snow or heavy rain
R interference by other radar sources
R strong radar reflections, for example, in
multi-storey car parks
R a narrow vehicle travelling in front, e.g. a
motorcycle 70
Driving safety systemsSafety

R
a vehicle travelling in front on a different
line
R new vehicles or after a service on the COL-
LISION PREVENTION ASSIST PLUS system
Observe the important safety notes in the
"Running-in notes" section (Y page 156).
Following damage to the front end of the vehi-
cle, have the configuration and operation of
the radar sensor checked at a qualified spe-
cialist workshop. This also applies to colli-
sions at slow speeds where there is no visible
damage to the front of the vehicle.
Activating/deactivating The COLLISION PREVENTION ASSIST PLUS is
automatically active after switching on the
ignition.
You can activate or deactivate COLLISION
PREVENTION ASSIST PLUS in the on-board
computer (Y page 249). When deactivated,
the distance warning function and the auton- omous braking function are also deactivated.
Vehicles with black and white multifunc-
tion display: when COLLISION PREVENTION
ASSIST PLUS is activated, the multifunction
display in the status overview shows the Ä
symbol.
Vehicles with colour multifunction dis-
play: when COLLISION PREVENTION ASSIST
PLUS is deactivated, the multifunction dis-
play in the assistance graphic shows the æ
symbol.
Distance warning function General notes
The distance warning function can help you to
minimise the risk of a collision with the vehi-
cle in front or reduce the effects of such a
collision. If the distance warning function
detects that there is a risk of a collision, you
will be warned visually and acoustically. Important safety notes
i Observe the "Important safety notes" sec-
tion for driving safety systems (Y page 69). G
WARNING
The distance warning function does not react:
R to people or animals
R to oncoming vehicles
R to crossing traffic
R when cornering
Thus, the distance warning function cannot
provide a warning in all critical situations.
There is a risk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake. G
WARNING
The distance warning function cannot always
clearly identify objects and complex traffic
situations.
In such cases, the distance warning function
may:
R give an unnecessary warning
R not give a warning
There is a risk of an accident.
Always pay careful attention to the traffic sit-
uation; do not rely on the distance warning
function alone.
Function
The distance warning function issues a warn- ing at speeds:
R of approximately 30 km/h or more, if, over
several seconds, the distance maintained
to the vehicle travelling in front is insuffi-
cient. The ·distance warning lamp
then lights up in the instrument cluster.
R of approximately 7 km/h or more, if you
rapidly approach a vehicle in front. An inter-
mittent warning tone will then sound, and
the · distance warning lamp will light
up in the instrument cluster. Driving safety systems
71Safety Z

X
Brake immediately in order to increase the
distance from the vehicle in front.
or
X Take evasive action provided it is safe to do
so.
Due to the nature of the system, particularly
complicated but non-critical driving condi-
tions may also cause the system to display a
warning.
With the help of the radar sensor system, the distance warning function can detect obsta-
cles that are in the path of your vehicle for an
extended period of time.
Up to a speed of approximately 70 km/h, the
distance warning function can also react to
stationary obstacles, such as stopped or
parked vehicles.
Autonomous braking function If the driver does not react to the distance
warning signal in a critical situation, COLLI-
SION PREVENTION ASSIST PLUS can assist
with the autonomous braking function.
The autonomous braking function:
R gives the driver more time to react to criti-
cal driving situations
R can help the driver to avoid an accident or
R reduces the effects of an accident
Due to the nature of the system, complicated but non-critical driving conditions may also
cause the Autonomous Braking function to
intervene.
If the autonomous braking function demands
particularly high braking force, preventative
passenger protection measures (PRE-SAFE ®
)
are activated simultaneously (Y page 56).
Adaptive Brake Assist General notes
i Observe the "Important safety notes" sec-
tion (Y page 69).
With the help of Adaptive Brake Assist, the
distance warning signal can detect obstacles that are in the path of your vehicle for an
extended period of time.
If Adaptive Brake Assist detects a risk of col-
lision with the vehicle in front, it calculates
the braking force necessary to avoid a colli-
sion. If you apply the brakes forcefully, Adap-
tive Brake Assist will automatically increase
the braking force to a level suitable for the
traffic conditions.
Adaptive Brake Assist provides braking assis- tance in hazardous situations at speeds
above 7 km/h. It uses radar sensor technol-
ogy to assess the traffic situation.
Up to a speed of approximately 250 km/h,
Adaptive Brake Assist is capable of reacting
to moving objects that have already been
detected as such at least once over the period
of observation.
Up to a speed of approximately 70 km/h,
Adaptive Brake Assist reacts to stationary
obstacles.
If Adaptive Brake Assist demands particularly high braking force, preventative passenger
protection measures (PRE-SAFE ®
) are activa-
ted simultaneously (Y page 56).
X Keep the brake pedal depressed until the
emergency braking situation is over.
ABS prevents the wheels from locking.
The brakes will work normally again if:
R you release the brake pedal
R there is no longer any danger of a collision
R no obstacle is detected in front of your
vehicle
Adaptive Brake Assist is then deactivated.
Important safety notes
i Observe the "Important safety notes" sec-
tion for driving safety systems (Y page 69). G
WARNING
Adaptive Brake Assist cannot always clearly
identify objects and complex traffic situa-
tions. 72
Driving safety systemsSafety

In such cases, Adaptive Brake Assist can:
R intervene unnecessarily
R not intervene
There is a risk of an accident.
Always pay careful attention to the traffic sit- uation and be ready to brake. Terminate the
intervention in a non-critical driving situation. G
WARNING
Adaptive Brake Assist does not react:
R to people or animals
R to oncoming vehicles
R to crossing traffic
R when cornering
As a result, the Adaptive Brake Assist may not intervene in all critical conditions. There is a
risk of an accident.
Always pay careful attention to the traffic sit- uation and be ready to brake.
Due to the nature of the system, particularly
complicated but non-critical driving condi-
tions may also cause Brake Assist to inter-
vene.
If Adaptive Brake Assist is not available due to a malfunction in the radar sensor system, thebrake system remains available with full
brake boosting effect and BAS. Adaptive brake lights
The adaptive brake lights warn following traf- fic in an emergency braking situation:
R by flashing brake lamps
R the hazard warning lamps are activated
If you brake sharply from a speed of more
than 50 km/h or if braking is assisted by BAS
or BAS PLUS, the brake lamps flash rapidly. In
this way, traffic travelling behind you is
warned in an even more noticeable manner.
If you brake sharply from a speed of more
than 70 km/h to a standstill, the hazard warn- ing lamps are activated automatically. If the
brakes are applied again, the brake lamps light up continuously. The hazard warning
lamps switch off automatically if you travel
faster than 10 km/h. You can also switch off
the hazard warning lamps using the hazard
warning button (Y page 123). ESP
®
(Electronic Stability Program)
General notes i
Observe the "Important safety notes" sec-
tion (Y page 69).
ESP ®
monitors driving stability and traction,
i.e. power transmission between the tyres
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 stabilise 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 stabilise the vehicle during braking.
ETS/4ETS (Electronic Traction System) i
Observe the "Important safety notes" sec-
tion (Y page 69).
ETS traction control is part of ESP ®
. On vehi-
cles with 4MATIC, 4ETS is a component of
ESP ®
.
Traction control brakes the drive wheels indi-
vidually 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 trans-
ferred to the wheel or wheels with traction.
Traction control remains active if you deacti-
vate ESP ®
.
Important safety notes i
Observe the "Important safety notes" sec-
tion (Y page 69). Driving safety systems
73Safety Z