phone MERCEDES-BENZ A-CLASS HATCHBACK 2012 Owners Manual

Thank you for choosing Mercedes-Benz
Before you first drive off, read this Owner's
Manual carefully and familiarise yourself with
your vehicle. For your own safety and a longer
vehicle life, follow the instructions and warn-
ing notices in this manual. Disregarding them may lead to damage to the vehicle or personal
injury.
The equipment or model designation of your
vehicle may vary according to:
R model
R order
R country variant
R availability
The illustrations in this manual show a left-
hand-drive vehicle. On right-hand-drive vehi-
cles, the layout of components and controls
differs accordingly.
Mercedes-Benz is constantly updating its
vehicles to the state of the art.
Mercedes-Benz therefore reserves the right
to introduce changes in the following areas:
R design
R equipment
R technical features
The equipment in your vehicle may therefore
differ from that shown in the descriptions and
illustrations.
The following are integral components of the vehicle:
R Owner's Manual
R Service Booklet
R Equipment-dependent supplements
Keep printed copies of the documents in the
vehicle at all times. If you sell the vehicle,
always pass the documents on to the new
owner.
i You can get to know the important fea-
tures of your vehicle in the interactive Own-
er's Manual on the Internet at:
http://www.mercedes-benz.de/
betriebsanleitung You can also use the A‑Class Guide smart-
phone App:
Apple
®
iOS Android™
The technical documentation team at
Daimler AG wishes you safe and pleasant
motoring.
1765841400Z102 É1765841400Z102iËÍ

Warning lamp (engine diagnos-
tics) ............................................... 264
Engine electronics
Notes ............................................. 336
Problem (fault) ...............................1 49
Engine oil
Additives ........................................ 344
Checking the oil level ..................... 286
Checking the oil level using the
dipstick .......................................... 287
Display message ............................ 245
Filling capacity ............................... 343
Notes about oil grades ................... 343
Notes on oil level/consumption .... 286
Temperature (on-board com-
puter) ............................................. 226
Topping up ..................................... 287
Viscosity ........................................ 344
Environmental protection
Returning an end-of-life vehicle ....... 21
ESP® (Electronic Stability Pro-
gram)
AMG menu (on-board computer) ... 226
Deactivating/activating (AMG
vehicles) .......................................... 66
Deactivating/activating (except
AMG vehicles) ................................ 218
Deactivating/activating (notes;
except AMG vehicles) ..................... .67
Display message ............................ 230
ETS/4ETS ........................................ 65
Function/note s......................... 65, 66
Important safety guidelines ............. 65
Trailer stabilisation .......................... 68
Warning lamp ................................. 260
ETS/4ETS (Electronic Traction Sys-
tem) ...................................................... 65
Exhaust pipe (cleaning instruc-
tions) .................................................. 294
Exterior lighting
Settings options ............................. 105
see Lights
Exterior mirrors
Adjusting ......................................... 99
Anti-dazzle mode (automatic) ........ 100
Folding in when locking (on-board computer) ...................................... 225
Folding in/out (automatically )....... 100 Folding in/out (electrically) ............. 99
Out of position (troubleshooting) ... 100
Parking position ............................. 100
Resetting ......................................... 99
Storing settings (memory func-
tion) ............................................... 101
F
Fault message see Display messages
Filler cap
see Fuel filler flap
Fire extinguisher ............................... 299
First-aid kit ......................................... 298
Fitting a wheel
Fitting a wheel ............................... 328
Lowering the vehicle ...................... 329
Preparing the vehicle ..................... 325
Raising the vehicle ......................... 326
Removing a whee l.......................... 328
Securing the vehicle against roll-
ing away ........................................ 325
Flat tyre
MOExtended tyre s......................... 300
Preparing the vehicle ..................... 300
TIREFIT kit ...................................... 301
see Emergency spare wheel
Floormat ............................................. 281
Foglamps
Extended rang e.............................. 109
Switching on/of f........................... 106
Frequencies
Mobile phone ................................. 336
Two-way radio ................................ 336
Front foglamps
Display message ............................ 241
Fuel
Additives ........................................ 341
Consumption information .............. 342
Consumption statistics .................. 211
Displaying the current consump-
tion ................................................ 212
Displaying the range ...................... 212
Fuel gaug e....................................... 30
Grade (petrol) ................................ 340
Important safety notes .................. 339
Notes for AMG vehicles ................. 340 10
Index

Loading guidelines
............................ 268
Locking
see Central locking
Locking (doors)
Automatic ........................................ 81
Emergency locking .......................... .81
From inside (central locking but-
ton) .................................................. 80
Locking centrally
see Central locking
Locking verification signal (on-
board computer) ............................... 223
Luggage compartment enlarge-
ment ................................................... 271
Important safety notes .................. 271
Luggage compartment floor
Important safety notes .................. 274
opening/closing ............................ 274
stowage well, under ....................... 274
Luggage net ....................................... 271
Lumbar support
Adjusting the 4-way lumbar sup-
port .................................................. 96 M
M+S tyres ........................................... 320
Main-beam headlamps
Changing bulb s.............................. 114
Display message ............................ 241
Switching Adaptive Highbeam
Assist on/of f................................. 109
Switching on/of f........................... 107
Maintenance
see ASSYST PLUS
Manual transmission
Engaging reverse gear ................... 151
Gear lever ...................................... 150
Pulling away ................................... 144
Shift recommendation ................... 151
Shifting to neutral .......................... 151
Starting the engine ........................ 144
Matt finish (cleaning instructions) .. 292
Memory card (audio) ......................... 215
Memory function ............................... 101
Mercedes-Benz Service Centre
see Qualified specialist workshop Message memory (on-board com-
puter) .................................................. 229
Messages
see Display messages
Mirrors
see Exterior mirrors
see Rear-view mirror
see Vanity mirror (in sun visor)
Mobile phone
Frequencies ................................... 336
Installation ..................................... 336
Menu (on-board computer) ............ 215
Notes/placing in the bracket ......... 279
Transmission output (maximum) .... 336
Mobile telephone
Pre-installed bracket ...................... 281
Modifying the programming (key) ..... 75
MOExtended tyres ............................. 300
Motorway mode ................................ 109
MP3
Operating ....................................... 215
see Separate operating instructions
Multifunction display
Function/note s............................. 210
Permanent display ......................... 220
Multifunction steering wheel
Operating the on-board compute r..2 09
Overview .......................................... 33 N
Navigation Menu (on-board computer) ............ 213
see separate operating instructions
Notes on running in a new vehicle .. 142 O
Occupant safety Children in the vehicle ..................... 50
Important safety notes .................... 40
Odometer .......................................... .211
see Total distance recorder
see Trip meter
Oil
see Engine oil
On-board computer
AMG menu ..................................... 226 Index
13

Assistance menu ........................... 217
Audio menu ................................... 214
Convenience submenu .................. 225
Display message s.......................... 229
Displaying a service message ........ 290
Factory setting submenu ............... 225
Heating submenu ........................... 224
Important safety notes .................. 208
Instrument cluster submenu .......... 220
Light submenu ............................... 221
Menu overview .............................. 211
Message memory .......................... 229
Navigation menu ............................ 213
Operating the TV ............................ 215
Operating video DVD ..................... 215
Operation ....................................... 209
RACETIMER ................................... 226
Service menu ................................. 219
Settings menu ............................... 220
Standard display ............................ 211
Telephone menu ............................ 215
Trip menu ...................................... 211
Vehicle submenu ........................... 223
Opening and closing the side trim
panels ................................................. 115
Operating system
see On-board computer
Outside temperature display ........... 209
Overhead control panel ...................... 36
Override feature
Rear side window s........................... 61 P
Paint code .......................................... 338
Paintwork (cleaning instructions) ... 292
Panorama sliding sunroof
Important safety information ........... 86
Opening/closing .............................. 87
Opening/closing the roller sun-
blind ................................................. 89
Problem (malfunction) ..................... 89
Rain closing feature ......................... 88
Resetting ......................................... 89
Parking ............................................... 162
Important safety notes .................. 162
Parking brake ................................ 163 Position of exterior mirror, front-
passenger side ............................... 100
Reversing camera .......................... 191
see Active Parking Assist
see PARKTRONIC
Parking aid
Active Parking Assist ..................... 186
see Exterior mirrors
see PARKTRONIC
Parking aid
see PARKTRONIC
Parking brake
Display message ............................ 233
Electric parking brake .................... 163
Warning lamp ................................. 263
Parking lamps
Display message ............................ 241
Switching on/of f........................... 106
PARKTRONIC
Deactivating/activating ................. 185
Driving system ............................... 182
Function/note s............................. 182
Important safety notes .................. 182
Problem (fault) ............................... 186
Sensor rang e................................. 183
Trailer towing ................................. 185
Warning display ............................. 184
PASSENGER AIRBAG OFF warning
lamp ...................................................... 52
Petrol .................................................. 340
Plastic trim (cleaning instruc-
tions) .................................................. 295
Power windows
see Side windows
PRE-SAFE® (anticipatory occupant
protection)
Operation ......................................... 45
PRE-SAFE® (preventive occupant
safety system)
Display message ............................ 236
Program selector button .................. 155
Protection of the environment
General notes .................................. 21
Pulling away
Automatic transmission ................. 144
Manual transmission ...................... 144
Trailer ............................................ 145 14
Index

Speed, controlling
see Cruise control
Speedometer
Activating/deactivating the addi-
tional speedometer ........................ 220
Digital ............................................ 212
In the Instrument cluster ................. 30
Segments ...................................... 209
Selecting the unit of measure-
ment ..............................................2 20
see Instrument cluster
SPEEDTRONIC
Deactivating variable ..................... 172
Display message ............................ 250
Function/notes ............................ .171
Important safety notes .................. 171
LIM indicator lamp ......................... 171
Permanent ..................................... 172
Selecting ........................................ 171
Storing the current spee d.............. 172
Variabl e......................................... 171
SPORT handling mode
Activating/deactivating (AMG
vehicles) .......................................... 66
Warning lamp ................................. 261
SRS (Supplemental Restraint Sys-
tem)
Display message ............................ 238
Introduction ..................................... 41
Warning lamp ................................. 263
Warning lamp (function) ................... 41
Start/stop function
see ECO start/stop function
Starting (engine) ................................ 143
STEER CONTROL .................................. 69
Steering (display message) .............. 255
Steering wheel
Adjusting (manually) ........................ 98
Button overview ............................... 33
Buttons (on-board computer) ......... 209
Cleaning ......................................... 295
Gearshift paddle s........................... 156
Important safety notes .................... 98
Steering wheel gearshift paddles .... 156
Stopwatch (RACETIMER) ................... 226
Stowage areas ................................... 269 Stowage compartments
Armrest (front) ............................... 270
Armrest (under) ............................. 270
Centre console .............................. 269
Centre console (rear) ..................... 271
Cup holde r..................................... 275
Glove compartment ....................... 269
Important safety information ......... 269
Luggage net ................................... 271
Spectacles compartment ............... 269
Under driver's seat/front-
passenger sea t.............................. 270
Summer tyres .................................... 320
Sun visor ............................................ 277
Supplemental Restraint System
see SRS (Supplemental Restraint
System)
Surround lighting (on-board com-
puter) .................................................. 222
Switching off the alarm (ATA) ............ 69 T
Tail lamps Display message ............................ 241
see Lights
Tailgate
Display message ............................ 254
Emergency unlocking ....................... 83
Important safety notes .................... 82
Opening dimensions ...................... 346
Opening/closing (from outside) ....... 82
Technical data
Capacities ...................................... 338
Emergency spare whee l................. 333
Information .................................... 336
Trailer load s................................... 349
Tyres/wheels ................................. 329
Vehicle data ................................... 346
Telephone
Accepting a call ............................. 216
Display message ............................ 256
Menu (on-board computer) ............ 215
Number from the phone book ........ 216
Redialling ....................................... 217
Rejecting/ending a call ................. 216
Telephone compartment ................ 270 Index
17

Multifunction steering wheel
Function Page
:
Multifunction display 210
;
Audio/COMAND display;
see the separate operating
instructions = ?
Switches on LINGUA-
TRONIC; see the separate
operating instructions ? ~
Rejects or ends a call 215
Exits telephone book/
redial memory
6
Makes or accepts a call
Switches to the redial mem-
ory WX
Adjusts the volume
8
Mute Function Page
A =;
Selects a menu 209
9:
Selects a submenu or
scrolls through lists
209
a
Confirms the selection 209
Hiding display messages 229
B %
Back 209
Switches off LINGUA-
TRONIC; see the separate
operating instructionsMultifunction steering wheel
33At a glance

Warning notice on the front-passenger sun visor
Warning symbol for a rearward-facing child
restraint system
Do not use a rearward-facing child restraint
system on a seat that is protected by an air-
bag installed in front of it.
Automatic child seat recognition on the front-passenger seat G
WARNING
If the 4 PASSENGER AIRBAG OFF indica-
tor lamp does not light up when the child
restraint system is fitted, the front-passenger airbag has not been disabled. If the front-
passenger airbag deploys, the child could be
seriously or even fatally injured.
Proceed as follows:
R do not use a rearward-facing child restraint
system on the front-passenger seat.
R fit a rearward-facing child restraint system
on a suitable rear seat.
or R
only use a forward-facing child restraint
system on the front-passenger seat and
move the front-passenger seat to the rear-
most position.
R have the automatic child seat recognition
checked at a qualified specialist workshop.
To ensure that the automatic child seat rec-
ognition on the front-passenger seat func-
tions/communicates correctly, never place
objects, e.g. a cushion, under the child
restraint system. The entire base of the child
restraint system must always rest on the seat
cushion. An incorrectly fitted child restraint
system cannot perform its intended protec-
tive function in the event of an accident, and
could lead to injuries. G
WARNING
Do not place electronic devices on the front-
passenger seat, e.g.:
R laptops, when switched on
R mobile phones
R cards with transponders, e.g. ski passes or
access cards
Signals from electronic equipment can cause
interference in the automatic child seat rec-
ognition sensor system. This can lead to a
system malfunction. This may cause the 4
PASSENGER AIRBAG OFF indicator lamp to
light up without there being a child seat with
transponders for automatic child seat recog-
nition fitted. The front-passenger airbag will
not then deploy during an accident. It is also
possible that the 6SRS warning lamp
lights up and/or the 4PASSENGER AIR-
BAG OFF indicator lamp does not light up
briefly when you turn the key in the ignition
lock to position 2.52
Children in the vehicleSafety

Problems with automatic child seat recognition
Problem
Possible causes/consequences and
M
MSolutions The
45 indica-
tor lamp on the centre
console is lit. A special Mercedes-Benz child restraint system with a trans-
ponder for automatic child seat recognition has been fitted to the
front-passenger seat. The front-passenger front airbag has there- fore been disabled as desired. G
WARNING
There is no child restraint system fitted to the front-passenger
seat. Automatic child seat recognition is malfunctioning.
It is also possible that the 6SRS warning lamp lights up and/
or the 45 PASSENGER AIRBAG OFF indicator lamp does
not light up briefly when you switch the ignition on.
There is a risk of injury.
X Remove electronic equipment from the front-passenger seat,
e.g.:
R Laptop
R Mobile phone
R Cards with transponders, such as ski passes or access cards
If the 45 indicator lamp remains lit:
X Visit a qualified specialist workshop. Suitable positioning of the child restraint systems
Key to the letters used in the table:
XS
eat which is unsuitable for children in this weight category.
US uitable for child restraint systems in the "Universal" category that are approved for use
in this weight category.
UF Suitable for forward-facing child restraint systems that belong to the "Universal" category and are approved for use in this weight category.
LS uitable for child restraint systems as recommended, see the following table of "Recom-
mended child restraint systems" (Y page 58).56
Children in the vehicleSafety

Useful information
i This Owner's Manual describes all mod-
els, series and optional equipment for your
vehicle that were available at the time of
going to press. National variations are pos- sible. Note that your vehicle may not be
equipped with all of the functions descri-
bed. This is also the case for systems and
functions relevant to safety.
i Read the information on qualified special-
ist workshops: (Y page 24). Key
Important safety notes
G
WARNING
If children are left unsupervised in the vehicle, they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shift the automatic transmission out of
parking position P.
R shift the manual transmission into neutral.
R start the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the key with you and lock the vehicle. Never leave
children or animals unattended in the vehicle.Always keep the key out of reach of children. G
WARNING
If persons (particularly children) are exposed
to heat or cold for a prolonged period, there is a risk of serious or even fatal injuries. Never
leave persons (particularly children) unatten-
ded in the vehicle. G
WARNING
If you attach heavy or large objects to the key, the key could be unintentionally turned in the
ignition lock. This could cause the engine to
be switched off. There is a risk of an accident.
Do not attach any heavy or large objects to the
key. Remove any bulky keyrings before insert-
ing the key into the ignition lock.
! Keep the key away from strong magnetic
fields. Otherwise, the remote control func-
tion could be affected.
Strong magnetic fields can occur in the
vicinity of powerful electrical installations.
Do not keep the key: R with electronic devices, e.g. a mobile
phone or another key
R with metallic objects, e.g. coins or metal
film
R inside metallic objects, e.g. a metal case
United Kingdom only: G
WARNING
When the double locks are activated, the
doors can no longer be opened from the
inside. People in the vehicle can no longer get out, e.g. in hazardous situations. There is a
risk of injury.
Therefore, do not leave any people unsuper-
vised in the vehicle, particularly children, eld-
erly people or people in need of special assis-
tance. Do not activate the double lock when
people are in the vehicle.
If the vehicle has been locked with the key,
then the double lock function is activated as
standard. You can deactivate the double lock
function by deactivating the interior motion
sensor (Y page 70). The doors can then be
opened from the inside after the vehicle has
been locked from the outside. The anti-theft
alarm system is triggered if the door is
opened from the inside. Switch off the alarm
(Y page 69). 74
KeyOpening and closing

R
if you have adopted a sporty driving style
with high cornering speeds or high rates of
acceleration
R if you are predominantly driving slower
than 80 km/h or faster than 180 km/h
R if you are currently using COMAND Online
or making a telephone call with COMAND
Online
R if the time has been set incorrectly
R in active driving situations, such as when
you change lanes or change your speed
Warning and display messages in the
multifunction display X
Activate ATTENTION ASSIST using the on-
board computer (Y page 219).
If ATTENTION ASSIST is active, you will be
warned no sooner than 20 minutes after
your journey has begun. You then hear an
intermittent warning tone twice and the
Attention Assist: Take a break!
Attention Assist: Take a break!
message appears in the multifunction dis-
play.
X If necessary, take a break.
X Press the aor% button to confirm
the message.
On long journeys, take regular breaks in good time to allow yourself to rest properly. If you
do not take a break, you will be warned again
after 15 minutes at the earliest. This will only
happen if ATTENTION ASSIST still detects
typical indicators of fatigue or increasing lap-
ses in concentration.
ATTENTION ASSIST is reset and starts
assessing your tiredness again when you con- tinue your journey if:
R you switch off the engine
R you take off your seat belt and open the
driver's door, e.g. for a change of drivers or
to take a break
When ATTENTION ASSIST is deactivated, the é symbol appears in the multifunction
display in the assistance graphic display. Speed Limit Assist
General notes Speed Limit Assist shows you detected speed
limits in the multifunction display. Data from
the navigation system is also used for this
purpose. If a traffic sign indicating a speed
limit or the end of a speed limit is detected, it
is shown in the multifunction display. If Speed
Limit Assist does not detect any traffic signs, the speed limit from the digital road map is
taken and shown in the display.
Speed Limit Assist detects the traffic signs
with a camera attached behind the top of the
windscreen. :
Speed Limit Assist camera
Important safety notes Speed Limit Assist is only an aid and does not
always detect traffic signs specifying the
maximum permissible speed. Traffic signs
always have priority over the Speed Limit
Assist display.
The system may be impaired or may not func-
tion if:
R there is poor visibility, e.g. due to snow,
rain, fog or spray
R there is glare, e.g. from the sun or from
oncoming traffic
R the windscreen is dirty, misted up or cov-
ered, for instance by a sticker, in the vicinity
of the camera
R the traffic signs are covered, for instance by
dirt, snow or trees 196
Driving systemsDriving and parking