2012 MERCEDES-BENZ A CLASS reset

1, 2, 3 ...
12 V socket see Socket

4ETS
see ETS/4ETS (Electronic Trac-
tion System)
4MATIC (permanent all-wheel
drive)
Display message ............................ 254
4MATIC (permanent four-wheel
drive) .................................................. 182A
ABS (Anti-lock Braking System) Display message

............................ 230
Function/notes ................................ 61
Important safety notes .................... 61
Warning lamp ................................. 258
Activating/deactivating air-recir-
culation mode .................................... 132
Activating/deactivating cooling
with air dehumidification ................. 126
Active light function .........................109
Active Park Assist Display message ............................ 248
Active Parking Assist
Cancelling ...................................... 190
Detecting parking spaces .............. 187
Exiting a parking space .................. 189
Function/notes ............................. 187
Important safety notes .................. 186
Parking .......................................... 188
Towing a trailer .............................. 190
ADAPTIVE BRAKE ................................. 69
Adaptive Brake Assist Display message ............................ 237
Function/notes ................................ 64
Adaptive brake lamps .........................65
Adaptive Highbeam Assist Display message ............................ 243
Function/notes ............................. 110
Adaptive Main-beam Assist
Switching on/off (on-board com-
puter) ............................................. 222
Additional speedometer ................... 220
Additives (engine oil) ........................344Adjusting the headlamp range
.........107
Airbags Front airbag (driver, front
passenger) ....................................... 43
Important safety guidelines .............42
Kneebag ...........................................

44
Sidebag ............................................ 44
Triggering ......................................... 41
Windowbag ...................................... 45
Air-conditioning system
see Climate control
Air filter (white display message) ....245
Air vents Important safety notes .................. 139
Rear ............................................... 140
Setting ........................................... 139
Setting the centre air vents ...........139
Setting the side air vents ............... 140
see Climate control
Alarm system
see ATA (Anti-Theft Alarm system)
Ambient lighting
Setting the brightness (on-board
computer) ...................................... 222
AMG
Menu (on-board computer) ............ 226
Performance Seat ............................ 97
Anti-glare film .................................... 281
Anti-lock braking system see ABS (Anti-lock Braking System)
Anti-Theft Alarm system
see ATA (Anti-Theft Alarm system)
Aquaplaning ....................................... 167
Ashtray ............................................... 277
Assistance display (on-board com-
puter) .................................................. 217
Assistance menu (on-board com-
puter) .................................................. 217
ASSYST PLUS Displaying a service message ........ 290
Hiding a service message .............. 289
Notes ............................................. 289
Resetting the service interval dis-
play ................................................ 290
Service message ............................ 289
Special service requirements ......... 290 4
Index

Tow-starting (vehicle) ..................... 314
Warning lamp (engine diagnostics)
264
Engine electronics
Notes ............................................. 336
Problem (fault) ............................... 149
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 computer) . 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) ...................... 68
Display message ............................ 230
ETS/4ETS ........................................ 65
Function/notes ......................... 65, 66
Important safety guidelines .............65
Trailer stabilisation ..........................68
Warning lamp ................................. 260
ETS/4ETS (Electronic Traction Sys-
tem) ...................................................... 65
Exhaust pipe (cleaning instructions) 294
Exterior lighting Settings options ............................. 105
see Lights
Exterior mirrors
Adjusting ......................................... 99
Anti-dazzle mode (automatic) ........ 100
Folding in/out (automatically) ....... 100
Folding in/out (electrically) ............. 99
Folding in when locking (on-board
computer) ...................................... 225
Out of position (troubleshooting) ...100 Parking position .............................
100
Resetting ......................................... 99
Storing settings (memory function)
101 F
Fault message see Display messages


Filler cap
see Fuel filler flap
Fire extinguisher ............................... 299
First-aid kit ......................................... 298
Fitting a wheel Removing a wheel ..........................328
Fitting wheels
Fitting a wheel ............................... 328
Lowering the vehicle ......................329
Preparing the vehicle .....................325
Raising the vehicle ......................... 326
Securing the vehicle against roll-
ing away ........................................ 325
Flat tyre
MOExtended tyres .........................300
Preparing the vehicle .....................300
TIREFIT kit ...................................... 301
see Emergency spare wheel
Floormat ............................................. 281
Foglamps Extended range .............................. 109
Switching on/off ........................... 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 gauge ....................................... 30
Grade (petrol) ................................ 340
Important safety notes .................. 339
Notes for AMG vehicles ................. 340
Problem (malfunction) ...................161
Quality (diesel) ............................... 34110
Index

Audio menu
................................... 214
Convenience submenu .................. 225
Displaying a service message
........290
Display messages ..........................229
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 windows ........................... 61P
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 ................................ 163Position 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 brake
Display message ............................ 233
Electric parking brake ....................163
Warning lamp ................................. 263
Parking lamps
Display message ............................ 241
Switching on/off ........................... 106
PARKTRONIC
Deactivating/activating ................. 185
Driving system ............................... 182
Function/notes ............................. 182
Important safety notes .................. 182
Problem (fault) ............................... 186
Sensor range ................................. 183
Trailer towing ................................. 185
Warning display ............................. 184
PASSENGER AIRBAG OFF warning
lamp ...................................................... 52
Petrol .................................................. 340
Plastic trim (cleaning instructions) . 295
Power windows see Side windows
PRE-SAFE ®
(preventive occupant
safety system) Display message ............................ 236
Operation ......................................... 45
Program selector button .................. 155
Protection of the environment General notes .................................. 21
Pulling away
Automatic transmission ................. 144
Manual transmission ...................... 144
Trailer ............................................ 145 Q
Qualified specialist workshop ...........2414
Index

S
Safety Children in the vehicle .....................50
Child restraint systems ....................50
Safety system
see Driving safety system

Seat
Adjusting (Performance Seat) ..........97
Folding the backrest (rear com-
partment) forwards/back ..............272
Seat belt
Adjusting the driver's and front-
passenger seat belt .........................47
Adjusting the height ......................... 48
Belt force limiter .............................. 49
Belt tensioner .................................. 49
Cleaning ......................................... 296
Display message ............................ 237
Fastening ......................................... 47
Important safety guidelines .............46
Rear seat belt status indicator ......... 49
Releasing ......................................... 48
Switching belt adjustment on/off
(on-board computer) ...................... 225
Warning lamp ................................. 257
Warning lamp (function) ................... 48
Seats
Adjusting (electrically) .....................94
Adjusting (manually) ........................94
Adjusting the 4-way lumbar sup-
port .................................................. 96
Adjusting the head restraint ............ 94
Cleaning the cover ......................... 296
Correct driver's seat position ........... 92
Important safety notes .................... 93
Seat heating problem ...................... 97
Storing settings (memory function) 101
Switching seat heating on/off ......... 96
Sensors (cleaning instructions) .......294
Service see ASSYST PLUS
Service Centre
see Qualified specialist workshop
Service menu (on-board computer) . 219
Service products Brake fluid ..................................... 344
Coolant (engine) ............................ 344Engine oil .......................................
343
Fuel ................................................ 339
Important safety notes .................. 338
Washer fluid ................................... 345
Service report
see Qualified specialist workshop
Settings
Factory (on-board computer) ......... 225
On-board computer ....................... 220
Setting the air distribution ...............129
Setting the airflow ............................ 129
SETUP (on-board computer) ............. 226
Shifting to neutral (manual trans-
mission) ............................................. 151
Sidebag ................................................ 44
Side lamps Switching on/off ........................... 106
Side windows
Convenience closing ........................ 85
Convenience opening ...................... 85
Important safety notes .................... 83
Opening/closing .............................. 84
Problem (malfunction) .....................86
resetting .......................................... 85
Sliding sunroof
see Panorama sliding sunroof
Snow chains ...................................... 321
Socket Centre console .............................. 279
Luggage compartment ................... 279
Points to observe before use ......... 278
Rear compartment ......................... 279
Specialist workshop ............................ 24
Spectacles compartment .................269
Speed, controlling see Cruise control
Speed Limit Assist
Activating/deactivating the warn-
ing function .................................... 218
Displaying ...................................... 218
Display message ............................ 246
Display message in the multifunc-
tion display .................................... 197
Function/notes ............................. 196
Important safety notes .................. 19616
Index

Outside temperature ...................... 209
Setting (climate control)
................128
TEMPOMAT
Function/notes ............................. 168
Theft-deterrent system
ATA (Anti-Theft Alarm system) .........69
Immobiliser ...................................... 69
Through-loading ................................ 271
Time see Separate Owner's manual
Timing (RACETIMER) .........................226
TIREFIT kit .......................................... 301
Top Tether ............................................ 54
Tow-away protection .......................... 70
Towing Important safety notes .................. 310
Towing a trailer
Active Parking Assist .....................190
Axle load, permissible .................... 349
Bulb failure indicator for LED lamps 206
ESP ®
(Electronic Stability Program) . 68
Pulling away with a trailer ..............145
Trailer tow hitch display message .. 255
Towing away
Fitting the towing eye ....................311
Removing the towing eye ...............312
With both axles on the ground ....... 312
With front axle raised ..................... 312
Tow-starting
Emergency engine starting ............ 314
Fitting the towing eye ....................311
Important safety notes .................. 310
Removing the towing eye ...............312
Trailer coupling
see Towing a trailer
Trailer towing
7-pin connector ............................. 206
Blind Spot Assist ............................ 199
Cleaning the trailer tow hitch ......... 294
Coupling up a trailer ......................204
Decoupling a trailer ....................... 204
Driving tips .................................... 201
Folding in the ball coupling ............205
Folding out the ball coupling ..........203
Important safety notes .................. 201
Lights display message .................. 239
Mounting dimensions .................... 348Parktronic ......................................
185
Power supply ................................. 206
Trailer loads ................................... 349
Transmission
see Automatic transmission
see Manual transmission
Transmission position display
(DIRECT SELECT lever) ......................152
Transporting the vehicle .................. 313
Trim pieces (cleaning instructions) . 295
Trip computer (on-board computer) 211
Trip meter Calling up ....................................... 211
Resetting (on-board computer) ...... 213
Turn signals
Changing bulbs (front) ................... 115
Changing bulbs (rear) .................... 116
Switching on/off ........................... 107
TV
Operating (on-board computer) ..... 215
see Separate operating instructions
Two-way radio
Frequencies ................................... 336
Installation ..................................... 336
Transmission output (maximum) .... 336
Type identification plate
see Vehicle identification plate
Tyre pressure
Display message ............................ 251
Not reached (TIREFIT) .................... 303
Reached (TIREFIT) .......................... 303
Recommended ............................... 321
Tyre pressure loss warning
Important safety notes .................. 323
Restarting ...................................... 323
Tyres
Changing a wheel .......................... 324
Checking ........................................ 319
Direction of rotation ......................324
Display message ............................ 251
Important safety notes .................. 318
M+S tyres ...................................... 320
MOExtended tyres .........................320
Replacing ....................................... 324
Service life ..................................... 319
Storing ........................................... 324
Summer tyres ........................ 168, 32018
Index

G
WARNING
Objects in the driver's footwell can restrict the
pedal travel or obstruct a depressed pedal.
The operating and road safety of the vehicle
is jeopardised. There is a risk of an accident.
Make sure that all objects in the vehicle are
stowed correctly, and that they cannot enter
the driver's footwell. Fit the floormats
securely and as specified in order to ensure
sufficient
clearance for the pedals. Do not use
loose floormats.
! If the engine is switched off and equip-
ment on the diagnostics connection is
used, the starter battery may discharge.
Connecting equipment to the diagnostics
connection can lead to emissions monitoring
information being reset, for example. This
may lead to the vehicle failing to meet the
requirements of the next emissions test dur-
ing the main inspection. Qualified specialist workshop
A qualified specialist workshop has the nec-
essary special skills, tools and qualifications
to correctly carry out any necessary work on
your

vehicle. This particularly applies to work
relevant to safety.
Observe the notes in the Service Booklet.
Always have the following work carried out at
a qualified specialist workshop:
R work relevant to safety
R service and maintenance work
R repair work
R modifications, installations and conver-
sions
R work on electronic components
Mercedes-Benz recommends that you use a
Mercedes-Benz Service Centre. Vehicle registration
Mercedes-Benz may ask its Service Centres
to carry out technical inspections on certain
vehicles. The quality or safety of the vehicle
is improved as a result of the inspection.
Mercedes-Benz can only inform you about
vehicle

checks if it has your registration data.
It is possible that your vehicle has not yet
been registered in your name in the following
cases:
R if your vehicle was not purchased at an
authorised specialist dealer.
R if your vehicle has not yet been examined
at a Mercedes-Benz Service Centre.
It is advisable to register your vehicle with a
Mercedes-Benz Service Centre.
Inform Mercedes-Benz as soon as possible
about any change in address or vehicle own-
ership. Correct use
If you remove any warning stickers, you or
others

could fail to recognise certain dangers.
Leave warning stickers in position.
Observe the following information when driv-
ing your vehicle:
R the safety notes in this manual
R the technical data in this manual
R traffic rules and regulations
R laws and safety standards pertaining to
motor vehicles Implied warranty
! Follow the instructions in this manual
about the proper operation of your vehicle
as well as about possible vehicle damage.
Damage to your vehicle that arises from
culpable contraventions against these
instructions are not covered either by
Mercedes-Benz implied warranty or by the
New or Used-Vehicle Warranty. 24
Introduction

Side window reversing feature
The side windows are equipped with an auto-
matic reversing feature. If a solid object
blocks or restricts a side window during the
closing process, the side window opens again
automatically. However, the automatic
reversing feature is only an aid and does not
relieve you of the responsibility to pay atten-
tion when closing a side window. G
WARNING
The reversing function does not react:
R to

soft, light and thin objects, e.g. small fin-
gers
R over the last 4 mm of the closing movement
R during resetting
R when closing the side window again man-
ually immediately after automatic reversing
This means that the reversing function cannot
prevent someone being trapped in these sit-
uations. There is a risk of injury.
When closing make sure that no parts of the
body are in the closing area. If someone
becomes trapped, press the switch to open
the side window again. Opening and closing the side win-
dows
The

switches for all side windows are located
on the driver's door. There is also a switch on
each door for the corresponding side window.
The switches on the driver's door take prec-
edence. :
Front left
; Front right
= Rear right
? Rear left
i The side windows cannot be operated
from

the rear when the override feature for
the side windows is activated ( Y page 61).
X Turn the key to position 1
or 2 in the ignition
lock.
X To open: press the corresponding switch.
X To open fully: press the corresponding
switch beyond the point of resistance.
Automatic closing is started.
X To close: pull the corresponding switch.
X To close fully: pull the corresponding
switch beyond the pressure point. Auto-
matic closing is started.
X To interrupt the automatic opening/
closing: press/pull the corresponding
switch again.
i If you press the switch beyond the point
of resistance, an automatic opening/clos-
ing

process is started in the corresponding
direction. You can stop automatic opera-
tion by pressing again.
i You can continue to operate the side win-
dows after switching off the engine or
removing the key. This function remains
active for five minutes or until the driver's
or front-passenger door is opened. 84
Side windows
Opening and closing

Convenience opening feature
You can ventilate the vehicle before you start
driving. To do this, the key is used to carry out
the following functions simultaneously:
R unlock the vehicle
R open the side windows
R open the panorama sliding sunroof and the
roller sunblinds
i The convenience opening feature can
only be operated using the key. The key
must be close to the driver's door handle.
X Point the tip of the key at the driver's door
handle.
X Press and hold the % button until the
side windows and the panorama sunroof
are in the desired position.
If

the roller sunblinds of the panorama slid-
ing sunroof are closed, the roller sunblinds
are opened first.
X Press and hold the %
button again until
the panorama sliding sunroof is in the
desired position.
X To interrupt convenience opening:
release the % button.Convenience closing feature
G
WARNING
When the convenience closing feature is oper-
ating,
parts of the body could become trapped
in the closing area of the side window and the
sliding sunroof. There is a risk of injury.
Observe the complete closing procedure
when the convenience closing feature is oper-
ating. When closing make sure that no parts
of the body are in the closing area.
When you lock the vehicle, you can simulta-
neously:
R close the side windows
R close the panorama sliding sunroof
On vehicles with a panorama sliding sunroof,
you can then close the roller sunblinds. i
The
key must be close to the driver's door
handle.
X Point the tip of the key at the driver's door
handle.
X Press and hold the & button until the
side windows and the panorama sliding
sunroof are fully closed.
X Make sure that all the side windows and the
panorama sliding sunroof are closed.
On vehicles with a panorama sliding sunroof:
X Press and hold the &
button again until
the roller sunblinds of the panorama sliding
sunroof close.
X To interrupt convenience closing:
release the & button. Resetting the side windows
You must reset each side window if:
R the side window opens again slightly after
being closed fully.
R the side window can no longer be fully
opened or closed.
X Close all doors.
X Turn the key to position 1
or 2 in the ignition
lock.
X Pull the corresponding switch on the door
control

panel until the side window is com-
pletely closed ( Y page 84).
X Hold the switch for an additional second.
If the side window opens again slightly:
X Immediately pull the corresponding switch
on

the door control panel until the side win-
dow is completely closed (Y page 84).
X Hold the switch for an additional second.
X If the corresponding side window remains
closed after the button has been released,
the side window has been reset correctly.
If this is not the case, repeat the steps
above again. Side windows
85
Opening and closing Z