2012 MERCEDES-BENZ A CLASS lock

Speedometer
Activating/deactivating the addi-
tional speedometer ........................220
Digital ............................................ 212
In the Instrument cluster
.................30
Segments ...................................... 209
Selecting the unit of measurement 220
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 speed .............. 172
Variable ......................................... 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 paddles ........................... 156
Important safety notes .................... 98
Steering wheel gearshift paddles ....156
Stopwatch (RACETIMER) ................... 226
Stowage areas ................................... 269
Stowage compartment Spectacles compartment ...............269
Stowage compartments
Armrest (front) ............................... 270
Armrest (under) ............................. 270Centre console ..............................
269
Centre console (rear) ..................... 271
Cup holder
..................................... 275
Glove compartment ....................... 269
Important safety information ......... 269
Luggage net ................................... 271
Under driver's seat/front-
passenger seat .............................. 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
Tailgate Display message

............................ 254
Emergency unlocking .......................83
Important safety notes .................... 82
Opening/closing (from outside) ....... 82
Opening dimensions ...................... 346
Tail lamps
Display message ............................ 241
see Lights
Technical data
Capacities ...................................... 338
Emergency spare wheel ................. 333
Information .................................... 336
Trailer loads ................................... 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
Temperature
Coolant .......................................... 208
Coolant (on-board computer) ......... 226
Engine oil (on-board computer) ...... 226 Index
17

Tyre size (data)
.............................. 329
Tyre tread ...................................... 319
see Flat tyre
U
Unladen weight ................................. 346
Unlocking Emergency unlocking .......................81
From inside the vehicle (central
unlocking button) ............................. 80V
Vanity mirror (in sun visor) .............. 277
Variable SPEEDTRONIC see SPEEDTRONIC


Vehicle
Correct use ...................................... 24
Data acquisition ............................... 25
Electronics ..................................... 336
Equipment ....................................... 22
Implied warranty .............................. 24
Individual settings ..........................220
Leaving parked up ......................... 164
Locking (in an emergency) ............... 81
Locking (key) ................................... 75
Lowering ........................................ 329
Pulling away ................................... 144
Raising ........................................... 326
Registration ..................................... 24
Securing from rolling away ............325
Towing away .................................. 310
Tow-starting ................................... 310
Transporting .................................. 313
Unlocking (in an emergency) ........... 81
Unlocking (key) ................................ 75
Vehicle data ................................... 346
Vehicle data ....................................... 346
Vehicle dimensions ...........................346
Vehicle emergency locking ................81
Vehicle identification number see VIN
Vehicle identification plate ..............338
Vehicle maintenance see ASSYST PLUS
Vehicle tool kit .................................. 299
Vehicle weights ................................. 346Video (DVD)
........................................
215
Video DVD (on-board computer) ......215
VIN ...................................................... 338 W
Warning and indicator lamps ABS

................................................ 258
Brakes ........................................... 258
Distance warning signal ................. 266
ESP ®
.............................................. 260
ESP ®
OFF ....................................... 261
Fuel tank ........................................ 264
LIM (cruise control) ........................ 169
LIM (DISTRONIC PLUS) .................. 174
LIM (variable SPEEDTRONIC) ......... 171
Overview .......................................... 32
PASSENGER AIRBAG OFF ................ 52
Reserve fuel ................................... 264
Seat belt ........................................ 257
SRS ................................................ 263
Warning triangle ................................ 298
Washer fluid
Display message ............................ 256
Wheel bolt tightening torque ...........329
Wheel chock ...................................... 325
Wheels Changing/replacing .......................324
Changing a wheel .......................... 324
Checking ........................................ 319
Cleaning ......................................... 292
Cleaning (warning) .........................324
Emergency spare wheel ................. 332
Fitting a new wheel ........................328
Fitting a wheel ............................... 325
Important safety notes .................. 318
Removing a wheel ..........................328
Storing ........................................... 324
Tightening torque ........................... 329
Wheel size/tyre size ......................329
Windowbag
Display message ............................ 239
Operation ......................................... 45
Windows
Cleaning ......................................... 293
see Side windows
Windscreen
Demisting ...................................... 130 Index
19

Cockpit
Function Page
:
Steering wheel gearshift
paddles
156
;
Combination switch 107
=
Instrument cluster 30
?
Horn
A
DIRECT SELECT lever 151
B
PARKTRONIC warning dis-
play
182
C
Overhead control panel 36
D
Climate control systems
122 Function Page
E
Ignition lock 143
F
Adjusting the steering
wheel
98
G
Cruise control lever 169
H
Electric parking brake 163
I
Light switch 105
J
Diagnostics connection 23
K
Opening the bonnet 28528
CockpitAt a glance

Function Page
:
Overhead control panel 36
;
PARKTRONIC warning dis-
play
182
=
Combination switch 107
?
Instrument cluster 30
A
Horn
B
DIRECT SELECT lever 151
C
Steering wheel gearshift
paddles
156
D
Light switch
105 Function Page
E
Electric parking brake 163
F
Opening the bonnet 285
G
Diagnostics connection 23
H
Ignition lock 143
I
Adjusting the steering
wheel
98
J
Cruise control lever 169
K
Climate control systems 122Cockpit
29At a glance

Door control panel
Function Page
:
Opens the door 80
;
%& Unlocks/locks
the vehicle
80
=
r45=
Saves
the seat and exterior mirror
settings 101
?
Adjusts the seats electri-
cally
94
A
7Zö\
Adjusts and folds the exte-
rior mirrors in/out electri-
cally
99 Function Page
B
W Opens/closes the
side windows
84
C
n Activates/deacti-
vates the override feature
for the side windows in the
rear compartment
61Door control panel
37
At a glance

PRE-SAFE
®
takes pre-emptive measures to
protect occupants in certain hazardous sit-
uations.
PRE-SAFE ®
intervenes:
R when BAS activates, e.g. in emergency
braking situations
R when adaptive Brake Assist intervenes
powerfully on vehicles with DISTRONIC
PLUS
R in
critical driving situations, e.g. when phys-
ical limits are exceeded and the vehicle
understeers or oversteers severely
PRE-SAFE ®
takes the following measures
depending on the hazardous situation detec-
ted:
R the front seat belts are pre-tensioned.
R vehicles with the memory function: the
front-passenger seat is adjusted if it is in an
unfavourable position.
R if the vehicle skids, the panorama sliding
sunroof and the side windows are closed so
that only a small gap remains.
If the hazardous situation passes without
resulting in an accident, PRE-SAFE ®
slackens
the belt pretensioning. All settings made by
PRE-SAFE ®
can then be reversed.
If the seat belts are not released:
X Move the backrest or seat back slightly, but
only when the vehicle is stationary.
The belt pretensioning is reduced and the
locking mechanism is released.
More information about seat belt adjustment,
a convenience function integrated into PRE-
SAFE

(Y page 47). Seat belts
Important safety notes G
WARNING
A seat belt which is not worn correctly, or
which has not been engaged in the seat belt
buckle

correctly, cannot provide the intended
level of protection. Under certain circumstan- ces, this could cause severe or even fatal inju-
ries in the event of an accident.
Therefore, make sure that all occupants — in
particular,

pregnant women — wear their seat
belts correctly at all times.
R The seat belt must fit snugly on your body
and must not be twisted.Therefore, avoid
wearing bulky clothing, e.g. a winter coat.
The shoulder section of the belt must be
routed across the centre of your shoulder
— on no account across your neck or under
your arm — and pulled tight against your
upper body. The lap belt must always pass
across your lap as low down as possible, i.e.
over your hip joints — not across your abdo-
men. If necessary, push the seat belt
slightly downwards and adjust it by pulling
it in the direction the seat belt retracts.
R Do not route the seat belt strap over sharp
or fragile objects. Please make sure that
such objects are not on or in your clothing,
e.g. spectacles, pens or keys etc. The seat
belt strap could become damaged and tear
during an accident and you or other vehicle
occupants could be injured.
R Only one person should use each seat belt
at any one time. Children must never travel
sitting on the lap of another occupant. The
child will not be secured in the event of an
accident, heavy braking or sudden change
of direction. This may result in the child or
other occupants being seriously or fatally
injured.
R Persons under 1.50 m tall cannot wear the
seat belts correctly. For this reason secure
persons less than 1.50 m tall in specially
designed, suitable restraint systems.
R Children under 1.50 m tall and younger
than twelve years of age cannot wear the
seat belts correctly. For this reason secure
them in special suitable child restraint sys-
tems installed on a suitable seat. Additional
information can be found in the Operating
Instructions in the chapter "Safety", "Chil-
dren in the Vehicle". Observe the installa-46
Occupant safety
Safety

The belt strap is tightened slightly when:
R
you engage the belt tongue in the belt
buckle
and you then turn the key to position
2 in the ignition lock.
R the key is in position 2 in the ignition lock
and you then engage the belt tongue in the
buckle.
The seat-belt adjustment will apply a certain
tightening force if any slack is detected
between the occupant and the seat belt. Do
not hold on to the seat belt tightly while it is
adjusting. You can switch the seat-belt
adjustment on and off in the on-board com-
puter ( Y page 225).
The seat-belt adjustment is an integral part of
the PRE-SAFE ®
convenience function. More
information about PRE-SAFE ®
can be found
in the "PRE-SAFE ®
(preventative occupant
protection)" section (Y page 45).
Belt height adjustment You can adjust the belt height for the front
seats. Adjust the belt to a height that allows
the upper part of the seat belt to be routed
across the centre of your shoulder.
X
To raise:
slide the belt sash guide upwards.
The belt sash guide engages in various posi-
tions.
X To lower: press and hold belt sash guide
release :.
X Slide the belt sash guide downwards.
X Let go of belt sash guide release : and
make sure that the belt sash guide has
engaged. Releasing the seat belts !
Make
sure that the seat belt is fully rolled
up. Otherwise, the seat belt or belt tongue
will be trapped in the door or in the seat
mechanism. This could damage the door,
the door trim panel and the seat belt. Dam-
aged seat belts can no longer fulfil their
protective function and must be replaced.
Visit a qualified specialist workshop. X
Press release button ?
on belt buckle =.
X Guide belt tongue ; back to belt sash
guide :.
Belt warning for the driver and front
passenger The
7
seat belt warning lamp in the instru-
ment cluster is a reminder for all occupants
to fasten their seat belts. It may light up con-
tinuously or flash. In addition, a warning tone
may sound.
The 7 seat belt warning lamp goes out and
the warning tone ceases when the driver and
the front passenger have fastened their seat
belt.
For certain countries only: regardless of
whether the driver and the front passenger
have fastened their seat belts, the 7 seat
belt warning lamp lights up for six seconds
after the engine is started. It then goes out if 48
Occupant safety
Safety

the driver and the front passenger have fas-
tened their seat belts.
i
For more information on the 7 seat
belt warning lamp, see "Warning and indi-
cator
lamps in the instrument cluster, seat
belt" ( Y page 257).
Rear seat belt status indicator Example: rear seat belt status indicator
The rear-compartment seat belt status indi-
cator

indicates the rear seat on which the belt
is fastened. In the example, the occupant on
the right rear seat, when viewed in the direc-
tion of travel, is secured. The ü symbol in
the display indicates a fastened seat belt. If a
seat belt is not fastened or if a seat is not
occupied, the ý symbol is displayed.
The rear-compartment seat belt status indi-
cator appears in the multifunction display for
around 30 seconds if:
R you drive off and reach a speed of approx-
imately 10 km/h.
R the rear passengers fasten or unfasten
their seat belts while the vehicle is in
motion.
R someone gets in or out of the vehicle and
the vehicle drives off again.
You can also cancel the rear seat belt status
indicator immediately ( Y page 229).
i The status indicator for the rear-compart-
ment seat belts is only available for certain
countries.
Belt tensioners, belt force limiters G
WARNING
If the seat belt tensioners have been trig-
gered, they provide no additional protection in the event of another accident. Therefore,
have belt tensioners which have been trig-
gered replaced at a qualified specialist work-
shop.
Comply with safety regulations when dispos-
ing of belt tensioners. Any Mercedes-Benz
Service Centre can provide details of these
regulations.
! If the front-passenger seat is not occu-
pied,

do not engage the seat belt tongue in
the buckle on the front-passenger seat.
Otherwise, the belt tensioner could be trig-
gered in the event of an accident.
The front seat belts and the outer seat belts
in the rear are equipped with belt tensioners
and belt force limiters.
The belt tensioners tighten the seat belts in
an accident, pulling them close against the
body.
Belt tensioners do not correct incorrect seat
positions or incorrectly fastened seat belts.
Belt tensioners do not pull vehicle occupants
back towards the backrest.
The belt tensioners can only be activated
when:
R the ignition is switched on.
R the restraint systems are operational; see
"6 SRS warning lamp" (Y page 41).
R the belt tongue is engaged in the buckle on
each of the front seat belts.
The belt tensioners on the outside seats in the
rear compartment are triggered independ-
ently of the lock status of the seat belts.
The belt tensioners are triggered depending
on the type and severity of an accident:
R if, in the event of a head-on or rear-end col-
lision the vehicle decelerates or acceler-
ates rapidly in a longitudinal direction dur-
ing the initial stages of the impact
R if, in the event of a side impact, on the side
opposite the impact the vehicle deceler- Occupant safety
49
Safety Z