2012 MERCEDES-BENZ A-CLASS HATCHBACK display

Important safety notes .................. 318
M+S tyres ...................................... 320
MOExtended tyres .........................3
20
Replacing ....................................... 324
Service life ..................................... 319
Storing .......................................... .324
Summer tyres ........................ 168, 320
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
Tow-starting ................................... 310
Towing away .................................. 310
Transporting .................................. 313
Unlocking (in an emergency) ........... 81
Unlocking (key) ................................ 75
Vehicle data ................................... 346
Vehicle data ....................................... 346
Vehicle dimensions ........................... 346
Vehicle emergency locking ................ 81Vehicle identification number
see VIN
Vehicle identification plate .............. 338
Vehicle maintenance
see ASSYST PLUS
Vehicle tool kit .................................. 299
Vehicle weights ................................. 346
Video (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 fue l................................... 264
Seat belt ........................................ 257
SRS ................................................ 263
Warning triangle ................................ 298
Washer fluid
Display message ............................ 256
Wheel bolt tightening torque ........... 329
Wheel chock ...................................... 325
Wheels
Changing a whee l.......................... 324
Changing/replacing ....................... 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 whee l.......................... 328
Storing ........................................... 324
Tightening torque ........................... 329
Wheel size/tyre size ...................... 329 Index
19

Windowbag
Display message ............................ 239
Operation ......................................... 45
Windows
Cleaning ......................................... 293
see Side windows
Windscreen
Demisting ...................................... 130
Windscreen washer fluid
see Windscreen washer system
Windscreen washer system
Notes ............................................. 345
Topping up .................................... .289
Windscreen wipers
Display message ............................ 256
Problem (malfunction) ................... 120
Rear window wiper ........................ 117
Replacing the wiper blades ............ 117
Switching on/off ........................... 116
Windscreen wipers
see Windscreen
Winter driving
General notes ................................ 320
Winter operation
Slippery road surfaces ................... 168
Snow chains .................................. 321
Winter tyres
Limiting the speed (on-board com-
puter) ............................................. 223
M+S tyres ...................................... 320
Wiper blades
Cleaning ......................................... 293
Important safety notes .................. 117
Replacing (on the rear window) ..... 118
Replacing (windscreen) .................. 118
Wooden trim (cleaning instruc-
tions) ................................................. .295
Workshop
see Qualified specialist workshop Z
ZONE function Switching on/off ........................... 129 20
Index

Instrument cluster
Displays and controls
i
Instrument cluster: kilometres Function Page
:
Speedometer with seg-
ments
209
;
Multifunction display 210
=
Rev counter 208 Function Page
?
Coolant temperature 208
A
Fuel gauge
B
Instrument cluster lighting 20830
Instrument clusterAt a glance

i
Instrument cluster: miles Function Page
:
Speedometer with seg-
ments 209
;
Multifunction display 210
=
Rev counter 208 Function Page
?
Coolant temperature 208
A
Fuel gauge
B
Instrument cluster lighting 208Instrument cluster
31At a glance

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

the driver and the front passenger have fas-
tened their seat belts.
i For more information on the
7seat
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 üsymbol in
the display indicates a fastened seat belt. If a seat belt is not fastened or if a seat is not
occupied, the ýsymbol is displayed.
The rear-compartment seat belt status indi-
cator appears in the multifunction display for
around 30 second s if:
R you drive of f 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
49Safety Z

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 258) and
display messages which may be shown in the
instrument cluster (Y page 230).
ABS regulates brake pressure in such a way
that the wheels do not lock when you brake.
This allows you to continue steering the vehi-
cle when braking.
ABS works from a speed of about 8 km/h
upwards, regardless of road-surface condi-
tions. ABS works on slippery surfaces, even
when you only brake gently.
The ! ABS warning lamp in the instrument
cluster lights up when the ignition is switched on. It goes out when the engine is running.
Braking 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, and func-
tions as a reminder to take extra care while
driving. BAS (Brake Assist)
i Observe the "Important safety notes" sec-
tion (Y page 61). 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.
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.
The brakes will function as usual once you
release the brake pedal. BAS is deactivated. COLLISION PREVENTION ASSIST
General notes COLLISION PREVENTION ASSIST consists of
the adaptive Brake Assist and the distance
warning signal, which are described in the
following.
Distance warning function Important safety notes
i Observe the "Important safety notes" sec-
tion for driving safety systems (Y page 61). 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. 62
Driving safety systemsSafety

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 X To activate/deactivate: activate or deac-
tivate the distance warning function in the
on-board computer (Y page 218).
Vehicles with a black and white multi-
function display: when the distance warning
function is activated, the Äsymbol
appears in the status overview in the multi-
function display.
Vehicles with a colour multifunction dis-
play: when the distance warning function is
deactivated, the æsymbol appears in the
assistance graphics in the multifunction dis-
play.
The distance warning function can help you to
minimise the risk of a front-end collision with a vehicle ahead 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. With- out your intervention, the distance warning
function cannot prevent a collision.
The distance warning function issues a warn- ing at speeds:
R of around 30 km/h or more, if, over several
seconds, the distance maintained to the
vehicle travelling in front is insufficient. The · distance warning lamp then lights up
in the instrument cluster.
R of around 7 km/h or higher, if you very
quickly approach a vehicle in front. An
intermittent warning tone will then sound,
and the ·distance warning lamp will
light up in the instrument cluster. 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 around 70 km/h, the dis-
tance warning function can also react to sta-
tionary obstacles, such as stopped or parked vehicles.
If you approach an obstacle and the distance
warning function detects a risk of a collision,
the system will alert you both visually and
acoustically.
In particular, the detection of obstacles can
be impaired in the case of:
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
R a vehicle travelling in front on a different
line
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.
Adaptive Brake Assist i
Observe the "Important safety notes" sec-
tion for driving safety systems (Y page 61). Driving safety systems
63Safety Z