2012 MERCEDES-BENZ A-CLASS HATCHBACK service indicator

S
Safety Child restraint systems .................... 50
Children in the vehicle ..................... 50
Safety system
see Driving safety systems
Seat
Adjusting (Performance Seat) ..........97
Folding the backrest (rear com-
partment) forwards/back .............. 272
Seat belt
Switching belt adjustment on/off
(on-board computer) ...................... 225
Seat belts
Adjusting the driver's and front-
passenger seat bel t......................... 47
Adjusting the height ......................... 48
Belt force limite r.............................. 49
Belt tensioner .................................. 49
Cleaning ......................................... 296
Display message ............................ 237
Fastening ......................................... 47
Important safety guidelines ............. 46
Rear seat belt status indicator ......... 49
Releasing ......................................... 48
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 func-
tion) ............................................... 101
Switching seat heating on/of f......... 96
Sensors (cleaning instructions) ....... 294
Service
see ASSYST PLUS
Service Centre
see Qualified specialist workshop
Service menu (on-board com-
puter) .................................................. 219 Service products
Brake fluid ..................................... 344
Coolant (engine) ............................ 344
Engine oil ....................................... 343
Fuel ................................................ 339
Important safety notes .................. 338
Washer fluid ................................... 345
Service report
see Qualified specialist workshop
Setting the air distribution ............... 129
Setting the airflow ............................ 129
Settings
Factory (on-board computer) ......... 225
On-board computer ....................... 220
SETUP (on-board computer) ............. 226
Shifting to neutral (manual trans-
mission) ............................................. 151
Side lamps
Switching on/of f........................... 106
Side windows
Convenience closing ........................ 85
Convenience opening ...................... 84
Important safety notes .................... 83
Opening/closing .............................. 84
Problem (malfunction) ..................... 85
Resetting ......................................... 85
Sidebag ................................................ 44
Sliding sunroof
see Panorama sliding sunroof
Snow chains ...................................... 321
Socket
Luggage compartment ................... 279
Points to observe before use ......... 278
Sockets
Centre console .............................. 279
Rear compartment ......................... 279
Specialist workshop ............................ 24
Spectacles compartment ................. 269
Speed Limit Assist
Activating/deactivating the warn-ing function .................................... 218
Display message ............................ 246
Display message in the multifunc-
tion display .................................... 197
Displaying ...................................... 218
Function/note s............................. 196
Important safety notes .................. 196 16
Index

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

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

Do not expose the child restraint system to
direct sunlight. Parts of the child restraint sys- tem could heat up and the child could burn
herself/himself on them.
If a child opens a door, the child or other per-
sons could be injured as a result. They could
get out and injure themselves or be injured by
a passing vehicle.
Observe the general notes on the HOLD func- tion, which can be found under the same key-word. G
WARNING
Unsecured or incorrectly positioned loads
increase the risk of injury for children and all
other occupants in the event of:
R an accident
R sudden braking
R a sudden change of direction
Do not transport heavy or hard objects in the
vehicle interior unless they are secured. You
will find further information under "Loading
guidelines" in the index.
If a child is travelling in your vehicle, secure
the child using a child restraint system which is appropriate to the size, age and weight of
the child. You should preferably fit the
restraint system to a suitable rear seat. Make
sure that the child is secured for the trip.
Mercedes-Benz recommends that you use
the listed child restraint systems
(Y page 58). You can obtain further infor-
mation about the correct child restraint sys-
tem from any Mercedes-Benz Service Centre.
i It is advisable to use Mercedes-Benz care
products to clean child restraint systems.
You can obtain information about this at
any Mercedes-Benz Service Centre. Child restraint system on the front-
passenger seat G
WARNING
If the front-passenger airbag is not disabled:
R a child secured in a child restraint system
on the front-passenger seat could be seri-
ously and even fatally injured by the front-
passenger airbag deploying. This is espe-
cially a risk if the child is in the immediate
vicinity of the front-passenger airbag when
it deploys.
R never secure a child on the front-passenger
seat in a rearward-facing child restraint sys- tem. Only secure a rearward-facing child
restraint system on a suitable rear seat.
R always move the front-passenger seat to
the rearmost position if you secure a child
in a forward-facing child restraint system
on the front-passenger seat.
The front-passenger airbag is not disabled:
R on vehicles without automatic child seat
recognition on the front-passenger seat
R in vehicles with automatic child seat rec-
ognition in the front-passenger seat, if no
special child restraint system with trans-
ponders for automatic child seat recogni-
tion in the front-passenger seat has been
fitted
R on vehicles with automatic child seat rec-
ognition on the front-passenger seat, if the
PASSENGER AIRBAG OFF indicator lamp
4 is not lit.
To make you aware of this danger, a corre-
sponding warning sticker has been affixed on
the dashboard and on both sides of the sun
visor on the front-passenger side.
Information about recommended child
restraint systems is available at any
Mercedes-Benz Service Centre. Children in the vehicle
51Safety Z

The highly flammable gas mixture is formed
when charging the battery or jump-starting
the vehicle.
Always make sure that neither you nor the
battery is electrostatically charged. Electro-
static charge is caused, for example, by:
R wearing synthetic clothing
R the friction of clothing on the seat
R pulling or sliding the battery over carpets or
other synthetic materials
R rubbing the battery with a cloth G
WARNING
During the charging process, a battery produ- ces hydrogen gas. If a short circuit occurs or
sparks are created, the hydrogen gas can
ignite. There is a risk of an explosion.
R Make sure that the positive terminal of a
connected battery does not come into con- tact with vehicle parts.
R Never place metal objects or tools on a bat-
tery.
R It is important that you observe the descri-
bed order of the battery terminals when
connecting and disconnecting a battery.
R When jump-starting, make sure that the
battery poles with identical polarity are
connected.
R It is particularly important to observe the
described order when connecting and dis-
connecting the jump leads.
R Never connect or disconnect the battery
terminals while the engine is running. G
WARNING
Battery acid is caustic. There is a risk of injury. Avoid contact with the skin, eyes or clothing.
Do not inhale any battery gases. Do not lean
over the battery. Keep children away from
batteries. Wash battery acid immediately with water and seek medical attention. H
Environmental note Batteries contain pollutants.
It is illegal to dispose of them
with the household rubbish.
They must be collected sep-
arately and disposed of in anenvironmentally responsible
recycling system. Dispose of batteries in an
environmentally responsible
manner. Take discharged
batteries to a qualified spe-
cialist workshop or to a col-
lection point for used batter-
ies.
! Have the battery checked regularly at a
qualified specialist workshop.
Observe the service intervals in the Service
Booklet or contact a qualified specialist
workshop for more information.
! Always have work on the battery carried
out at a qualified specialist workshop.
Should it, in exceptional circumstances, be
absolutely necessary to disconnect the bat-
tery yourself, please observe the following:
R switch off the engine and remove the
key. Check that all the indicator lamps in the instrument cluster are off. Otherwise,
you may damage electronic components such as the alternator, for example.
R first, disconnect the negative terminal
clamp, followed by the positive terminal
clamp. Never swap the terminal clamps.
The vehicle electronics may otherwise be
damaged.
R on vehicles with automatic transmission,
the transmission is locked in position P
after disconnecting the battery. The vehi-
cle is secured against rolling away. You
can then no longer move the vehicle.
The battery and the cover of the positive
terminal clamp must be fitted securely dur- ing operation. Battery (vehicle)
305Breakdown assistance Z

ing the vehicle or charging the battery, gases
can escape from the battery. There is a risk of
an explosion.
Allow the frozen battery to thaw out before
charging it or jump-starting.
! Only use battery chargers with a maxi-
mum charging voltage of 14.8 V.
! Only charge the battery using the jump-
start connection point.
The jump-starting connection point is in the
engine compartment (Y page 308).
X Open the bonnet (Y page 285).
X Connect the battery charger to the positive
terminal and earth point in the same order
as when connecting the donor battery in
the jump-starting procedure (Y page 308).
If the indicator/warning lamps do not light up at low temperatures, it is very likely that the
discharged battery has frozen. In this case
you may neither jump-start the vehicle nor
charge the battery. The service life of a bat-
tery that has been thawed could be reduced. The starting characteristics may be impaired,
especially at low temperatures. Have the
thawed battery checked at a qualified spe-
cialist workshop.
Only charge the installed battery with a bat-
tery charger which has been tested and
approved by Mercedes-Benz. A battery
charger unit specially adapted for Mercedes- Benz vehicles and tested and approved by
Mercedes-Benz is available as an accessory.
It permits the charging of the battery in its
installed position. Contact a Mercedes-Benz
Service Centre for information and availabil-
ity. Read the battery charger's operating
instructions before charging the battery. Battery (vehicle)
307Breakdown assistance Z

Jump-starting
For the jump-starting procedure, use only the jump-starting connection point, consisting of a positive terminal and an earth point, in the engine compartment. G
WARNING
Battery acid is caustic. There is a risk of injury.
Avoid contact with the skin, eyes or clothing. Do not inhale any battery gases. Do not lean over the battery. Keep children away from batteries. Wash battery acid immediately with water and seek
medical attention. G
WARNING
During charging and jump-starting, explosive gases can escape from the battery. There is a risk of an explosion.
Particularly avoid fire, naked flames, creating sparks and smoking. Ensure there is sufficient
ventilation while charging and jump-starting. Do not lean over a battery. G
WARNING
During the charging process, a battery produces hydrogen gas. If a short circuit occurs or sparks
are created, the hydrogen gas can ignite. There is a risk of an explosion.
R Make sure that the positive terminal of a connected battery does not come into contact with
vehicle parts.
R Never place metal objects or tools on a battery.
R It is important that you observe the described order of the battery terminals when connecting
and disconnecting a battery.
R When jump-starting, make sure that the battery poles with identical polarity are connected.
R It is particularly important to observe the described order when connecting and disconnecting
the jump leads.
R Never connect or disconnect the battery terminals while the engine is running. G
WARNING
A discharged battery can freeze at temperatures below freezing point. When jump-starting the
vehicle or charging the battery, gases can escape from the battery. There is a risk of an explosion.
Allow the frozen battery to thaw out before charging it or jump-starting. G
WARNING
Non-combusted fuel can collect in the exhaust system and ignite. There is a risk of fire. Avoid
repeated and lengthy starting attempts.
! Vehicles with a petrol engine:
avoid repeated and lengthy starting attempts. Otherwise,
the non-combusted fuel may damage the catalytic converter.
If the indicator/warning lamps do not light up at low temperatures, it is very likely that the
discharged battery has frozen. In this case you may neither jump-start the vehicle nor charge
the battery. The service life of a battery that has been thawed could be reduced. The starting 308
Jump-startingBreakdown assistance

i
The tyre pressure values given for low
loads are minimum values which offer you
good ride comfort characteristics.
However, you can also use the values given for higher loads. These are permissible andwill not adversely affect the running of the
vehicle. Tyre pressure loss warning system
Important safety notes While the vehicle is in motion, the tyre pres-
sure loss warning system monitors the set
tyre pressure using the rotational speed of
the wheels. This enables the system to detect
significant pressure loss in a tyre. If the speed of rotation of a wheel changes as a result of a
loss of pressure, a corresponding warning
message will appear in the multifunction dis- play.
The tyre pressure warning system does not
warn you of an incorrectly set tyre pressure.
Observe the notes on the recommended tyre pressure (Y page 321).
The tyre pressure loss warning system does
not replace the need to regularly check your
vehicle's tyre pressures, since an even loss of pressure on several tyres at the same time
cannot be detected by the tyre pressure loss
warning system.
The tyre pressure monitor is not able to warn you of a sudden loss of pressure, e.g. if the
tyre is penetrated by a foreign object. In the
event of a sudden loss of pressure, bring the
vehicle to a halt by braking carefully. Avoid
abrupt steering manoeuvres.
The function of the tyre pressure loss warning
system is limited or delayed if:
R snow chains are fitted to your vehicle's
tyres.
R road conditions are wintry.
R you are driving on sand or gravel.
R you adopt a very sporty driving style (cor-
nering at high speeds or driving with high
rates of acceleration). R
you are towing a very heavy or large trailer.
R you are driving with a heavy load (in the
vehicle or on the roof).
Restarting the tyre pressure loss warn-
ing system Restart the tyre pressure loss warning system
if you have:
R changed the tyre pressure
R changed the wheels or tyres
R fitted new wheels or tyres
X Before restarting, make sure that the tyre
pressures are set properly on all four tyres
for the respective operating conditions.
The recommended tyre pressures can be
found in the table on the fuel filler flap.
The tyre pressure loss warning system can only give reliable warnings if you have set
the correct tyre pressure. If an incorrect
tyre pressure is set, these incorrect values
will be monitored.
X Observe the notes on tyre pressure
(Y page 321).
X Make sure that the key is in posi-
tion 2(Ypage 143) in the ignition lock.
X Press the =or; button on the steer-
ing wheel to select the Service
Service menu.
X Press the 9or: button to select
Tyre pressure
Tyre pressure.
X Press the abutton.
The Run Flat Indicator active Run Flat Indicator active
Restart
Restart with
withOK
OKmessage appears in the
multifunction display.
If you wish to confirm the restart: X Press the abutton.
The Tyre press. now OK?
Tyre press. now OK? message
appears in the multifunction display.
X Press the 9or: button to select
Yes
Yes.
X Press the abutton.
The Run Flat Indicator restarted
Run Flat Indicator restarted
message appears in the multifunction dis-
play. Tyre pressure
323Wheels and tyres Z