2012 MERCEDES-BENZ A-CLASS HATCHBACK height

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

tion instructions of the child restraint sys-
tem manufacturer.
R Do not secure an object with a seat belt if
the seat belt is also being used by one of the
vehicle's occupants. G
WARNING
The seat belt does not offer the intended level of protection unless the backrest is almost
vertical. Under certain circumstances, this
could cause severe or even fatal injuries in the
event of an accident.
Before starting a journey, make sure that the seat is properly adjusted and that the back-
rest is almost vertical. G
WARNING
A dirty or damaged seat belt or one that has
been modified or subjected to a load in an
accident no longer offers the intended level of protection. Under certain circumstances, this
could cause severe or even fatal injuries in the
event of an accident.
For this reason, check regularly that the seat
belts are not damaged or dirty.
Always have damaged seat belts or seat belts that have been subjected to a load in an acci-dent replaced at a qualified specialist work-
shop.
For safety reasons, Mercedes-Benz recom-
mends that you only use seat belts which have been approved by Mercedes-Benz for your
vehicle.
Seat belts are the most effective means of
restraining the movement of vehicle occu-
pants in the event of an accident. This
reduces the risk of vehicle occupants coming
into contact with parts of the vehicle interior. Fastening seat belts
X
Adjust the seat and move the backrest to
an almost vertical position (Y page 92).
X Pull the seat belt smoothly through belt
sash guide :.
X Without twisting it, guide the shoulder sec-
tion of the seat belt across the middle of
your shoulder and the lap section across
your pelvis.
X Engage belt tongue ;in buckle =.
Seat belt adjustment: if necessary, the driv-
er's and front-passenger seat belts auto-
matically adjust to the upper body
(Y page 47).
X If necessary, adjust the seat belt to the
appropriate height (Y page 48).
X If necessary, pull upwards on the shoulder
section of the seat belt to tighten the belt
across your body.
Information on releasing the seat belt with
release button ?(Ypage 48).
Seat belt adjustment The seat-belt adjustment function adjusts the
driver's and front-passenger seat belt to the
upper body of the occupants. Occupant safety
47Safety Z

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 2in 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 pro-
tection)" 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 contin- uously 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 7seat
belt warning lamp lights up for six seconds
after the engine is started. It then goes out if 48
Occupant safetySafety

Seat positions
Weight catego-
ries Front-passenger seat
Rear seat
1 Front-
passenger
front airbag is
not disabled Front-
passenger
front airbag is
disabled Left, right Centre
Category 0: up
to 10 kg X
U
2, 3
, L2, 3 U, L U, L
Category 0+:
up to 13 kg
X
U
2, 3
, L2, 3 U, L U, L
Category I:
9to
18 kg UF
3
, L 3 U
3
, L 3 U, L U, L
Category II: 15
to 25 kg UF
3
, L 3 U
3
, L 3 U, L U, L
Category III:
22 to 36 kg
UF
3
, L 3 U
3
, L 3 U, L U, L
"Universal" category child restraint systems can be recognised by their orange approval label.
Example: approval label on the child restraint system
1 If you use a category 0 or 0+ baby car seat on a rear seat, you must adjust the driver's or front-passenger seat
so that the seat does not come in contact with the baby car seat.
2 Vehicles with automatic child seat recognition in the front-passenger seat: a child restraint system of the
"Universal" category with a transponder for automatic child seat recognition must be fitted. The 45
indicator lamp must be on.
3 Move the front-passenger seat to the rearmost and highest position, the backrest to an almost vertical
position, and the belt height adjustment to the lowest position. For seats with electrical adjustment, the seat
cushion angle must be set to the highest and most upright position. Children in the vehicle
57Safety Z

Seats
Important safety notes
G
WARNING
If children adjust the seats, they could
become trapped, especially if they are unat-
tended. There is a risk of injury.
When leaving the vehicle, always take the key with you and lock the vehicle. Never leave
children unattended in the vehicle. G
WARNING
You could lose control of the vehicle while
driving if you:
R adjust the driver's seat, steering wheel or
mirrors
R fasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirrors and fasten your seat
belt before starting the engine. G
WARNING
If you adjust the seat height carelessly, you or other vehicle occupants could be trapped andthereby injured. Children in particular could
accidentally press the electrical seat adjust-
ment buttons and become trapped. There is a
risk of injury.
While moving the seats, make sure that your
hands or other body parts do not get under the
lever assembly of the seat adjustment sys-
tem. G
WARNING
When adjusting a seat, you or another vehicle occupant could become trapped by the guiderail of the seat, for instance. There is a risk of
injury.
Make sure that no one has any part of their
body within the sweep of the seat when
adjusting it. G
WARNING
The seat belt does not offer the intended level of protection if the backrest is not in the
upright position. When braking or in the event
of an accident, you could slide underneath the
seat belt and sustain abdomen or neck inju-
ries, for example. This poses an increased risk of injury or even fatal injury.
Adjust the seat properly before beginning
your journey. Always make sure that the seat
is in the upright position. G
WARNING
The head restraints cannot provide the inten-
ded protection unless they are fitted and
adjusted correctly. There is an increased risk of injury to the head and neck in the event of
an accident or sudden braking, for example.
Always drive with the head restraints fitted.
Ensure that the centre of the head restraints
support the back of each vehicle occupant's
head at eye level before driving off.
! To avoid damage to the seats and the seat
heating, observe the following information:
R do not spill any liquids on the seats. If
liquid is spilled on the seats, dry them as
soon as possible.
R if the seat covers are damp or wet, do not
switch on the seat heating. The seat
heating should also not be used to dry
the seats.
R clean the seat covers as recommended;
see the "Interior care" section.
R do not transport heavy loads on the
seats. Do not place sharp objects on the
seat cushions, e.g. knives, nails or tools.
The seats should only be occupied by
passengers, if possible.
R when the seat heating is in operation, do
not cover the seats with insulating mate-
rials, e.g. blankets, coats, bags, seat cov- ers, child seats or booster seats.
! Make sure that there are no objects in the
footwell or behind the seats when moving Seats
93Seats, steering wheel and mirrors Z

the seat back. There is a risk that the seats
and/or the objects could be damaged.
i The head restraints in the front and rear
seats can be removed. 7
For more information, contact a qualified
specialist workshop.
i Further related subjects:
R Luggage compartment enlargement
(folding down the rear seats)
(Y page 271) Adjusting the seats manually
Seat fore-and-aft adjustment
X
Lift handle :and slide the seat forwards
or rearwards.
X Release lever :again.
Make sure that you hear the seat engage in
position.
Backrest angle X
Relieve the pressure on the backrest.
X Turn handwheel ?forwards or backwards.
Seat height X
Pull handle =upwards or push it down
repeatedly until the seat has reached the
desired height. Seat cushion angle Adjust the angle so that your thighs are lightly
supported.
X Turn handwheel ;forwards or backwards. Adjusting the seats electrically
:
Head restraint height 8
; Seat cushion angle
= Seat height
? Seat fore-and-aft adjustment
A Backrest angle
i You can store the seat settings using the
memory function (Y page 101). Adjusting the head restraints
G
WARNING
You could lose control of the vehicle while
driving if you:
R adjust the driver's seat, steering wheel or
mirrors
R fasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirrors and fasten your seat
belt before starting the engine.
7 Not on vehicles with sports seats.
8 Not available on vehicles with sports seats. 94
SeatsSeats, steering
wheel and mirrors

G
WARNING
The head restraints cannot provide the inten-
ded protection unless they are fitted and
adjusted correctly. There is an increased risk of injury to the head and neck in the event of
an accident or sudden braking, for example.
Always drive with the head restraints fitted.
Ensure that the centre of the head restraints
support the back of each vehicle occupant's
head at eye level before driving off.
General notes For vehicles with sports seats, you cannot
adjust the head restraints or remove and fit
the rear head restraints.
Adjusting the head restraints manually Adjusting the head restraint height
X
To raise: pull the head restraint up to the
desired position.
X To lower: press release catch :in the
direction of the arrow and push the head
restraint down to the desired position. Adjusting the head restraint fore-and-aft
position This function allows you to adjust the dis-
tance between the head restraint and the
back of the head.
X To move forwards: pull the head restraint
forwards in the direction of the arrow until
it engages.
There are a number of detents.
X To move backwards: press and hold
release button :and push the head
restraint backwards.
X When the head restraint is in the desired
position, release the button and make sure
that the head restraint is engaged in posi-
tion.
Adjusting the head restraints electri-
cally X
To adjust the head restraint height: slide
the switch for head restraint adjustment
(Y page 94) up or down in the direction of
the arrow. Seats
95Seats, steering wheel and mirrors Z

Rear seat head restraints
Adjusting the rear seat head restraint
height
X
To raise: pull the head restraint up to the
desired position.
X To lower: press release catch :and push
the head restraint down until it is in the
desired position.
Removing and fitting the rear seat head
restraints G
WARNING
The head restraints cannot provide the inten-
ded protection unless they are fitted and
adjusted correctly. There is an increased risk of injury to the head and neck in the event of
an accident or sudden braking, for example.
Always drive with the head restraints fitted.
Ensure that the centre of the head restraints
support the back of each vehicle occupant's
head at eye level before driving off.
The rear head restraints on the outer seats
can be removed and refitted. X
Fold the seat backrest slightly forwards in
order to remove the head restraint
(Y page 272).
X To remove: pull the head restraint up to
the stop.
X Press release catch :and pull the head
restraint out of the guides.
X To refit: insert the head restraint so that
the notches on the bar are on the left when viewed in the direction of travel.
X Push the head restraint down until you hear
it engage in position. Adjusting the 4-way lumbar support
You can adjust the contour of the front seat
backrests individually to provide optimum
support for your back. :
To raise the backrest contour
; To soften the backrest contour
= To lower the backrest contour
? To harden the backrest contour Switching the seat heating on/off
Switching on/off G
WARNING
If you repeatedly switch on seat heating, the
seat cushion and backrest padding may
become very hot. The health of vehicle occu-
pants with limited temperature sensitivity or a limited ability to react to excessively high
temperatures may be affected or they may 96
SeatsSeats, steering wheel and mirrors