2012 MERCEDES-BENZ A-CLASS HATCHBACK seat memory

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

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 mtall 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 safetySafety

Useful information
..............................92
Correct driver's seat position ............92
Seats .................................................... 93
Steering wheel .................................... 98
Mirrors ................................................. 98
Memory functions .............................101 91Seats, steering wheel and mirrors

Useful information
i This Owner's Manual describes all mod-
els, series and optional equipment for your
vehicle that were available at the time of
going to press. National variations are pos- sible. Note that your vehicle may not be
equipped with all of the functions descri-
bed. This is also the case for systems and
functions relevant to safety.
i Read the information on qualified special-
ist workshops: (Y page 24). Correct driver's seat position
Observe the safety guidelines on seat adjust-
ment (Y page 93).
X Make sure that seat =is correctly adjus-
ted.
Manual seat adjustment (Y page 94)
Electrical seat adjustment (Y page 94)
When adjusting the seat, make sure that:
R you are as far away from the driver's air-
bag as possible.
R you are sitting in a normal upright posi-
tion.
R you can fasten the seat belt properly. R
you have moved the backrest to an
almost vertical position.
R you have set the seat angle so that your
thighs are gently supported.
R you can depress the pedals properly.
X Check whether the head restraint is adjus-
ted properly (Y page 94).
When doing so, make sure that you have
adjusted the head restraint so that the back of your head is supported at eye level by the
centre of the head restraint.
Observe the safety guidelines on steering
wheel adjustment (Y page 98).
X Make sure that steering wheel :is adjus-
ted correctly.
Adjusting the steering wheel
(Y page 98)
When adjusting the steering wheel, make
sure that:
R you can hold the steering wheel with your
arms slightly bent.
R you can move your legs freely.
R you can see all the displays in the instru-
ment cluster clearly.
Observe the safety guidelines for seat belts
(Y page 46).
X Check whether you have fastened seat
belt ;properly (Y page 47).
The seat belt should:
R fit snugly across your body
R be routed across the middle of your
shoulder
R be routed in your pelvic area across the
hip joints
X Before starting off, adjust the rear-view mir-
ror and the exterior mirrors (Y page 99)
so that you have a good view of road and
traffic conditions.
X Vehicles with a memory function: save
the seat and exterior mirror settings
(Y page 101). 92
Correct driver's seat positionSeats, steering wheel and mirrors

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

Folding the exterior mirrors in/out
automatically If the "Fold in mirrors when locking" function
is activated in the on-board computer
(Y page 225):
R the exterior mirrors fold in automatically as
soon as you lock the vehicle from the out-
side.
R the exterior mirrors fold out again automat-
ically as soon as you unlock the vehicle and
then open the driver's or front-passenger
door.
i If the exterior mirrors have been folded in
manually, they do not fold out.
Exterior mirror pushed out of position If an exterior mirror has been pushed out of
position, proceed as follows.
X Vehicles without electrically folding
exterior mirrors: move the exterior mirror
into the correct position manually.
X Vehicles with electrically folding exte-
rior mirrors: press and hold the mirror-
folding button (Y page 99) until you hear a
click and then the mirror engage in posi-
tion.
The mirror housing is engaged again and
you can adjust the exterior mirrors as usual
(Y page 99). Automatic anti-dazzle mirrors
The "Automatic anti-dazzle mirrors" function
is only available if the vehicle is equipped with
the "Mirror package".
The rear-view mirror and the exterior mirror
on the driver's side automatically go into anti- dazzle mode if:
R the ignition is switched on and
R incident light from headlamps strikes the
sensor in the rear-view mirror
The mirrors do not go into anti-dazzle mode if reverse gear is engaged or if the interior light-
ing is switched on. Parking position of the exterior mirror
on the front-passenger side
General notes The "Parking position for the exterior mirror
on the front-passenger side" function is only
available if the vehicle is equipped with the
"Memory package".
Setting and storing the parking position Using reverse gear
You can set the front-passenger side exterior
mirror so that you can see the rear wheel on
that side as soon as you engage reverse gear.
You can store this position. X
Make sure that the vehicle is stationary and
that the key is in position 2in the ignition
lock.
X Press button ;for the exterior mirror on
the front-passenger side.
X Engage reverse gear.
The exterior mirror on the front-passenger
side moves to the preset parking position.
X Use adjustment button =to adjust the
exterior mirror. You should see the rear
wheel and the kerb in the exterior mirror.
The parking position is stored.
i If you shift the transmission to another
position, the exterior mirror on the front-
passenger side returns to the driving posi-
tion. 100
MirrorsSeats, steering wheel and
mirrors

Using the memory button
You can set the front-passenger side exterior
mirror so that you can see the rear wheel on
that side as soon as you engage reverse gear.
You can store this position. This setting can
be stored using memory button M?.
X Make sure that the vehicle is stationary and
that the key is in position 2in the ignition
lock.
X Press button ;for the exterior mirror on
the front-passenger side.
X Use adjustment button =to adjust the
exterior mirror. You should see the rear
wheel and the kerb in the exterior mirror.
X Press memory button M? and one of the
arrows on adjustment button =within
three seconds.
The parking position is stored if the exterior
mirror does not move.
X If the mirror moves out of position, repeat
the steps.
Calling up a stored parking position set- ting X
Turn the key to position 2in the ignition
lock.
X Adjust the exterior mirror on the front-
passenger side with the corresponding but-
ton (Y page 99).
X Engage reverse gear.
The exterior mirror on the front-passenger
side moves to the stored parking position.
The exterior mirror on the front-passenger
side moves back to its original position:
R as soon as you exceed a speed of
15 km/h
R about ten seconds after you have disen-
gaged reverse gear
R if you press button :for the exterior mir-
ror on the driver's side Memory functions
Storing settings
G
WARNING
If you use the memory function on the driver's side while driving, the adjustments could
cause you to lose control of the vehicle. There
is a risk of an accident.
Only use the memory function on the driver's
side while the vehicle is stationary. G
WARNING
If the memory function adjusts the seat, you
and other vehicle occupants – particularly
children – could become trapped. There is a
risk of injury.
While the memory function is making adjust-
ments, make sure that no one has any part of their body within the sweep of the seat. If
someone becomes trapped, immediately
release the memory function position button.
The adjustment is stopped. G
WARNING
If children activate the memory function, they
could become trapped, especially if they are
unattended. 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.
With the memory function, you can store up
to three different settings, e.g. for three dif-
ferent people.
The following settings are stored as a single
memory preset:
R position of the seat, backrest and head
restraint
R driver's side: position of the exterior mir-
rors on the driver's and front-passenger
sides Memory functions
101Seats, steering wheel and mirrors Z

X
Adjust the seat (Y page 94).
X Adjust the exterior mirror on the driver's
side (Y page 99).
X Briefly press the Mmemory button and
then press storage position button 1,2or 3
within three seconds.
The settings are stored in the selected pre- set position. A tone sounds when the set-
tings have been completed. Calling up a stored setting
X Press and hold the relevant storage posi-
tion button 1,2or 3until the seat and
exterior mirrors are in the stored position.
i The setting procedure is interrupted as
soon as you release the storage position
button. 102
Memory functionsSeats, steering
wheel and mirrors