OPEL ASTRA J 2018 Service Manual

Seats, restraints39Seats, restraintsHead restraints............................ 39
Active head restraints ................40
Front seats ................................... 41
Seat position .............................. 41
Manual seat adjustment ............42
Seat folding ............................... 44
Power seat adjustment ..............45
Armrest ...................................... 47
Heating ...................................... 47
Rear seats ................................... 48
Armrest ...................................... 48
Seat belts ..................................... 48
Three-point seat belt .................49
Airbag system .............................. 51
Front airbag system ...................52
Side airbag system ....................52
Curtain airbag system ...............53
Airbag deactivation ....................54
Child restraints ............................. 55
Child restraint systems ..............55
Child restraint installation locations ................................... 57Head restraints
Position9 Warning
Only drive with the head restraint
set to the proper position.
The upper edge of the head restraint
should be at upper head level. If this
is not possible for extremely tall
people, set to highest position, and
set to lowest position for small people.
Adjustment
Head restraints on front seats
Height adjustment
Press release button, adjust height,
engage.

40Seats, restraintsHorizontal adjustment
To adjust horizontally, pull the head
restraint forwards. It engages in
several positions.
To return to its rearmost position, pull fully forwards and release.
Head restraints on rear seats
Height adjustment
Pull the head restraint upwards or
press the catch to release and push the head restraint downwards.
Removal
Press both catches, pull the head restraint upwards and remove.
Active head restraints
In the event of a rear-end impact, the front parts of the active head
restraints are moved slightly
forwards. Thus the head is supported
so that the risk of whiplash injury is
reduced.
Note
Approved accessories may only be attached if the seat is not in use.

Seats, restraints41Front seats
Seat position9 Warning
Only drive with the seat correctly
adjusted.
9 Warning
Never adjust seats while driving as
they could move uncontrollably.
9 Danger
Do not sit closer than 25 cm to the
steering wheel, to permit safe
airbag deployment.
9 Warning
Never store any objects under the
seats.
● Sit with buttocks as far back against the backrest as possible.
Adjust the distance between the
seat and the pedals so that legs
are slightly angled when pressing the pedals. Slide the front
passenger seat as far back as
possible.
● Set seat height high enough to have a clear field of vision on allsides and of all display
instruments. There should be at
least one hand of clearance
between head and the roof
frame. Your thighs should rest
lightly on the seat without
pressing into it.
● Sit with shoulders as far back against the backrest as possible.
Set the backrest rake so that it is
possible to easily reach the
steering wheel with arms slightly
bent. Maintain contact between
shoulders and the backrest when turning the steering wheel. Do
not angle the backrest too far
back. We recommend a
maximum rake of approx. 25°.
● Adjust seat and steering wheel in
a way that the wrist rests on top
of the steering wheel while the
arm is fully extended and
shoulders on the backrest.
● Adjust the steering wheel 3 73.
● Adjust the head restraint 3 39.
● Adjust the height of the seat belt 3 49.
● Adjust the thigh support so that there is a space approx. two
fingers wide between the edge of
the seat and the hollow of the
knee.
● Adjust the lumbar support so that
it supports the natural shape of
the spine.

42Seats, restraintsManual seat adjustment
Drive only with engaged seats and
backrests.
Longitudinal adjustment
Pull handle, slide seat, release
handle. Try to move the seat back and forth to ensure that the seat is locked
in place.
Backrest inclination
Pull lever, adjust inclination and
release lever. Allow the backrest to
engage audibly.
Seat height
Lever pumping motion
up:seat higherdown:seat lower

Seats, restraints43Seat inclination
Lever pumping motion
up:front end higherdown:front end lowerLumbar support
Adjust lumbar support using the four-way switch to suit personal
requirements.
Moving support up and down: push switch up or down.
Increasing and decreasing support:
push switch forwards or backwards.
Adjustable thigh support
Pull the lever and slide the thigh
support.

44Seats, restraintsSide bolster, OPC version
Adjust seat width and backrest width
using the switches to suit personal
requirements.
Operate front rocker switch to change seat width.
Operate rear rocker switch to change
backrest width.
Seat foldingCaution
When seat height is in highest
position, push head restraints
down and lift up sun visors before
folding backrest forwards.
Seat folding on manual operated
seats
Lift release lever and fold backrest
forwards, then slide seat forwards to
the stop.
To restore, slide the seat backwards
to the stop. Lift backrest to upright
position without operating any lever.
Ensure backrest engages.9 Warning
When folding up, ensure that the
seat is securely locked in position
before driving. Failure to do so
may result in personal injury in the event of hard braking or collision.
The memory function allows the seat
to engage in its original position.
Do not operate backrest inclination
lever while backrest is tilted forward.
Vehicles with panorama roof: to tilt
backrest forward, push head
restraints down and lift up sun visors.

Seats, restraints45
The illustration shows the release
lever on OPC seat.
9 Warning
To avoid injury, move the backrest
to an upright position before
folding.
Seat folding on power seats
Lift release lever and fold backrest
forwards. The seat slides
automatically forwards to the stop.
To restore, lift backrest to upright
position and engage. The seat slides
automatically backwards to the
original position.
In case the head restraint of the
folded backrest is blocked by the
upper windscreen frame, allow the
seat to move backwards slightly
before lifting up the backrest 3 45.
Safety function
If the power seat encounters
resistance while sliding forward or
rearward, it is immediately stopped
and moved back.
Overload
If the folding function is electrically overloaded, the power supply is
automatically cut-off for a short time.
Power seat adjustment9 Warning
Care must be taken when
operating the power seats. There
is a risk of injury, particularly for
children. Objects could become
trapped.
Keep a close watch on the seats
when adjusting them. Vehicle
passengers should be informed
accordingly.

46Seats, restraintsSeat lengthwise position
Move switch forwards/backwards.Seat height
Move switch upwards/downwards.
Seat inclination
Move front of switch upwards/
downwards.
Seat backrests
Turn switch forwards/backwards.
Lumbar support

Seats, restraints47Adjust lumbar support using the
four-way switch to suit personal requirements.
Moving support up and down: push switch up or down.
Increasing and decreasing support:
push switch forwards or backwards.
Adjustable thigh support
Pull the lever and slide the thigh
support.
Overload
If the seat setting is electrically
overloaded, the power supply is
automatically cut-off for a short time.
Armrest
The armrest can be slid forwards by
10 cm. Under the armrest there is a
storage compartment.
Armrest storage 3 62.
Heating
Adjust heating to the desired setting
by pressing ß for the respective seat
one or more times. The control
indicator in the button indicates the
setting.
Prolonged use of the highest setting
for people with sensitive skin is not
recommended.
Seat heating is operational when
engine is running and during an
Autostop.
Stop-start system 3 142.

48Seats, restraintsRear seats
Armrest
Fold armrest down. The armrest
contains cupholders and a storage
box.
Seat belts
The seat belts are locked during hard acceleration or deceleration of the
vehicle, holding the occupants in the
seat position. Therefore the risk of
injury is considerably reduced.
9 Warning
Fasten seat belt before each trip.
In the event of an accident, people
not wearing seat belts endanger their fellow occupants and
themselves.
Seat belts are designed to be used by only one person at a time. Child
restraint system 3 55.
Periodically check all parts of the belt
system for damage, soiling and
proper functionality.
Have damaged components
replaced. After an accident, have the
belts and triggered belt pretensioners replaced by a workshop.9 Warning
The openings in the backrests of
the OPC seats are not designed to mount or carry through any kind ofadditional seat belts.
Note
Make sure that the belts are not
damaged by shoes or sharp-edged
objects or trapped. Prevent dirt from
getting into the belt retractors.