Page 9 of 245
In brief7Seat adjustmentSeat positioning
Pull handle, slide seat, release
handle.
Seat adjustment 3 50, Seat position
3 49.
9 Danger
Do not sit nearer than 25 cm from
the steering wheel, to permit safe
airbag deployment.
Seat backrests
Turn handwheel. Do not lean on seat when adjusting.
Seat adjustment 3 50, Seat position
3 49, Folding front passenger seat
backrest 3 52.
Seat height
Lever pumping motion
up=higherdown=lower
Seat adjustment 3 50, Seat position
3 49.
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8In brief
Seat inclination
Pull lever, adjust inclination by
shifting body weight. Release lever
and audibly engage seat in position.
Seat adjustment 3 50, Seat position
3 49.
Head restraint adjustment
Press release button, adjust height,
engage.
Head restraints 3 47.
Seat belt
Pull out the seat belt and engage in
belt buckle. The seat belt must not be twisted and must fit close against the
body. The backrest must not be tilted
back too far (maximum approx. 25 °).
To release belt, press red button on
belt buckle.
Seat belts 3 54, Airbag system
3 57, Seat position 3 49.
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In brief9Mirror adjustment
Interior mirror
Swivel the lever on the underside to
reduce dazzle.
Interior mirror 3 34, Automatic anti-
dazzle interior mirror 3 34.
Exterior mirrors
Electric adjustment
Select the relevant exterior mirror andadjust.
Electric adjustment 3 33, Convex
exterior mirrors 3 32, Folding
exterior mirrors 3 33, Heated
exterior mirrors 3 34.
Steering wheel adjustment
Unlock lever, adjust steering wheel,
then engage lever and ensure it is fully locked. Do not adjust steering
wheel unless vehicle is stationary and steering wheel lock has been
released.
Airbag system 3 57, Ignition
positions 3 133.
Page 13 of 245

In brief11
1Light switch ........................ 117
Instrument illumination .......121
Rear fog light ....................... 120
Front fog lights ...................120
Headlight range
adjustment ......................... 118
2 Side air vents ...................... 130
3 Turn and lane-change
signals, headlight flash,
low beam and high beam ...120
Exit lighting .......................... 123
Parking lights ...................... 120
Cruise control .....................102
4 Steering wheel controls ........86
5 Horn ...................................... 87
Driver airbag ......................... 58
6 Instruments .......................... 93
7 Windscreen wiper,
windscreen washer
system, headlight washer
system .................................. 878 Left heated seat ....................53
Deflation detection system ..191
Tyre pressure monitoring
system ................................. 191
Load compartment
unlocking ............................... 28
Ultrasonic parking sensors ... 98
Hazard warning flashers .....119
Central locking system ..........25
Sport mode ........................... 98
Right heated seat ..................53
9 Info-Display ......................... 102
Trip computer ...................... 112
Electronic climate control
system ................................. 127
10 Centre air vents ................... 130
11 Front passenger airbag .........58
12 Glovebox .............................. 67
13 Infotainment system ..............10
14 Climate control system ........ 124
15 Ashtray .................................. 9116Start/Stop button ..................22
17 Accelerator pedal ................132
18 Ignition switch with
steering wheel lock .............133
Sensor panel for
emergency operation of
Open&Start system ...............22
19 Brake pedal ......................... 146
20 Clutch pedal ........................ 132
21 Steering wheel adjustment ...86
22 Bonnet release lever ...........161
Page 45 of 245

Keys, doors and windows43
■ Activating the roof on unevenground can lead to malfunctionsand damage.
■ To prevent and remedy squeaking noises of the roof seals a special
maintenance kit is available at your service partner. It is recommendedto apply this product once a year for prevention.
Fault
The automatic drive of the roof is only operational if the roof is in the proper
open or closed position.
Check if: ■ Load compartment blind is engaged in closed position
■ Boot lid is completely closed
■ Outside temperature is above -20 °C
■ There is sufficient battery voltage
■ There is a system overload
If the automatic drive is not
operational, two persons are required
to manually close the roof. See theaccompanying instructions for Astra
TwinTop. Professional assistance is recommended.
Rollover protection system The Astra TwinTop is equipped with
rollover protection with reinforced
windscreen frame and anti-roll bars
behind the rear seat head restraints.
Depending on the variant, the anti-roll
bars are either fixed or deploy
automatically in the event of an
impact of a certain severity.
Fixed anti-roll barsFixed anti-roll bars are secured to the vehicle bodywork.
Deployable anti-roll bars
Deployable anti-roll bars are located
between the rear head restraints and the boot lid. In the event of a rollover, head-on collision or side impact, the
anti-roll bars deploy upwards within
milliseconds. They also deploy
together with the front and side airbag
systems.
The system deploys with the roof
open or closed.
Page 46 of 245

44Keys, doors and windows
The convertible roof must not be
operated if the anti-roll bars have
been deployed. A continuous warning will sound if the switch is actuated.
The airbag control indicator v
illuminates if the anti-roll bars have
been deployed.
Note
Do not place any objects on the
covers of the anti-roll bars behind
the head restraints.
Extended anti-roll bars can be
retracted (e.g. in order to close the
roof after a collision).
Press the lever between the rods of
an anti-roll bar to unlock the system.
Push the anti-roll bar all the way down
until it engages. Fit the cover.
Repeat the procedure on the other
anti-roll bar.
Control indicator v will remain
illuminated and the anti-roll bars will not deploy in the event of another
collision. Seek the assistance of a workshop.9 Warning
The roof cannot be closed or
opened if the anti-roll bars are
extended. The anti-roll bars must
first be retracted.
After deployment of the anti-roll
bar, have the system repaired by
a workshop immediately.
Manually retracted anti-roll bars
will not deploy in the event of a
collision.
Load compartment
The roof can only be opened if the
load in the load compartment does
not exceed the height of the load
compartment blind or protrude
sideways. The load height must not
be exceeded. The load compartment
blind must be flat; objects below it must not press it upwards. Otherwise the roof and load may be damaged.
Blockage of boot lid
To avoid damage to the open roof,
boot lid or load, the boot lid can only
be closed if the electric load aid is in
the lower end position 3 77.
Page 49 of 245
Seats, restraints47Seats, restraintsHead restraints............................ 47
Front seats ................................... 49
Rear seats ................................... 53
Seat belts ..................................... 54
Airbag system .............................. 57
Child restraints ............................. 61Head 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
Front and rear outboard head
restraints
Press the button, adjust height and
engage.
Page 52 of 245
50Seats, restraints
■ Adjust the thigh support so thatthere 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.
Seat adjustment9 Danger
Do not sit nearer than 25 cm from
the steering wheel, to permit safe
airbag deployment.
9 Warning
Never adjust seats while driving as
they could move uncontrollably.
Seat positioning
Pull handle, slide seat, release
handle.
Seat backrests
Turn handwheel. Do not lean on
backrest when adjusting.