Opel ASTRA Owner's Manual page 189

Activation
The lane keep assist is activated by
pressing a. The illuminated LED in
the button indicates that the system is
switched on.
When the control indicator a in the
instrument cluster illuminates green,
the system is ready to assist.
The system is operable at vehicle
speeds between 60 km/h and
180 km/h and if lane markings are
available.
The system gently turns the steering
wheel and the control indicator a
changes to yellow, if the vehicle
approaches a detected lane marking
without using the turn signal in that
direction.
The system alerts by flashing a
together with three chimes, from the
respective direction, if the lane is
departed significantly.
The system can not operate when no
lane marking is detected.
If the system only detects lane
markings on one side of the road, it
will only assist for this side.
Lane keep assist detects hands-off
driving. In this case a message in the
Driver Information Centre pops up
and a chime sounds as long as lane
keep assist detects hands-off driving.
Driving and operating
Deactivation
The system is deactivated by
pressing a, the LED in the button
extinguishes.
Fault
The system performance may be
affected by:
● Windscreen not clean or affected
by foreign items, e.g. stickers
● Close vehicles ahead
● Banked roads
● Winding or hilly roads
● Road edges
● Roads with poor lane markings
● Sudden lighting changes
● Adverse environmental
conditions like heavy rain or
snow
● Vehicle modifications, e.g. tyres.
Switch off the system, if the system is
faulted by tar marks, shadows, road
cracks, temporary or construction
lane markings, or other road
imperfections.
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