Opel 2016 ASTRA Owner's Manual page 206

204 Driving and operating
Fault
In the event of a fault in the system or
if the system does not work due to
temporary conditions, e.g. ice
covered sensors, control indicator
r illuminates or a message is
displayed in the Driver Information
Centre.
Vehicle messages 3 128.
Control indicator r 3 119.
Front-rear parking assist
9 Warning
The driver bears full responsibility
for the parking manoeuvre.
Always check the surrounding
area when driving backwards or
forwards while using parking
assist system.
The front-rear parking assist
measures the distance between the
vehicle and obstacles in front and
behind the vehicle. The system gives
acoustic signals and display
messages.
The system has four ultrasonic
parking sensors each in the rear and
front bumper.
It uses two different acoustic warning
signals for the front and rear
monitoring areas, each with a
different tone frequency. The signal
for front obstacles sounds via the
front speakers, for rear obstacles it
sounds from the rear speakers.
Parking assist button and operation
logic
Front-rear parking assist is equipped
with r. If the vehicle is additionally
equipped with advanced parking
assist (see the following separate
description) the system is equipped
with D. Both systems will be
operated by D.
Short press of r or D deactivates
or activates the front parking assist.
Long press of D (approx.
one second) activates or deactivates
the advanced parking assist.
Button logic to operate the systems is
as follows:
● Front-rear parking assist is
active: short press deactivates
front-rear parking assist.
● Front-rear parking assist is
active: long press activates
advanced parking assist if a
forward gear is engaged.
● Advanced parking assist is
active: short press activates
front-rear parking assist.
● Advanced parking assist is
active: long press deactivates
advanced parking assist.
● Advanced parking assist and
front-rear parking assist are
active: short press deactivates
both systems.