Opel 2015 Astra Owner's Manual page 190

188 Driving and operating
The green illuminated vehicle ahead
control indicator A is displayed in the
speedometer when the system
detects a vehicle in the driving path.
If this symbol does not display, or
displays briefly, adaptive cruise
control will not respond to vehicles
ahead.
Deactivation
Adaptive cruise control is deactivated
by the driver when:
■ y is pressed.
■ The brake pedal is depressed.
■ The clutch pedal is depressed for
more than four seconds.
■ The gear selector lever of
automatic transmission is moved to
N.
The system is also automatically
deactivated when:
■ Vehicle speed slows down below
45 km/h or accelerates above
190 km/h.
■ The Traction Control system (TC) is
operating for more than
20 seconds.
■ The Electronic Stability Control
(ESC) is operating.
■ There is no traffic and nothing
detected on the road sides for
several minutes. In this case, there
are no radar echoes and the sensor
may report that it is blocked.
■ The collision imminent braking
system is applying the brakes.
■ The radar sensor is blocked by an
ice or water film.
■ A fault is detected in the radar,
engine or brake system.
When adaptive cruise control is
deactivated automatically, the control
indicator m illuminates white and a
warning symbol is displayed as a pop-
up in the DIC.
The stored speed is maintained.
9 Warning
When adaptive cruise control is
deactivated, the driver must take
over full brake and engine control.
Switching off
Press C to switch off adaptive cruise
control. The control indicator m
extinguishes. The stored speed is
deleted.
Switching off the ignition also
switches off adaptive cruise control
and deletes the stored speed.