Opel CASCADA Owner's Manual page 150

148 Driving and operating
The green illuminated vehicle ahead
symbol A appears in the
speedometer when the system has
detected a vehicle in the driving path.
Precondition is, that forward collision
alert is not deactivated by the button
V.
Activation
Forward collision alert operates
automatically above 40 km/h, if it is
not deactivated by button V, see
below.
Selecting the alert sensitivity
The alert sensitivity can be set to
near, medium or far.
Press button V, the current setting is
shown on the Driver Information
Centre. Press button V again to
change the alert sensitivity.
Alerting the driver