Opel MOKKA Owner's Manual page 211

If the vehicle stops for more than
three seconds, if the automatic
transmission is in P position, or if no
further obstacles are detected, no
audible signals are given.
Note
An audible signal is not given if the
sound has been muted or if the
display of the rear view camera
indicated on the Info Display has
been switched off.
Additionally, the distance to rear
obstacles is displayed by changing
distance lines in the Info Display
3 80. When the obstacle is very close,
+ for danger is displayed.
Muting the sound / closing the display
indication
If the audible signal is muted or the
display of the rear view camera is
closed and an obstacle gets closer,
only the 1 flashes.
When engaging the forward gear and
driving more than 10 km/h the sound
and the display are automatically
resumed.
Front-rear parking assist
The front-rear parking assist
measures the distance between the
vehicle and obstacles in front and
behind the vehicle. It informs and
warns the driver by giving audible
signals and a display indication.
The system operates with ultrasonic
parking sensors in the rear and front
bumper.
Driving and operating
If the obstacle (1) is within the driving
path and might lead to a collision, an
audible signal is given.
The interval between the sounds
becomes shorter as the vehicle gets
closer to the obstacle in the driving
path. When the distance is less than
approx. 30 cm, the sound is
continuous.
Obstacles (2) that are close to the
vehicle, but not within the calculated
driving path are indicated in the Info
Display, but no audible signal is
given.
209