Opel MOVANO Owner's Manual page 210

when reverse gear is selected
(versions with manual transmission) or
R position (versions with automatic
transmission);
or
when the manual transmission gear
lever is in neutral or the automatic
transmission lever is in N (neutral)
position, the vehicle is moving and an
obstacle is detected.
Deactivation
The acoustic and visual signals are
deactivated automatically in the
following cases:
engaging a gear other than reverse
gear at a speed above 18 km/h;
or
exceeding 11 km/h with reverse gear
engaged;
or
when with the vehicle standing the
manual gear stick is in neutral or the
automatic transmission lever is in P
(Park) or N (Neutral) position.
Acoustic warning
When the sensors detect an obstacle
within the trajectory of the vehicle, an
acoustic warning is activated with
a frequency that increases as the
distance from the obstacle decreases
and then becomes a continuous tone
when this distance becomes less than
about 30 cm.
208
The acoustic warning is interrupted in
the following situations:
when external sensors detect
an obstacle at a constant distance
(example: manoeuvring along a wall);
if vehicle is at a standstill with the
transmission in a position other than
reverse;
when the obstacle is not within the
trajectory of the vehicle.
If the sensors detect several obstacles
at the same time, in the front, side and
rear area, the acoustic warning of the
obstacle in the nearest trajectory is
reproduced.
Warning on display
The warnings regarding the system are
shown on the instrument panel display
only if the "Acoustic warning and
display" item in the "Settings" menu of
the system is selected (see "Settings"
in the "Vehicle mode" paragraph in the
"Multimedia" section).
The system indicates the presence
of an obstacle by displaying a single
arc in one of the possible areas, in
accordance with the distance of the
object and the position in relation to the
vehicle.
As the vehicle approaches an obstacle
within the front, side or rear coverage
area, the display will show a single arc
in the corresponding area. The colour
depends on the distance from and
position of the obstacle.
If several obstacles are detected
simultaneously in the front, side and
rear area, the display will show all of
them, regardless of the area in which
they were detected.
Operation with trailer
The operation of the rear sensors is
automatically deactivated when the
trailer's electric cable plug is inserted
in the tow hook socket of the vehicle,
while the front sensors stay active
and can provide acoustic and visual
warnings. In this case, the LED on
the button (A) on the dashboard
fig. 241 stays off. The rear sensors are
automatically reactivated when the
trailer's cable plug is removed.
Fault indication
Parking sensor faults, if any, will be
indicated by a message on the display
(see description in the "Warning
lights and messages" chapter in the
"Knowing the instrument panel"
section).
Messages on the display
In case of system failure, a dedicated
message is shown on the display for
several seconds.
If the display shows messages
requiring the front, side or rear sensor
cleaning, make sure that the outer