Faults in the system

If the information symbol illuminates and Park assist syst Service required is shown on the information display, this indicates that the system is not functioning properly and has been disengaged. Consult a trained and qualified Volvo service technician.
CAUTION
In certain circumstances, the park assist system may give unexpected warning signals that can be caused by external sound sources that use the same ultrasound frequencies as the system. This may include such things as the horns of other vehicles, wet tires on asphalt, pneumatic brakes, motorcycle exhaust pipes, etc. This does not indicate a fault in the system.
See also:
Coolant
Location of the coolant reservoir
Normally, the coolant does not need to be changed. If the system must be drained,
consult a trained and qualified Volvo service technician.
See page 341 for inf ...
Modifications
If you are considering modifying your vehicle in
any way to accommodate a disability, for
example by altering or adapting the driver's or
front passenger's seat(s) and/or airbag systems,
pleas ...
Anti-lock Brake System (ABS)
The ABS system performs a brief self-diagnostic
test when the engine has been started and
driver releases the brake pedal. Another automatic
test may be performed when the vehicle
first reache ...
