Front And Rear Parking Assist (Option) - Aston Martin DB9 2009 Owner's Manual

If reversing into a confined area, i.e. a home garage, the rear
parking assist outer sensors will detect the side walls 1 ft.
(30 cm) and, after three seconds, the 'Beep' sequence will
stop. As reversing continues the rear parking assist inner
sensors will detect the rear wall / obstruction and the 'Beep'
sequence will start again.
Press the parking assist button to
disable rear parking assist. The
rear parking assist button will
illuminate when the system is
disabled.
When parking or reversing make full use of rearward
vision and all mirrors to be aware of persons or objects in
the vicinity of the vehicle. Take appropriate measures to
protect them from danger.
In heavy rain or similar adverse conditions, the rear
parking assist sensors may not always be able to
accurately measure distance to close objects. A fully laden
vehicle or irregular obstacles may also cause inaccurate
measurements.
The parking sensors
should be kept clear of
dirt, snow etc. to
ensure clean signals
and accurate distance
monitoring.

Front and Rear Parking Assist (Option)

It remains the driver's responsibility to detect obstacles
and estimate the car's distance from them. Some
overhanging objects, barriers, thin obstructions or
painted surfaces which could possibly cause damage to
the vehicle may not be detected by the system. Always be
vigilant when reversing.
The parking assist system provides an audible warning, when
driving forwards or rearwards, if objects are detected within
range of the vehicle.
If, for example, you are driving within a confined space
such as a home garage, the outer sensors will detect the
side walls and after three seconds will switch the tone
OFF. However, as movement continues, the inner sensors
will eventually detect the rear wall and will start the tone
again.
5.21