See also:

Audible signal
The Park Assist system uses an intermittent tone that pulses faster as you come close to an object, and becomes constant when you are within approximately 1 ft (30 cm) of an object in front of or ...

Input volume
Adjust the input volume in the RSE menu, under A/V AUX input volume. ...

Folding down the rear seat backrests
The rear seat backrests can be folded down for additional loading space, see page 88. ...