See also:

Selecting, fast-forwarding, reversing and scanning tracks
 - Selecting a track Press “” to move up or “” to move down using the “SEEK•TRACK” button until the desired track number is displayed.  - Fast-forwarding and reversing trac ...

Overview button and guidance screen
*: Press and hold the “PWR·VOL” knob for 3 seconds or more to turn off the screen and restart the navigation system. Do this when the vehicle-mounted device response is extremely slow. ...

Have the malfunction repaired immediately.
After taking the specified steps to correct the suspected problem, check that the warning message and light go off. ...