See also:

Cooling system
...

Navigation settings
“Home” and “Preset Destinations” can be set and edited. Points or areas on the map can be registered. On this screen, the following operations can be performed. ...

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. ...