See also:

Low battery voltage
If the battery voltage is too low, the parking brake cannot be applied or released. Connect an auxiliary battery if the battery voltage is too low, see page 114. ...

Settings made from the front center control panel
1 MEDIA 2 TUNE 3 OK/MENU 4 EXIT ...

Checking tire pressure
Cold tires Inflation pressure should be checked when the tires are cold. The tires are considered to be cold when they have the same temperature as the surrounding (ambient) air. This tempera ...