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. ...

Replacing fuses
There are relay/fuse boxes located in the engine compartment, the passenger compartment, and the trunk. If an electrical component fails to function, this may be due to a blown fuse. The easiest ...

Standby mode due to action by the driver
ACC is temporarily deactivated and put in standby mode: when the brakes are applied if the driver's seat belt is taken off If the driver's door is opened if the gear selector is move ...