Switch off
If the ignition sense wire is connected, turn off the car ignition. If you
turn off the ignition during a call, the car kit switches off after you end
the call or disconnect the mobile device from the car kit.
If the ignition sense wire is not connected, press and hold the Navi
wheel until the indicator light of the input device turns off. After you
turn off the car ignition, do not leave the mobile device connected to
the car kit to prevent accidental draining of the car battery.