See also:

Certification for the Handsfree system
FCC WARNING Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. NOTE This device complies ...

Interior light
When leaving your vehicle, make sure the lights are turned off to avoid battery discharge. ...

Rear seats
WARNING Seatbelts provide maximum restraint when the occupant sits well back and upright in the seat. Do not put cushions or any other materials between occupants and seatbacks or seat cushions ...