See also:

Battery replacement
CAUTION Be careful not to allow children to swallow the battery or removed parts. ...

Precautions when starting and driving
- Do not leave children or adults who would normally require the support of others alone in your vehicle. Pets should not be left alone either. They could accidentally injure themselves ...

NISSAN vehicle immobilizer system
The NISSAN Vehicle Immobilizer System will not allow the engine to start without the use of a registered key. Never leave these keys in the vehicle. Statement related to Section 15 of FCC Rules f ...