See also:

Troubleshooting guide
Verify the location of all Intelligent Keys that are programmed for the vehicle. If another Intelligent Key is in range or inside the vehicle, the vehicle system may respond differently than expected. ...

Bluetooth Hands-Free Phone System withoutNavigation System (if so equipped)
WARNING ● Use a phone after stopping your vehicle in a safe location. If you have to use a phone while driving, exercise extreme caution at all times so full attention may be given to vehicle ...

INFINITI Vehicle Immobilizer System
The INFINITI Vehicle Immobilizer System will not allow the engine to start without the use of the registered Intelligent Key. Never leave these keys in the vehicle. This device complies with P ...