Nissan Altima Owners Manual: NISSAN vehicle immobilizer system

The NISSAN Vehicle Immobilizer system will not allow the engine to start without the use of the registered key.

If the engine fails to start using a registered key (for example, when interference is caused by another registered key, an automated toll road device or automatic payment device on the key ring), restart the engine using the following procedure:

1. Leave the ignition switch in the ON position for approximately 5 seconds.

2. Place the ignition switch in the OFF or LOCK position, and wait approximately 10 seconds.

3. Repeat steps 1 and 2.

4. Restart the engine while holding the device (which may have caused the interference) separate from the registered key.

If the no start condition re-occurs, NISSAN recommends placing the registered key on a separate key ring to avoid interference from other devices.

    NISSAN Intelligent Key® battery discharge
    If the battery of the NISSAN Intelligent Key® is discharged, or environmental conditions interfere with the Intelligent Key operation, start the engine according to the following procedure: 1. ...

    Before starting the engine
    ● Make sure the area around the vehicle is clear. ● Check fluid levels such as engine oil, coolant, brake fluid, and windshield-washer fluid as frequently as possible, or at least when ...

    Other materials:

    BCM branch line circuit
    Diagnosis Procedure 1.CHECK CONNECTOR 1. Turn the ignition switch OFF. 2. Disconnect the battery cable from the negative terminal. 3. Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? Y ...

    How to use the remote keyless entry function
    The remote keyless entry function can operate all door locks using the remote keyless function of the Intelligent Key. The remote keyless function can operate at a distance of 33 ft (10 m) away from the vehicle. The operating distance depends upon the conditions around the vehicle. The remot ...

    Front bumper
    Removal and Installation 1. Front bumper supports 2. Front bumper side bracket 3. Reinforcement bracket 4. Front bumper reinforcement 5. Front energy absorbing foam 6. Front bumper fascia 7. Tow hook cover 8. Front grille 9. License plate bracket 10. Fog lamp finisher (if equipped) 11. ...