WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

When the ignition knob switch is ON, the Intelligent Key unit transmits the request signal to the Intelligent Key.
The Intelligent Key receives the request signal and transmits the Intelligent Key ID signal to the Intelligent Key unit.
The Intelligent Key unit receives the Intelligent Key ID signal and verifies it with the registered ID.
Intelligent Key unit transmits the steering lock/unlock signal to steering lock unit if the verification results are OK. For detail of key warning lamp operation, refer to "SYSTEM DESCRIPTION ".
Release of the steering lock.
BCM transmits the starter request signal via CAN communication to IPDM E/R and turns the starter relay in IPDM E/R ON if BCM judges that the engine start condition is satisfied.
IPDM E/R turns the starter control relay ON when receiving the starter request signal.
When shift position is in P or N position, battery power is supplied through the starter relay and operate the starter motor and to start the cranking.

CAUTION: If a malfunction is detected in the Intelligent Key system, the "NO KEY" warning message will be displayed in the combination meter. At that time, the engine cannot be started.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Operation When Intelligent Key Is Carried

Use the Manual With the Right Hardware

When to See a Mechanic