Nissan Armada 2025-2026 Service and Repair Manual: Intelligent Key System All Functions Cannot Operate (all Keys)

Description

Intelligent Key system all functions cannot operate (door lock and engine start).

SYMPTOM TABLE (BOTH INTELLIGENT KEYS HAVE THE SAME SYMPTOMS)

Door lock operation (remote keyless entry)	Door lock operation (one touch sensor or request switch of front/rear/back door) or trunk/back door open operation (opener switch of trunk/back door panel)	Engine started with push-button ignition switch operation (registered Intelligent Key is within the detection area of inside key antenna)	Engine started with push-button ignition switch operation (registered Intelligent Key placed next to push-button ignition switch)	Unlock operation when approaching the vehicle, lock operation when away from the vehicle (registered Intelligent Key is within the detection area of outside key antenna)
NG	NG	No start	No start	NG

DIAGNOSIS PROCEDURE

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK INTELLIGENT KEY SYSTEM SYMPTOM TABLE

Check Intelligent Key system symptom table.

Refer to Diagnosis Procedure.

>>

GO TO 2.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check lntelligent Key unit power supply and ground circuit.

Refer to Diagnosis Procedure.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace the malfunctioning parts.

CHECK INTELLIGENT KEY-1

For both Intelligent Key that cannot be used for door lock and unlock, check that the Intelligent Key belongs to the vehicle to be checked.

• Check if the Intelligent Key that is checked is the Intelligent Key for a different vehicle that the user owns.

• Check that the Intelligent Key buttons match the vehicle specifications.

Does the Intelligent Key belong to the vehicle to be checked?

YES>>

GO TO 4.

NO>>

Check Intelligent Key button operation using a registered Intelligent Key that belongs to the vehicle.

CHECK INTELLIGENT KEY-2

Check the inside of the both Intelligent Key for rust or corrosion by water. Simultaneously check the internal circuits for damage.

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Replace Intelligent Key.

REGISTER INTELLIGENT KEY

1. Register the Intelligent Key again.

2. Check operation after replacement.

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

GO TO 6.

REPLACE INTELLIGENT KEY

1. Replace the Intelligent Key and perform registration again.

2. Check operation after replacement.

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

GO TO 7.

REPLACE INTELLIGENT KEY UNIT

1. Replace Intelligent Key unit. Refer to Removal and Installation.

2. Check the operation after replacement.

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Check intermittent incident. Refer to Intermittent Incident.