2021-2022 Nissan Sentra Intelligent Key Not Detected

Owners of certain 2021-2022 Nissan Sentra vehicles may experience a "Nissan Sentra key fault" where the Intelligent Key fob is not detected when placed in or around the center console area. This issue, identified by Nissan Technical Service Bulletin (TSB) NTB22-037A, can prevent proper vehicle operation and key recognition.

Symptoms

The primary symptom of this issue is the message or indication that the "Intelligent Key fob is not detected when above or around the center console area." This means the vehicle's system fails to recognize the key fob's presence in the designated area, which is crucial for starting the vehicle or performing other key-dependent functions.

Diagnosis / Trigger Conditions

The condition is confirmed when the Intelligent Key fob is physically present in or near the center console, but the vehicle's system does not detect it. This TSB applies specifically to 2021 Nissan Sentra models (all grades) and 2022 Nissan Sentra models (SV, SR grades) built before June 24, 2022 (B18 platform).

Repair Procedure Summary

The repair for this Nissan Sentra key fault involves reconfiguring the Hands Free Module (HFM) using Nissan's specialized diagnostic equipment. The process, outlined in TSB NTB22-037A, includes the following general steps:

1. Preparation: Ensure the CONSULT PC has the latest ASIST synchronization and all CONSULT software updates are installed. Connect the CONSULT PC to Wi-Fi and link the Vehicle Interface (VI) to the vehicle.
2. Initiate Diagnostic Tool: Turn the ignition ON (engine OFF) and start the CONSULT-III plus (C-III plus) software. Log in with NNAnet credentials.
3. System Selection: Navigate through the CONSULT-III plus menu, selecting "Re/programming, Configuration" once the VI is recognized.
4. Vehicle Identification: Confirm the vehicle's VIN automatically or manually and proceed.
5. Module Selection: Select "HANDS FREE MODULE" from the system list.
6. Configuration Type: Choose "After ECU Replacement" under VEHICLE CONFIGURATION.
7. Type ID Selection: Select "Manual selection" and then choose the appropriate Type ID for the Hands Free Module:
   • For vehicles with Remote Engine Start (RES), select "285J7-6LE1B".
   • For vehicles without RES, select "285J7-6LE4B".
8. Write Configuration: Verify the ignition is ON (engine OFF) and confirm the selected Type ID. Allow the CONSULT-III plus to write the new configuration to the HFM.
9. Completion: Confirm the Type ID is correctly written and finalize the operation.

Required Tools or Parts

Technicians will need specific tools and software to perform this repair:

• A CONSULT PC with up-to-date ASIST and CONSULT-III plus (C-III plus) software.
• A Vehicle Interface (VI) to connect the CONSULT PC to the vehicle.
• The specific Type IDs for the Hands Free Module: "285J7-6LE1B" (with RES) or "285J7-6LE4B" (without RES).

Owner Action

If your 2021-2022 Nissan Sentra is experiencing the "Nissan Sentra key fault" described, where the Intelligent Key is not detected in the center console, you should contact your authorized Nissan dealer. They have the necessary diagnostic tools and training to perform the Hands Free Module reconfiguration as per TSB NTB22-037A. This procedure is typically covered under warranty if your vehicle meets the specified conditions.

Important Warnings

Nissan explicitly states: "Bulletins are intended for use by qualified technicians, not 'do-it-yourselfers'. Qualified technicians are properly trained individuals who have the equipment, tools, safety instruction, and know-how to do a job properly and safely." Owners should not attempt this repair themselves.

Claims Information

For technicians, claims for this repair should be submitted using the following coding:

• Description: Reconfigure Hands Free Module
• Primary Failed Part (PFP): Smart Keyless Control Assembly (285E1-*****)
• OP Code: RXB3AA
• SYM: ZE
• DIA: 32
• FRT: 0.3

Amendment History

This bulletin, NTB22-037A, is an amendment to a previous version. The original bulletin, NTB22-037, was published on August 16, 2022. The amended version, NTB22-037A, published on January 17, 2023, added specific "APPLIED DATES" and reorganized the login steps within the procedure.

NHTSA ID: 10231428