2021-2022 Nissan Sentra Intelligent Key Not Detected TSB

Symptoms

Owners of 2021-2022 Nissan Sentra vehicles may experience a specific issue where the Intelligent Key fob is not detected. This problem occurs when the key is located "above or around the center console area."

Diagnosis and Trigger Conditions

The condition is confirmed if the Intelligent Key fob fails to be detected in or around the center console. This indicates a potential communication issue with the vehicle's Hands Free Module (HFM). This TSB, NTB22-037, specifically targets this detection problem for the Nissan Sentra Intelligent Key system.

Repair Procedure Summary

Nissan Technical Service Bulletin NTB22-037 outlines a detailed procedure for technicians to reconfigure the Hands Free Module (HFM) using the CONSULT-III plus diagnostic system. The process involves several steps to ensure proper communication and configuration.

1. Preparation: Technicians must first ensure their ASIST and CONSULT software are up-to-date and all necessary software updates have been installed.
2. Connection: The Vehicle Interface (VI) is connected to the vehicle, and the ignition is turned ON with the engine OFF.
3. Software Launch: CONSULT-III plus (C-III plus) is started on the CONSULT PC. The serial number of the VI will display once recognized (Figure 1).
4. Module Selection: From the main menu, technicians navigate to "Re/programming, Configuration." They then review and confirm all displayed precautions (Figure 2).
5. Vehicle Identification: The system automatically selects the vehicle's VIN (Figure 3, Figure 4), which is then confirmed (Figure 5). The system performs a call to retrieve vehicle data (Figure 6, Figure 7).
6. Hands Free Module Access: The "HANDS FREE MODULE" is selected from the system list (Figure 8).
7. Configuration Selection: Technicians choose "After ECU Replacement" under "VEHICLE CONFIGURATION" (Figure 9).
8. Manual Selection: "Manual selection" is chosen for the writing method (Figure 10).
9. Type ID Selection: The specific Type ID for the vehicle is selected based on whether it has Remote Engine Start (RES). "285J7-6LE1B" is used for vehicles with RES, and "285J7-6LE4B" for those without (Figure 11).
10. Write Configuration: After verifying the ignition is ON and the engine is OFF, the configuration is written to the HFM (Figure 12).
11. User Authentication: The technician selects "USA/CANADA Dealers" (Figure 13) and enters NNAnet credentials to complete the process (Figure 14).
12. Completion: The configuration write process is allowed to complete (Figure 15), and the Type ID is confirmed (Figure 16), followed by selecting "End."

Required Tools or Parts

The primary tool required for this repair is the Nissan CONSULT-III plus (C-III plus) diagnostic system, along with its Vehicle Interface (VI). Technicians will also need access to the ASIST system and up-to-date software. The bulletin specifies Type IDs "285J7-6LE1B" and "285J7-6LE4B" for the HFM configuration, and references the Smart Keyless Control Assembly (part number family 285E1-*****) as the Primary Failed Part (PFP) for claims coding RXB3AA.

Important Warnings for Owners

Nissan emphasizes that these bulletins are intended for use by qualified technicians, not 'do-it-yourselfers.' Technicians are properly trained and equipped to perform such repairs safely and correctly. Owners should not assume a described condition applies to their vehicle without a dealer's diagnosis. It is crucial to see your Nissan dealer to determine if this applies to your vehicle.

What Owners Should Do

If you own a 2021-2022 Nissan Sentra and experience your Intelligent Key not being detected in the center console area, it is recommended to contact your authorized Nissan dealer. They will be able to diagnose the issue and perform the necessary Hands Free Module (HFM) reconfiguration as outlined in TSB NTB22-037. This repair involves specialized diagnostic equipment and software to properly address the Nissan Sentra Intelligent Key detection problem.

NHTSA ID: 10218968