2021-2024 Nissan Door Lock Operation TSB

Nissan Technical Service Bulletin (TSB) NTB22-104A addresses common issues with door lock operation in several 2021-2024 Nissan models. This bulletin, updated on April 25, 2024, provides technicians with a comprehensive guide to diagnose and resolve problems such as doors failing to open, unlock, or close properly, specifically impacting the Nissan Sentra door lock operation among other models.

Symptoms

Owners of affected Nissan vehicles may experience various symptoms related to door lock malfunction. These include:

• "Door will not open"
• "Door will not close"
• "Door sticks in half-lock position"
• "power lock to be unresponsive"
• An "Inside Lock Knob has a noticeably higher resistance" compared to other doors.

Important Warnings for Owners

Nissan has issued specific advisories for both technicians and vehicle owners regarding this issue:

• "Do not replace a Door Lock unless instructed to by the SERVICE PROCEDURE."
• "This can be caused by contact with the Inside Lock Knob as the Inside Handle is actuated to open the door from inside the vehicle and is not a defect. Do not replace the Door Lock as it can happen just as easily with the replacement Door Lock."
• "Bulletins are intended for use by qualified technicians, not 'do-it-yourselfers'."
• "If you believe that a described condition may apply to a particular vehicle, DO NOT assume that it does. See your Nissan dealer to determine if this applies to your vehicle."

Diagnosis and Trigger Conditions

To effectively diagnose the Nissan Sentra door lock operation issue, technicians are advised to ask customers specific questions to understand the nature of the problem:

• When did you first notice the issue?
• Is it consistent or intermittent?
• Under what conditions does it occur?
• Does it seem more likely to happen to a specific passenger/person in your family?
• Has there been any change to the issue since it first began?

Technicians will also check if the problem affects both the inside and outside door handles, or just one. A critical diagnostic step involves inspecting the position of the