2021-2024 Nissan BCM Replacement Service Bulletin

Nissan Technical Service Bulletin (TSB) NTB20-074B, issued on May 20, 2024, provides critical service information for the proper replacement of the Body Control Module (BCM) in several Nissan models. This bulletin is crucial for technicians to ensure correct installation and configuration, preventing potential issues with vehicle electronics and intelligent key systems after a Nissan BCM replacement.

The Body Control Module (BCM) is a vital component in modern vehicles, overseeing a wide array of functions from power windows and door locks to the intelligent key system and various security features. Its proper functioning is essential for the overall operation and security of your Nissan. This TSB emphasizes specific steps that must be followed during a Nissan BCM replacement to avoid damage and ensure all systems operate as intended.

Important Warnings for Nissan BCM Replacement

This bulletin highlights several key warnings and procedural requirements that technicians must adhere to when performing a Nissan BCM replacement. These steps are critical to prevent damage to the new BCM and ensure correct vehicle functionality:

• When replacing the BCM, technicians are instructed to "ALWAYS replace it with a new one." This ensures that only new, properly functioning parts are used for this critical component.
• "Module configuration MUST BE performed before pairing the BCM and Intelligent Key unit." This is a crucial sequence of operations. Failing to configure the BCM before pairing it with the Intelligent Key can lead to permanent issues, as the bulletin states: "Once the BCM and Intelligent Key unit have been paired, portions of the configuration are locked and can no longer be changed." This means that if the initial configuration is incorrect, it cannot be rectified later without potentially replacing the BCM again.
• To prevent damage to the BCM, the bulletin issues a direct notice: "To prevent damage to the BCM, perform module configuration BEFORE pairing the BCM and Intelligent Key unit." This reiterates the importance of the correct procedural order to safeguard the new module.

Repair Procedure Summary

While the TSB itself does not detail the full step-by-step repair procedure, it directs technicians to the Electronic Service Manual (ESM) for comprehensive instructions. Following the ESM is paramount for a successful Nissan BCM replacement. The bulletin specifies the navigation paths within the ESM for different vehicle models:

• For ARIYA (FE0), Pathfinder (R53), and Rogue (T33) models: Technicians should navigate to "ELECTRICAL & POWER CONTROL > BODY CONTROL SYSTEM > BASIC INSPECTION > ADDITIONAL SERVICE WHEN REPLACING BCM".
• For Sentra (B18) models: Technicians should navigate to "ELECTRICAL & POWER CONTROL > BODY CONTROL SYSTEM > BASIC INSPECTION > INSPECTION & ADJUSTMENT > ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (BCM)".

These specific paths ensure that technicians access the correct, detailed procedures for each vehicle type, covering all necessary steps beyond the general warnings provided in the TSB.

Bulletin History

This bulletin, NTB20-074B, is a revision of previous versions. The amendment history indicates the following updates:

• October 14, 2020: Original bulletin published as NTB20-074.
• January 26, 2022: APPLIED VEHICLES list revised, published as NTB20-074A.
• May 20, 2024: APPLIED VEHICLES list revised again, published as NTB20-074B.

These revisions highlight Nissan's ongoing commitment to providing accurate and up-to-date service information to its technicians, ensuring that the latest vehicle applications are covered.

What Owners Should Know

If your Nissan requires a BCM replacement, it's important to ensure that the repair is performed by a qualified technician who is aware of and follows this Technical Service Bulletin. The specific sequence of module configuration and intelligent key pairing is critical for the long-term reliability and functionality of your vehicle's electrical systems. Always consult with an authorized Nissan service center for any BCM-related repairs.

NHTSA ID: 11004967