2024 BMW 330i Underbody Ground Cable Delivery Stop SIB 61 26 24

BMW has released Service Information Bulletin (SIB) 61 26 24, Revision 1, addressing a Delivery Stop for specific 2024 BMW 3 Series Sedan (G20) models. This bulletin supersedes the original SIB 61 26 24 from October 2024 and focuses on improperly secured underbody ground cables. The issue affects both 12V and 48V ground connections, which may have been installed with insufficient tightening torque.

Important Owner Information

BMW has issued a critical advisory regarding vehicles affected by this Delivery Stop. Owners and dealers should be aware of the following:

"Do not deliver to a customer, a New, Certified Pre-Owned or Used vehicle subject to a Delivery Stop, until the vehicle is repaired. Do not use or sell replacement equipment/parts subject to a Delivery Stop."

This means that any new, certified pre-owned, or used 2024 BMW 330i (G20) vehicle impacted by SIB 61 26 24 cannot be sold or delivered to a customer until the necessary repair is completed.

Cause of the Issue

The root cause of this problem is identified as an excessively low tightening torque during the assembly process. This insufficient torque can lead to increased electrical resistance at the ground cable connections, potentially affecting vehicle electrical systems.

Repair Procedure Summary

The correction for the BMW 330i ground cable issue involves reworking the threaded connections of both the 12V and 48V ground lines located on the vehicle's underbody. The repair procedure, detailed in Service Information Bulletin (SIB) 61 26 24, includes several steps:

First, technicians must remove the center underbody protection and the rear engine undercover assemblies. Specific repair instructions for these steps are referenced as REP-REP-P-5147491-G20 - V.8 for the rear engine undercover and REP-REP-P-5147492-G20 - V.8 for the center underbody protection.

Next, both the 12V and 48V ground terminals must be torqued to the correct specification. The 12V transmission grounding strap/grounding cable body ground (typically identified by a purple circle in technical diagrams) needs to be torqued to 19 Nm. Similarly, the 48V Transmission EME 48 body ground, specifically location Z50*10B (identified by a yellow circle), also requires a torque of 19 Nm. These connections must be secured without any gaps.

Finally, the center underbody protection and the rear engine undercover assemblies are re-installed following the reverse of the removal instructions.

Required Tools or Parts

No specific new parts are required for this repair. The procedure focuses on correcting the tightening torque of existing components.

Claim Information

For dealers, reimbursement for this action is processed via normal claim entry using the applicable work package information. The Repair Code is 0012260600.

Two labor operation codes are available depending on the vehicle's status:

• Work Package #1 (Labor Operation 00 77 710): Used for vehicles where the repair is completed before the first customer delivery. This has a labor allowance of 5 FRU.
• Work Package #2 (Labor Operation 00 77 148): Used if the vehicle is already in the workshop and the Delivery Stop action is open. This has a labor allowance of 6 FRU.

Only one main work flat rate labor operation code can be claimed per workshop visit.

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Source: NHTSA ID: 11010763