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Service bulletin 0425MC774

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11024724
Published by NHTSA2025-11-03
Manufacturer's number0425MC774
Manufacturer's date2025-10-13
NHTSA componentELECTRICAL SYSTEM; UNKNOWN OR OTHER

NHTSA's summary

Due to a manufacturing process error, the electrical functions of the 43.5-liter top case (part number 77 43 8 829 760) may not work. The lighting in the interior of the top case and the USB-C charging option are inoperable. The cause is a faulty pin assignment of the wiring harness connector in the top case. For top cases that have not yet been delivered (retailer inventory), the top cases must be checked and the service solution completed prior to delivery to the customer. For top cases that have already been delivered to customers, the top cases must be checked and completed upon customer complaint relating to the specified fault pattern in the lighting and USB-C charging.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system

Vehicles listed
BMW C 400 GT2025

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
MC6106262026-08-27. Service campaign. Due to ongoing quality inspection it has been determined that due to inadequate sealing of the chassismodule (61 35 5 A9B E95 with revision indexes of 01, and 02) moisture can get into the control unit. As a result the moisture and cause corrosion which can lead to malfunctions of the chassis module.