WenmarOpen by Wenmar Pro

Service bulletin 09-045-23

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 id10248299
Published by NHTSA2024-01-04
Manufacturer's number09-045-23
Manufacturer's date2023-12-15
NHTSA componentELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

Some customers may experience a “Telematics Malfunction” message in the instrument cluster with DTC U3000:04-TCU (Telematics communication unit internal malfunction) stored in memory. This is caused by improper control software of the telematics communication unit (TCU). To eliminate this concern, the control software of the TCU has been modified.

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, Software

Trouble codes named

U3000

Vehicles listed
MAZDA CX-502023, 2024
MAZDA CX-902024

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

Recalls for the same vehicles and component
24V8170002024-10-31. ELECTRICAL SYSTEM:PROPULSION SYSTEM:INVERTER; ELECTRICAL SYSTEM:SOFTWARE
24V8140002024-10-31. STRUCTURE:INTERIOR PANELS:DASHBOARD; ELECTRICAL SYSTEM:SOFTWARE

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
15-003-232023-11-01. Service bulletin. While idling or parking, some customers may experience the i-ACTIVSENSE warning appears in the instrument cluster and the parking sensor OFF switch in the cluster switch illuminates. Upon inspection, any of the following DTC B1B** are stored in memory.
SA-004-22b2022-06-04. Service bulletin. Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure.
DRW462022-04-06. Service bulletin. The Apple Car Play and Android Auto (AA/CP) software in the vehicles below needs to be updated to the latest version. The affected vehicles were built with an older version of the software and AA/CP functions may not work correctly. The repair will be a CMU software update via USB stick.