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Service bulletin 04-003-23

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 id10238665
Published by NHTSA2023-07-05
Manufacturer's number04-003-23
Manufacturer's date2023-06-13
NHTSA componentPARKING BRAKE

NHTSA's summary

When entering the Emergency Parking Brake (EPB) maintenance mode, if only one side of the parking brake is fully released, the vehicle may be stuck in the EPB maintenance mode. To eliminate this concern, the control software of the DSC HU/CM 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

Brakes, Parking brake

Vehicles listed
MAZDA CX-502023

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
SA-011-232023-04-04. Service bulletin. If a vehicle is stuck in the EPB (Electronic Parking Brake) maintenance mode or cannot be put into the maintenance mode, use the repair procedure below to continue or complete the repairs. This happens when the MAINTENANCE MODE procedure is not followed exactly. CAUTIONS will be added to the WSM procedure, but until then, take note of these CAUTIONS: