Mazda North American Operations recall 24V816

Affected vehicles (1)

Component / system

Defect

Mazda North American Operations (Mazda) is recalling certain 2024 CX-90 vehicles. The engine may not restart after the idling stop feature (i-stop) turns off the engine due to a software issue.

Risk / consequence

An engine that fails to restart increases the risk of a crash.

Remedy

Dealers will reprogram the powertrain control module (PCM) and the battery energy control module (BECM) software, free of charge. Owner notification letters were mailed December 19, 2024. Owners may contact Mazda customer service at 1-800-222-5500 Option 6. Mazda's number for this recall is 7024J.

Chronology of events

1. Nov 6, 2023

   November 6, 2023: Mazda received the first field report from the U.S. market and started an investigation.

2. November 2023

   November 2023 ~ January 2024: Mazda continued to investigate and identified that an incorrect program setting may have contributed to this issue and conducted further study into the root cause.

3. Jan 24, 2024

   January 24, 2024: NHTSA’s Office of Defects Investigation (“ODI”) notified Mazda of certain VOQs and field reports received alleging a loss of motive power in Mazda CX-90 vehicles located in the United States. Multiple discussions were held from February to October informing ODI of Mazda’s analyses of field information and ongoing investigations. Investigations included additional VOQs and field reports received during this period.

4. Apr 24, 2024

   April 24, 2024: Mazda implemented a mass production change with improved software in the PCM and BECM. 〜

5. Apr 25, 2024

   April 25, 2024 July 31, 2024: Mazda received an additional six (6) field reports from the U.S. market.

6. Aug 1, 2024

   August 1, 2024 ~ October 15, 2024: Mazda engaged in the final stages of an investigation aimed at assessing the affected markets and vehicle populations.

7. Oct 25, 2024

   October 25, 2024: Mazda held a Quality Audit Committee meeting to review all available information to date and approved a field action on subject MY2024 CX-90 MHEV vehicles. As of October 25, 2024, Mazda is not aware of any reports of accidents or injuries related to this concern. Also, as of this date, seven (7) field reports have been received by the United States and its Territory markets.

Notification schedule

Dealer notification

NOV 05, 2024 - NOV 05, 2024

Owner notification

DEC 30, 2024 - DEC 30, 2024