In October 2024, Mazda filed a statutory recall with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Computer (engine), covering the CX-60. The filing affects 12,965 vehicles manufactured between July 2022 and August 27, 2024.
Overview
| MLIT filing number | 1155543 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | October 31, 2024 |
| Manufacturer(s) | Mazda |
| Component | Computer (engine) |
| Production period | July 2022 — August 27, 2024 |
| Vehicles affected | 12,965 units |
Filing in context
The Computer (engine) is the most frequently cited component category in this archive, appearing in 16 of its 4,890 filings. This filing is one of 23 Mazda notifications from 2024 in this archive. For scale, 1,470 of the 4,890 filings in this archive report a larger number of affected vehicles; the vehicles involved here were manufactured over a span of about 2 years and 1 month.
Defect
In mild hybrid vehicles, the engine control computer and mild hybrid battery use improper battery control logic, which may cause voltage differences to develop between cells inside the battery. Continued use allows these voltage differences to grow, triggering a fault judgment at engine startup. This causes the engine warning light to illuminate and a "Hybrid System Malfunction" message to appear on the instrument cluster, and motor assist may stop. If a fault judgment occurs during a vehicle-speed idling stop, in the worst case the engine may fail to restart, resulting in a stall.
Corrective action
On all vehicles, reprogram the engine control computer and mild hybrid battery control module with the corrected/updated software.
Affected models & chassis ranges
This filing lists 1 type code(s). A vehicle is affected if its chassis number falls within one of the ranges below.
| Type code (型式) | Model | Chassis ranges |
|---|---|---|
| 3CA-KH3R3P | ＣＸ－６０ | KH3R3P-100013 — KH3R3P-113761 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
③マイルドハイブリッド車のエンジン制御コンピュータとマイルドハイブリッド用バッテリにおいて、バッテリ制御が不適切なため、バッテリ内部のセルに電圧差が生じることがある。そのため、そのまま使用を続けると電圧差が大きくなり、エンジン始動時に故障判定してエンジン警告灯が点灯し、メータに「ハイブリッドシステム異常」のメッセージが表示され、モータアシストが停止するおそれがある。有車速アイドリングストップ時に故障判定すると、最悪の場合、エンジンが再始動できずエンストするおそれがある。
改善措置
③全車両、エンジン制御コンピュータとマイルドハイブリッド用バッテリの制御プログラムを対策プログラムに修正する。
Source & verification
This entry reproduces public data from Japan's MLIT recall registry. English text is jdmvin.com's own translation; always verify against the official source:
https://renrakuda.mlit.go.jp/renrakuda/ris-detail-car.html?class=recalldatacar&id=3009876
Related recalls
Same manufacturer, same component
Other Mazda filings involving the Computer (engine), closest to this one by filing date.
Computer (engine) — affects 27,699 vehicles.
Open recall detail →Computer (engine) — affects 27,699 vehicles.
Open recall detail →Computer (engine) — affects 879 vehicles.
Open recall detail →Other recalls affecting the same models
Filings whose affected type codes overlap with this one, newest first.
Computer (Power Transmission) — affects 12,514 vehicles.
Open recall detail →Computer (powertrain) — affects 13,747 vehicles.
Open recall detail →Other — affects 34,442 vehicles.
Open recall detail →Other (electrical equipment) — affects 2 vehicles.
Open recall detail →Computer (Powertrain) — affects 9,422 vehicles.
Open recall detail →