In October 2024, Mazda filed a statutory recall with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Computer (powertrain), covering the CX-60. The filing affects 13,747 vehicles manufactured between July 2022 and August 27, 2024.
Overview
| MLIT filing number | 1155542 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | October 31, 2024 |
| Manufacturer(s) | Mazda |
| Component | Computer (powertrain) |
| Production period | July 2022 — August 27, 2024 |
| Vehicles affected | 13,747 units |
Filing in context
The Computer (powertrain) is the most frequently cited component category in this archive, appearing in 14 of its 4,890 filings. This filing is one of 23 Mazda notifications from 2024 in this archive. For scale, 1,433 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 transmission control computer uses improper clutch control logic. Immediately after the engine shuts down and the vehicle switches to EV operation on motor power alone, the clutch engagement timing between the motor and engine may be off when the engine attempts to restart. As a result, engine speed fails to rise and the engine may not restart.
Corrective action
On all vehicles, reprogram the transmission control computer and engine control computer with the corrected/updated software, then perform the initial transmission learning procedure.
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
②マイルドハイブリッド車のトランスミッション制御コンピュータにおいて、クラッチ制御が不適切なため、エンジンを停止してモータによるＥＶ走行へ切り替わった直後に、停止したエンジンが再始動する際、モータとエンジンを繋ぐクラッチの締結タイミングがずれることがある。そのため、エンジン回転が上昇せず、再始動できないおそれがある。
改善措置
①②全車両、トランスミッション制御コンピュータとエンジン制御コンピュータの制御プログラムを対策プログラムに修正し、トランスミッションの初期学習を実施する。
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=3009875
Related recalls
Same manufacturer, same component
Other Mazda filings involving the Computer (powertrain), closest to this one by filing date.
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 (engine) — affects 12,965 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 →