In October 2024, Mazda filed a statutory recall with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Computer (Power Transmission), covering the CX-60. The filing affects 12,514 vehicles manufactured between July 2022 and August 27, 2024.
Overview
| MLIT filing number | 1155541 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | October 31, 2024 |
| Manufacturer(s) | Mazda |
| Component | Computer (Power Transmission) |
| Production period | July 2022 — August 27, 2024 |
| Vehicles affected | 12,514 units |
Filing in context
The Computer (Power Transmission) is the most frequently cited component category in this archive, appearing in 2 of its 4,890 filings. This filing is one of 23 Mazda notifications from 2024 in this archive. For scale, 1,489 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 the transmission control computer of mild hybrid vehicles, an incorrect clutch control program causes the engagement timing of the clutch connecting the motor and engine to shift during EV driving when the stopped engine is restarted. As a result, the piston may not be at the correct stop position required for restart, and the engine may fail to restart.
Corrective action
On all vehicles, reprogram both the transmission control computer and the engine control computer with the corrected/updated software, then perform transmission initialization learning.
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
①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、モータによるＥＶ走行中に停止したエンジンを再始動する際、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、エンジンを再始動するためのピストン停止位置からずれて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=3009874
Related recalls
Same manufacturer, close in filing date
Other Mazda filings closest to this one by filing date.
Computer (powertrain) — affects 13,747 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 (control unit) — affects 27,129 vehicles.
Open recall detail →Other recalls affecting the same models
Filings whose affected type codes overlap with this one, newest first.
Computer (Powertrain) — affects 9,422 vehicles.
Open recall detail →Other Device — affects 12,654 vehicles.
Open recall detail →Steering gearbox — affects 30,150 vehicles.
Open recall detail →Computer (engine) — affects 27,699 vehicles.
Open recall detail →Computer (engine) — affects 27,699 vehicles.
Open recall detail →