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 |
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