Overview
| MLIT filing number | 1149870 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | July 7, 2021 |
| Manufacturer(s) | Toyota |
| Component | Computer (Engine Control) |
| Production period | December 13, 2017 — June 11, 2021 |
| Vehicles affected | 50,983 units |
Defect
On vehicles equipped with an idling stop system, an incorrect control program combined with insufficient battery thermal insulation may cause the battery to reach and repeatedly operate at elevated temperatures during prolonged idling. Under these conditions, the regenerative charging intended to suppress battery degradation becomes insufficient, causing abnormal battery deterioration. As a result, the engine may fail to restart after an idling stop.
Corrective action
On all vehicles, update the engine control computer and idling stop computer programs to the corrected software. On certain vehicles, also replace the battery thermal insulation cover with a corrected part. In addition, inspect the battery for degradation and replace it with a new unit if abnormalities are found.
Affected models & chassis ranges
This filing lists 8 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 |
|---|---|---|
| 3BA-AGH30W | ALPHARD | AGH30-0157364 — AGH30-0378877; AGH30-9000002 — AGH30-9033255 |
| 3BA-AGH35W | ALPHARD | AGH35-0023190 — AGH35-0050602 |
| 3BA-GGH30W | ALPHARD | GGH30-0020908 — GGH30-0041705 |
| 3BA-GGH35W | ALPHARD | GGH35-0006721 — GGH35-0012899 |
| DBA-AGH30W | ALPHARD | AGH30-0157364 — AGH30-0378877 |
| DBA-AGH35W | ALPHARD | AGH35-0023190 — AGH35-0050602 |
| DBA-GGH30W | ALPHARD | GGH30-0020908 — GGH30-0041705 |
| DBA-GGH35W | ALPHARD | GGH35-0006721 — GGH35-0012899 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
アイドリングストップ搭載車において、制御プログラムが不適切かつバッテリの断熱が不十分なため、長時間アイドリングによりバッテリ温度が高い状態で使用を繰返すと、劣化抑制の再生充電が不足してバッテリが異常劣化することがある。そのため、アイドリングストップ後、再始動できなくなるおそれがある。
改善措置
全車両、エンジン制御用コンピュータおよびアイドリングストップコンピュータのプログラムを対策仕様に修正するとともに、一部車両に対しては、バッテリ断熱カバーを対策品に交換する。また、バッテリの劣化状態を点検し、異常がある場合は新品に交換する。
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=3005003