In June 2021, Daihatsu, Lexus & Toyota filed a statutory recall with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Other (electrical system), covering the Noah, Prius Alpha and 6 more models. The filing affects 24,162 vehicles manufactured between November 27, 2020 and April 14, 2021.
Overview
| MLIT filing number | 1149660 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | June 1, 2021 |
| Manufacturer(s) | Daihatsu, Lexus, Toyota |
| Component | Other (electrical system) |
| Production period | November 27, 2020 — April 14, 2021 |
| Vehicles affected | 24,162 units |
Filing in context
This notification is a joint filing by 3 manufacturers: Daihatsu, Lexus & Toyota.
The Other (electrical system) is the most frequently cited component category in this archive, appearing in 6 of its 4,890 filings. This filing is one of 8 Daihatsu notifications from 2021 in this archive. For scale, 1,125 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 4 months.
Defect
In the hybrid system, the power conversion module control board has insufficient electrical noise immunity. Voltage fluctuations in the high-voltage circuit generate electrical noise that the power control circuit misidentifies as a fault, causing it to shut down momentarily. This brief drop in supply voltage may trigger the engine warning lamp and cause a temporary loss of drive power.
Corrective action
On all vehicles, inspect the power conversion module and replace it with the corrected part if applicable.
Affected models & chassis ranges
This filing lists 10 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 |
|---|---|---|
| 6AA-NHP10 | AQUA | NHP10-2705106 — NHP10-2717724 |
| 6AA-NHP170G | SIENTA | NHP170-7237145 — NHP170-7245179 |
| 6AA-NTP10 | ＪＰＮ ＴＡＸＩ | NTP10-2000130 — NTP10-2001868 |
| 6AA-ZVW40W | PRIUS ALPHA | ZVW40-0037752 — ZVW40-0037935 |
| 6AA-ZVW41N | MEBIUS | ZVW41-0091225 |
| 6AA-ZVW41W | PRIUS ALPHA | ZVW41-0091033 — ZVW41-0091491 |
| 6AA-ZWA10 | ＣＴ２００ｈ | ZWA10-2372030 — ZWA10-2373302 |
| 6AA-ZWR80G | NOAH | ZWR80-0488443 — ZWR80-0497752 |
| 6AA-ZWR80W | NOAH | ZWR80-0488443 — ZWR80-0497752 |
| 6AE-NHP160V | PROBOX | NHP160-0027963 — NHP160-0031892 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
ハイブリッドシステムにおいて、電力変換モジュール制御基板の電気ノイズ耐性不足により、高電圧回路の電圧変動で発生する電気ノイズを電源制御回路が異常と誤検知し瞬間的に停止する場合がある。そのため、電源電圧が一瞬低下して、エンジン警告灯の点灯とともに、一時的な動力損失が発生するおそれがある。
改善措置
全車両、電力変換モジュールを点検し、対象となるものは対策品に交換する。
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=3004981
Related recalls
Same manufacturer, same component
Other Daihatsu filings involving the Other (electrical system), closest to this one by filing date.
Other recalls affecting the same models
Filings whose affected type codes overlap with this one, newest first.
Parking Lever / Pedal — affects 580,792 vehicles.
Open recall detail →Other — affects 405,714 vehicles.
Open recall detail →Fuel pump — affects 328,108 vehicles.
Open recall detail →Exhaust pipe — affects 23,586 vehicles.
Open recall detail →Engine assembly — affects 259,991 vehicles.
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