In November 2012, Toyota filed a statutory recall with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Cooling System, covering the Prius, Estima Hybrid and 3 more models. The filing affects 175,176 vehicles manufactured between August 22, 2000 and December 16, 2011.
Overview
| MLIT filing number | 1130552 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | November 14, 2012 |
| Manufacturer(s) | Toyota |
| Component | Cooling System |
| Production period | August 22, 2000 — December 16, 2011 |
| Vehicles affected | 175,176 units |
Filing in context
The Cooling System is the most frequently cited component category in this archive, appearing in 34 of its 4,890 filings. This filing is one of 21 Toyota notifications from 2012 in this archive. For scale, 290 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 11 years and 3 months.
Defect
In the electric water pump for the hybrid system inverter (the device that converts high-voltage DC to AC), an improper coil winding process during manufacturing caused damage to the coil wire on some units. Corrosion of the damaged wire leads to a broken wire, stopping the water pump and triggering a warning light and reduced-output driving mode. If an inter-winding short circuit occurs, the power fuse blows and the vehicle may become inoperable.
Corrective action
On all vehicles, replace the water pump with the corrected part.
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 |
|---|---|---|
| CAA-AHR10W | ESTIMA HYBRID | AHR10-0001055 — AHR10-0014394; AHR10-2000001 — AHR10-2014001 |
| CAA-ATH10W | ALPHARD HYBRID | ATH10-0001007 — ATH10-0025620 |
| CAA-GBS12 | CROWN SEDAN | GBS12-0001017 — GBS12-0003626 |
| DAA-ATH10W | ALPHARD HYBRID | ATH10-0001007 — ATH10-0025620 |
| DAA-NHW20 | PRIUS | NHW20-0001043 — NHW20-0133242; NHW20-3000002 — NHW20-3589297; NHW20-7000004 — NHW20-7091203; NHW20-7500006 — NHW20-7894049 |
| ZA-AHR10W | ESTIMA HYBRID | AHR10-0001055 — AHR10-0014394; AHR10-2000001 — AHR10-2014001 |
| ZA-ATH10W | ALPHARD HYBRID | ATH10-0001007 — ATH10-0025620 |
| ZA-GBS12 | CROWN SEDAN | GBS12-0001017 — GBS12-0003626 |
| ZA-NHW20 | PRIUS | NHW20-0001043 — NHW20-0133242; NHW20-3000002 — NHW20-3589297; NHW20-7000004 — NHW20-7091203; NHW20-7500006 — NHW20-7894049 |
| ZBA-HEU20W | ＴＯＹＯＴＡ ＦＣＨＶ－ａｄｖ | HEU20-0001101 — HEU20-0001125 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
②ハイブリッドシステムの電圧変換器（インバータ）用電動ウォータポンプにおいて、コイルの巻き線工程が不適切なためコイル線に傷がついたものがある。そのため、コイル線の腐食断線によりウォータポンプが停止して警告灯点灯や出力制限走行となる。また、線間ショートした場合には、電源ヒューズが切れて走行不能となるおそれがある。 インバータ：高電圧の直流を交流に変換する装置
改善措置
②全車両、当該ウォータポンプを対策品に交換する。
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=3002911
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