In June 2011, Toyota filed a statutory recall with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Steering Gearbox, covering the Prius. The filing affects 47,784 vehicles manufactured between October 1997 and May 30, 2003.
Overview
| MLIT filing number | 1127510 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | June 1, 2011 |
| Manufacturer(s) | Toyota |
| Component | Steering Gearbox |
| Production period | October 1997 — May 30, 2003 |
| Vehicles affected | 47,784 units |
Filing in context
The Steering Gearbox is the most frequently cited component category in this archive, appearing in 9 of its 4,890 filings. This filing is one of 15 Toyota notifications from 2011 in this archive. For scale, 775 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 5 years and 7 months.
Defect
In the electric power steering gearbox, repeatedly turning the steering wheel hard to full lock can cause the pinion shaft retaining nut to loosen. With continued use, the pinion shaft can no longer be held securely, preventing full transfer of motor assist force and making the steering heavy. In the worst case, steering control may be lost entirely.
Corrective action
On all vehicles, replace the affected nut with a crimped (staked) nut.
Affected models & chassis ranges
This filing lists 2 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 |
|---|---|---|
| HK-NHW10 | PRIUS | NHW10-0001002 — NHW10-0039786 |
| ZA-NHW11 | PRIUS | NHW11-0001004 — NHW11-0088780 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
電動式パワーステアリングギヤボックスにおいて、ハンドルを強く一杯に切るような操作を繰り返すと、ピニオンシャフト固定用ナットが緩むことがある。そのため、そのまま使用を続けると、ピニオンシャフトが固定できないためにモータの力が十分伝達されずハンドルが重くなり、最悪の場合、ハンドル操作ができなくなるおそれがある。
改善措置
全車両、当該ナットをかしめナットと交換する。
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=3002586
Related recalls
Same manufacturer, same component
Other Toyota filings involving the Steering Gearbox, closest to this one by filing date.
Other recalls affecting the same models
Filings whose affected type codes overlap with this one, newest first.
Other (Engine) — affects 268,570 vehicles.
Open recall detail →Airbag — affects 16 vehicles.
Open recall detail →Seat Belt — affects 57,947 vehicles.
Open recall detail →Power steering — affects 3,369 vehicles.
Open recall detail →