In November 2001, Toyota filed a statutory recall with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Computer (control unit), covering the Estima Hybrid. The filing affects 3,345 vehicles manufactured between March 27, 2001 and October 12, 2001.
Overview
| MLIT filing number | 1107790 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | November 6, 2001 |
| Manufacturer(s) | Toyota |
| Component | Computer (control unit) |
| Production period | March 27, 2001 — October 12, 2001 |
| Vehicles affected | 3,345 units |
Filing in context
The Computer (control unit) is the most frequently cited component category in this archive, appearing in 14 of its 4,890 filings. This filing is one of 10 Toyota notifications from 2001 in this archive. For scale, 2,148 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 6 months.
Defect
In the electronically controlled service brake system, a machining defect allows foreign matter to become lodged in the brake actuator (hydraulic control unit), reducing hydraulic pressure. Due to improper control logic in the electric pump that generates brake hydraulic pressure, the fail-safe function does not activate. Approximately five minutes after the brake warning lamp illuminates and the warning buzzer sounds, the pump's protective function engages and shuts the pump down, further reducing hydraulic pressure and extending stopping distance.
Corrective action
① On all vehicles, verify the brake actuator serial number and replace any defective unit (serial numbers KC06 through KI11) with a non-defective part. ② On all vehicles, replace the brake control computer with a corrected part.
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 |
|---|---|---|
| ZA-AHR10W | ESTIMA HYBRID | AHR10-0001021 — AHR10-0004411 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
電子制御式主制動装置において、加工不良によりブレーキアクチュエータ（油圧制御装置 ）に異物が噛み込むことにより油圧が低下した場合、制動用油圧を発生させる電動式ポン プの制御が不適切なためフェールセーフ機能が働かず、ブレーキ警告灯が点灯し警告ブザ ーが鳴った約5分後に当該ポンプの保護機能が働いてポンプが停止して油圧が減少し、制 動距離が長くなるおそれがある。
改善措置
①全車両、ブレーキアクチュエータの製造番号を確認し、不良品（KC06～KI11）は良品と 交換する。 ②全車両、当該制御用コンピュータを対策品と交換する。
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=3000403
Related recalls
Same manufacturer, same component
Other Toyota filings involving the Computer (control unit), closest to this one by filing date.
Computer (control unit) — affects 40,941 vehicles.
Open recall detail →Computer (control unit) — affects 196,984 vehicles.
Open recall detail →Computer (control unit) — affects 60,260 vehicles.
Open recall detail →Computer (control unit) — affects 115,206 vehicles.
Open recall detail →Other recalls affecting the same models
Filings whose affected type codes overlap with this one, newest first.
Cooling System — affects 175,176 vehicles.
Open recall detail →Parking brake lever/pedal — affects 36,612 vehicles.
Open recall detail →Wiring — affects 4,388 vehicles.
Open recall detail →Service Brake — General — affects 544,172 vehicles.
Open recall detail →