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Brakes Published 6 Nov 2001 Ref JP-1107790

Toyota: Computer (control device)

Translated from Japanese · machine translation

Safety-critical recall — brakes. If your vehicle is affected, contact your dealer before driving.
Country
Japan
Published
6 Nov 2001
Units affected
3345
Reference
JP-1107790

Affected vehicles

Toyota Estima Hybrid 2001

Hazard

In the electronically controlled primary braking system, foreign material may become lodged in the brake actuator (hydraulic control unit) due to manufacturing defects, causing hydraulic pressure to drop. Due to inappropriate control of the electric pump that generates braking hydraulic pressure, the fail-safe function does not operate. Approximately 5 minutes after the brake warning light illuminates and the warning buzzer sounds, the pump's protection function activates, the pump stops, hydraulic pressure decreases, and braking distance may increase.
Show original (日本語)
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。

Remedy

① All vehicles: Verify the manufacturing number of the brake actuator. Replace defective units (KC06–KI11) with good units. ② All vehicles: Replace the control computer with the corrective version.
Show original (日本語)
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。

Official source

View the official recall notice