All recalls
Loss of control Published 10 Aug 2023 Ref JP-1153650

Komatsu: Computer (Power Transmission)

Translated from Japanese · machine translation

Safety-critical recall — loss of control. If your vehicle is affected, contact your dealer before driving.
Country
Japan
Published
10 Aug 2023
Units affected
39
Reference
JP-1153650

Affected vehicles

Komatsu WA470-10 2019–2023

Hazard

In the work equipment controller of the shovel loader, due to an improper program, if the power supply voltage drops during the self-diagnosis routine that automatically initiates after the key is turned ON, the self-diagnosis will not complete normally. Although normal travel and work operation can be performed in this state, if a transmission wiring short circuit coincidentally occurs during travel, the vehicle will make an emergency stop.
Show original (日本語)
ショベル・ローダの作業機コントローラにおいて、プログラムが不適切なため、キーON後に自動的に開始される自己故障診断中に電源電圧が低下すると、自己故障診断が正常に終了しない状態となる。 なお、この状態でも走行および作業は正常に行えるが、万が一走行中にトランスミッションの配線短絡を併発した場合、急停止する。

Remedy

For all vehicles, reprogram the work equipment controller with the corrected program version.
Show original (日本語)
全車両、作業機コントローラのプログラムを修正版プログラムに書き換える。

Official source

View the official recall notice