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Published 28 Jan 2021 Ref JP-1148780

Daihatsu/Subaru: Computer (Powertrain Transmission)

Translated from Japanese · machine translation

Country
Japan
Published
28 Jan 2021
Units affected
624105
Reference
JP-1148780

Affected vehicles

Daihatsu Atrai Wagon 2014–2020 Daihatsu Hijet 2014–2020 Daihatsu Hijet Deck Van 2014–2020 Daihatsu Hijet Truck 2014–2020 Subaru Sambar 2014–2020 Subaru Sambar Truck 2014–2020

Hazard

In the powertrain transmission system, valve bodies may experience abnormal wear causing hydraulic fluid leakage. Additionally, when hydraulic leakage occurs, the AT control computer program may be inappropriate, resulting in failure to detect faults correctly. As a result, hydraulic leakage cannot be detected properly, and if vehicle operation continues in this state, the leakage may increase. In the worst case, unintended clutch engagement may occur, causing temporary severe deceleration.
Show original (日本語)
動力伝達装置において、バルブボデーが異常摩耗し油圧漏れが発生するものがある。また、油圧漏れが発生した際に、AT制御コンピュータのプログラムが不適切なため、故障検知を正しく行わないものがある。そのため、油圧漏れを正しく検出できず、そのままの状態で使用を続けると、油圧漏れが大きくなり、最悪の場合、意図せぬクラッチが係合し、一時的に急減速するおそれがある。

Remedy

Due to the time required for verification of abnormal valve body wear, all vehicles will have their AT control computer programs rewritten with corrective software, and hydraulic leakage will be inspected. If leakage is confirmed, the valve body will be replaced with a new unit. Once the cause of abnormal valve body wear is identified, further measures will be taken as necessary.
Show original (日本語)
バルブボデーの異常摩耗の検証に時間を要するため、全車両、AT制御コンピュータのプログラムを対策プログラムに書き換えるとともに、油圧漏れを点検し、油圧漏れが確認できた場合には、バルブボデーを新品と交換する。なお、バルブボデーの異常摩耗については原因が特定でき次第、必要に応じて措置を講じる。

Official source

View the official recall notice