In January 2023, UD Trucks filed a statutory recall with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Computer (steering), covering the Quon. The filing affects 387 vehicles manufactured between September 13, 2022 and November 2022.
Overview
| MLIT filing number | 1152740 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | January 24, 2023 |
| Manufacturer(s) | UD Trucks |
| Component | Computer (steering) |
| Production period | September 13, 2022 — November 2022 |
| Vehicles affected | 387 units |
Filing in context
The Computer (steering) is the most frequently cited component category in this archive, appearing in 7 of its 4,890 filings. This filing is one of 12 UD Trucks notifications from 2023 in this archive. For scale, 3,268 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 2 months.
Defect
On vehicles equipped with the electronically controlled steering system (UDAS) and the Lane Change Support function (LCS), the Driver Assistance Control Unit (DACU) program is incorrectly configured. When LCS detects a vehicle on the left side and the driver activates the turn signal, the Lane Departure Prevention function (LDP) and Lane Departure Warning System (LDWS) are not disabled as intended. Consequently, if the vehicle begins to drift toward the left lane boundary, LDP activates an alert tone and applies steering intervention, and LDWS flashes a warning light and sounds a buzzer.
Corrective action
Reprogram the Driver Assistance Control Unit on all vehicles with corrected software.
Affected models & chassis ranges
This filing lists 5 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 |
|---|---|---|
| 2PG-CG4FA | QUON | JNCMBM0G2PU076896 |
| 2PG-CG5FA,2RG | QUON | JNCMC10G3PU076210 |
| 2PG-GK5DAB | QUON | JNCMC12A8PU076213 |
| 2RG-CG5EA | QUON | JNCMC10G8PU077496 |
| 2RG-GK5DAB | QUON | JNCMCJ0A7PU076223 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
電子制御操舵装置（ＵＤＡＳ）搭載の車線変更支援機能（ＬＣＳ：レーンチェンジサポート）装備車両において、運転者補助制御ユニット（ＤＡＣＵ）のプログラム設定が不適切なため、ＬＣＳが左側方車両を検知した状態で方向指示器を操作しても車線逸脱抑制機能（ＬＤＰ）および車線逸脱警報装置（ＬＤＷＳ）が無効化されない。そのため、左車線からはみ出しそうになるとＬＤＰは警報音と操舵介入が作動し、ＬＤＷＳは警告灯の点滅とブザーが吹鳴する。
改善措置
全車両、運転者補助制御ユニットのプログラムを対策プログラムに書き換える。
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=3009131
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All UD Trucks recalls · All 2023 recalls · Recall Archive home