In December 2018, UD Trucks filed an improvement campaign with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Computer (Control System), covering the Quon. The filing affects 8,493 vehicles manufactured between April 28, 2017 and November 13, 2018.
Overview
| MLIT filing number | 2105640 |
|---|---|
| Type | Improvement Campaign (manufacturer improvement measure / 改善対策) |
| Date filed | December 12, 2018 |
| Manufacturer(s) | UD Trucks |
| Component | Computer (Control System) |
| Production period | April 28, 2017 — November 13, 2018 |
| Vehicles affected | 8,493 units |
Filing in context
The Computer (Control System) is the most frequently cited component category in this archive, appearing in 8 of its 4,890 filings. This filing is one of 35 UD Trucks notifications from 2018 in this archive. For scale, 1,708 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 1 year and 6 months.
Issue
On vehicles equipped with the collision damage mitigation braking system (Traffic Eye Brake System), a functional limitation in the millimeter-wave radar obstacle detection software may rarely cause the system to misidentify millimeter-wave returns as a forward obstacle when passing through an underpass structure or traveling near a highway entrance/exit gate in the absence of a preceding vehicle. When this occurs, a warning is displayed on the monitor and an audible alert sounds, and unexpected emergency braking may be applied.
Corrective action
On all vehicles, reprogram the millimeter-wave radar obstacle detection software with the corrected updated software.
Affected models & chassis ranges
This filing lists 23 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-CD5AL | QUON | JNCMBN0C7HU026287 — JNCMBN0C4KU038324 |
| 2PG-CD5BA | QUON | JNCMBN0C8HU021910 — JNCMB02CXKU038151 |
| 2PG-CD5BL | QUON | JNCMB02C3HU025945 — JNCMB02CXKU038800 |
| 2PG-CD5CA | QUON | JNCMB02C1HU016208 — JNCMB02C7KU038902 |
| 2PG-CD5CE | QUON | JNCMB02C3JU028303 — JNCMB02C5KU038428 |
| 2PG-CD5CL | QUON | JNCMB02C6HU018195 — JNCMB02C2KU038886 |
| 2PG-CG5BA | QUON | JNCMB02G9HU025953 — JNCMB02G9KU037530 |
| 2PG-CG5BE | QUON | JNCMB02G5JU034378 — JNCMB02G5JU037104 |
| 2PG-CG5BL | QUON | JNCMB02G0JU033297 |
| 2PG-CG5CA | QUON | JNCMB02GXHU017229 — JNCMB02G9KU038919 |
| 2PG-CG5CE | QUON | JNCMB02GXJU028334 — JNCMB02G3KU038916 |
| 2PG-CG5CL | QUON | JNCMB02G5HU022337 — JNCMB02GXKU038878 |
| 2PG-CW5AL | QUON | JNCMB02D5HU017046 — JNCMB02D0KU038457 |
| 2PG-CW5BL | QUON | JNCMB02D1HU022941 — JNCMB02D7KU038407 |
| 2PG-CW5CA | QUON | JNCMB02D7HU022507 — JNCMB02D3KU038369 |
| 2PG-CW5CL | QUON | JNCMBP0D0HU022005 — JNCMB02D6KU038933 |
| 2PG-CW5CL改 | QUON | JNCMBP0D0HU022005 — JNCMB02D6KU038933 |
| 2PG-CX5BA | QUON | JNCMB02D6HU024538 — JNCMB02D8KU038383 |
| 2PG-CX5BL | QUON | JNCMB02D3HU026151 — JNCMB02D1KU038452 |
| 2PG-GK5AAB | QUON | JNCMBP0A3HU022537 — JNCMBP0A1KU038937 |
| 2PG-GK5AAD | QUON | JNCMB22A4JU027834 — JNCMB22AXKU038449 |
| 2PG-GK5AAE | QUON | JNCMB22A7JU029657 — JNCMB02A0KU038898 |
| 2PG-GK5AAK | QUON | JNCMB02A1JU034874 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
衝突被害軽減制動制御装置（トラフィックアイブレーキシステム）装着車において、ミリ波レーダによる障害物検知プログラムの機能限界により、先行車がいない状況下で道路等の下を潜る構造のアンダーパス道路を通過する時や高速道路の出入口ゲート付近を走行した際に、ミリ波情報を稀に前方障害物と誤認識することがある。そのため、表示モニタに警告表示がされるとともに警告音を発し、使用者の予期せぬ急制動がかかるおそれがある。
改善措置
全車両、ミリ波レーダの障害物検知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=3008877
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Open recall detail →All UD Trucks recalls · All 2018 recalls · Recall Archive home