Overview
| MLIT filing number | 1149070 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | March 9, 2021 |
| Manufacturer(s) | Mitsubishi |
| Component | Computer (engine) |
| Production period | May 29, 2013 — August 22, 2017 |
| Vehicles affected | 2,146 units |
Defect
On large route buses, the engine ECU control software is incorrect, allowing peak combustion pressure to exceed the allowable limit for the connecting rod. Continued use in this condition may cause the connecting rod to crack. In the worst case, the connecting rod may fracture, rendering the vehicle inoperable and causing a vehicle fire.
Corrective action
Reprogram the engine ECU control software on all vehicles with the corrected part.
Affected models & chassis ranges
This filing lists 9 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 |
|---|---|---|
| QDG-MP35FM | ふそうエアロスター | MP35FM-63002 — MP35FM-63519 |
| QDG-MP35FP | ふそうエアロスター | MP35FP-63001 — MP35FP-63533 |
| QKG-MP35FK | ふそうエアロスター | MP35FK-63001 — MP35FK-66030 |
| QKG-MP35FM | ふそうエアロスター | MP35FM-63001 — MP35FM-66134 |
| QKG-MP35FP | ふそうエアロスター | MP35FP-63003 — MP35FP-66109 |
| QKG-MP37FK | ふそうエアロスター | MP37FK-63001 — MP37FK-63549 |
| QKG-MP37FM | ふそうエアロスター | MP37FM-63001 — MP37FM-63518 |
| QKG-MP38FK | ふそうエアロスター | MP38FK-64011 — MP38FK-66439 |
| QKG-MP38FM | ふそうエアロスター | MP38FM-64001 — MP38FM-66176 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
大型路線バスにおいて、エンジンＥＣＵの制御プログラムが不適切なため、最大燃焼圧力がコンロッドの許容限度を超える場合がある。そのため、そのままの状態で使用を続けると、コンロッドに亀裂が生じ、最悪の場合、コンロッドが破損して走行不能及び火災に至るおそれがある。
改善措置
全車両、エンジンＥＣＵの制御プログラムを対策品に書き換える。
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=3004915
Related
All Mitsubishi recalls · All 2021 recalls · Recall Archive home