In December 2018, Lexus filed a statutory recall with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Computer (Engine), covering the LS500. The filing affects 4,770 vehicles manufactured between October 11, 2017 and September 14, 2018.
Overview
| MLIT filing number | 1143920 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | December 5, 2018 |
| Manufacturer(s) | Lexus |
| Component | Computer (Engine) |
| Production period | October 11, 2017 — September 14, 2018 |
| Vehicles affected | 4,770 units |
Filing in context
The Computer (Engine) is the most frequently cited component category in this archive, appearing in 49 of its 4,890 filings. This filing is one of 8 Lexus notifications from 2018 in this archive. For scale, 1,968 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 11 months.
Defect
The engine control computer contains an incorrect control program that prevents accurate calculation of intake air volume during engine restart immediately following an idling stop event. This causes unstable engine operation and, in the worst case, may result in an engine stall.
Corrective action
On all vehicles, reprogram the engine control computer with the corrected software.
Affected models & chassis ranges
This filing lists 2 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 |
|---|---|---|
| DBA-VXFA50 | ＬＳ５００ | VXFA50-6000001 — VXFA50-6003973 |
| DBA-VXFA55 | ＬＳ５００ | VXFA55-6000001 — VXFA55-6000841 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
エンジン制御用コンピュータにおいて、制御プログラムが不適切なため、アイドリングストップ直後の再始動時にエンジンの吸入空気量を正確に算出できないことがある。そのため、エンジン回転が不安定となり、最悪の場合、エンストするおそれがある。
改善措置
全車両、エンジン制御用コンピュータのプログラムを対策仕様に修正する。
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=3004412
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Open recall detail →Other recalls affecting the same models
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Open recall detail →Computer — affects 111,842 vehicles.
Open recall detail →