In December 2023, Toyota filed a statutory recall with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Computer (powertrain), covering the Supra. The filing affects 18 vehicles manufactured between May 22, 2023 and August 2023.
Overview
| MLIT filing number | 1154250 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | December 6, 2023 |
| Manufacturer(s) | Toyota |
| Component | Computer (powertrain) |
| Production period | May 22, 2023 — August 2023 |
| Vehicles affected | 18 units |
Filing in context
The Computer (powertrain) is the most frequently cited component category in this archive, appearing in 14 of its 4,890 filings. This filing is one of 46 Toyota notifications from 2023 in this archive. For scale, 4,451 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 3 months.
Defect
In the automatic transmission control computer (ECU), inadequate management of the welding equipment during production results in defective welds at the ECU case joint. With continued use, transmission fluid may penetrate the case interior, and metallic particles within the fluid may form a short circuit. In the worst case, the vehicle may become inoperable.
Corrective action
On all vehicles, replace the valve body assembly with one containing a conforming automatic transmission control computer.
Affected models & chassis ranges
This filing lists 3 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 |
|---|---|---|
| 3BA-DB06 | SUPRA | DB06-0058723 — DB06-0058735 |
| 3BA-DB26 | SUPRA | DB26-0058813 — DB26-0059232 |
| 3BA-DB86 | SUPRA | DB86-0058815 — DB86-0059199 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
自動変速機内の制御コンピュータ（ＥＣＵ）において、溶接機の管理が不適切なため、ＥＣＵケース接合面に溶接不良のものがある。そのため、そのままの状態で使用を続けると、トランスミッションフルードがケース内部に浸入してフルード内の金属粉により短絡回路が形成され、最悪の場合、走行不能となるおそれがある。
改善措置
全車両、良品の自動変速機制御コンピュータを搭載したバルブボデーと交換する。
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=3009577
Related recalls
Same manufacturer, same component
Other Toyota filings involving the Computer (powertrain), closest to this one by filing date.
Other recalls affecting the same models
Filings whose affected type codes overlap with this one, newest first.