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メルセデス・ベンツ 5Aa-238359, 4Aa-238361, 4Aa-167161, 4Aa-167361, 7Aa-167189, 7Aa-167989. Published by MLIT as 1233700 on 31 March 2022. Part: コンピュータ.

What the notice says (1)48vスタータオルタネータを搭載した48vバッテリ管理システムにおいて、制御プログラムが不適切なため、他のシステムとの同期不良が発生することがある。そのため、エンジンの始動遅れや、エンジン警告灯が表示されず一時的にエンジンが始動しない、又はエンジンが始動してもエンジン警告灯が点灯したままになるおそれがある。 (2)48vスタータオルタネータを搭載した48vバッテリ管理システムにおいて、制御プログラムが不適切なため、48vバッテリの内部スイッチが入らずに電源供給が開始されないことがある。そのため、48vシステムが起動せず、エンジン警告灯が点灯してエンジンが始動しなくなるおそれがある。

Is your vehicle included? Check with your VIN at MLIT, or ask a dealer. This page is an independent copy of the notice, kept so you can see what changed after it was published. It is not the authority, and the authority’s own text is the one to act on.

Notification number
1233700
Notified
31 March 2022
Make
Mercedes-Benz(メルセデス・ベンツ)
Sold as
E450 4MATIC クーペ、メルセデスAMG E53 4M+ クーペ、メルセデスAMG GLE53 4M+、メルセデスAMG GLE53 4M+ C、メルセデスAMG GLE63S 4M+、メルセデスAMG GLS63 4M+、メルセデスAMG GT43 4M+、メルセデスAMG GT53 4M+
Model codes
5AA-238359, 4AA-238361, 4AA-167161, 4AA-167361, 7AA-167189, 7AA-167989, 4AA-290659C, 4AA-290661
Part at fault
コンピュータ
Vehicles covered
20
Filed as
Recall, imported vehicle
Register
Japan — Ministry of Land, Infrastructure, Transport and Tourism

What the ministry says is wrong

(1)48Vスタータオルタネータを搭載した48Vバッテリ管理システムにおいて、制御プログラムが不適切なため、他のシステムとの同期不良が発生することがある。そのため、エンジンの始動遅れや、エンジン警告灯が表示されず一時的にエンジンが始動しない、又はエンジンが始動してもエンジン警告灯が点灯したままになるおそれがある。 (2)48Vスタータオルタネータを搭載した48Vバッテリ管理システムにおいて、制御プログラムが不適切なため、48Vバッテリの内部スイッチが入らずに電源供給が開始されないことがある。そのため、48Vシステムが起動せず、エンジン警告灯が点灯してエンジンが始動しなくなるおそれがある。

What is to be done about it

(1)(2)全車両、48Vバッテリ管理システムの制御プログラムを対策プログラムに書き換える。

The two passages above are quoted in Japanese because that is the language the ministry published them in. This site keeps the wording a register had when it was read, and does not translate a safety notice.

Source: Ministry of Land, Infrastructure, Transport and Tourism website (出典:国土交通省ウェブサイト), used under the Public Data License 1.0. This site gathered the record, grouped it by notification number and set it in English around the ministry's own words; the notice itself is unaltered. CarsMultiverse is not the ministry and not a safety authority. To act on this notice, use the ministry's own document.

The Japanese register on this site

メルセデス・ベンツ elsewhere in this register

メルセデス・ベンツ is named on 444 notices in the copy of MLIT’s register held here, of which these are the nearest to this one in time.

The same part: コンピュータ

97 notices in this register name コンピュータ. A defect that keeps returning under one heading is worth reading as a group rather than one notice at a time.

Reading this against the source

This page is what MLIT published in the recall notices it publishes, kept as it was read. The authority publishes only its current wording; if a notice is rewritten, the earlier version disappears there and is kept here. The whole register is at /japan, and how the reading is done is set out in the method.

This register keeps an index of its own for every maker and every year it holds: Japanese recalls on a Mercedes-Benz: 450 in the register, and 415 Japanese vehicle recall notifications filed in 2022.

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