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メルセデス・ベンツ 4Ba-177054M, 4Ba-118354M, 4Ba-118654M. Published by MLIT as 1232110 on 22 April 2021. Part: エンジン本体.

What the notice says ガソリンエンジンの点火プラグにおいて、製造指示が不適切なため、誤った仕様の点火プラグが装着されている。そのため、正常な燃焼が維持できず排気ガスが悪化するおそれがある。また、使用過程において熱負荷により当該プラグが破損して燃焼室内に脱落することでエンジンを損傷させ、最悪の場合、エンジンストールが発生するおそれがある。

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
1232110
Notified
22 April 2021
Make
Mercedes-Benz(メルセデス・ベンツ)
Sold as
メルセデスAMG A45S 4M+、メルセデスAMG CLA45S 4M+、メルセデスAMG CLA45S4M+SB
Model codes
4BA-177054M, 4BA-118354M, 4BA-118654M
Part at fault
エンジン本体
Vehicles covered
17
Filed as
Recall, imported vehicle
Register
Japan — Ministry of Land, Infrastructure, Transport and Tourism

What the ministry says is wrong

ガソリンエンジンの点火プラグにおいて、製造指示が不適切なため、誤った仕様の点火プラグが装着されている。そのため、正常な燃焼が維持できず排気ガスが悪化するおそれがある。また、使用過程において熱負荷により当該プラグが破損して燃焼室内に脱落することでエンジンを損傷させ、最悪の場合、エンジンストールが発生するおそれがある。

What is to be done about it

全車両、点火プラグを正規品に交換する。なお、点火プラグに破損がある場合は、他の損傷部位を点検し修理する。

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: エンジン本体

278 notices in this register name エンジン本体. 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 439 Japanese vehicle recall notifications filed in 2021.

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