MLIT Improvement Campaign · Japan

Improvement Campaign 2107110 — Service brake (general)

Filed January 31, 2025 · Honda

Overview

MLIT filing number2107110
TypeImprovement Campaign (manufacturer improvement measure / 改善対策)
Date filedJanuary 31, 2025
Manufacturer(s)Honda
ComponentService brake (general)
Production periodSeptember 12, 2023 — November 20, 2024
Vehicles affected245,739 units

Issue

In the Vehicle Stability Assist (VSA) system, an incorrect air conditioning shutoff control program setting may reduce vacuum supply to the brake booster during low-speed driving immediately after engine start. Additionally, an incorrect brake hydraulic pressure control program setting — which is intended to assist brake pedal effort when booster vacuum is insufficient — may prevent brake hydraulic pressure from being properly adjusted under the same low-speed, post-start conditions. When booster vacuum is insufficient or brake hydraulic pressure cannot be properly adjusted, brake pedal effort may increase.

Corrective action

On all vehicles, reprogram the VSA modulator with the corrected/updated 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)ModelChassis ranges
6BA-JF5 N-BOX JF5-1000010 — JF5-1144569; JF5-2000008 — JF5-2056409; JF5-8000002 — JF5-8003166; JF5-5000007 — JF5-5004644; JF5-6000004 — JF5-6003510
6BA-JF6 N-BOX JF6-1000006 — JF6-1025071; JF6-2000010 — JF6-2010345; JF6-8000005 — JF6-8000901; JF6-5000003 — JF6-5000877; JF6-6000007 — JF6-6000749

Original Japanese (MLIT source text)

Show the original Japanese filing text

状況

車両挙動安定化制御システム(ビークル スタビリティ アシスト:VSA)において、エアコン停止制御プログラムの設定が不適切なため、エンジン始動直後の低速走行時にブレーキ倍力装置への負圧供給が低下することがある。 また、ブレーキ倍力装置への負圧が不足した際にブレーキペダルの操作力を補助するブレーキ液圧制御プログラムの設定が不適切なため、エンジン始動直後の低速走行時にブレーキ液圧を適切に調整できないことがある。 そのため、ブレーキ倍力装置の負圧が不足した場合やブレーキ液圧を適切に調整できない場合に、ブレーキペダルの操作力が増大するおそれがある。

改善措置

全車両、VSAモジュレータのプログラムを対策プログラムへ書き換える。

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=3009972

Check your own vehicle: to see whether this filing affects a specific chassis number — and find every other recall for it — use the chassis lookup on the home page.

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