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Automotive · Japan · 2025-10-30

Origin: ドイツ連邦共和国

Volkswagen vehicles: electric brake booster control unit program insufficient review

Country	Japan
Category	Automotive
Published	2025-10-30
Country of origin	ドイツ連邦共和国
Manufacturer	Volkswagen Group Japan K.K.
Models affected	Passat 1.5 TSI, Passat GTE, Passat 2.0 TDI, Tiguan 1.5 TSI, Tiguan 2.0 TDI
Units affected	3555
Defect	In the control unit of the electric brake booster, due to insufficient review of the control program, if the system detects that the driver has released their hands from the steering wheel for a certain period while Travel Assist (※1) is active, the short braking operation performed by the system may be mistakenly detected as a braking operation performed by the driver, and Travel Assist may be deactivated. As a result, if the driver becomes unable to operate the vehicle, the system will not switch from Travel Assist to Emergency Assist (※2), will not sound a warning to the driver, and will n…
Component	Braking system (electric brake booster)
Remedy	For all vehicles, rewrite the control unit of the electric brake booster with the countermeasure program. Additionally, communication checks with other systems and readjustment of control logic, etc., will be performed.
Recall number	外-4054
Official notice	View source ↗

What this means for sellers

Likely platform / channel actions	OEMs/dealers will run the remedy (repair, replace or refund); component suppliers in the chain may face traceback.
Self-check for comparable products	Check your comparable products' design, materials and QC records against the defect described here.
Rules & standards likely involved	the destination market's product-safety rules and mandatory standards

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