Image available on the official notice.
Passenger cars (Mercedes-Benz S400d 4MATIC, S500 4MATIC) - Repair
Official notice
2 Dec 2021
Last checked
27 Oct 2026
An official CAA Japan notice concerns Passenger cars (Mercedes-Benz S400d 4MATIC, S500 4MATIC) - Repair. Defect in the seat (occupant detection system). ■ Defective component (part name): Seat (occupant detection system). ■ Condition and cause of the structure, equipment or performance deemed noncompliant with standards: Due to an inappropriate control program in the airbag control unit, the front passenger seat occupant detection system may stop operating. Consequently, it may fail to detect an occupant even when someone is seated, and the airbag may not deploy in a collision. Published 2021-12-02.
What to do now
(Recall) 外-3325. ■ Corrective measures: Rewrite the airbag control unit's control program with the corrective program on all vehicles.
Units affected
2,871
Recall number
外-3325
Official notice
2021-12-02
The hazard
The hazard
Defect in the seat (occupant detection system). ■ Defective component (part name): Seat (occupant detection system). ■ Condition and cause of the structure, equipment or performance deemed noncompliant with standards: Due to an inappropriate control program in the airbag control unit, the front passenger seat occupant detection system may stop operating. Consequently, it may fail to detect an occupant even when someone is seated, and the airbag may not deploy in a collision.
How to check if you're affected
How to check if you're affected
Compare the product name and identifiers below with the item you own. Check the official notice for the affected products and next steps.
Recall Numbers
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Affected products
Product 1
Units affected
Hazard
Where it was sold
Where it was sold
Retailer information is not currently available in RecallScope. Check the official notice for distribution details.
Location 1
Affected area 1
Company & contacts
Company & contacts
Brand: Mercedes-Benz. Contact: メルセデス・ベンツ日本株式会社. Phone 0120-086-880.
Source & status
Source & status
Recall details
Recall details
Recall number
Event id
Units affected
Source tier
Documents, notices & source
See the official notice and source documents for full details.
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