Image available on the official notice.
Passenger cars (Mercedes-Benz S400d 4MATIC, S500 4MATIC) - Repair
Official notice
27 Apr 2022
Last checked
27 Oct 2026
An official CAA Japan notice concerns Passenger cars (Mercedes-Benz S400d 4MATIC, S500 4MATIC) - Repair. Supplemental restraint system (SRS control unit) defect. ■ Defective component (part name): Supplemental restraint system (SRS control unit). ■ Condition and cause of the structure, equipment or performance deemed noncompliant with standards: Some SRS (supplemental restraint system) control units are not securely fastened due to improper installation during manufacturing. Consequently, airbags may fail to deploy properly during a collision, such as an accident, or may deploy suddenly because driving vibrations cause incorrect acceleration readings. In the worst case, occupants may be injured. Published 2022-04-27.
What to do now
(Recall) 外-3398 ■ Corrective measures: On all vehicles, remove the nuts securing the SRS control unit, inspect the installation, and retighten to the specified torque. If the threads are damaged, replace all related parts with new ones.
Units affected
158
Recall number
外-3398
Official notice
2022-04-27
The hazard
The hazard
Supplemental restraint system (SRS control unit) defect. ■ Defective component (part name): Supplemental restraint system (SRS control unit). ■ Condition and cause of the structure, equipment or performance deemed noncompliant with standards: Some SRS (supplemental restraint system) control units are not securely fastened due to improper installation during manufacturing. Consequently, airbags may fail to deploy properly during a collision, such as an accident, or may deploy suddenly because driving vibrations cause incorrect acceleration readings. In the worst case, occupants may be injured.
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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