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Mercedes-Benz Seat Belt Recalls Affect Buckles, Anchors and Child Restraints
Child-restraint locking problems recur in two Mercedes-Benz seat belt notices, although the affected equipment differs. The June 2021 notice concerns rear automatic locking retractors that may deactivate early in specified models, including 2021 G550, AMG G63, E350, and E450 vehicles. The December 2025 notice concerns missing child-seat protection functionality in center rear belts on certain 2025-2026 GLE 350 4MATIC vehicles. Other notices address front belts being incorrectly detected despite correct fastening across specified 2018-2019 models, and a driver-side belt-cover installation problem that can loosen the anchor on certain 2022-2025 C 300 and 2023-2024 AMG C 43 vehicles. Rear child-restraint retention is the clearest repeated issue.
Warning signs to watch for
- December 2025 GLE 350 recall: the center rear seat belt may fail to lock a child restraint properly.
- June 2021 rear seat belt recall: automatic locking retractors may deactivate early, preventing proper child-restraint securement.
Can you keep driving? What the notices say
None of the listed Mercedes-Benz seat belt notices carries a stop-driving or park-outside instruction. The November 2019 front-buckle detection notice does not tell owners to stop driving. The May 2025 C 300 and AMG C 43 belt-cover and anchor notice also does not tell owners to stop driving. Neither the December 2025 GLE 350 center-rear child-restraint belt notice nor the June 2021 rear automatic-locking-retractor notice tells owners to stop driving. Each listed notice lacks an instruction to stop driving.
What the free repair involves
The November 2019 remedy is inspection and replacement of front buckles as necessary. For May 2025, dealers inspect and repair belt covers as necessary. The December 2025 GLE remedy replaces the center rear belt assembly. The June 2021 remedy inspects and replaces rear belt assemblies as necessary. Each notice states that its dealer remedy is free of charge.
Severity at a glance
| Severity | Recalls |
|---|---|
| high | 3 |
| medium | 1 |
Models affected most
Where owners report seat belts problems most
NHTSA owner complaints filed under seat belts for the Mercedes-Benz models and years in this guide. Complaints are unverified reports and are not limited to the recalled defects.
| Vehicle | Seat belts complaints |
|---|---|
| 2025 Mercedes-Benz GLE 350 4MATIC | 4 |
| 2021 Mercedes-Benz AMG E53 | 1 |
Every recall in this group
| Date | Recall | Severity |
|---|---|---|
| Dec 12, 2025 | Mercedes GLE 350 Rear Seat Belt Won't Lock Child Seat | high |
| May 2, 2025 | Mercedes-Benz C 300 seat belt anchor may loosen | high |
| Jun 25, 2021 | Mercedes-Benz rear seat belts may not lock child seats | medium |
| Nov 1, 2019 | Mercedes-Benz seat belts may be read as unbuckled | high |
Common questions
Which GLE seat belt is covered by the December 2025 recall?
The notice identifies the center rear seat belt in certain 2025-2026 GLE 350 4MATIC vehicles. It may lack the child-seat protection function and fail to lock a child restraint properly. Dealers replace the center rear seat belt assembly free of charge.
Why is the C 300 seat belt cover being recalled?
The May 2025 notice says the driver-side cover may be improperly installed on the belt tensioner, allowing the anchor to loosen. It covers certain 2022-2025 C 300 and 2023-2024 AMG C 43 vehicles. Dealers inspect and repair covers as necessary.
Can a correctly fastened front belt still be affected?
The November 2019 notice describes correctly fastened front belts being inaccurately detected, with possible failure of the electric PRE-SAFE function and pretensioners to deploy during a crash. Dealers inspect the front buckles and replace them as necessary, free of charge.
A recall applies only to specific vehicles. Check your 17-character VIN at nhtsa.gov/recalls.