GROUNDWORK — 21V527000: Airbags, seat belts and seats recall for MERCEDES-BENZ AMG GT53 and 12 other models
MERCEDES-BENZ AMG GT53 and 12 other models: check the listed vehicles, the reported issue and the manufacturer remedy for 21V527000. Keep the official status and service answers in one private record.
Campaign: 21V527000
Official record checked: 2026-10-19T20:40:21.993Z
Official campaign: https://api.nhtsa.gov/recalls/campaignNumber?campaignNumber=21V527000
Official VIN lookup: https://www.nhtsa.gov/recalls

LISTED VEHICLES (VIN confirmation required)
2021 MERCEDES-BENZ AMG GT53
2021 MERCEDES-BENZ AMG GT43
2021 MERCEDES-BENZ AMG G63
2021 MERCEDES-BENZ AMG CLS53
2021 MERCEDES-BENZ AMG E53
2020 MERCEDES-BENZ AMG GLC63
2020 MERCEDES-BENZ AMG G63
2020 MERCEDES-BENZ GLC 300
2021 MERCEDES-BENZ E 450
2021 MERCEDES-BENZ CLS 450
2021 MERCEDES-BENZ GLC 300
2020 MERCEDES-BENZ S 560
2020 MERCEDES-BENZ G 550
2020 MERCEDES-BENZ S 450
2021 MERCEDES-BENZ E 350

OFFICIAL REPORTED ISSUE
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021 CLS450, AMG E53, AMG CLS53, E350, E450, AMG GT43, AMG GT53, 2020 S450, S560, G550, AMG GLC63, 2020-2021 GLC300, and AMG G63 vehicles. The side crash sensor connectors may come loose, which could delay the activation of air bags and seatbelts during a side impact crash.

OFFICIAL REPORTED CONSEQUENCE
Air bags and seatbelts that don't function as intended can increase the risk of injury during a crash.

OFFICIAL REPORTED REMEDY
Dealers will inspect and replace as necessary, the side impact crash sensors, free of charge. Owner notification letters were mailed on September 3, 2021. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2021070032/33.

OFFICIAL NOTES
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

OWNER PREPARATION
Use vehicle documents and existing service records. Leave airbag, belt and seat disassembly or deployment testing to the service provider.

REMEDY TIMING IN THE DATED SOURCE
Confirm current remedy arrangements
The source does not explicitly establish current remedy availability. Ask the manufacturer about the applicable remedy, required parts or software, appointment arrangements and any interim instructions.
Current availability for your VIN: unconfirmed.

YOUR SERVICE QUESTIONS
1. Does the manufacturer confirm that campaign 21V527000 applies to this VIN, including the report’s equipment and production restrictions?
A matching model and year is only a starting point. The official lookup or manufacturer must establish the individual vehicle’s status.
Discussion status / answer: __________

2. What remedy, required parts or software, and appointment arrangements are currently available for this VIN, and which interim instructions apply?
The source does not explicitly establish current remedy availability. Ask the manufacturer about the applicable remedy, required parts or software, appointment arrangements and any interim instructions.
Discussion status / answer: __________

3. Which seating position or restraint component is included, and does the manufacturer give any interim occupancy instruction for this VIN?
Compare the answer with the reported component: AIR BAGS:SENSOR:SIDE IMPACT.
Discussion status / answer: __________

4. If an inspection determines which work is needed, what was inspected, what was found, and which corrective work followed?
Ask for the inspection result as well as the final action. A parts list alone may not describe an inspection-based remedy.
Discussion status / answer: __________

5. Which items in the reported replacement remedy for 21V527000 were replaced, and are they identified on the work order?
Keep the replaced items and the campaign number together so that a later visit can distinguish recall work from other repairs.
Discussion status / answer: __________

6. What dated document records the remedy performed under 21V527000, and what should I do if the reported concern remains?
Keep campaign completion and unresolved symptoms as separate questions. A saved worksheet or booked appointment does not establish a repair.
Discussion status / answer: __________


OFFICIAL LOOKUP DECISIONS
Not checked or unavailable: eligibility remains unconfirmed; use the official lookup or manufacturer.
Campaign listed as open: confirm current instructions, availability and remedy arrangements.
Campaign not listed as open: reconcile repair history and lookup coverage with the manufacturer if needed. A zero-open result does not diagnose symptoms.
Work order records completed recall work: keep the exact campaign and dated remedy record; report unresolved symptoms separately.

YOUR RECORD
Check date: __________
Official lookup result: __________
Service arrangement: __________
Existing observation: __________
Questions and work-order notes (no VIN or plate needed): __________

LOOKUP LIMITS
A model/year match does not establish VIN eligibility. The official lookup may omit completed recalls, some recent campaigns or recalls outside its coverage. The listed defect does not prove the cause of a symptom on your vehicle. This guide supports owner preparation and does not provide a repair procedure.