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Airbags, seat belts and seats · UNITED STATES

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.

Official record checked 2026-10-19 UTC · Filing date 2021-07-12

Start with the specific vehicle

The report lists 15 model-year entries. Read the equipment and production restrictions in the reported issue, then use the official lookup or manufacturer to establish whether this campaign applies to your vehicle.

View the listed model years
  • 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

Check your VIN on NHTSA →

Enter the VIN only on the official service or manufacturer site. This worksheet does not ask for it.

What the official report says

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 NHTSA campaign record

Why the reported issue matters

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

Official NHTSA campaign record

Prepare your observation

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

A reported defect describes the campaign. It does not establish what caused a symptom on your individual vehicle, and absence of a symptom does not establish that an open recall is complete.

The reported manufacturer 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 NHTSA campaign record

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.

This describes the dated source record. Current arrangements for your VIN remain unconfirmed.

Additional 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.

View the source

Choose the next step from the official result

Not checked or unavailable

Keep eligibility unconfirmed. Use the official lookup or contact the manufacturer with 21V527000.

This campaign is open

Confirm current interim instructions, remedy availability and service arrangements. Keep the dated answer.

Not listed as open

Review earlier repair records and lookup limits if needed. A zero-open result does not explain an unresolved symptom.

Work order records recall work

Keep the campaign number, remedy and date together. Ask separately about a symptom that remains after the visit.

Your campaign-specific service questions

Use these questions with the official report. Keep the answers beside the remedy record; “discussed” records a conversation, not a completed repair.

  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.

  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.

  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.

  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.

  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.

  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.

Download the full guide and blank worksheet

Source and lookup coverage

NHTSA 21V527000: official campaign data · Official lookup and coverage limits

The quoted issue, consequence and remedy come from the official record as checked above. This independent guide adds a vehicle-check decision process, service questions and a private worksheet. Confirm current eligibility, remedy availability and interim instructions with the manufacturer.

The official VIN lookup may omit completed recalls, some recent campaigns and recalls outside its coverage. Vehicle notes and answers stay in this browser. A downloaded brief contains your notes; keep it appropriately. Groundwork is independent of NHTSA and the manufacturer.