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Mercedes-Benz AMG Models: Transmission Wiring Can Short and Burn

NHTSA campaign 24V445000 · Reported 2024-06-14 · Mercedes-Benz USA, LLC

critical How serious is it? About this label

This is serious because a short circuit can cause a fire, and while the notice does not tell owners to stop driving or park outside, the final repair is not yet available, so you should watch for the second letter and report any burning smell or electrical problem right away.

What's wrong, in plain English

A wiring connection for your transmission may not have been put together correctly, either when the car was built or during an earlier recall repair. Water can get into the connector and cause corrosion, which can lead to an electrical short. A short in that area can start a fire. Mercedes has already mailed a warning letter, but the full fix is not ready yet. Cars that had the earlier recall done still need this new repair.

What you should do

1. Enter your VIN at nhtsa.gov/recalls to confirm your car is included.
2. Call MBUSA customer service at 1-877-496-3691 (recall number 2024100002/3) or your dealer to ask about the status of the remedy; the parts were not available at the time of the interim letter.
3. When the second notice arrives, schedule the wiring harness and connector replacement — it is free, even if you already had the earlier recall (22V-533) done.

Affected vehicles (2)

Who to contact

Mercedes-Benz — official Mercedes-Benz recall lookup

Customer service: 1-800-367-6372

Any franchised dealer for the brand can do the repair. Phone numbers are taken from manufacturer sites and recent NHTSA notices; if one has changed, the number in your own recall letter is the one to use.

The bigger picture

Official notice

Component
ELECTRICAL SYSTEM:WIRING
Summary
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2019-2021 CLS 53 4MATIC, 2019-2023 E 53 4MATIC Cabriolet, E 53 4MATIC Coupe, E 53 4MATIC Sedan, 2021-2024 GT 43 4MATIC, and 2019-2025 GT 53 4MATIC vehicles. The transmission wiring harness connection might not have been correctly wired during a prior recall repair, and during production. which can expose the electrical connector to corrosion, and result in an electrical short-circuit.
Safety risk
An electrical short circuit can increase the risk of a fire.
Remedy
Dealers will replace the two-part wiring harness and connector, free of charge. Interim letters, notifying owners of the safety risk, were mailed August 9, 2024. A second notice will be sent once the final remedy is available. Owners may contact MBUSA customer service at 1-877-496-3691. MBUSA's number for this recall is 2024100002/3. This recall supersedes recall 22V-533. Vehicles repaired under the prior recall will still need to have the new remedy performed.

Verify your specific vehicle by VIN at nhtsa.gov. Recall repairs are free of charge by law.