Recall 24V100 affects 12,191 2021-2023 Mercedes-Benz vehicles for an overheating 48-volt ground cable. Repair is free at any franchised Mercedes-Benz dealer.
Mercedes-Benz is recalling 12,191 2021-2023 vehicles, including AMG GT43, AMG GT53, Cls 450, E 450, AMG E53, and AMG CLS53 models, because the 48-volt ground cable connection in the engine compartment was not tightened properly. The cable can overheat and increase the risk of a fire, and Mercedes-Benz dealers will complete the repair free of charge.
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What's wrong?
The 48V ground cable connection in affected 2021-2023 Mercedes-Benz AMG GT43, AMG GT53, Cls 450, E 450, AMG E53, and AMG CLS53 vehicles sits in the engine compartment. That connection gives the 48V onboard electrical system a secure return path, which helps the system carry current without excess heat at the ground point.
On these vehicles, the ground connection was not tightened to the specified torque during production. Mercedes-Benz found that later assembly steps loosened the connection in some vehicles. A loose ground point adds electrical resistance, and that resistance can make the ground cable overheat.
An owner can see warning messages in the instrument cluster when the 48V system is impaired. One listed message is "48 V Battery See Operator's Manual."
Who's affected?
Covers six model lines across the 2021-2023 model years, all tied to the same wiring harness.
| 2021 Mercedes-Benz AMG GT43 | wiring |
|---|---|
| 2021 Mercedes-Benz AMG GT53 | wiring |
| 2022 Mercedes-Benz Cls 450 | wiring |
| 2022 Mercedes-Benz E 450 | wiring |
| 2022 Mercedes-Benz AMG E53 | wiring |
| 2021 Mercedes-Benz E 450 | wiring |
| 2021 Mercedes-Benz AMG E53 | wiring |
| 2021 Mercedes-Benz Cls 450 | wiring |
| 2021 Mercedes-Benz AMG CLS53 | wiring |
| 2022 Mercedes-Benz AMG GT43 | wiring |
| 2022 Mercedes-Benz AMG GT53 | wiring |
| 2023 Mercedes-Benz AMG GT43 | wiring |
| 2023 Mercedes-Benz E 450 | wiring |
| 2023 Mercedes-Benz Cls 450 | wiring |
| 2023 Mercedes-Benz AMG E53 | wiring |
| 2023 Mercedes-Benz AMG GT53 | wiring |
| Units affected | 12,191 |
| Field incidents | NHTSA has logged no field incidents to date. |
The year and model narrow the scope, but the VIN decides. Check your VIN to confirm whether your specific car is included.
What's the safety risk?
An overheated ground cable increases the risk of a fire. If the instrument cluster shows a 48 V power supply warning, including "48 V Battery See Operator's Manual," schedule service and limit driving until the dealer checks the cable connection. Repair is free at any franchised Mercedes-Benz dealer.
What should I do?
- Check your VIN to confirm your 2021-2023 Mercedes-Benz AMG GT43, AMG GT53, Cls 450, E 450, AMG E53, or AMG CLS53 is included in this recall.
- Contact a franchised Mercedes-Benz dealer to schedule the free 48-volt ground cable inspection and repair that fixes the loose connection that can overheat.
- Reference recall number 24V100 when you call, and bring the Mercedes-Benz notice if you have it.
- Call Mercedes-Benz customer service at 1-800-367-6372 if the dealer cannot confirm repair timing.
What happens at the repair
At the dealer, a Mercedes-Benz technician inspects the 48-volt ground cable connection in the engine compartment and repairs the connection as needed. The recall repair is free, with parts and labor covered. Mercedes-Benz used its standard reimbursement plan for this campaign. If you've already paid for a repair tied to the 48-volt ground cable connection, bring documentation to the service desk or contact MBUSA customer service at 1-800-367-6372 to ask how to submit a claim.
| Reimbursement | Reimbursement available |
|---|
Timeline
| February 9, 2024 | NHTSA published the recall |
|---|---|
| February 16, 2024 | Dealer notification began |
| February 16, 2024 | Dealer notification ended |
| March 22, 2024 | Owner notification mailed |
| March 22, 2024 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| March 22, 2024 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 24V100?
Recall 24V100 covers 12,191 2021-2023 Mercedes-Benz AMG GT43, AMG GT53, Cls 450, E 450, AMG E53, and AMG CLS53 vehicles. An improperly tightened 48-volt ground cable connection in the engine compartment can overheat and increase fire risk. Mercedes-Benz dealers will inspect the connection and repair it for free.
What should I do if my 2021-2023 Mercedes-Benz AMG GT43, AMG GT53, Cls 450, E 450, AMG E53, or AMG CLS53 is on this recall?
Check your VIN to confirm your specific vehicle is included in recall 24V100. If it is, contact a franchised Mercedes-Benz dealer to schedule the 48-volt ground cable inspection and any needed repair. Reference recall number 24V100 when you call.
Is the recall repair free?
Yes. Federal recall law requires manufacturers to repair safety defects at no cost, and Mercedes-Benz says dealers will inspect the 48-volt ground cable connection and repair it as needed free of charge.
What is the safety risk?
The safety risk is fire. Mercedes-Benz reports that the 48-volt ground cable connection in the engine compartment was not tightened properly on affected vehicles. If that connection overheats, it increases the risk of a fire.
What if I bought my Mercedes-Benz used?
The free recall repair still applies. Recall coverage follows the vehicle, not the first owner. Check your VIN to confirm whether your specific Mercedes-Benz is included, then call a franchised Mercedes-Benz dealer and reference recall number 24V100.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/24V100000 |
|---|---|
| Mercedes-Benz customer service | 1-800-367-6372 |
| NHTSA recall # | 24V100 |
| NHTSA recall # (full) | 24V100000 |
Source documents
-
Download Quarterly Report (PDF) - Download Owner Notification Letter (PDF)
- Download Recall Report (PDF)
- Download Owner Notice (PDF)
- Download Recall Investigation Document (PDF) (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 20, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →