2026 MERCEDES-BENZ AMG C43 4MATIC Complaints

View complaints related to 2026 MERCEDES-BENZ AMG C43 4MATIC. The complaints found here are submitted by actual consumers with first hand experience. There are more than 10 complaints submitted for the 2026 MERCEDES-BENZ AMG C43 4MATIC. You can submit your own complaint to the NHTSA or call the Hotline, Monday-Friday 8am to 8pm at (888) 327-4236, TTY: (800) 424-9153.

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  • 2026 MERCEDES-BENZ AMG C43 4MATIC
    - Rolesville, NC

    CEL followed by no crank / no start. Codes u3017 and u0168. Software flashed and no crank / no start returned. SAM & EIS modules replaced and no crank/no start returned with new codes. U103F00 + P143400 + P051300. Now Mercedes is directing the replacement of the ethernet harness between the SAM and EIS. This intermittent communication or electrical fault can cause the vehicle to unexpectedly lose the ability to start. This creates a safety concern because the vehicle could fail to restart after being stopped in traffic, at an intersection, at a fuel station, or in another location where reliable starting is necessary. The intermittent nature of the failure also makes it difficult to predict when it will occur. The vehicle has sometimes operated normally for extended periods and then unexpectedly failed to start. As of filing this report the issue remains unresolved.

    Source: NHTSA WEB SITE