2024 MERCEDES-BENZ C 300 4MATIC

Dealership: Mercedes-Benz of Santa Fe, 2586 Camino Entrada, Santa Fe, NM 87507 I am filing this complaint regarding multiple unresolved safety defects in my 2024 Mercedes-Benz C300 persisting across numerous repair visits since February 2026. Defect 1 – Recurring Strut Assembly: Following an AC sensor replacement on February 11, 2026, a loud rattling noise emerged from the dashboard/strut area. The vehicle was retained 22 days without resolution. The strut plate was repaired, but the noise recurred. Parts were ordered for the strut assembly, requiring me to drive the defective vehicle for approximately two additional weeks. As of June 8, 2026, the noise remains unresolved. A defective strut assembly affects handling, stability, and steering — creating serious risk at highway speeds. Defect 2 – Safety Systems Disabled: Following the strut plate repair, all driver assistance systems — including collision avoidance and lane keeping — were completely disabled. A warning message confirmed the systems were inoperable. A subsequent software update was required to restore them. Defect 3 – Check Engine Light; Dealer Advised Continued Operation: While driving with the unrepaired strut assembly, the check engine light illuminated. I have photographic evidence. Service Manager Simon explicitly advised me it was safe to continue driving. I contest this. I was not provided a loaner vehicle. Inaccurate Service Records: On June 5, 2026, service notes falsely stated the check engine light was not illuminated. I presented photographic evidence to service representative Robert Rodriguez, who verbally confirmed the photograph. The record was not corrected, potentially obscuring defect patterns from NHTSA review. I respectfully request NHTSA add this complaint to the public database, investigate whether this model has a safety-related defect pattern, and review the dealership's practice of advising consumers to operate vehicles with known structural defects.