Mercedes-Benz C43 AMG engine management light on with knocking noise, suspected sand in engine block on Mercedes-Benz C43 AMG

Some Mercedes-Benz C43 AMG owners report experiencing an engine management light along with a knocking noise, which may indicate serious issues such as engine misfire or foreign objects like sand in the engine block. These symptoms can lead to severe damage if not addressed promptly, as the knocking noise, particularly after hard acceleration, may suggest worn engine components or potential damage. Additionally, the engine management light could signal a significant engine misfire that allows unburned fuel into the exhaust system. Owners have noted that sand or other debris in the engine block can cause abrasion and increased friction, exacerbating the knocking noise. It is crucial for owners to seek inspection from a qualified mechanic or a Mercedes-Benz specialist to diagnose these issues accurately. Ignoring these warning signs can result in further damage, costly repairs, or even engine failure.