Kia Optima loose clunking steering wheel due to faulty steering coupler causing shimmy and noise when turning on Kia Optima

Some Kia Optima owners report experiencing a loose, clunking steering wheel attributed to a faulty steering coupler, which can lead to shimmy and noise when turning. Symptoms of this issue may include difficulty steering, especially at low speeds, and uneven steering. Additionally, some drivers report feeling a "notchy" or "slipping" condition when turning the steering wheel, potentially caused by a software glitch in the electronic steering system or a faulty power steering motor assembly. It is recommended that owners suspecting these issues have their vehicles inspected by a qualified mechanic promptly to ensure safe driving conditions.