Lexus LS400 fan clutch hub issue with frozen bearing and water in #3 spark plug on Lexus LS400

Some Lexus LS400 owners report experiencing issues with the fan clutch hub, including problems like a frozen bearing that affects fan operation. Additionally, some owners find water in the #3 spark plug, which may indicate a separate issue such as a leak or malfunction in the cooling system. It is crucial for owners to troubleshoot each problem individually to ensure accurate diagnosis and repair, as resolving the fan clutch hub issue may require replacing the bearing or the entire fan clutch assembly. To address water in the #3 spark plug, inspecting components like the water pump, radiator, and hoses for leaks is essential. Regular maintenance and timely repairs are vital for preventing further complications related to both the fan clutch hub and the cooling system in the Lexus LS400.