Lincoln Town Car persistent Check Fuel Cap message despite gas cap being secure on Lincoln Town Car

Some Lincoln Town Car owners report experiencing a persistent "Check Fuel Cap" message despite having a secure gas cap. This issue can arise if the gas cap is not tightened properly, as it needs to click into place to avoid triggering the warning. Additionally, some owners find that driving for about 50 miles after tightening the cap may help reset the system. Others have encountered the message due to a missing or damaged fuel cap, necessitating a replacement. If the problem persists, it may indicate underlying issues such as a stuck purge valve, fuel tank leaks, or problems with the charcoal canister. In such cases, a professional inspection is recommended to accurately diagnose and resolve the issue.