Why does my 2006 Buick Lucerne CXL engine oil low turnoff engine warning bell come on?

The "engine oil low" warning bell in your 2006 Buick Lucerne CXL indicates that the engine oil level is below the recommended minimum. This can be caused by low oil levels due to leaks, consumption, or infrequent oil changes. It's important to check the oil level using the dipstick and top it off if necessary. If the warning persists after adding oil, there may be an underlying issue that requires a mechanic's attention.