Ford Taurus cruise control not engaging and horn malfunction on Ford Taurus

Some Ford Taurus owners report experiencing issues with cruise control not engaging and horn malfunctions. Common causes for these problems include failed control modules, sensor or switch issues, throttle actuation problems, and clockspring malfunctions. Troubleshooting steps often involve checking fuses, verifying the horn relay, ensuring the cruise control servo functions properly, and inspecting the cruise control deactivation switch and clock spring. Potential solutions suggested by owners include resetting the brake pedal switch, replacing the horn/relay fuse, and cleaning electrical terminals on the cruise control module. Additionally, it is noted that the horn and cruise control share a common fuse located under the hood, and disconnecting the battery may help resolve some issues. In some cases, owners have found that the cruise control problem may resolve itself sporadically after driving.