Why would cruise control stop working?

Cruise control may stop working due to various reasons, such as a malfunctioning speed sensor, issues with the brake pedal switch, or a blown fuse. Additionally, if the vehicle's onboard computer detects any problems with the engine or transmission, it may disable cruise control as a safety precaution. Other factors, like low brake fluid or a malfunctioning throttle actuator, can also contribute to the system's failure. Regular maintenance and diagnostics can help identify and resolve these issues.