Lexus RX 300 cruise control quit working?

If the cruise control on your Lexus RX 300 has stopped working, it could be due to several issues. Common causes include a blown fuse, a malfunctioning cruise control switch, or problems with the brake pedal sensor, which can disable the system. Checking the vehicle's fuse box for any blown fuses related to the cruise control system is a good first step. If the issue persists, it may be best to consult a mechanic for further diagnosis.