The cruise control is not working in my Accord. The Cruise Main light comes on when I push the Cruise button. The Cruise Control light comes on when I hit the set button. The cruise control does not maintain the speed. I don't believe it is a problem with the brake switch. When I apply brakes, the Cruise Control light goes out. What should I look for next? A: It may be the case that vacuum or electronic actuator (the part that moves the throttle to maintain the speed) isnt working. If it is vacuum powered, there may just be a leak in the line to it, or it may have failed.