The cruise control is an advanced technology that plays a key role in reducing stress and fatigue of the motorists on long drives. It maintains the speed of the car without directing the motorist’s input. Sometimes it fails, and its failure needs an immediate concern. Several possible causes including- blown fuse, faulty cruise control switch, defective brake pedal switch, sick speed sensor etc, are there due to which your car’s cruise control fails to work properly. If the cruise control is sick, then consult a trusted car mechanic for diagnosis and repair.