MyKey™ is an innovative system that can help your young son or daughter drive more responsibly – and safely. Important safety features stay activated, such as the Beltminder™ warning chime, until the safety belts are buckled. The audio system sound volume also remains muted. MyKey can be set to place limits on speed (to 80 miles per hour) and audio volume (to 45 percent of maximum). The low fuel light comes on sooner (75 miles to empty instead of 50). The few minutes it takes to program a MyKey ignition key through the vehicle's message center will bring you hours of additional peace of mind.