Headlights won't work unless brights are on. - 2006 Land Rover Range Rover Sport

SOURCE: headlights wont come on and bright lights won't stay on hold bright light switch and blower works

I had the same problem. The solution is simple; the ignition switch needs to be replaced. This is an easy do-it-yourself project. Here are instructions:
http://forums.vwvortex.com/zerothread?id=2532481
Check for a switch on ebay, they are about $15. After 10 years they wear out.

SOURCE: brake lights wont come on unless my bright headlights are on

By the discription just about the only thing it could be is the multifunction switch, this is the turnsignal, wiper, blinker, bright light, and cruise if it has it switch. And it is not verry simple to replace. The steering colum needs to be taken apart to replace.

SOURCE: 2001 saturn sl1. Headlights stuck on brights and

I suggest testing the relay for your highbeams (under the hood) as it sounds the relay is stuck in the on position. If that doesn't work, you may have to test your high / low beam lever to see if the contacts are touching

SOURCE: 1999 dodge diesel 2500 bright headlights won't

Do you hear switch click when put on high beams? If not could have gotten out of adjustment