I just got done upgrading my 2012 LR4 to xenon headlights. I was reading the workshop manual, and it talked about how the xenon headlights were bi-xenon headlights. That implies that the xenon bulbs put out more light (some solenoid inside the bulb) when you switch to high beams. From the manual: NOTE: If the lighting control switch is in the OFF position, the xenon lamps do not operate when the high beam 'flash' function is operated. If the lighting switch is in the headlamps position or AUTO position with the low beam lamps active, the xenon low beam will remain on when the high beam 'flash' function is operated. Are the xenon headlights on an LR4 actually bi-xenon, or will the halogen high beams always come on when you turn on high beams?