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Old 01-28-2008, 03:31 PM   #3 (permalink)
cmcreller
BenzWorld Junior Member
 
Date registered: Nov 2007
Vehicle: 2004 ML 500
Location: CT
Posts: 6
Post Xenons on all the time

The Bi-Xenons are basically xenons that are on all the time. A flap/visor comes down during low beam to dim/restrict the bulb. When you turn on the high beams, the flapper retracts and you get full beam = high beam. The other lights (halogen) only come on when there is a problem with the Xenons or when you want to flash and the Xenons aren't warmed up yet. I only know this because I had far too many headlight issues that caused me to know more than I ever wanted.
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