I've got stock xenon headlight, IS250 2007 year, 23000miles, driving with xenon always on.

Today was very rainy weather and after turning on headlights I found that xenon in my right headlight is not glowing, I turned low beam off and on again, and both xenon bulbs lighted up. During next 3 hours of driving I've turned low beam off and on several times again, and there were no problem.

What do you think about it? Does that indicates the problem with the bulb or with the xenon light module at all?

How to check it?

If it is a bulb, does this covered with the warranty?

 

Likely a bulb issue
This topic comes up once a week at least I believe. Do a search.
Warranty covers that. Get an appointment with the dealer.

 

i have the same problem...glad someone brought it up

 

bulb is fried, happened to me and the dealer replaced it with no problems.

 

time to replace under warranty.....

 

should be free under warranty...

 

But how can I proof (or they can check?) if there is really a bulb problem? Cause it happens rarely (f.e. in 100 power ups it would not light up only 3-5 times).

Or they take on trust? Than I could say that both of the lamps are having troubles, so they could change them at once, cause I read somewhere that old xenon bulbs and new bulbs have different colour temperature (old one are bluish). What do u think about it?

 

this is also kinda odd as well...i just replaced my bulbs with some 6000k d4s. today after about a week of using them. the left one doesnt turn on. i turned on and off until like after the 5th try it turned on again. prior to installing, my oem bulbs on either side would light up only one and then i would have have to turn off my lights and on again to make them work..

 

did you get your d4s bulbs from XenonDepot? if you did you mightve gotten the first batch on accident, so shoot a pm to steve if you did get them from him. he helped me out and we realized id received the first batch instead of the second, so he sent out a new pair to me. still waiting to receive em, having to constantly turn my lights on and off while driving

as for the op, just take it in to your dealer and get it covered under warranty. please dont buy a bulb from the dealer, tho, itll cost you an f-sport intake