well it was over -30 C last night and my pass side xenon headlight keeps randomly turning off, then when i turn off the headlights and turn them on 2 seconds later, its fine...

happen a couple times during the drive

 

Sounds possible... Cold could definitely affect the gas in the bulbs, but never seen it happen before.

 

or could the ballests or ignitors be affected?

 

I wouldn't think the ballasts or ignitors would be affected by cold.

 

or is it possilbe that certain capasitors in the system are dead until it warms up? (just like a battery)

 

take some pics that will help...

 

No clue. I'm no HID specialists. I'd consult your dealer.

 

Yeah, that shouldn't happen. Talk to the dealer.

 

If there is a problem with the gas in the xenon, then both headlights should be out instead of only the passenger side.

 

Last night in Seattle, we had some snow and it was about 19F degree this morning.
My G37 and GF's ML was parked out side all night, and this morning, ML was warming up for about 15mins before we hit the road...
as soon as we turned right ,, the foglight warning sign came up on the computer screen... (cuz..foglight turns on when we turn right, or left.)
we stop the car on the side of the road and checked.
The bulb and the whole covered glass was blown up..
is it something could happend? this cold weather?

 

holy **** -30 celsius? thats like -22 degrees F wow!

 

what car is this happening on

 

I was thinking the same thing but didn't want to post it. Wasn't that side of your car pretty much punched to hell and back?

 

why u think i asked for pics...lol

 

... B/C you like pics.