vantage78

Recently got my passenger side bi-xenon bulb replaced; noticed that it is less white than my original bulb. Service advisor states it is normal. Is it? TIA

raymond g-

with something like HID bulbs, it's normal. but the devil is in the details.
inherent with the design is the fact that they age. if the bulbs are purchased
separately, 1) the age (ergo color balance) of the newer bulb many not match
that of the older bulb, 2) manufacturing variance (lot numbers) may allow for a
slight, yet detectable difference in color temperature.

resolve this by buying in pairs and try to ask for same manuf & lot#. install
together and save the single bulb as back up...like a spare tire with the crappy
rim.

generally speaking, the newer bulb is the whiter one so I'm intrigued. do you
know if the bulb is same manuf as the old and same model?

follow up thought: perhaps your eyes are detecting the aged bulb as being
bluer, ie actually dimmer, colder...but your brain tells you it's whiter/brighter,
a common interpretation.

Artyi

I always buy a couple of bulbs, the last purchase was 7000K xenon headlight bulbs. Looks great and gives a very white light.

Ausmbtech

When only one xenon bulb is changed then they will look different for a few weeks and then the new one will change color slightly as it "burns in".

I think the new MB bulbs have changed manufacturer, but they should still look similar enough in a few weeks.

Guido1986

I bought aftermarket hids for my g wagon and one just burnt out last week and the custom shop installed a new one and its a little bluer than the other one and the guy said it should be the same color in acouple of weeks

MBUSAFLY9

thats weird...