2002 C5 D2R HID Gas Discharge Bulb

[MarkC5]

Last year the OS bulb stopped working and Citroen fitted a new one, part No 66250. Needless to say this was very expensive £78 with no labour charge.

Now the NS bulb when the lights are first switched on glows white and then shortly after glows like a standard fitted car bulb (same when full beam is on). The one Citroen changed still glows white though.

I did get the NS bulb changed but the new one did not glow white so it was removed and the old one put back.

Does anyone know if this means the bulb is on its way out or could it be something else causing it to shine like this.

I've looked on the internet and I can get 2 of these bulbs starting at £20 with 12 months warranty.

Am I right that I would need 4300k ones for them to glow white if it is the bulb?

Any help would be greatly appreciated.

[MJM]

It may not be the bulb, it may be the ballast for that light. If two bulbs are showing the same symptoms it points to a different fault.

[MarkC5]

is the ballast the silver thing the bulb connects to please?
I'm not a car person sorry

[RichardW]

is the ballast the silver thing the bulb connects to please?

Think so, looks like this apparently: ballast There are others on there, that one happened to be at the top!

You can buy one from Citroen (part no 6224F9), for a mere £300

Might be able to swap left to right to see if the fault transfers across?