A3 sline halogen or xenon headlights

[gunthos]

One of my headlights needs replacing but I've no idea if it's xenon or halogen how can I tell? 

[Audi Owners Club.]

    HALOGEN BULB XENON BULB

[gunthos]

I took it to an audi garage and he said 240 quid to fit a new xenon bulb.  I went halfords and theye are saying I need to replace 2 bulbs. I'm genuinely confused now! Could it be that it's not the bulb but something else causing it to go? I've got an extended warranty but it doesn't cover bulbs 

[mistac]

with an sline, it should be xenons

 

[gunthos]

The light starting working again the other day but is now not working. I took it to my local garage he said I'll need to bring it back to him to have a proper look. Audi want 60 quid just for looking at it. Has someone on here had a similar problem If so what did you do about it? 

[Audi Owners Club.]

I would say have a fiddle around with the wires to see if there is a loose connection but as it is around 25000 volts when the ballast fires up so be very careful.