i only noticed the other day  when we had some rain over knight, one of my headlights where very misty full of condensation they have never done this before so i can only put it down to when the garage changed the xenon bulbs for me, on inspection i found one of the torx screws that hold the headlight cover on the back of the light unit was missing so wasn't fastened tight on one of the corners and i could pull it apart slightly i/e not water tight would this be the cause of the misty headlight do you think?

and dose anyone know the correct size of the torx screw that is missing ?

cheers kev!

27 minutes ago, Kevgem said:

not water tight would this be the cause of the misty headlight do you think?

and dose anyone know the correct size of the torx screw that is missing ?

Yes

No

Odds are it will be N104 648 02 Oval hexagon socket head bolt 4x12mm £0.29 each from dealers

Take one out, measure and you will know.

 

Make sure to run the headlights for a few minutes with the back off to clear out any moisture before sealing the door so to speak.

thanks for that, i was thinking off using an hair dryer to get the moisture out or is that a bad idea ?

cheers kev 

I think you should be ok with a low steady heat not concentrated on a single area for too long, keep it moving and be patient.

cheers buddy!