condensation behind headlight

i have condensation behind nearside headlight on my TD5 (facelift) any ideas how it got there and how can i fix this problem?
Thanx

Are the headlamps sealed beam or like my 200 are they separate bulbs?

I often find water in mine after steam cleaning under the bonnet after a off road session.

Thinking about it they cannot be sealed beam, if they were and water is inside then the unit would blow as the vacuum is gone I am such a pratt at times!

In that case do you jet wash the engine bay?

There is a rubber around the bulb retainer, mine is there but it often lets some water in.

To fix just take the headlamp bulb out and leave it to dry itself out.

regards

Dave

My 200Tdi had this exact problem. A quick 60 seconds of hair dryer and all was well again.

This was NOT a permanent fix but did last for a while.

In fact that said, they have been clear now for a number of months.

It may be a quick fix but sadly I don't know how to prevent this from happening in the first place.

The fix is easy, just put some silicone around the rubber cover where it meets the headlight, the rubber is tight on the bulbs so should not leak there..............however, you try and replace a bulb a couple of months later and it is a bugger to get the cover off, made worse by the access to this area.

regards

Dave

err what if there's still water/vapour in there when you seal it? would you not be perpetuating the problem?

Well, I would have thought if it's dry in the first place it would be OK, the guy did mention drying it out with a hairdryer.

regards

Dave

ooh you're right. I'm only being pedantic really. Though it's probably the kind of thing I'd do, seal it up half full of water XD