Focus wet footwell! - y2k+4
Hey, got up this morning to find the passenger footwell actually soaking with wetness. What is the likely cause? There's no sunroof, so it's not a issue I'm familiar with (previous ZX had a leaky sunroof)...
Focus wet footwell! - Carse
Has the vehicle been recently serviced? As I believe and badly fitted pollen filter can cause this or much worse you heater matrix may have had it.

Carse
Focus wet footwell! - caesar
Pollen filter cover/grill is 90% cause of a wet
passenger footwell.
If its been replaced or old there normally only stuck down with £1 worth of useless sticky back foam.
When i replaced mine i tried the foam but it let the water in after a couple of months so i stuck the edge of the grill on with sillicone.
Hopefully this will be your problem as its cheap to cure.
Focus wet footwell! - TDCi Al
It's the grill at the bottom of the windscreen on the passenger side. The garage take it off to get at the pollen filter and do not re-seal properly. Ford should give you a complete new cover (mine was nice a shiney compared to the driver's side) but no charge for it to ensure a good seal.

Focus wet footwell! - Adam {P}
Yep. I've had this problem - big time!

I got a windscreen place to reseal the windscreen along the edge of the grille that Al's on about and that worked fine.
Focus wet footwell! - AndyT
The 'grill' at the bottom left of the windscreen on my '02 Focus is the modded type, this has a u-shape moulding attatched to the underside which catches any water which runs between the screen and the cover, and drains it off to one side.

The actual pollen filter sited below this cover has no protection, so if the cover is of an older type, it really needs to be sealed to the windscreen to prevent water getting through.
Focus wet footwell! - Roly93
As several people have said, this is a common problem after the pollen filter has been replaced. Without fitting the modified cover which I believe does exist, what you need to do is get a sealing kit from the Ford dealer. This consists of a new bitumin strip and the little plastic clips/studs which often break when the cover is removed. Provided you clean all of the old sealant off the screen and the cover and apply the new seal correctly, you shouldn't have any further problems. Considering that the Focus is an otherwise well designed car, their designers must have done this assembly on a Friday aftrenoon after a heavy lunchtime session !
Focus wet footwell! - spikeyhead {p}
I couldn't agree more.

They tend to leak more when parked with the nearside facing uphill, so turning the car round might be a temperary avoidance measure.
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Focus wet footwell! - mss1tw
Exactly the same on my car, and parking downhill does seem to help as said above.

Focus wet footwell! - Pete Mansell
When I changed the filter on my Focus, I re-sealed it with silicone (bathroom type) sealant. No problems, and to my surprise the cover came off easily at next filter change time. So why bother with buying new seals, which seem a bit iffy anyway?

Pete Mansell