Condensation on Boxster windscreen typical?

[RichB]

Got into my 3 y old 987 Boxster to drive home this evening and the screen was saturated inside. Is this common? first vey cold evening true and there was frost on the outside of the hood but I was surprised how damp the screen was inside. Given I run the a/c even with the heater on which is meant to dry the air I wondered if some thing is wrong. Thoughts? Is tis common?

[majordad]

Time of year I think, happens to my Cayenne as well, and my other car too.

[911 (997)]

If it is really bad you might want to check that the carpeted areas at the bottom of your door(s) are not getting wet when it rains. This can be a source of considerable moisture which can exaggerate condensation issues at this time of year. Just run your hand along the bottom of the door next time your car has been in the rain a bit. If it is damp it means that the inside door lining has deteriorated, which is a known issue and Porsche fix them under warranty. It is possible to fix them yourself if you are so minded and have a couple of hours to spare. But this is if it is really bad since an element of condensation will happen naturally.

[mollytherocker]

Great tip!

[matjk]

Also check the carpet behind the seats at the engine bulk head, the roof does not seal properly on a boxster, water runs down the hood and sits on a tray under the hood, the tray has drain holes and if they get blocked the tray fills up and water runs over and into the car. Simply put the roof half down and look under the flap that lifts up that covers the roof when its down and you can see the tray and drain holes.

[Rockster]

RichB said:

Got into my 3 y old 987 Boxster to drive home this evening and the screen was saturated inside. Is this common? first vey cold evening true and there was frost on the outside of the hood but I was surprised how damp the screen was inside. Given I run the a/c even with the heater on which is meant to dry the air I wondered if some thing is wrong. Thoughts? Is tis common?

Not normal is my experience.

Along with the other suggestions check the water drains/basins under the front lid are clear. You'll have to remove the battery cover then the covers on either side.

Also, put the top in the service position and check the water drains/basins on either side of the top are clear.

[cslwannabe]

I would suggest it is fairly normal in the UK at this time of year - people drive around with air con set to 22 degrees or so (maybe more), which is reasonably warm, and then after they leave the car this relatively warm air is gradually cooled down by the significantly lower outside temperature and a layer of moisture on the windscreen results.

[RichB]

Thanks all, I'll check all the drains tomorrow although I did it in the spring so I don't know how quickly they block.

[Trev450]

Probably just the time of year and current weather. My Cayman is condensating much more than usual at the moment and its bone dry inside.

[steveo3002]

couple of things that help if theres no leaks, open it up on a nice dry day when you can , and after driving it turn the heat off and crack a window for the last couple of miles so its parked up with the inside cool

[MadMark911]

Yup my Boxster used to do it in this weather!

[Sifly]

Heavy condensation on the inside of the windows during cold weather usually means there's a high moisture content inside the vehicle often due to a leak from a bad seal etc. check under over mats to see if carpets are damp, or inside door bottoms etc.
Obviously many convertibles suffer from such issues. If the inside of the windows start to steam up once on the move with the heating on, that's another giveaway sign.

[Glassman]

There's a thread running on 911UK about this very subject. Many are pointing to the air-con here.

[steve singh]

RichB said:

Got into my 3 y old 987 Boxster to drive home this evening and the screen was saturated inside. Is this common? first vey cold evening true and there was frost on the outside of the hood but I was surprised how damp the screen was inside. Given I run the a/c even with the heater on which is meant to dry the air I wondered if some thing is wrong. Thoughts? Is tis common?

Were there feet marks on the windscreen?

[Ice White Socks]

[quote=911 (997)]If it is really bad you might want to check that the carpeted areas at the bottom of your door(s) are not getting wet when it rains. This can be a source of considerable moisture which can exaggerate condensation issues at this time of year. Just run your hand along the bottom of the door next time your car has been in the rain a bit. If it is damp it means that the inside door lining has deteriorated, which is a known issue and Porsche fix them under warranty. It is possible to fix them yourself if you are so minded and have a couple of hours to spare. But this is if it is really bad since an element of condensation will happen naturally.
[/quote]

Good advice- thats the the first thing I would check (spent last Saturday fixing the passenger door seal after having just the same problem)

[Glassman]

steve singh said:

Were there feet marks on the windscreen?

Heavy breathing?