And now I have water in the rear passenger foot well..

[carterjohn]

Was the C5 sent to earth to test us..?

I have now officially had enough and if anyone is interested in a very cheap C5 saloon before I list it on ebay let me know, £4k will drive it away!(it still drives ok)

[el_ringo]

Happens to all the C5 shape cars and lots of sister cars.

Air intake / pollen filter housing
AC drain
Plenum chamber plug

My money is on the first one, easy enough to fix. Get the CCM module out to dry before that dies.

[bam_bam]

My money is on the aircon, pollen filter would be rear near-side.

[Gavinda]

Your not the only one, the heavy rain has left me with a passenger side pool.

Pollen filter seal has perished around Base on mine, surprisingly the drain holes under the expansion tank weren't even blocked. Been parking facing downhill until I can get some sealant laid around the cabin filter box Base,

my ccm is looking like it is dead.
My weekend is revolving around removing the passenger seat and getting the carpet up to dry.

[bam_bam]

Yep, parking on a slope is bad news for these cars.