E46 climate control drain tubes

[tgr]

I have been into this in some detail with real oem but cannot get a definitive answer: where are the drain tubes located, so that I can ensure they are clear? My system smells a bit musty and I have blown hot air through it (which I think alleviated the problem). But a lingering smell remains.

Are the drain holes underneath the charcoal filter beneath the windscreen? Or are they better to get at from underneath?

[Mr-B]

Cannot vouch for any of the info here as I haven't tried it, but it may help?
http://www.bimmerfest.com/forums/showthread.php?p=...

[tgr]

some good leads there, thanks a lot! Looks like I'll be getting under the car somehow...