Hey guys, I know this isn't the best place to ask around about cars but I know many folks here are tech guys in more ways than one. Anyway, this is about my 9-year old Mazda 3 sedan. About a year ago (~September 2013) the sunroof had a leak and at the same time, the interior door moldings (the soft part... I think it's made of some sort of synthetic leather/rubber) peeled off and the interior was covered in mold (yes, mold), particularly the door side moldings and the leather seats.Thinking that this was obviously a result of water stuck somewhere on the roof, I had the sunroof fixed and it's no longer leaking. Obviously, I cleaned the seats, the door side moldings, and wherever else mold grew on as well. After a few days I was shocked to see mold all over the place again. Thinking the car needed a good cleaning, I had it thoroughly cleaned inside out (ceiling, doors, seats... even had the carpet removed, washed, dried and reinstalled). So, for a while, I was happy again. I thought I solved the problem. After a few days I began to smell mold again (though there wasn't the heavy, visible mold infestation yet) but thought it was just 'stuck odor' and just hoped for the best. After a month, you guessed it... mold invasion again. Frustrated, I just clean the car when mold comes out.
Now, just the other day I noticed that there's a 'swishing' sound inside the car doors when the car brakes abruptly. I read a little about it and it seems the drain holes underneath the doors may have been clogged, so I groped underneath the doors and found what seemed like drain plugs. I tried to remove the plugs but it seems they wouldn't come off but I could press them down. And wouldn't you know it... water started to drip out of the drain plugs! There was SO MUCH WATER you'd think someone spilled a small can of water beside the car after I was done draining it! I did the same thing for the other doors and water came out from all of them! Now, I know this is a 9-year old car but we've had cars before that stayed with us for a fair bit longer and AFAIK they never had this sort of thing happen. Is this thing common with Mazda vehicles? The fact that water seems to be stuck inside all four doors seem to suggest they either need to be drained periodically (every what, 9 years?) because the window seals that are supposed to prevent water from getting inside the doors when it rains aren't perfect seals and water still tends to get in, OR the water deflectors inside the doors are starting to warp (all four doors at the same time?) and no longer work properly, which causes water to get in. Still, with drain plugs Mazda obviously knows water will inevitably get in. But why do the drain plugs need to be pressed down to let water out? Shouldn't water be able to drain out without doing anything so it doesn't accumulate? For FWIW the water doesn't get to the carpet.
NEC V20 > AMD Am386DX-40 > AMD Am486DX2-66 > Intel Pentium-200 > Cyrix 6x86MX-PR233 > AMD K6-2/450 > AMD Athlon 800 > Intel Pentium 4 2.8C > AMD Athlon 64 X2 4800 > AMD Phenom II X3 720 > AMD FX-8350 > RYZEN?