Problem Reports
Audi A4 Quattro
Report: Rainwater May Accumulate in Plenum Tray Due to Clogged Drains
Audi A4 Quattro Problem
Model Years Affected: 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
Average Mileage: 161,200 mi (77,000 mi - 260,000 mi)
Clogged drains can allow rainwater to accumulate in the plenum tray (at the base of the windshield). The water may leak into the vehicle's interior, brake booster, or electrical components, which can lead to major problems. Our technicians recommend keeping the tray clear of leaves, pine needles, and other debris.
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kfbuild, 2005 Audi A4 Quattro, 77,000 miRookie
just noticed after last big storm that hit northeast
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Visitor, 1996 Audi A4 Quattro, 154,000 mi
Dealt with this issue more times than I care to discuss!The water begins to impact electrical system so stay on top of this! The final solution was to get rid of the rubber drain plugs (one is under battery, other is near brake servo) to allow the water to drain better. Also, blow out the area w/ a compressor every couple of months.
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Visitor, 1999 Audi A4 Quattro, 170,000 mi
Water was draining into the car on the left hand-side and causing major flooding inside to the point where I felt I was the Captain of the Titanic. The cause was the drains in the plenum at the base of the windshield not draining fast enough and then overflowing into the pollen filter housing and traveling through the vents to the inside floor. The solution was to remove the small drain hose that passes through the rubber grommet in the center of the plenum. The little drain hose is still connected at the source near the pollen filter but the rubber grommet was chocking the hose, so by pulling the hose out of the rubber grommet and letting it drain into the pelnum it drains faster and has worked well for the past few months. I might try to further increase the drainage capabilities by removing the rubber grommet completely as suggested in other posts. Good luck to you all.
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Visitor, 1996 Audi A4 Quattro, 145,000 mi
rainwater accumulates in rear right passenger floor. wet vac water out, cannot find the problem.
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Visitor, 1999 Audi A4 Quattro, 260,000 mi
I have not found a solution yet, please help! my windows now do not work, electrical issue and my car is flooded inside
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Visitor, 2004 Audi A4 Quattro
water collecting near drivers left foot corner, plugged up drains, finally fixed 2nd time at dealer.
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