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.
Various Probelms Caused by Clogged Plenum Tray Drain on Audi S8
Average mileage: 81,575 (60,000–95,000)
13 people reported this problem
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Blocked drain! Due to debris from leaves. Such a pain!!!!
Flooding in interior cabin 2 different times due to clogs. Car is garaged at home and carport at work. Mechanic says leaf blowers are big culprit.