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.
Car Problem Reports
Audi S6 Rainwater May Accumulate in Plenum Tray Due to Clogged Drains
Audi S6 Problem
Visitor, 2007 Audi S6, 61,000 mi
big puddle on the driver floor board dripping from under the dash right by the fuse box
Visitor, 2002 Audi S6
Pine needle clog/heavy rain and car wash, brake and engine failure, billowing exhaust steam. Towed to dealer. Cleaned water out of brakes and engine. Saved the engine by getting towed.