A4 Quattro

Water From Clogged Sun Roof Drains May Damage Control Modules on Audi A4 Quattro

Problem Description and Possible Solution

Clogged sunroof drains can allow water to enter the interior and accumulate under the carpet where various control modules are mounted. Over time, the accumulated moisture can damage the control modules.

Problem Data
RepairPal Verified
Average mileage: 85,250 (48,000–113,000)
9 model years affected: 1998, 1999, 2000, 2001, more2002, 2003, 2004, 2006, 2009
13 people reported this problem
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had this issue. Have a problem now with my PDC, which is working intermittently. Also my speakers are cracking. Water ran over the amplifier and the satnav in the rear of the car.