Volkswagen Passat 2001–2005 — technical service bulletin
Bulletin P 9-66C8 · NHTSA communication 10025923 · issued Jun 1, 2008
Technical service bulletin
communication type
Structure
component
2001–2005
model years
5
vehicle entries
Official summary
Volkswagen: 2001-2005 models: service air plenum area to improve drainage and install improved pollen filter seal. Water could leak into the passenger compartment. 2002 models could have leaks into the brake booster. *pe
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.