Audi A4 2001–2005 — technical service bulletin
Bulletin 190504 · NHTSA communication 10015583 · issued May 16, 2005
Technical service bulletin
communication type
Engine and Engine Cooling
component
2001–2005
model years
10
vehicle entries
Official summary
The coolant reservoir is diagnosed to be leaking and intended to be replaced. *tt
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.