Audi A4 2002 — technical service bulletin
Bulletin 0506 · NHTSA communication 10018785 · issued Dec 5, 2005
Technical service bulletin
communication type
Engine and Engine Cooling
component
2002
model years
2
vehicle entries
Official summary
Coolant leaking from rear coolant pipe nipple. *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.