Audi A4 2013 — technical service bulletin
Bulletin 01137420332112 · NHTSA communication 10222003 · issued Mar 12, 2013
Technical service bulletin
communication type
Fuel System, Gasoline
component
2013
model years
6
vehicle entries
Official summary
Under extreme driving conditions (e.g. long idle periods or extended stop and go traffic), high temperatures build up in the rail system and can lead to steam bubbles in the fuel.
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.