Audi A8 2013–2017 — technical service bulletin
Bulletin A191784 2045456- · NHTSA communication 10128209 · issued Mar 23, 2017
Technical service bulletin
communication type
Engine and Engine Cooling
component
2013–2017
model years
23
vehicle entries
Official summary
This is an information bulletin regarding procedure for when the technician finds coolant marks during a repair.
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.