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RecallGazette

Vehicle problems, recalls & safety intelligence

Audi A4 2016–2021technical service bulletin

Bulletin A3423652070167_2 · NHTSA communication 10245620 · issued Nov 16, 2023

Technical service bulletin
communication type
Engine and Engine Cooling
component
2016–2021
model years
29
vehicle entries

Official summary

This bulletin provides information for when the cooling oil valve fails basic settings after repair; DTC P1A5B00.

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.