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RecallGazette

Vehicle problems, recalls & safety intelligence

Toyota Avalon 2016–2021technical service bulletin

Bulletin T-TT-0552-19 Rev · NHTSA communication 10177779 · issued Jun 23, 2020

Technical service bulletin
communication type
Engine and Engine Cooling
component
2016–2021
model years
32
vehicle entries

Official summary

TT: Repairing a 1234YF HVAC system on a gas powered (non-hybrid) Toyota vehicle may require additional compressor oil to complete the repairs. The various 1234YF compressor oils (ND-12, PS-D1, or VC100YF) are available through the Toyota Approved Dealer Equipment website.

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.