Porsche Cayenne 2017–2021 — technical service bulletin
Bulletin No. 2307 · NHTSA communication 10235367 · issued Apr 1, 2023
Technical service bulletin
communication type
Engine and Engine Cooling
component
2017–2021
model years
14
vehicle entries
Official summary
Instructions on advanced technical information for the display of "coolant temperature too high" in Group V6 and V8 Engines
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.