Lexus ES350 2016–2018 — technical service bulletin
Bulletin L-TT-0242-18 · NHTSA communication 10141593 · issued May 18, 2018
Technical service bulletin
communication type
Engine and Engine Cooling
component
2016–2018
model years
12
vehicle entries
Official summary
TT: In some cases, customers may report the engine coolant temperature gauge on the combination meter intermittently reading max hot, or "in the red zone," (Fig.1) on a vehicle with no other symptoms of overheating.
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.