Hyundai Elantra 2021–2022 — technical service bulletin
Bulletin 22-01-032H · NHTSA communication 10210210 · issued Mar 31, 2022
Technical service bulletin
communication type
Engine and Engine Cooling
component
2021–2022
model years
2
vehicle entries
Official summary
On certain 2021 Elantra and 2022 Kona vehicles equipped with 2.0L engine, a coolant leak at the Water Temperature Sensor (WTS) may be observed due to machining burrs at the mounting port of the cylinder head, resulting in improper coolant sealing.
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.