Hyundai Elantra 2017 — technical service bulletin
Bulletin 5NP-A2Y3D-05 · NHTSA communication 10138234 · issued Apr 2, 2018
Technical service bulletin
communication type
Electrical System
component
2017
model years
1
vehicle entries
Official summary
This bulletin provides a procedure for replacing the thermostat on certain 2017 Elantra vehicles. The thermostat may not function properly and may result in Diagnostic Trouble Code P0128. Replacement of thermostat is required even without a P0128 code.
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.