Hyundai Elantra 2011–2016 — technical service bulletin
Bulletin 21-EM-001H-1 · NHTSA communication 10191791 · issued Apr 2, 2021
Technical service bulletin
communication type
Engine and Engine Cooling
component
2011–2016
model years
7
vehicle entries
Official summary
This bulletin describes the procedure to inspect an engine exhibiting noise between the cylinder block and piston due to possible scuffing on one or more cylinder walls. Follow the procedure outlined in this bulletin to inspect and replace the short engine assembly if scuffing is observed.
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.