Kia K5 2021–2023 — technical service bulletin
Bulletin PS744 · NHTSA communication 10234602 · issued Apr 19, 2023
Technical service bulletin
communication type
Engine and Engine Cooling
component
2021–2023
model years
3
vehicle entries
Official summary
PITSTOP: COOLANT RESERVOIR OVERFLOW PORT - This Pitstop provides information regarding the presence of engine coolant residue found on the coolant reservoir of some 2021-2023MY K5 (DL3a) vehicles equipped with a 1.6L T-GDI engine. The coolant reservoir on these Kia models was designed with a coolant overflow port located in the rear of the reservoir. During normal vehicle operation, coolant level may rise at or above the overflow port which can seep out of the coolant reservoir, therefore causing coolant to flow out and accumulate around the center seam of the reservoir. This may lead technici
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.