2021 Kia K5 electrical system problems
44 owner complaints filed with NHTSA name the electrical system on the 2021 Kia K5 — 28% of all complaints for this model year.
What owners report
“I am submitting this complaint regarding a leaking evaporator core in my 2021 Kia K5. The evaporator core failed at approximately 59,600 miles, causing the air conditioning system to stop cooling properly. The vehicle was diagnosed by a repair facility, which determined that the evaporator core was…”
filed Jul 13, 2026
“I am writing to formally complain about the ongoing issues with my vehicle, specifically the repeated failure of the air conditioning system and the excessive number of recalls that have caused major inconvenience and lost work time. The air conditioning unit in my vehicle has failed three separate…”
filed May 16, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
VOLUNTARY SERVICE CAMPAIGN & WARRANTY EXTENSION CAMPAIGN: OWNER RENOTIFICATION (SC307/WTY037) - This document is the owner renotification advising that Kia is conducting a Voluntary Service Campaign to relocate and…
SC307_OWNR_301 · Service Campaign · issued Jun 18, 2026VOLUNTARY SERVICE CAMPAINGN: REIMBURSEMENT FORM (SC307 Flight#301) - This document is a Reimbursement Request form that was mailed with the customer letter advising them to submit the form if they had paid for repairs…
SC307_REIMB · Service Campaign · issued Jun 17, 2026TECHNICAL SERVICE BULLETIN: INFOTAINMENT SYSTEM SOFTWARE UPDATE USING UPDATE.KIA.COM - This bulletin provides information and service procedures for updating the infotainment systems on applicable Kia vehicles using the…
TSB_ELE422 · Service Bulletin/Repair Instructions · issued May 28, 2026TECHNICAL SERVICE BULLETIN: INFOTAINMENT SOFTWARE UPDATE PROCEDURE - This bulletin provides information on the process for downloading infotainment software updates and preparing USB for installation on applicable Kia…
TSB_ELE417 · Service Bulletin/Repair Instructions · issued Apr 14, 2026
Electrical System problems in other K5 years
| Year | Reports | Share |
|---|---|---|
| 2025 K5 | 11 | 23% |
| 2024 K5 | 5 | 19% |
| 2023 K5 | 4 | 4% |
| 2022 K5 | 23 | 19% |
Other reported problem areas on the 2021 Kia K5
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.