2004 Kia Optima electrical system problems
45 owner complaints filed with NHTSA name the electrical system on the 2004 Kia Optima — 20% of all complaints for this model year.
What owners report
“On several occasions, when manually unlocking the power door locks, they will immediately lock again and will go into a loop of unlock-relock, whether using the manual door lock or the power lock switch (the relay clicks but nothing happens when using the switch). This happens about 10% of the time.”
filed Aug 16, 2016
“Tl* the contact owns a 2004 kia optima. The contact stated that the vehicle locked and unlocked without using the keys, and the alarm activated on its own. The failure prevented the driver from entering or exiting the vehicle. The vehicle was taken to the dealer where it was diagnosed that the…”
filed Aug 9, 2016
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
TSB - USE OF AFTERMARKET USB CHARGING CABLES IN USB/12V PORTS - This article provides information regarding the use of USB ports and 12V power outlets to connect/charge mobile phones. Customers may experience issues…
PS443 · Service Bulletin/Repair Instructions · issued Apr 4, 2016
Electrical System problems in other Optima years
| Year | Reports | Share |
|---|---|---|
| 2020 Optima | 12 | 9% |
| 2019 Optima | 22 | 11% |
| 2018 Optima | 33 | 14% |
| 2017 Optima | 25 | 10% |
| 2016 Optima | 99 | 13% |
| 2015 Optima | 135 | 13% |
| 2014 Optima | 59 | 10% |
| 2013 Optima | 145 | 11% |
| 2012 Optima | 122 | 13% |
| 2011 Optima | 61 | 10% |
| 2010 Optima | 13 | 17% |
| 2009 Optima | 16 | 14% |
Other reported problem areas on the 2004 Kia Optima
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.