2003 Kia Optima electrical system problems
25 owner complaints filed with NHTSA name the electrical system on the 2003 Kia Optima — 18% of all complaints for this model year.
What owners report
“After 60,000 miles, while driving or with the engine running, the engine light came on and stayed on. This has been repaired three times by replacing a main fuse. Each time it has been repaired, the problem has reoccurred. In connection with this problem, the door will lock after the driver exits…”
filed Nov 9, 2015
“Tl* the contact owns a 2003 kia optima. The contact stated that while parked, the door lock failed. The contact attempted to use the fobik and could lock the doors, but they failed to unlock. The contact had to unlock and lock the doors manually. The vehicle was not diagnosed or repaired. The…”
filed Oct 19, 2015
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, 2016Kia: ecm upgrade with tp sensor replacement-mil on with dtc p2135/p0638. Information related to ecm software and tp sensor upgrade on some vehicles with 2.7l engines which may experience a malfunction indicator lamp…
TSB-044 · Service Bulletin/Repair Instructions · issued Nov 1, 2009
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 2003 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.