TECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: ANTI-THEFT S/W LOGIC UPGRADE & DECAL INSTALLATION (CS2303) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides the procedure to upgrade the software logic of the Integrated Body Control Unit (IBU) or Body Control Module (BCM) system on certain 2011-2015MY Optima (TF), 2012-2015MY Optima (QF) and 2016-2020MY Optima (JF, JFa) vehicles produced within the dates outlined on page 10, which may not be equipped with an immobilizer. This logic upgrade will add anti-theft ignition start logic to the vehicle's system operation
full bulletin at NHTSA ↗2014 Kia Optima electrical problems
severe Owners of the 2014 Kia Optima have filed 50 NHTSA complaints about the electrical, typically surfacing around 71,500 miles at roughly $850 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See electrical across all vehicles →
Failure mileage
Complaints
50
Recalls
0
Avg fix
$850
| Model year | electrical complaints |
|---|---|
| 2010 Optima | 13 |
| 2011 Optima | 56 |
| 2012 Optima | 95 |
| 2013 Optima | 130 |
| 2014 Optima (this page) | 50 |
| 2015 Optima | 104 |
| 2016 Optima | 78 |
| 2017 Optima | 24 |
| 2018 Optima | 27 |
1crash
7fires
5injuries
When does it fail?
Of the 50 electrical complaints filed for the 2014 Kia Optima, here's the actual mileage breakdown — failures cluster heaviest at 125,000-150,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Owners have filed 50 electrical complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
No new NHTSA electrical complaint has been filed on this vehicle in over 5 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering electrical on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
TECHNICAL SERVICE BULLETIN: PRODUCT IMPROVEMENT CAMPAIGN: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1802Y/Z) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information related to the Technical Service Bulletin previously published PI1802 titled "Knock Sensor Detection System - ECU Logic Improvement"; equipped w/THETA II engine. Specifically, this bulletin provides instructions on which procedures to follow if, after installation of the KSDS, any one of the subject vehicles below returns to the dealer with Diagnostic Trouble Code (DTC) P1326 (Knock Signal R
full bulletin at NHTSA ↗TECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: KIA GENUINE REMOTE START CONTROL MODULE UPGRADE FOR ANTI-THEFT LOGIC COMPATIBILITY (CS2310) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information to update the software logic in the Kia Genuine Remote Start Control Module on certain 2012-2022MY model vehicles listed on page 7. Vehicles equipped with a Kia Genuine Remote Start feature and have had the Anti-Theft software logic (CS230*) applied to the Integrated Body Control Unit (IBU) or Body Control Module (BCM) may experience five (5) inadvertent honks afte
full bulletin at NHTSA ↗CUSTOMER SATISFACTION CAMPAIGN: OWNER RE-NOTIFICATION - This document is the owner re-notification advising that Kia has developed a software upgrade that can be installed on the vehicle to restrict the operation of the vehicle's ignition system should a locked vehicle be the subject of a break-in and theft attempt without the key. This software upgrade will be available to the customer free of charge for eighteen (18) months from the date of the original letter. When the software upgrade is complete, Kia will also provide the customer with window stickers that can be applied to the vehicle to discourage a break-in.
full bulletin at NHTSA ↗CUSTOMER SATISFACTION CAMPAIGN: OWNER RE-NOTIFICATION - This document is the owner re-notification advising that Kia has developed a software upgrade that can be installed on the vehicle to restrict the operation of the vehicle's ignition system should a locked vehicle be the subject of a break-in and theft attempt without the key. This software upgrade will be available to the customer free of charge for eighteen (18) months from the date of the original letter. When the software upgrade is complete, Kia will also provide the customer with window stickers that can be applied to the vehicle to discourage a break-in.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
2014 Kia Optima owners report catastrophic electrical and engine failures across 48 complaints. Engine seizure—stalling suddenly at highway speed, accompanied by knocking, shaking, white smoke, and excessive oil burn—forces engine replacement, with some replacements failing again within months. Hybrid models suffer a distinct pattern: the hybrid battery management system (HEV/BMS) fails without warning, cutting power and disabling brakes and steering mid-drive. Owners describe being stranded in traffic lanes, unable to restart, with brakes locked. The root cause in many hybrid cases traces to an undersized 125 AMP fuse in the safety plug that Kia documented should be upgraded to 150 AMP (Technical Notice PS515, dated 2017), yet this remains a bulletin-only repair—dealerships charge customers, and Kia refuses recall status.
Electrical fires break out in engine compartments with no warning lights; three vehicles were destroyed, one still under warranty. One owner suffered severe electrocution (estimated 100 volts) when touching the hybrid safety plug during a failure and spent hours in the ER with burns. Push-button start fails intermittently, leaving owners stranded. Headlights, brake lights, and daytime running lights burn out repeatedly or malfunction. Throughout, dealers blame owners ("you need to pay"), deny recalls based on VIN lookups, and refuse repairs under warranty. Owners cite multiple engine and hybrid system recalls that they were not notified of and that dealers claim don't cover their specific vehicles.
Same Kia Optima electrical reports on nearby years: 2011 · 2012 · 2013 · 2015 · 2016
Failure modes owners describe
Engine seizure and stalling under load
Engine seizes, stalls, or loses power while driving at highway speeds or during acceleration. Often accompanied by knocking sounds, smoke, white smoke from tailpipe, shaking, and check engine light. Multiple owners report this requires engine replacement; some replacements fail again within months.
When: Various speeds (10–75 mph); one owner at 104,600 miles reported oil burning issue; another at 121,398 miles (hybrid); one at 149,000 miles; another post-engine replacement within 6 months
Symptoms owners cite: Engine stalls or shuts off without warning; Loss of power and acceleration; Knocking or clunking sounds in engine; White or heavy smoke from exhaust; Severe shaking; Check engine light illuminated (often flashing); Steering and brakes become manual/unresponsive during shutdown; Engine starts burning excessive oil (adding 3 times per week); Rolling backwards on hills without driver input
Codes mentioned: Check engine light, Engine knock codes (mentioned in some narratives), Recall #17V224000 referenced (engine seizure)
Repairs/costs cited: Engine replacement; one owner reported $5,800 estimate for hybrid battery and power relay assembly; dealer fees for diagnosis; one owner had engine replaced twice due to recurrence; oil valve replacement mentioned
Recalls/TSBs owners mention: Recall #17V224000 (engine seizure/engine and engine cooling); multiple owners denied recall eligibility based on VIN; some under warranty but dealers refused coverage; owners cite engine recall but dealerships claim no knock code or seizure on OBD = no recall eligibility
Hybrid system failure (check HEV/BMS warning, loss of power)
Hybrid-specific battery management system (BMS) or hybrid electric vehicle (HEV) system fails, triggering warning lights and forcing vehicle shutdown while driving. Loss of power, steering stiffness, and brake function degradation reported. Fuse replacements (125 AMP → 150 AMP) noted as fix; relay assembly and battery failure also reported.
When: Various speeds (10–75 mph); one owner at 82,000 miles; another at 121,398 miles; issues recur weeks to months after repairs
Symptoms owners cite: HEV warning light: 'Check Hybrid System' or 'HEV Malfunction – Stop Vehicle and Turn Off Engine'; BMS (Battery Management System) warning light; Vehicle loses power or enters limp mode; Steering wheel stiffens or becomes manual; Brakes fail or become unresponsive (electric brake system locks); Vehicle shuts down mid-drive and will not accelerate; Braking issues when HEV system stops supplying power; Loss of brakes after 15–30 seconds; Hazard lights dim or blink slower as battery depletes
Codes mentioned: HEV warning light, BMS error light, Battery Management System fault codes
Repairs/costs cited: Hybrid battery and power relay assembly replacement ($5,800 quoted); HV battery fuse replacement from 125 AMP to 150 AMP (part #375F2 4R150 or K 37586 4R002); hybrid coolant and computer software update; hybrid drive belt replacement; technicians describe as 'common' issue; estimated cost over $700 for initial diagnostics and repairs; recall labor denied because outside OEM coverage
Recalls/TSBs owners mention: Technical Operations Notice #PS515 (rev 2, 02/28/2019, dated Aug 2017) documents 125 AMP → 150 AMP fuse upgrade; Technical Service Bulletin issued for software updates; owners report KIA corporate stated 'not recall-worthy'; bulletin memo-only status used to deny coverage; warranty extension of 15 years/150,000 miles mentioned for oil pressure switch (different recall RCONL-19V101-0000) but hybrid fuse issue not formally recalled
Alternator and battery electrical failures
Alternator and battery fail prematurely, leaving owner stranded. Battery replaced three times in some cases; alternator fails at low mileage (~7,800 miles reported). Vehicles unable to restart or maintain charge.
When: One owner at 7,800 miles (1 year old); one at 104,600 miles reported battery issues; one with 3 replacements within warranty period
Symptoms owners cite: Battery dies without warning; Car will not start; Battery charge drains rapidly; Alternator fails
Codes mentioned: Battery warning light, Alternator fault
Repairs/costs cited: Battery replacements (owner replaced 3 times; dealership initial diagnosis blamed battery then fuel injector); one alternator replacement at ~7,800 miles; owner paid out-of-pocket for first two battery replacements before dealership acknowledged issue
Recalls/TSBs owners mention: Dealers blamed battery and charged owners for replacement; no recall issued; owner under warranty but charged for oil change and initial diagnostics
Engine compartment electrical fires
Electrical short circuits ignite fires in engine compartment. Three separate narratives report vehicle fires: one with intense smoke and fire visible, one with fire spreading from under hood, one parked in driveway. Some vehicles condemned as total loss by insurance. No warning signs in some cases.
When: One at ~36,000 miles (still under warranty); one at 147,000 miles; one after ~45 min of driving; one parked in driveway
Symptoms owners cite: Intense smoke from under hood; Fire visible underneath or from engine compartment; No warning signs in some cases; Engine shuts off simultaneously with fire start
Repairs/costs cited: Vehicles condemned as total loss; fire department response required; one incident caused damage to building sprinkler system
Recalls/TSBs owners mention: Manufacturer not contacted in some cases; no recalls issued for electrical fire risk; one owner reported fire as 'electrical short' but VIN not included in any recall
Oil pressure switch leak and fire risk
Oil pressure sensor leaks oil into electrical wiring harness and engine compartment, creating fire hazard. Owner identifies same failure mode as prior recall affecting 2011–2014 models; dealership denies recall eligibility for their specific VIN.
When: Not specified in narrative
Symptoms owners cite: Oil leaking from pressure sensor; Oil accumulating on engine and intake/exhaust pipes; Fire risk from oil on hot engine components
Repairs/costs cited: Oil pressure switch replacement required; part of prior recall and TSB but denied for this owner
Recalls/TSBs owners mention: Recall RCONL-19V101-0000 (2019) covers 2011–2014 models for oil pressure switch replacement if leak found; Technical Service Bulletin MC-10210268-0001 (2022) extended warranty to 15 years/150,000 miles for eligible vehicles; dealership denied claim based on VIN, requiring out-of-warranty owner repair
Push-button start failure (won't crank)
Engine will not start via push-button; lights and radio work but engine cranks only after multiple attempts or workarounds. Issue progresses over time. Owners report widespread internet reports of same failure.
When: After vehicle is parked and cooled; one owner experienced this after battery died; issues progress with time on vehicle
Symptoms owners cite: Push-to-start button unresponsive; Lights and radio work normally; Engine will not turn over initially; Workaround: moving gear shifter from park to drive to park multiple times before button press succeeds; Workaround: waiting extended period; Issue worsens over time (owners report progressing from 'wait it out' to 'gear shifting' stage)
Repairs/costs cited: No repair attempts documented; owners using workarounds instead; dealers claim inability to reproduce issue
Recalls/TSBs owners mention: No recall or TSB mentioned; dealers refuse to attempt repair without reproduction; extended warranty denied for intermittent start issues
Hybrid safety plug fuse failure (electrocution hazard)
Hybrid safety plug fuse fails under load, causing electrocution hazard to driver when touching vehicle during failure. One owner shocked severely while exiting at traffic light; another owner's vehicle failed to power down when HEV light engaged.
When: One at traffic light (lower speeds); not specified for second case
Symptoms owners cite: Electric shock to driver attempting to exit vehicle; Vehicle would not turn off when instructed by HEV warning; Severe electrical shock (estimated 100 volts per ER physician); Muscle weakness, skin peeling, arm tingling hours after exposure
Codes mentioned: HEV warning light, Hybrid system error
Repairs/costs cited: 125 AMP hybrid fuse replaced with 150 AMP (same as HEV issue but with severe shock injury documented)
Recalls/TSBs owners mention: Bulletin memo documented the 125→150 AMP fuse upgrade; KIA corporate told owner 'not recall-worthy' despite electrocution injury and burn marks; no formal safety recall issued
Daytime running lights and headlight/brake light failures
Daytime running lights do not turn on/off automatically; headlights dim and bulbs burn out repeatedly; brake lights burn out frequently. One owner after engine replacement; issues appear to be electrical control or wiring harness related.
When: One owner post-engine replacement; another with brake lights burning out every 3 weeks over time
Symptoms owners cite: Daytime running lights stay on or off regardless of automatic setting; Manual on/off required; Headlight bulbs burn out repeatedly (2nd replacement noted); Headlights dimmer than normal; Brake lights burn out frequently (every 3 weeks reported); Rear tail light assembly electrical fault
Repairs/costs cited: Bulb replacements; one owner spent money 'every month' on headlight bulbs; tail light assembly has internal electrical issue
Recalls/TSBs owners mention: No recalls; owners requesting recall for electrical issues
Temperature gauge malfunction (sporadic needle movement)
Temperature gauge needle moves erratically without corresponding changes in coolant temp. Replaced instrument cluster components multiple times without resolution.
When: At ~49,500 miles
Symptoms owners cite: Temperature gauge moves sporadically without warning; Check engine light illuminates; Issue recurs weeks after repair attempts
Codes mentioned: Check engine light
Repairs/costs cited: Temperature gauge replaced; thermostat replaced; instrument panel replaced; vehicle at dealer 3 weeks; repairs ineffective
Recalls/TSBs owners mention: Recall NHTSA #17V224000 (engine and engine cooling) eventually issued but owner was not notified by dealership
Brake and power loss under hybrid system warning
When hybrid warning engages, vehicle loses brake power and steering response, making vehicle undriveable mid-traffic.
When: Various speeds during city and highway driving
Symptoms owners cite: Loss of power assist for brakes; Steering becomes stiff/manual; Vehicle slows dramatically; Hazard lights dim as battery depletes
Codes mentioned: HEV warning light, BMS error
Repairs/costs cited: Safety plug assembly and fuse replacement; power relay and battery replacement
Recalls/TSBs owners mention: Technical Service Bulletins issued for software/fuse upgrades
Antenna cover detachment and radio failure
Antenna cover comes off vehicle without external impact. Exposes wiring and antenna circuitry, disabling radio function and creating electrical short risk.
When: Not specified
Symptoms owners cite: Antenna cover falls off; Radio displays antenna error; AM radio lost; FM radio barely functional; Wiring and circuitry exposed
Repairs/costs cited: Antenna cover replacement needed
Recalls/TSBs owners mention: Technical Bulletin SA272 exists for 2016 MY Optima for same issue; no mention of recall or coverage for 2014
Turn signal and brake light bulb failures
Turn signal bulbs flash rapidly (indicating burnout); brake lights only function when car headlights are off; passenger brake light requires frequent replacement (7 times since purchase in 2021).
When: Ongoing since purchase Feb 2021 for one owner; another unspecified
Symptoms owners cite: Turn signal flashing very fast; Rear turn signal bulb out; Brake lights only work when headlights off; Brake lights stay on continuously when headlights on; Passenger brake light burns out repeatedly (7 replacements in ~2 years)
Repairs/costs cited: Bulb replacements (owner purchased correct bulbs, issue persisted); electrical fault in tail light assembly
Recalls/TSBs owners mention: No recalls
HECU/ABS module failure post-recall repair
Hybrid electric control unit (HECU) and ABS module replaced under recall SC212 (2021), but HECU fails again in 2023 and requires second replacement. Dealership claims fire risk but no new recall issued.
When: Initial recall repair Sept 2021; ABS warning light appears Oct 2023
Symptoms owners cite: ABS warning light illuminates
Codes mentioned: ABS warning light
Repairs/costs cited: HECU/ABS module and multi-fuse kit replaced under recall SC212; HECU replaced again 2023; second replacement not covered by recall
Recalls/TSBs owners mention: Recall SC212 covered initial replacement; second failure not covered; fire risk cited by dealer but no new recall issued
Traction control light and electrical relay cycling
Traction control light comes on and stays on until vehicle cools; passenger-side parking light comes on when brake is depressed.
When: Ongoing for owner who purchased Feb 2021
Symptoms owners cite: Traction control light illuminated continuously during operation; Light turns off after vehicle cools; Passenger brake light comes on when brake pedal depressed; Passenger brake light burns out frequently
Codes mentioned: Traction control warning light
Repairs/costs cited: No repairs attempted; owner reporting issue
Recalls/TSBs owners mention: No recalls
Paint defect and clear coat peeling
Factory paint and clear coat peel and flake on hood, roof, and other areas. Owner reports this is a known issue affecting multiple Kia Optimas of same year and color (silver).
When: At 187,000 miles; issue worsening over time
Symptoms owners cite: Paint peeling and flaking; Clear coat failure; Affects hood and roof areas
Repairs/costs cited: None; owner requesting goodwill repair/repaint
Recalls/TSBs owners mention: No known goodwill program; owner's communication with KIA 'proved fruitless'
Synthesized from 50 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 1 most recent
My Kia optima killed while driving on the road causing me to scrape the side of my car and it started smoking finding leaking oil as well over a year ago and my car has been sitting at the Kia dealership storage because they told me there wasn't a recall on my vehicle and that I would have to come out of pocket for an engine . I have come out of pocket for transportation for months and have had…
Had electrical trouble with your 2014 Kia Optima?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the electrical problem on the 2014 Kia Optima?
It's a meaningful issue. 50 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $850.
At what mileage does the electrical typically fail?
Across the 25 complaints that reported odometer mileage, most electrical failures cluster between 50,000 and 92,000 miles, with the median around 71,500. A quarter of owners report trouble before 50,000; a quarter make it past 92,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to electrical?
No active recalls currently cover electrical issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2014/Kia/Optima.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.