VOLUNTARY EMISSIONS SERVICE CAMPAIGN: OWNER NOTIFICATION (SC340 FLIGHT 105) - This document is the owner notification advising that Kia is conducting a Voluntary Emissions Service Campaign to improve the emissions software logic in the Electronic Control Module (ECM) for certain 2017-2022 MY Sportage vehicles equipped with 2.4L Gas Direct Injection (GDI) engines to ensure compliance with emissions regulations.
full bulletin at NHTSA ↗2020 Kia Sportage electrical problems
severe 18 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Complaints
18
Recalls
0
Avg fix
$850
3fires
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: VOLUNTARY EMISSIONS SERVICE CAMPAIGN: THETA II 2.4L GDI EMISSION SECM LOGIC IMPROVEMENT (SC340 REV 4) - 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 upgrade the Electronic Control Module ‘ECM’ system software for certain 2016-2022MY vehicles equipped with 2.4L Theta II engines listed in the table below. Kia has become aware that certain 2016-2022MY vehicles equipped with 2.4L Theta II engines may have engine calibrations that were not optimized for emissions standards under certain specific conditions. These calibrations
full bulletin at NHTSA ↗VOLUNTARY EMISSIONS SERVICE CAMPAIGN: DEALER PRINCIPAL MEMO (SC340) - This document is the announcement to the dealer principals advising that Kia is conducting a Voluntary Emissions Service Campaign to improve the emissions software logic in the Electronic Control Module (ECM) to ensure compliance with emissions regulations in certain 2017-2022 MY Sportage vehicles manufactured from December 10, 2015, through December 7, 2021, certain 2016-2020 MY Optima vehicles manufactured from August 28, 2015, through June 23, 2020, and certain 2016-2020 MY Sorento vehicles manufactured from October 27, 2014, through November 4, 2020, equipped with 2.4L Theta GDI engines.
full bulletin at NHTSA ↗VOLUNTARY EMISSIONS SERVICE CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO (SC340) - This document is the announcement to the dealer Parts and Service managers advising that Kia is conducting a Voluntary Emissions Service Campaign to improve the emissions software logic in the Electronic Control Module (ECM) to ensure compliance with emissions regulations in certain 2017-2022 MY Sportage vehicles manufactured from December 10, 2015, through December 7, 2021, certain 2016-2020 MY Optima vehicles manufactured from August 28, 2015, through June 23, 2020, and certain 2016-2020 MY Sorento vehicles manufactured from October 27, 2014, through November 4, 2020, equipped with 2.4L Theta GDI engines.
full bulletin at NHTSA ↗VOLUNTARY EMISSIONS SERVICE CAMPAIGN: SC340_POC: PROOF OF CORRECTION CARD
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Eighteen complaints reveal a pattern of dangerous electrical defects and service failures. The most critical issue is spontaneous fire: owners report vehicles catching fire without warning lights or odor—one while driving with a 5-year-old aboard, another while parked at a campground that destroyed two other campers and an RV. Kia issued a May 2023 interim repair letter for tow hitch harness fires (fuse replacement), but owners say dealers claim ignorance of the notice, refuse to perform the work, or mark recalls complete without touching the vehicle.
Electrical gremlins plague the fleet: complete battery drain, alternator failures, charging system loss during driving, engine stalling mid-trip, and dashboard dropout. Dealerships keep guessing—battery, alternator, connector, engine harness—without fixing the root cause. Owners also report rapid oil burning (some on their third occurrence), fuel tanks leaking into the cabin (out of warranty despite a 2019 recall for the same defect), and limp mode engaging without driver notification.
The vehicle lacks a federally mandated engine immobilizer, making it easy prey for theft. Insurance companies are dropping Kia coverage; values have cratered. One owner lost $12,000 in eight months. When dealers finally respond to safety complaints, they either stonewall or demand $6,000-plus while refusing callbacks. A few owners cite lane-assist misfires, screen blackouts, and false collision warnings—all adding to an electrically fragile vehicle.
Same Kia Sportage electrical reports on nearby years: 2017 · 2018 · 2023
Failure modes owners describe
Tow hitch harness fire hazard
Genuine Kia tow hitch harness accessory poses spontaneous fire risk. Kia issued an interim repair notice (May 2023) instructing dealers to change the fuse associated with trailer wiring harness. Owners report dealers either unaware of the interim fix, claiming vehicle doesn't need repair despite the notice, or marking recalls complete without performing work. One owner's vehicle caught fire while driving after leaving a tire shop, with no warning lights or odors before flames appeared.
When: May 2023 interim notice issued; fire incidents reported October and September timeframes
Symptoms owners cite: Spontaneous vehicle fire; Burning smell when braking; No warning lights before fire; Smoke under hood
Repairs/costs cited: Interim fix involves fuse replacement per May 8, 2023 Kia notice; one fire incident resulted in destroyed vehicle and property damage to RV and nearby campers
Recalls/TSBs owners mention: Kia America issued interim repair letter May 8, 2023 for tow hitch harness equipped vehicles; NHTSA recall tracking shows some vehicles marked complete despite no work performed
Engine immobilizer absence and theft vulnerability
2020 Kia Sportage lacks engine immobilizer required by Federal Motor Vehicle Safety Standard to prevent theft and accidental motion. One owner reports vehicle was stolen despite prior anti-theft logic software update. Multiple owners cite Kia theft issues affecting vehicle value and insurability. Insurance companies reportedly declining to renew Kia policies.
When: Ongoing since manufacture; theft occurred after anti-theft software update
Symptoms owners cite: Vehicle theft despite anti-theft system; Insurance policy cancellations; Rapid vehicle depreciation; Engine running on 3 cylinders post-theft
Repairs/costs cited: No repair available; design deficiency requires recall or retrofit. One owner reports $12,000 value loss in 8 months.
Recalls/TSBs owners mention: None reported; Kia failed to equip vehicle with mandated immobilizer system at time of sale
Fuel tank leakage
2020 model year fuel tank develops leakage from top of tank into cabin. Owner discovered leak at 6 years of ownership after fuel odor and short fill-ups (8-10 gals vs. normal 13-14 gals). Similar defect prompted recall in 2019 (SC172) for earlier year models. Owner believes late 2018 production 2020 models may use same defective parts but escaped recall notice.
When: Leak discovered September 2025; 6 years after lease/purchase
Symptoms owners cite: Strong gasoline smell after filling tank; Fuel pump stops short during fill-ups; Fuel odor in cabin
Repairs/costs cited: Full fuel tank replacement required; cost not stated. Repair performed out of warranty (5-year coverage expired).
Recalls/TSBs owners mention: Recall SC172 in January 2019 for similar fuel tank defect on earlier model years; 2020 model apparently not included despite potentially using same components
Electrical power loss and alternator/connector/harness failures
Multiple owners report complete loss of electrical power, dashboard and power steering intermittent failures, and engine stalling while driving. Dealership diagnostics unclear; repairs attempted included battery replacement, alternator replacement, and connector replacement. Issues recur after repair work, suggesting underlying wiring harness or charging system defect not properly diagnosed.
When: Manifests spontaneously; recurrence noted within days to weeks after repair attempts
Symptoms owners cite: Complete vehicle dead battery; Power steering loss; Dashboard going on and off intermittently; Engine completely dies while driving; Check Engine light, Check Oil light, Check Battery light illuminated
Repairs/costs cited: Attempted repairs: battery replacement, alternator replacement, connector replacement, suspected engine harness issue. Costs not provided by owners.
Engine oil depletion and burning
Owners report rapid oil consumption requiring frequent top-ups despite recent oil changes. One owner experiencing this issue for third time; another post-theft reported engine running on 3 cylinders with rapid oil burn. No diagnostic codes present for some complaints. Suggests internal engine wear or breach allowing oil consumption.
When: Oil change performed; light comes on within 2 weeks
Symptoms owners cite: Oil level low despite recent service; Check Oil light illumination; Rapid oil consumption requiring repeated top-ups; Engine running on 3 cylinders (post-theft incident)
Repairs/costs cited: No repairs reported; owners managing via repeated oil additions
Engine rod failure and starter malfunction
Vehicle stopped unexpectedly at stoplight with Check Engine, Check Oil, and Check Battery lights illuminated. Dealership diagnosis indicated engine rod failure and starter malfunction related to manifold issues. Vehicle required towing and owner left waiting in unsafe conditions in turn lane at night.
When: Sudden failure while vehicle stopped at traffic light; no prior symptoms
Symptoms owners cite: Check Engine light; Check Oil light; Check Battery light; Complete loss of engine function
Repairs/costs cited: Diagnosis indicates rod failure and starter malfunction; repair cost quoted at approximately half of remaining loan balance
Limp mode activation without warning
Vehicle entered limp mode (reduced power mode to prevent fire) without any warning to driver. Second opinion shop confirmed vehicle was protecting itself from fire condition. Kia refused to verify recall fix for HECU (Hydraulic Electronic Control Unit), claiming recall already completed. Kia dealership unresponsive to service requests despite safety risk.
When: Activation occurred during normal driving
Symptoms owners cite: Engine light (alleged to clear itself without driver intervention); Vehicle speed limited; No dash warning of limp mode activation
Repairs/costs cited: Shop identified as HECU-related; Kia dealership requesting over $6000 for repairs and refusing callback to schedule work
Recalls/TSBs owners mention: Recall allegedly completed per Kia; refusing to re-verify or discuss repair despite owner safety concerns
Infotainment system screen failures
Touchscreen display goes completely blank during operation and does not respond until vehicle is restarted. Blind spot warning feature does not work consistently on highway. Collision warning light activates without objects in front of vehicle on backroads and highways.
When: Occurs during driving
Symptoms owners cite: Infotainment screen goes completely blank; Blind spot warning intermittent; False collision warning alerts
Lane assist activation in park
Lane assist system activated while vehicle parked with fuse box issue noted. Owner uncertain of fuse box function and whether fuse should pop out and reset on its own.
When: While vehicle in park
Symptoms owners cite: Lane assist activation when vehicle not in motion
Engine knock, speed limiting, and check engine light
Vehicle developed knocking noise. Diagnostic testing showed no fault codes. Subsequently vehicle would not exceed 65 mph and check engine light blinked continuously.
When: After knocking noise developed
Symptoms owners cite: Engine knocking noise; Speed limited to 65 mph; Blinking check engine light
Animal wire chewing and electrical failure
Animals chewing on vehicle wiring harnesses causing electrical system failures while driving. Occurred multiple times in vehicle less than one year old.
When: Multiple incidents within first year of ownership
Symptoms owners cite: Electrical system failure while driving; Visible wire damage from animal chewing
Odometer fraud at dealer sale
Vehicle purchased from dealer with stated mileage of 70,000 at time of sale. Service records later discovered mileage on Title showed 107,000 with evidence of mileage alteration.
When: Discovered during routine oil change after purchase
Symptoms owners cite: Mileage discrepancy between purchase paperwork and title; Service records showing altered mileage
Synthesized from 18 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 0 most recent
Had electrical trouble with your 2020 Kia Sportage?
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 2020 Kia Sportage?
It's a meaningful issue. 18 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $850.
At what mileage does the electrical typically fail?
Based on the 18 complaints filed, electrical issues most often appear around 40,500 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
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/2020/Kia/Sportage.
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.