KIA Complaints

Our 2015 Kia Sedona VIN [XXX] developed CAN Bus fault codes U0001 U0100 U0101 rendering it completely undrivable following an incomplete warranty extension repair under WTY019 by Kia of Des Moines on [XXX] RO# [XXX]. The power sliding doors have been a persistent safety concern. The incomplete warranty extension repair left the sliding door not closing properly creating a safety hazard. The vehicle subsequently developed CAN Bus communication faults making it completely undrivable. After 28 days at Kia of Des Moines from May 4 to June 1 2026 under RO# [XXX] the CAN Bus fault was never diagnosed or addressed. The power sliding door still does not function after two warranty extension repairs. Upon retrieval June 1 2026 the vehicle continues to exhibit active CAN Bus warnings BDS warning lights flickering humming sound and rough driving. We believe the sliding door safety issues and CAN Bus failure are directly connected and represent a safety concern for other 2015-2017 Kia Sedona owners. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Sunroof/Moonroof After a stop light, while driving at less than 30mph, sunroof/moonroof exploded outwards. There were no surrounding cars in front or beside or in other lane direction. It was not hot or cold out. Evening time. No weather issues. If the fabric shade screen had not been closed all the glass would have fallen all over driver. There was no warning of any kind. Glass just exploded outward into a point like a mountain peak. Then glass started falling inwards into car. Took to dealership, had insurance company evaluate for repairs, insurance approved repairs performed by dealership. Dealership service writers said this has happened on other kia's.

The AC compressor failed due to an isolation resistance failure at the high voltage inverter. Freon leaked from the AC system into the battery chiller coolant loop, causing crystallization and blockages in the inverter coolant circuit. This is a battery thermal management system failure. The failure was confirmed and diagnosed by an authorized Kia dealer. Warning lights appeared on the dashboard including an inverter coolant warning. The vehicle was driven in ambient temperatures exceeding 108 degrees Fahrenheit in Arizona with no cabin cooling and a compromised battery thermal management system, creating a safety risk to the driver. The dealer quoted repair including AC compressor replacement, battery chiller replacement, and inverter coolant flush. Kia Consumer Affairs denied warranty coverage under the federal emissions warranty despite the vehicle being within the 8 year/80,000 mile coverage window at approximately 58,309 miles. No written explanation for the denial was provided. This failure appears to be a known pattern on this platform based on owner reports. The battery chiller and inverter coolant system are integral to battery thermal management and should be covered under the federal emissions warranty. The vehicle is currently unsafe to operate in extreme Arizona heat without functioning thermal management.

The vehicle suffered a sudden, severe engine malfunction/misfire while in operation, presenting a serious safety hazard on the road. Following the incident, the vehicle was taken to an authorized dealership service center (Repair Order #XXX), where technicians verbally confirmed that the engine requires a complete replacement due to internal mechanical failure. The catastrophic mechanical failure of the engine directly caused consequential damage to the emissions system, entirely clogging the catalytic converter with unburned fuel/debris. Despite the clear link to the known, systemic defects inherent to the Theta II engine line—which is subject to active federal consent orders, safety recalls, and lifetime warranty extensions—both the dealership and Kia Corporate are refusing to honor the 8-year/80,000-mile Federal Emissions Defect Warranty. The manufacturer is attempting to use the catastrophic failure of their own defective, recalled engine line to evade their legal environmental and safety warranty obligations, leaving the consumer stranded without alternative transportation. This represents a systemic effort by the manufacturer to deflect liability for documented powertrain safety failures onto individual consumers. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Component: ELECTRICAL SYSTEM:12V/LOW VOLTAGE BATTERY, PROPULSION system:Integrated Charging Control Unit (ICCU) Description: This vehicle previously had the mandated safety recall software update (Campaign SC327) applied by an authorized Kia dealership in December 2024 to protect the Integrated Charging Control Unit (ICCU). The corporate recall remedy failed. In January 2026, the vehicle suffered a sudden, catastrophic loss of motive power while driving on a public roadway due to a total ICCU failure, which created an immediate hazard for myself and my young child who was inside the vehicle. When the primary ICCU component failed, it starved the low-voltage system, causing severe deep-discharge damage to the 12V battery. Following the warranty repair of the ICCU in February 2026, the vehicle was returned to me. However, Kia's official corporate diagnostic and repair procedures for this defect are fundamentally flawed and incomplete; they do not mandate a comprehensive load-test or automatic replacement of the 12V battery following an ICCU collapse. Because of this failure in the official repair procedures, the vehicle was returned to service with a critically compromised low-voltage system. This directly resulted in recurring battery warning messages over the subsequent months, culminating on May 29, 2026, in a secondary, total 12V battery failure that completely bricked the vehicle. The failure of the manufacturer's official safety recall remedy and the subsequent inadequacy of their post-failure service protocol left this vehicle in a chronically un-roadworthy and unsafe condition.

The contact owns a 2023 KIA Carnival. The contact received notification of NHTSA Campaign Number: 26V320000 (ENGINE AND ENGINE COOLING) however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure.

Was issued a recall from kia for an oil piston ring that wasn't heat treated properly, kia told me the problem was fixed and the recall shouldn't affect me, my car was in an out of the shop for months after that, they replaced my timing belt and transmission under warranty, said i sould be fine between oil changes my car started knocking, i checked the oil and it was completely dry, no warning lights which is part of the recall fix is early detection warning light. I add oil to my car seems to run better for the day, the next morning on my way to an oil change the engine starts knocking the warning light comes on and then im on the side of the road with all my oil on the ground

While driving the LCD screens would go blank intermittently. Sometimes staying off for 30 secs or more. I could still hear sound and could control volume. This has happened on two different occasions while traveling to work. I have a 35 minute commute on interstate highways.

The vehicle's original engine suffered severe oil consumption and a blown head gasket, which contaminated the exhaust system. The Kia dealership replaced the engine under warranty but refused to replace the damaged catalytic converter claiming it wasn’t a part of the warranty even though it was consequently damaged. The dealership explicitly stated the vehicle should not be started or driven due to the blocked exhaust, but then did repair and release after I pushed for the catalytic converter replacement. They said I would have to follow up with Kia corporate. They released the unsafe vehicle anyway and I have been following up with Kia customer service for 2 months to request a CAT replacement. While driving, the blocked exhaust caused a severe rattling noise, immediate engine overheating, and complete mechanical engine seizure. The engine completely cut power and locked up while in motion, creating an immediate crash hazard on the roadway. The vehicle is now completely inoperable and will not turn over. This is a severe safety defect where a known blocked exhaust system directly caused catastrophic engine failure while operating.

I have replaced the headlights in my 2011 Kia Optima multiple times but no matter what without the brights on, the road is not at all illuminated making it impossible to see at night. When you look at the car head on the lights look as if they would be incredibly bright, but I believe due to faulty reflective lining on the interior of the headlight housing, even though the bulb may shine brightly, it does not get reflected properly onto the surface of the road causing serious safety concerns.