2020 Kia Niro Electrical Problems

This is a supplemental complaint to NHTSA Complaint #11744598 and #11749340. Multiple 2020 Kia Niro Hybrid and Plug‑In Hybrid vehicles are exhibiting identical Electronic Parking Brake (EPB) failures. I have personally encountered other Niro owners reporting the same intermittent EPB/ABS/ESC warnings. A Kia service coordinator confirmed another 2020 Niro currently in their shop with the same issue. In that case, Kia declined warranty coverage because the owner is the second owner, despite the failure involving safety‑critical brake system components. These repeated occurrences indicate a broader pattern of EPB system malfunction across 2020 Niro Hybrid and PHEV models.

NHTSA ID

11767751

Incident

Jan 7, 2026

AC not working, recall SA512 is needed, Kia wont cover the cost of replacing electrical components. Thermal Runaway / Fire Risk: The broken compressor prevents the battery thermal management system from cooling the main high-voltage lithium-ion battery package, creating an overheating hazard during driving or DC fast-charging. Sudden Loss of Power (Motive Power): Battery overheating can trigger a sudden "safe mode" or turtle mode, dropping your speed to zero unexpectedly on the highway.Impaired Driver Visibility: The lack of functional cabin heating prevents windshield defrosting, severely impairing the driver's ability to see the road safely.

NHTSA ID

11755319

Incident

May 23, 2026

10.25" audio head unit. UVO no longer connects so that 911 and roadside assistance can not be reached. This is a known problem with 2019 and early 2020 Kia Niro's part# 96160-Q4210. I spoke to the Kia UVO Call Center and they confirmed that my unit is not communicating and has not since Dec. 2021. As I usually drive just around town I have not used UVO, but now that I'm on the road I need to be able to use this feature. I'm attaching a quote for a replacement unit

NHTSA ID

11734752

Incident

Apr 27, 2026

I own a 2020 Kia Niro PHEV. In October 2024, my dealership performed Technical Service Bulletin SA512 on my vehicle addressing the inverter coolant system. I was not informed at that time that the issue was likely to recur or that periodic maintenance would be required. In March 2026, the inverter coolant warning light returned. I brought the vehicle back to the dealership, where I was told the coolant had crystallized. The dealer confirmed this is a known recurring issue with this vehicle and stated it would need to be flushed approximately every two years since we drive relatively low miles per year (despite driving every day). I was not warned of this at any point. Furthermore, many owners likely drive it short distances every day since it is a plug-in electric vehicle. Kia denied goodwill coverage and I paid out of pocket for the repair. When I contacted Kia Customer Care, representatives gave conflicting information. One confirmed SA512 was performed as a service campaign, another stated it was only a TSB and declined coverage since my car is out of warranty (even though the warranty should still cover the battery and this is an electrical issue). A total case specialist I was assigned to said she would talk to the dealer and call me back but never did. The inverter cooling system is safety-relevant as it prevents the battery from overheating. The problem was confirmed and repaired by the dealership. The component is no longer available for inspection as the repair has been completed. Kia's issuance of SA512 suggests this is a known design issue affecting multiple owners of this model, and they informed the dealership that they could not cover the cost because if they did so, they would have to cover everyone with the same problem (again implying that the issue is quite widespread.)

NHTSA ID

11727309

Incident

Mar 23, 2026

One night the tailgate latch began clicking, locking and unlocking itself and then not latching closed, causing the inside light to remain on and the tailgate open indicator to display on the display panel. Then it just went dead and would not open at all, even if using the specific tailgate open key on the key fob. Then a few weeks later while driving on an empty street very slowly as I was turning a corner, with no warning the back windshield suddenly made a loud noise and then spontaneously shattered. I got out and looked around and there was no one else around or any other cars driving by. I did not hear any impact and also had my driver window down and did not hear any shots, and was not able to recover anything from the inside the back of the vehicle or on the ground that could have hit it. Kia will not cover the cost of the back windshield even though I still have 5 years left on the manufacturer warranty, and purchased the dealership warranty. There is a class-action lawsuit against Kia that is for the Telluride model windshields but according to Google my affect some Niros (Sanchez Vs Kia).

NHTSA ID

11720581

Incident

Feb 24, 2026

There were no symptoms prior to the warning message and warning symbol on the dash. Warning message was "Check EV System". I took my car to the dealer immediately. The dealer has had my car for 3 1/2 months, since Sept 12, 2025. Now the field tech from Kia, on 12/22/25, says that the Electric Power Control Unit (EPCU) needs to be replaced. This could have cause the vehicle to stop in the middle of traffic and cause an accident.

NHTSA ID

11706924

Incident

Sep 12, 2025

What component or system failed or malfunctioned, and is it available for inspection upon request? The component that failed was the Hydraulic Clutch Actuator, which is part of the hybrid transmission system. This component was already replaced in May 2024 under recall SC276, but it failed again. The vehicle is available for inspection upon request. How was your safety or the safety of others put at risk? The failure significantly affects the vehicle’s drivability. The most noticeable issue is a loud, explosive-like sound during operation and a slipping sensation, especially when braking at low speeds on city streets. The vehicle feels unstable and difficult to control during these episodes. This creates a serious safety risk for me and for others on the road. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Has the problem been reproduced or confirmed by a dealer or independent service center? Yes, it was inspected by a Kia dealership authorized by the manufacturer as part of recall SC276 in Colorado. It was later inspected again in February by Kia Serramonte in California for the same issue, but the problem still persists. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No, there are currently no warning lights illuminated. However, the vehicle shows abnormal behavior such as jerking, loss of power, and a noise similar to an explosion. These symptoms first appeared before the recall in 2024, and then reappeared in August 2024, just a few months after the repair until now. Due to financial limitations, I was only able to take the vehicle in for service in November 2024, and finally left it at the dealership in February 2025. The so-called “repair” lasted two months, but the dealership refused to take responsibility. I had to pay $3,188 out of pocket, and even after that, nothing was fixed — the vehicle remains defective.

NHTSA ID

11657864

Incident

Apr 29, 2025

2020 Kia Niro was driving fine until one day while driving down the highway at highway speeds (65-70 mph), the car began to lose power and as we switched lanes to get to the side of the highway, the car began to smoke and caught on fire. Our safety was at risk due to the car catching on fire. The problem is unable to be reproduced as the car is a total loss. Vehicle was inspected by police at the scene. There were no warning lights, and the vehicle had been in working condition prior to the incident. The vehicle had a recall that was fixed at our local Kia dealership as soon as a solution was indicated, and the part was located.

NHTSA ID

11640082

Incident

Jan 18, 2025