The screen that shows speed, miles remaining, etc. went black on a long trip. All of the automated cruise control, lane keeping, etc. are also housed in that screen. The blinkers would not work, I had no idea how fast I was going at any time which is unsafe. I could not see how much range is left on the vehicle which I imagine could lead the car just dying while driving or going into the turtle mode with too low of a charge. Also, the adaptive cruise control was not working properly and at one point when a car in front of me moved over out of my lane, the car accelerated hard and brought me up to about what was probably about 90-100mph, not even close to where it was set earlier. 2 hour drive without screen or these safety features and the screen still is not back. I will be taking it into the dealership. This is the second time this screen went out but luckily the first time I was not on a 2 hour work trip/drive and was able to just leave the car in my driveway and use another vehicle.
2024 Kia EV9 acceleration complaints
Page 2 of 2: complaints 11 to 17 of 17, newest first, as owners wrote them.
Vehicle Information: 2024 Kia EV9 Light Long Range Mileage: 850 miles Issue Summary: I am reporting a serious safety concern with my 2024 Kia EV9 Light Long Range. Within the first three weeks of ownership and with less than 900 miles on the odometer, I experienced multiple instances of the vehicle entering "turtle mode" while driving at high speeds on the freeway. This mode significantly reduced the vehicle’s speed without warning, creating a dangerous situation. Incident Details: While driving at 80–85 MPH on a California freeway with my family, my 2024 Kia EV9 LLR suddenly entered "turtle mode" without warning, drastically reducing speed to 30–40 MPH. I had to quickly activate hazard lights and navigate to the shoulder. At the time, the battery level was around 15%, and I initially thought it was a low battery issue. However, the following day, after fully charging the vehicle, the issue recurred with approximately 82% battery remaining. Over the next few days, this happened a total of four times while driving at freeway speeds. On the fourth occurrence, the vehicle shut down completely after coming to a stop and would not respond to acceleration until multiple restart attempts. Current Status: The vehicle has been towed to the dealership by Kia Roadside Assistance. The service team is currently investigating the issue and has opened a case with Kia corporate, but no diagnosis has been provided at this time. Given the severity of this recurring issue, I have also opened a buyback/refund request with Kia corporate. Safety Concerns: This defect presents a severe safety risk, as the sudden loss of speed while driving at high speeds on a freeway could easily result in a rear-end collision or other accidents. The inability to accelerate or maintain control over the vehicle creates an extremely dangerous situation, especially in high-traffic environments. I urge the federal safety agency to investigate this issue to ensure the safety of other Kia EV9 owners.
The main display of the vehicle which shows Speed, Range, Blind Spot Cameras, etc - essentally all the critical vehicle information needed to drive - goes blank randomly. While the vehicle is driveable during this time, the driver does not know their speed, range, any other alerts/warnings that would typically be shown on the guage screen (including seatbelt warnings, mechanical failure warnings etc). During this time the climate screen and infotainment screens, which are seperate, function but the main guage screen does NOT. There is no pattern/predictablity as to when the screen will be unavailable. Further, it does not seem to return until the vehicle is parked and locked for an extended period (eg, several hours).
Dashboard is blank does not show speed limit when driving the car. No way to determine speed while driving. Interior turn signal indicators make no noise or show any indication that the indicators are on.
I went out from my house and got in my vehicle, turned it on, and the instrument cluster screen was not working. I turned off the car and turned it back on and the screen was still not working; I did not have any way to display my speed on the dash. I turned the car off again for a few minutes and then back on and the instrument cluster screen still did not turn on. I had to go pick up my child from school and so I had to use a 3rd party GPS app to monitor speed and the screen never came back on. The next day I checked and the main gauge cluster screen was working again.
When in Highway Drive Assist mode, where the system controls the speed and lane keep and lane change, the system can disengage without any visual or audio warning. This causes dangerous scenarios where the driver believes the car is in control but it is not.
While using adaptive cruise control on the highway, my car almost rear ended the car in front of me when it surged ahead around a slight curve in the road. I was travelling approximately 5mph below the set cruise speed due to the traffic ahead. It appears that my vehicle lost radar sight of the car in front and tried to get back up to the set speed. This has happened on multiple occasions now.
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