2024 Kia EV9 Driver Assist & ADAS Problems

Certain ADAS features have disengaged at least six times in the last year. While traveling at greater than 55 mph vehicle disengages cruise control and reports numerous warning indicators on dashboard including ADAS forward features such as collision warning and automatic braking indicators. I also noted lane management/steering also seemed to disengage when this has occurred during highway curve management. It is difficult to evaluate the full range of loss as the dashboard warnings are numerous and change over the next few minutes. It is also unsafe to secure good photographic evidence when traveling alone, though with assistance some imagery was recently captured. The sudden loss of speed and directional control assistance in multi-lane urban traffic was alarming but managed OK by alert driving. The manufacturer's dealer reported they could do nothing after one of the first occurrences. They said there were not 'codes' registered and not reports on file. The loss of systems usually cleared up within a few miles for the first instances. The most recent case persisted for several hours and several vehicle off/restart cycles. During this time the dashboard indicators suggested some failures resolved but some remained. This last case cleared over-night upon morning restart. A failure/warning was noted in the Kia Connect online app while the car still reported a problem. There were no prior indications before the sudden systems failure. All of these cases initially occurred on a section of road within about 1/2 mile of the same place. It involves a significant curve on an urban interstate interchanged. Sometimes the failures occur just before, or during, and at the end of the curve.

Over 10 times I've had errors come up on dashboard about sensor systems that are not working. Cat has been taken in 5 times for this with no resolution. I can provide numerous dashboard pictures going back since I purchased the vehicle

When the vehicle is in adaptive cruise mode and tracking a lane with Lane Keeping Assistance, if the lines on the road widen beyond a certain point (perhaps 3-5ft wider than a normal lane), the vehicle will suddenly stop maintaining the lane with no audio warning or significant visual indicator. As the driver should always be paying attention, it is the lack of an audio warning that is the major concern. On a straight road, the vehicle will slowly begin to drift out of the lane. However, when this happens on a curve, the vehicle will suddenly stop steering around the corner, and throw the vehicle out of the lane in a dangerous way. This happens all the time when the lane widens, which I often experience on newer freeways with wider lanes. If a fix can't be provided for the system shutting down, it at least needs an audio warning indicator so the driver is alerted to what is happening and can safely take control.

The main display panel that shows the speed, turn signal info, blind spot monitoring, and many other things just intermittently dies. According to many posts within online forums, the only known fix is to turn off the vehicle, wait at least 30 minutes and turn the car back on. There does not seem to be a reset option like there is for the radio/map/settings panel. It also does not allow you to see how much fuel (or charge in this case) is left in the vehicle.

The contact owns a 2014 Kia EV9. The contact stated while driving at various speeds, the Lane Keep Assist failed, and the vehicle started pulling to the outside of the intended lane. There were no warning lights illuminated. The dealer was not made aware of the failure. The vehicle was not repaired. The manufacturer was contacted; however, no assistance was provided. The failure mileage was unknown.