2025 Kia Carnival owner complaints

While driving at highway speeds the exterior and interior lighting/electrial system shut down completely. My headlights shut off, as well as all electrical/lighting inside the vehicle for approximately 1 minute before turning back on as if I had turned the car off and restarted it. I have a low tire pressure warning that comes on when the car is started, and it came on again as if my car had just started, while I was still driving. This poses a safety risk to myself and other drivers depending on the headlights for visibility. The incident did not cause my vehicle to stop driving although I did break due to the sudden loss of all electrical components.

Brand new car and the battery is draining. Leaving the vehicle unable to start.

Battery went dead. Been at dealer 2 weeks. They are waiting to hear from Kia but nothing is being done.

The battery has died twice within 3 months. I couldn’t leave my house to collect my kids. The problem has been commented on by a dealership. No.

The 12-volt battery fully discharges and leaves the vehicle inoperable ONLY when parked in my attached townhouse garage (overnight or 1–3 days). The vehicle starts and runs normally when parked elsewhere (work, airport, etc.) for the same duration. Symptoms: No warning lights prior to failure Dashboard completely dark; no power to doors, lights, or start button Requires jump-start or tow

There seems to be a very common problem of the 2025 Kia Carnival having a battery drain issue, leaving people stranded. I had a dead battery today with only one month and 300 miles of use. Thousands have had the same experience and have discussed this on various forums.

12V Vehicle battery drained. Unable to start Vehicle.

I live in Alabama. Temperature here is 34 degrees so far in the morning. My check engine light is on. I have taken it in and had diagnostics and they can't find a code or code history. My heat and AC do not work properly if the ambient temperature on the cluster doesn't show up or is not correct. 72 degrees when it's not working right will run you out of the car it's so hot. The cluster currently says it's -15 degrees outside and has the snowflake beside it. I am scheduled bc they are booked out at the dealership to have diagnostics run on 11/14. I don't know if it is wiring, ambient temperature sensor, max air sensor, HVAC module (dealership had previously cleared water out of the module and then replaced the module, initially when they couldn't find the problem they disconnected the bat

12V battery drains if the car is left unused for more than 3-4 days. Car needs to be jumped to start it up again. The issue occurred in August and I jumped it first time. It started happening again September and had a service appointment with Kia. They hard reset the software but the issue occured again every time I left the car unused for more than 3-4 days.

I was driving about 6:30ish in the morning and my whole dashboard went black and my head lights turned off couple seconds later it came back on while i am driving. I will be calling the dealership to see what can be checked.

The main screen dashboard suddenly turned off while driving and will not come back. No odometer, turn signal, lane keeping, anything available.

I purchased brand new 2025 Kia Carnival SX less than 2 months ago and it is back at the dealership for service for the second time. First time it had an airbag light stay on the dash and the battery kept reading low voltage and would not allow us to use any features on Kia Access app such as remote start and 360 view. The dealership fixed the airbag light but did not find any electrical issues with battery after testing. The car is driven daily and after sitting for approximately 16 hours the car battery is completely dead. Tried to do a quick jump and would not crank over. I am convinced it has a parasitic draw. It is currently at second service center in hopes of a resolution. So far Kia has not been very supportive.

Purchased brand new, went home to put car seats in and that's when we discovered the rear sliding door did not lock. Took the vehicle in on the 7th, took until the 23rd for it to be "fixed". Picked up the vehicle came home and the car now does not lock again. Kia customer care team has been little to no help and it was suppose to be escalated to the Kia escalation team but we have yet to hear from them.

The component that has failed are both Rear Entertainment System (RES). The vehicle is at the dealership and they are unable to determine the cause hence the vehicle is at the dealership for an additional day. There were no warning lamps, messages or other systems of the problem prior to the failure. The failure happened Oct. 5, 2025. I also called KIA Connect Center on Oct. 9, 2025 and they recommended a soft reset which did not resolve the issue hence finally able to take it to the dealership on Nov. 24, 2025.

I was driving to work and heard a loud noise, then the sound of glass shattering. I pulled over and looked at all my windows and didnt see anything. I continuted driving and I could hear air coming from above, while at a redlight I started opening the sunroof cover and saw glass. I immediately closed it and returned home and got my other vehicle. There was no cars in front of me and nothing above me.

The 2025 Kia Carnivals have a safety systems that prompts the driver to, "Take and coffee break". The system cannot be turned off and is extremely distracting. The system prompts the driver even if the adaptive cruise control is turned off. I called Kia and they told me to take the vehicle to the dealer. The dealer was not able to turn the computer nag off either. The car makes a noise and the prompt flashes at the driver every few miles. This happens when traveling at highway speeds and in traffic. The driver has to look down from the road to see what the noise is and is greeted with the infuriating "Take a coffee break" message. It is extremely distracting and annoying to the point it induces road rage. The NTSB needs to investigate this system and require manufacturers to either allow o

I'm getting an alert in the car app that says low battery and will not perform any lock/unlock/start, etc features. It says the battery level is under 40%.

Vehicle Malfunction Report What component or system failed or malfunctioned, and is it available for inspection upon request? The vehicle's transmission and/or gear shifter system has failed to function as intended. When the gear shifter is set to "Reverse," the transmission has repeatedly shifted into "Drive" or "Neutral" instead. Concurrently, the vehicle's electronic backup camera system and audible sensor beep activate, indicating that the vehicle believes it is in reverse. The van is available for inspection upon request. How was your safety or the safety of others put at risk? My safety and the safety of others were put at risk on multiple occasions due to the vehicle shifting into the wrong gear. This has caused the van to unexpectedly lurch forward when I intended to back up. I hav

In the general design of the Kia Carnival, among other vehicles from the same manufacture (i.e. Kia Sportage) and different manufacturers (i.e. Chevy Bolt), the false taillight cluster has created a safety issue when signaling. With specific mention of the turn signals being in the lower third of the vehicle height, and not in the taillamp cluster, drivers may not ever see the turn signals from the rear of the Kia Carnival, as most drivers are looking at the large taillamp cluster, not the bottom of the rear bumper for turn signals. The poor visibility is further enhanced when combined with the height or size of other vehicles (trucks with lift-kits, large front end vehicles, or large A-pillars) or poor driving from either the vehicle mentioned, or others. Attached photo taken from the Aut

I was stopped in in the left turn lane with my right foot on the brake pedal. Suddenly the car began to rapidly move forward. I jammed my right foot down and stopped the car, avoiding an accident.