2025 KIA CARNIVAL Electrical System Problems

12v Battery died 2 times first on 12/26 then on 1/25. We had to call in roadside assistance for jump start. This was reported to Kia Dublin and Kia Manteca in California. Kia Dublin ran the diagnostics and couldnt find anything. Kia Manteca later found the battery logs showing issues. But said it could have been related to the HVAC recall which is now fixed. But the problem re-occured. This is a brand new vehicle less than 1 year old, still unders warranty. Have reported this to Kia customer care as well. Kia Customer Care Case#XXX So far, we have had the following issues: 1. The front passenger seat recliner stopped working. Kia Manteca replaced the seat frame under warranty. 2. Both rear entertainment screens stopped working. Kia Dublin has ordered them under warranty. Replacement planned for 1/26. 3. Battery died 2 times, luckily car was in the garage we...

My 2025 Kia Carnival Hybrid produces externally audible audio while the vehicle is locked, with all doors and windows fully closed. Private phone calls, navigation instructions, and other in-vehicle audio can be clearly heard from outside the vehicle indefinitely, even after locking the car. This behavior occurs without warning to the driver and cannot be disabled or controlled through any user setting. The dealership and manufacturer have confirmed this behavior is “by design” and have declined to correct it. This presents a safety and security concern, as it exposes private communications, signals whether a vehicle is occupied, and may attract unwanted attention or increase the risk of harassment, stalking, or theft—especially in parking garages, residential areas, or public locations. The vehicle appears secure to the driver (locked, windows closed), yet continues to broadcast audio externally, which is unexpected and undocumented behavior. I believe this constitutes an unintended external output of...

What component or system failed or malfunctioned, and is it available for inspection upon request? While driving all of the lights in the car went off. Everything internal, and atleast the head lights externally. This lasted for a second or 2 before everything came back on. The screen said something about loss of something, but I don't remember what exactly. This has only happened once. Yes it can be inspected How was your safety or the safety of others put at risk? Atleast the head lights went off while driving at night. Possibly my break lights as well. Has the problem been reproduced or confirmed by a dealer or independent service center? no Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? no Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first...

I am submitting a safety-related complaint regarding my 2025 Kia Carnival with approximately 4,000 miles. The vehicle experienced an electronic system failure that required diagnosis by an authorized Kia dealership. The dealer has informed me that the issue is due to a failed Body Domain Controller (BDC), which must be replaced. The vehicle is currently not safe or suitable for normal operation and will remain at the dealership for at up to one week, with the possibility of a longer delay depending on parts availability. The vehicle has very low mileage and has been maintained normally. A failure of a central body control module at under 4,000 miles raises serious concerns regarding vehicle reliability, quality, and potential safety implications, as the Body Domain Controller manages multiple critical vehicle systems. Additionally, during this repair period, the dealership has provided only a Kia K5 sedan as a loaner vehicle. This is not...

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

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 battery and reconnected to...

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.

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 have nearly collided with other parked vehicles and my garage door between 10 to 20 times. Has the problem been reproduced...

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

On or around [XXX] the rear occupant sensor warning light came on. We scheduled a service appointment with the dealership for 7/15/25 at 7:00 a.m.. We were informed later that morning that it was a defective module that could affect the air bags and it wasn’t safe to drive the car. It is 7/26/25 and we still wait on the part. Yesterday we were told by the service department that they didn’t know when the part would be available, it is back ordered due to the number of vehicles with the same issue. While our car waits at the dealership we got an email from Kia Connect giving us a 12 volt battery discharge warning. We don’t know if this is related or not but when looking online we found several people with that same problem as well. Our mechanic agreed that the 12 volt battery should not be discharging...

This is the second time, while I was driving that the car would not want to pick up speed and shuddered. The engine light came on again. And stayed on this time. I brought it back to the Kia dealer. They ran a diagnostic. They first wanted me to pay the cost. It is under the warranty. Now I am waiting for the parts and was told to not drive my car until it gets repaired. No loaner was offered. They said to drive it home and they will contact me.

The car doesn't start after overnight, or after a period of no usage for a certain time. Push button doesn't start the engine, it takes 25-30 attempts to get it started. It keeps happening almost every day.

While I was driving on a highway, my vehicles "check engine" and "batter" lights were illuminated and a warning came across the car screen that said something along the lines of "Battery Management System Failure" and then "Powertrain failure". The car was not able to accelerate by pressing the gas pedal, and the heating/cooling features within the car stopped working. I quickly changed lanes to get to the far left shoulder of the highway, putting other cars at risk of my car that was slowing down to 50mph as I was getting over. When I would press on the gas pedal, nothing would happen. The car did remain on. When the dealership received the car the next morning they conducted what they referred to as a recall, but KIA refers to it as a "Service Action" - SA617 MCU DTC Logic Improvement. This requires a simply software update, which the...

Bought the car after 2 months of owning it and not driving for 3 days car wouldn’t start had to charge the battery Happened again over my kids winter break didn’t drive for 2 weeks and wounds start when I went out in January 7th to star it had to charge the battery

The vehicle's battery drain after turning off and cannot restart. It can cause to stall the vehicle on road. Kia Connect sent "Our backend team has determined that a TSB ELE341 (Network Reset) is needed to refresh your vehicle’s connection to the Kia Connect servers. To resolve this, please contact your preferred official Kia dealership to schedule an appointment and mention TSB ELE341 for the network reset." Took the vehicle to a Kia dealer's service; they reset, but problem remains. I just received from Kia"Dear [XXX] , This is nothing that we can troubleshoot. You will have to wait for your appointment to have them handle the issue. Thank you Sincerely, Kia America INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

One night while driving all lights went out even panel radio too and in a couple of seconds came back to normal..a few weeks after that while driving a loud warning sound came on and the info panel turned Red when I felt a breeze my door was opened by inself

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.

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'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%.

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.

Started about a couple weeks ago. Just bought my car and my battery drained 3 nights in a row. Had to jump start it Found out some fan run, when car is off, hours after it has been parked.

The battery on this car drains despite standard operation. Battery replacements do not work and it must be jumped. Some programming aspect clearly is wrong and drains the battery when not in use. It needs to be fixed asap for safety and to avoid stranding.

After day or two purchasing the car, I started getting notifications at the car battery was low eventually after two weeks it completely died, and I was locked out with no way to enter the car because they no longer provide a manual key in the key fob. Multiple chargers and charging with another car for hours with no luck to get the car back up once I finally did get the car open. Seems like the dealerships themselves are aware of this issue and they have no way of fixing it. They keep playing games and making circles about how they’re escalating they’re doing they’re doing that and they have not provided me with a loaner.

My bran new 2025 with 3,000 miles has a completely dead battery. The Kia roadside assistance person was unable to jump start it.

Battery inexplicably drains to death. I purchased the vehicle new and, within 5 days, had battery failure. The first sign of the issue is the inability to utilize remote commands via the Kia app, receiving a message that the vehicle's battery is at a low charge of <40%. Without intervention, the battery will then drain to death.

Battery drain which results in vehicle not starting. There have been a series of events that ended in my Carnival not starting. Purchased new on July 6, 2024. Picked up from to Dealership July 8, 2024 and drove home. The below events started Aug 2, 2024 1. Side mirrors didn’t “wake up” when I approached with key fob 2. Truck wouldn’t close (had to manually pull shut) 3. Received app notification when attempting to lock doors through app that battery was less than 40% 4. Received dashboard warning when attempting to start 5. Lights remained on for a few seconds after attempting to start 6. Vehicle wouldn’t start 7. Turn signal - Action required via app 8. Towed to Dealership 8/5/2025 a vehicle would not start

Battery randomly died in the car overnight

Brand New 2025 KIA Carnival SX model - experiencing major electrical failure within the first month (around 800 miles). There's a battery negative draw issue, and the car battery will die completely within 3 days, if not driven. Had to jump-start the car 4 times within the first month. One of the incidents had me stuck right in the middle of the road - When the battery is low, turning on the AC will result electrical system flickering, and then shutting the car down entirely. The dealership acknowledges the issue but stated no solution has been found yet.

I've owned my new car for less than two weeks and already my car has a dead battery. I did not leave any lights on or doors opened.

As noted my many drivers in the Kia forum, I bought a 2025 Kia Carnival SX prestige only have a dead battery 2 week into ownership.

Battery drain and dead battery when parked overnight.

Vehicle sat in my garage in for 2 days and when I went to go drive, I found the vehicle was dead and had to be jumped. The vehicle currently has 370 miles on it and when I started the vehicle, it returned an error stating that the electrical system drained the battery.

Battery died after owning the car for 4 days. Kia service could not determine a cause. Parasitic drain of the battery caused car to be dead.

New 2025 Carnival SXP that has been taken back to the dealer on 2 separate occasions in the first 2 weeks of owning the vehicle. The battery has died 4 times with no obvious reason for the parasitic draw. The dealer recharged the battery once but the issue again come back just a few days later. After the second trip to the dealer, they replaced the battery, but are unable to find any other reason for the problem to have occurred.

The battery on my new Kia Carnival 2025 SX has repeatedly died within the first few weeks of ownership. There seems to be some issue causing it to drain within 2-3 days. The battery has drained down to 4V and 7V in two of the instances. It does charge back up to full but will resume draining afterward, usually dying in 2-3 days. Kia dealer has replaced the battery but the issue still occurred after and now it is at the dealer for the third time in a month. They confirm the issue but have not been able to identify the cause of the parisitic drain yet.

On July 19, 2024, my 2025 Kia Carnival SXP experienced a significant battery drainage issue, rendering the vehicle inoperable. The cause is currently unknown, but it seems to involve a parasitic electrical draw that drained the battery while the car was parked and turned off. This issue occurred despite no prior warning or indication of battery problems. Compounding the situation, the door locks, including the mechanical lock, were disabled, preventing access to the vehicle. Kia roadside assistance sent a locksmith, who had to jump-start the vehicle to restore operation. After the jump-start, I received warnings that multiple systems were inoperable, including critical safety and driver assistance features such as the integrated braking system, motor-driven power steering, and tire pressure monitoring system. These failures raise serious concerns about the vehicle's reliability and safety, as it became inoperable and inaccessible without warning, potentially leaving drivers and passengers stranded in dangerous situations.

After a week of owning the car the battery died over night. Was jumped by roadside and died later that day and jumped again. After the 2nd jump, the AC and air bags didn’t work. Then the check engine light came on. Kia has had my brand new carnival since July 26 with no fix.

Vehicle was purchased 7/31. Due to seeing others reporting battery drain, I began testing battery charge. I can report that my vehicle is also affected. Voltage drops significantly after just 12 hours of sitting. There’s a parasitic draw somewhere in the vehicle that is killing the batteries in EX, SX, and SX Prestige trims. I’ve purchased a jump box and I now hook it up to a battery tender every night. So far, this has prevented a dead battery, but this shouldn’t have to be done with a vehicle that isn’t yet a month old.

battery constantly dead. If the vehicle is locked, can't unlock, even with provided manual key. Dies on the highway creating dangerous conditions.

The first sign of the parasitic battery drainage is typically a warning in the Kia Access app that says the vehicle's 12v battery levels have dropped below 40% and remote functions are halted. The app will not inform you of this issue. It's only when you try to use remote functions will you find out. The more direct way of knowing about the issue is obviously discovering a dead battery which will have to be jump started. For me, this happened around 400 miles after purchasing the vehicle brand new. The vehicle is now at the dealership for servicing.

Battery died without warning. Took 30 minutes to jump start. Nothing was left on, no warnings prior. Took it to the dealership the next day. They ran some tests. Everything appeared fine with the battery.

Parasitic battery drain leaves car dead and unusable no matter how many jumps/replacement batteries. It happens overnight. This is WIDESPREAD - there are entire Facebook and Reddit groups with thousands of people with the issue. We need to have a fix so we can drive our cars. Driving it home from the dealership just to have it jumped or towed back to Kia and have it sit for weeks without a solution is UNACCEPTABLE. $60k for a car we can’t drive. Absolutely insane. It’s so unsafe to have a family vehicle - a minivan - have dead batteries with no warning on brand new cars. There were less than 75 miles on my car when it first happened. I had made one trip home from the dealership and one trip to the grocery store. This problem is affecting EVERYONE and Kia is about to be out of service techs and...

At around 200 miles, I could no longer gain access to my vehicle via via both keys and the Kia app. My vehicle has been sitting at the dealership for 20 days without a resolution and little communication from Kia

Our 2025 SX Prestiege was purchased on a Saturday afternoon and by the following Tuesday morning we had a low battery alert (below 40%). Our local Kia dealers are of no help as this appears to be a common issue that is related to something they are unable to diagnose. I have been placing my battery on a charger every night so we can still use the vehicle but every day the battery is low and requires this charge.