Kia Sorento battery drain problems

Filed Nov 3, 2026 · Electrical · VT

The 12-volt battery system repeatedly collapses while the 2023 Kia Sorento Plug-in Hybrid is parked, leaving the vehicle completely immobilized: the doors will not unlock/open normally and the vehicle cannot be started, even though the high-voltage hybrid battery and fuel are ample. On November 2, 2026, after six days parked, the 12-volt system measured approximately 6 volts, about half of nominal. The vehicle could not be revived by 14+ hours on a battery maintainer; on November 3, 2026, roadside assistance revived it with a jump pack applied for about 1.4 seconds, confirming a system failure rather than an energy shortage. The defect has previously locked the owner out of the vehicle at -12 degrees Fahrenheit in upstate New York, a safety hazard in cold climates. The owner's instrumented findings, reported to Kia America in writing on February 9, 2026 and again November 2, 2026, show persistent parasitic draw during idle states, inconsistent charging of the 12-volt battery by the DC-DC converter, and no logic to re-energize the 12-volt system from the charged high-voltage battery. Kia has provided no substantive technical response. The vehicle/component is available for inspection upon request. No crash, no fire, no injuries. Manufacturer and dealer were notified in writing.

Filed Sep 18, 2026 · Engine · PA

The cars battery drained precipitously. Was able to sit and recharge. Took it to dealership. There were several code issues P033500 and P040500 among others. In discussion it seems that it might have been the EGR valve among other things. On research this is a known problem so why is there not a recall as the car can stop suddenly. "2024 Kia Sorento Hybrid Prestige (equipped with the Smartstream 1.6L Turbo Hybrid engine), code P0405 highlights a known issue that affects several modern Hyundai and Kia hybrid models."

Filed Jul 23, 2026 · Brakes, Electrical · GA

This is a follow up of the federal safety agency case# 1840444. Complaint Description: Vehicle exhibited active CAN-bus communication timeout code DTC C1642 targeting the Hydraulic Electronic Control Unit (HECU). Following the official technical safety guidelines established under the federal safety agency Campaign 20V519000 (Kia SC197), an isolated parasitic current draw test was performed between the engine junction box positive power post and the ABS2 circuit terminal. Testing across three independent iterations utilizing a digital multimeter confirmed a continuous localized parasitic draw of 218.6 uA. This dramatically exceeds the manufacturer's maximum safety engineering threshold of 70.0 uA by over 312%. This quantified excessive amperage draw conclusively isolates an internal circuit board short-circuit condition caused by a failure of the internal HECU brake fluid seals. The vehicle presents an immediate network communication failure, brake malfunction, and thermal/fire risk. Kia Corporate must be compelled to immediately authorize an expedited, zero-cost component replacement under the active safety recall mandate.

Filed Feb 26, 2026 · Electrical · MA

This is the 4th time car is unable to start after being parked for one day and it had to be jump starting. At first I thought it was some accessory, specifically a dashcam and aftermarket ambient lights, so I disconnected both and I even turned off the wireless charging pad and disable the function to turn the lights on when doors open and it didn't help, dead car again after 1 day parked. Car was purchased new in august of 2025 and this issue started this past january coincidentally after an OTA update in december. Today, I got the 12v battery tested at my local Advance Auto Parts and battery health came out good, battery level was low (as supposed after a jump start) and it only recommended a recharge. So the issue lies inside the electrical system of the car and to my surprise this parasitic draw is not new, in online forums a lot of owners talk and complaint about this specific issue, even here I found a similar complaint and I wonder why there's not at least a technical bulletin from KIA addressing this issue. Finding out the cause of the battery draining fast is imperative because if overlook this can evolve into something more serious because we don't know what it is that is "always on" drawing big amounts of power and can clearly be classified as a fire hazard. I remember having the same issue with my old car, a 2019 Kia Sorento EX, and it was solved with a simple computer update (NOT the map or infotainment update), it was a firmware only available at the dealership. I just hope this could be the case this time and KIA can respond in a timely manner to solve this issue.

Filed Feb 21, 2026 · Electrical · IL

The Kia Connect fuse was confirmed by Gerald Kia of Naperville to cause a parasitic draw that cannot be fixed. The dealership had to remove the fuse after stating that no software update is yet available, and that numerous owners have had the issue. My car has died 7x with less than 7K miles on it and less than a year old. Bought new. They still have not put the fuse back in and Kia has refused to issue a recall.

Filed Feb 5, 2026 · Electrical · MD

Vehicle only has 5839 miles and this is the 2nd time the battery has been dead. First time was Dec 18th 2025. Vehicle purchased 7/5/25. 2nd time 2/5/26. First time the outside lights flickered for a long time before finally going off. 2nd time the outside lights didnt flicker and key fob wont even lock the car. We took the vehicle in for service after 1st dead battery instance and they told us we must've not closed a door or left a light on which drained the battery. Will be scheduling another service so they can fix the issue. There were no messages or symptoms of the problem prior to the failures. I am requesting that the federal safety agency document this as a potential electrical system safety defect.

Filed Jan 27, 2026 · Driver assistance, Electrical · GA

My key fob doesn’t register even while in car, my battery drains daily has to recieve jump off every Otha day if not daily, door open indicator shows open on all doors even when closed, car locks won’t disengage automatically but your system shows no recalls something’s wrong with it

Filed Feb 13, 2025 · CA

Trunk latch won’t latch, Looked into it and other 2018 Kia sorentos gave the same problem. I called to check for a recall as I bought the car less then a year ago and was told nothing. This is a problem I barely used it and it won’t close now. Just pops back open and will start alerting me that it’s open and won’t latch. Meaning the car will keep beeping that it’s open and then will eventually drain the battery due to the alert going off the whole time (it won’t relatch) it took 8 hours for it to latch to close. This is the Manuel trunk.

Filed Oct 25, 2024 · Electrical, Engine · WI

3 different episodes suv will start by appear warning lights downhill, slippery road, abs, engine , decrease speed, shuts down, tire pressure finally battery dead and rubber smell. I've had it fixed once mentioned it was Altarnator, second time battery, finally third time something electrical or unknown. Total cost now $3000 and my life in danger al 3 times and towec.

Filed May 20, 2024 · Electrical · OH

Q: What component or system failed or malfunctioned, and is it available for inspection upon request? A: The electrical problem started with battery power drainage. After two battery replacements, other electrical problems started to occur. Turn signal lights would not work, windows would not open or close, the left headlamp failed, was replaced, but did not work, all warning lights stayed on. Q: How was your safety or the safety of others put at risk? A: The various electrical failures first occurred while driving the vehicle. I was inable to signal to change lanes. Q: Has the problem been reproduced or confirmed by a dealer or independent service center? A: No. Q:Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? A: Yes. Before the battery drainage issue ocurred, the check engine light and ABS indicator lights began staying on all the time.