I purchased my 2023 Kia Sorento in 2024 from Rohrman Kia in Lafayette, Indiana. At the time of purchase, the vehicle had approximately 9,000 miles and had previously been utilized as a dealership loaner vehicle. Since purchasing the vehicle, I have experienced recurring mechanical concerns involving the vehicle’s auto start/stop system and a significant, unexpected loss of engine power. During an occurrence, the auto start/stop indicator (A) began flashing on the instrument cluster, and the vehicle experienced severely reduced acceleration, limiting my ability to travel above approximately 15 mph. This malfunction presents a substantial safety concern, particularly when operating the vehicle in traffic or on roadways where maintaining an appropriate speed is necessary. An unexpected reduction in power compromises my ability to accelerate normally, merge safely, maintain the flow of traffic, or respond appropriately to surrounding vehicles, potentially placing myself, my passengers, and other motorists at risk. I have returned the vehicle to the authorized Kia dealership for a year and a half now, regarding recurring mechanical concerns. Despite these service visits, I have been informed that the dealership has been unable to reproduce the reported malfunction, and that the vehicle is throwing no codes during its diagnostic inspections. To my knowledge, the underlying cause has not been conclusively identified or permanently corrected. The warning symptom I observed was a flashing auto start/stop (A) indicator accompanied by a substantial reduction in vehicle power. I cannot confirm which specific mechanical or electronic component is responsible for the malfunction. I have also escalated my concerns to the general manager of Rohrman Kia due to the recurring nature of these issues and the lack of a satisfactory resolution. I am requesting that this safety concern be formally documented and investigated to determine whether a defect exists.
Kia Sorento start-stop problems
18 of the 10,244 owner complaints about the Kia Sorento describe start-stop system problems, most of them for the 2021 model year.
- owner complaints
- 18
- worst model year
- 2021
- typical mileage
- 34,000
By model year
Often reported together
Warning lights 2Stalling 2Loss of power 2Screen failure 2Check engine light 2Won't start 1Won't shift 1Power steering loss 1
What owners say
Vehicle flashes Auto Start Stop icon on the dashboard, which is not commonplace. When this occurs, the vehicle can not accelerate when the accelerator is actuated. The vehicle can not accelerate past 40mph and the RPM is sporadic. This happens randomly and can not be diagnosed by the dealership. Multiple dealerships have tried and none can duplicate this issue. This is a severe safety concern and seems to be common all over multiple forums.
My car will randomly go into limp mode and I am unable to accelerate. The auto stop/start light will flash orange on the dashboard. I need to pull over and restart car and it seems to reset. I see there is a recall for a 2021 KIA Sorrento but I don't think it affected my vehicle even though the issue is exactly the same. Recall #22V6000. It happened once a few months ago then didn't reoccur until about two weeks ago and it has happened three times since. It is scary because I am afraid to cross traffic in fear that the car won't move fast enough
The vehicle intermittently fails to start in two different situations. First, when the auto Stop/start system shuts the engine off while the vehicle is stopped anywhere, the engine sometimes refuses to restart, leaving the vehicle immobilized. Second, there are occasions when I park the vehicle, turn it off normally, and upon returning, the engine will refuse to start.
The Auto Start-Stop System light came on flashing while driving. Vehicle wouldn’t accelerate while in heavy traffic. Pulled over to the shoulder and turned vehicle off. Attempted to start vehicle again and would not start. Had to get the vehicle towed. Positive battery post is loose and screw is tightened as much as possible.
Check engine light on. Rear defrost doesn't work. Auto stop/start not working. Cruise control not working. Vehicle shuts off sometimes at stand still and have to put in neutral or park and push Start button. Engine looses power while driving. Check rear cross traffic, check tire pressure monitoring system, check lane departure warning system, check speed limit system, check lane keeping assist, check forward safety system lights are cycling on the front screen and warning â ï¸ signs pinging. Vehicle has been inspected 3 times at a local KIA DEALERSHIP. 1st in 4/2025, 2nd 6/2025 3rd time 10/2025. Module was replaced and 2 days later same issue so Vehicle will be going back a 4th time. No warnings before issues started. Sometimes it does it for hours and sometimes it's back to normal.
The contact owns a 2021 Kia Sorento. The contact stated that while the vehicle was parked or while driving, there was an abnormal sound coming from the A/C when activated or turned off. The contact stated that after lowering the temperature, the air conditioning shut off independently. The contact stated that the alarm independently turned on at all hours of the night. The contact stated that the rear plug outlets in the vehicle failed to operate as intended, and the rear plugs turned on and off independently. The contact stated that while driving at undisclosed speeds, the Auto START/STOP system independently turned off the vehicle. Additionally, the rear-view camera was displaying a blank screen, with the Auto START/STOP warning lights were illuminated. A dealer was contacted. The vehicle was taken to a dealer to be diagnosed; however, the diagnosis was unknown. The vehicle was not repaired. The contact stated that the failure had occurred on several occasions. The manufacturer was notified of the failure and informed the contact that the dealer was unable to determine the cause of the failure, so there would be no assistance provided. The failure mileage was approximately 108,000.
I have had many issues where my car will completely shut off after the auto start-stop function causing me to almost get into accidents with my toddlers in the vehicle. There was one incident where I was at a stop light, when the light turned green I started my car again to go and another vehicle continued to bypass me. When i halted for the other vehicle, my engine shut off again almost the cause of a horrific accident. I have had many incidents after this with the related cause of engine shutting off.
My electrical system failed. While on park I was unable to shut of the vehicle using the engine start stop button. After waiting for the vehicle to automatically turn off. The vehicle started trying to restart itself. The negative battery post had to be removed for the vehicle to stop. The entire safety system failed and all warning lights are still displayed on the dash. The backup camera and radio display went completely blank and was unavailable.
On three separate occasions, after starting the vehicle, the car cannot be accelerated above 30 mph. The Idle Stop and Go (ISG or Auto Start Stop feature) light flashes orange, but no other warning symbols are illuminated. After safely moving the vehicle off the road, I have to turn off the engine, wait for 2-4 seconds, and restart the engine. Once the vehicle is restarted, the vehicle accelerates normally. This issue has happened twice in the past month. I plan to take my car to a Kia dealership for an inspection, but since this problem happens randomly, the Kia technicians may not be able to reproduce the problem. I purchased this vehicle used with about 77k miles in December 2023. I first noticed this issue in April 2024. The vehicle now has a little under 98k miles recorded.
Related recalls
Electrical system: instrument cluster/panel
- What is wrong
- Kia America, Inc. (Kia) is recalling certain 2025 Kia K4, 2025-2026 Sorento, Sorento Hybrid, Sorento Plug-In Hybrid Electric (PHEV), 2026 Sportage, Sportage Hybrid, Sportage PHEV, K5, EV9, Carnival, and Carnival Hybrid vehicles. Due to a software error, the instrument panel display may fail. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) numbers 101, "Controls and Displays" and 138, "Tire Pressure Monitoring System."
- Risk
- An instrument panel display that fails to show critical safety information, such as the speedometer, tire pressure, or warning lights, increases the risk of a crash.
- Remedy
- The instrument panel display software will be updated over-the-air (OTA) or by a dealer, free of charge. Owner notification letters are expected to be mailed March 26, 2026. Owners may contact Kia Customer Service at 1‑800‑333‑4542. Kia's number for this recall is SC361. Vehicle Identification Numbers (VINs) involved in this recall will become searchable on on February 9, 2026.
Recall number 26V046000 · Recall details
Electrical system: body control module: software
- What is wrong
- Kia America, Inc. (Kia) is recalling certain 2024-2025 Sorento, 2025 Sorento Hybrid, and 2025 Sorento Plug-In Hybrid vehicles. A software error in the Body Domain Control Unit (BDC) may cause a loss of low beam headlights and taillights. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) 108, "Lamps, Reflective Devices, and Associated Equipment."
- Risk
- A loss of headlights and taillights can reduce visibility, increasing the risk of a crash.
- Remedy
- Dealers will update the BDC software, free of charge. Owner notification letters were mailed February 21, 2025. Owners may contact Kia customer service at 1‑800‑333‑4542. Kia's number for this recall is SC331.
Recall number 25V006000 · Recall details
Electrical system: wiring
- What is wrong
- Kia America, Inc. (Kia) is recalling certain 2024 Sorento vehicles. The motor driven power steering (MDPS) wiring harness may be incorrectly assembled, which can result in a loss of power steering assist.
- Risk
- A loss of power steering assist increases the risk of a crash.
- Remedy
- Dealers will inspect and repair, or replace the MDPS wiring harness as necessary, free of charge. Owner notification letters were mailed May 7, 2024. Owners may contact Kia customer service at 1‑800‑333‑4542. Kia's number for this recall is SC309.
Recall number 24V287000 · Recall details
Electrical system
- What is wrong
- Kia Motors America (Kia) is recalling certain 2006-2010 Sedona and 2007-2009 Sorento vehicles. Moisture may enter the Anti-lock Brake (ABS) Module and result in an electrical short.
- Risk
- An electrical short within the ABS Module may cause an engine compartment fire, even when the vehicle is turned off, increasing the risk of an injury.
- Remedy
- Kia will notify owners, and dealers will install a relay in the main junction box to prevent power from being directed to the HECU when the vehicle's ignition switch is turned off, free of charge. The recall began June 5, 2020. Owners may contact Kia customer service at 1‑800‑333‑4542. Kia's number for this recall is SC186.
Recall number 20V088000 · Recall details
Electrical system: wiring
- What is wrong
- Kia is recalling certain model year 2010 soul and model year 2011 sorento vehicles manufactured from september 7, 2009 through july 30, 2010. A limited number of wiring harnesses supplied by jci and used for the lighting in the kia soul vehicle's advanced lighting speakers, located in the front door trim panels, and the kia sorento vehicle's interior accent illumination, located in the front and rear door trim panels, may have been improperly soldered.
- Risk
- When the lights are illuminated under certain conditions, an electrical short may occur that can result in a fire.
- Remedy
- Dealers will replace the wiring harnesses for the lights in the kia soul vehicle's advanced lighting speakers, and the wiring harness for the kia sorento vehicle's interior accent illumination. This service will be performed free of charge. The safety recall began on september 13, 2010. Owners may contact kia consumer assistance center at 1‑800‑333‑4542.
Recall number 10V388000 · Recall details
Questions about the Kia Sorento start-stop
Which Kia Sorento years have start-stop system problems problems?
The model years with the most reports are 2021 (7 complaints), 2022 (5 complaints) and 2023 (4 complaints).
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