Because this factory service and repair manual is matched to the 2023 model year, engine and trim of your K5, every specification and tightening sequence it gives is the one Kia published for this exact sedan, not an approximation carried forward from another year of the same nameplate.
Engines covered
- 1.6L inline-four (98 cu in) — DOHC, turbocharged, gasoline
- 2.5L inline-four — DOHC, turbocharged, gasoline
Body styles covered
- 4-door sedan
Trims covered
- EX
- GT
- GT-Line
- LX
- LXS
Known issues on the 2023 K5. Three recalls are on federal record for this model year. The first covers the gasoline fuel system: a damaged check valve can allow air to enter the fuel tank, causing it to expand and contact hot exhaust components, and a melted fuel tank can leak, increasing the risk of a fire. The second covers the automatic transmission, whose fail-safe limited-mobility drive mode may be impaired; the resulting loss of drive power increases the risk of a crash. The third covers the side curtain air bags, which may have been installed incorrectly, causing them not to deploy properly in the event of a crash and raising the risk of injury. Owners have filed 136 complaints for the year and Kia has issued 68 technical service bulletins.
From tracing a fuel-system fault to checking how the side curtain air bags were installed or working through a scheduled service interval, it keeps you on the OEM procedure and the correct specification for your specific 2023 K5.
Kia Motors, Inc. (Kia) is recalling certain 2021-2022 Sorento and 2021-2023 K5 vehicles. The vehicle's "fail-safe" limited-mobility drive mode may be impaired, when prompted by a transmission oil pump malfunction, which can result in a complete loss of drive power.
Loss of drive power increases the risk of a crash.
Dealers will inspect and replace the transmission, as necessary. Dealers will also update the transmission control unit software. All repairs will be performed free of charge. Owner notification letters were mailed December 9, 2022. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC250.
Kia America, Inc. (Kia) is recalling certain 2021-2023 K5 vehicles. The side curtain air bags may have been installed incorrectly, causing them not to deploy properly in the event of a crash.
Air bags that do not deploy as intended can increase the risk of injury in a crash.
Dealers will inspect and reinstall the side curtain air bags, as necessary, free of charge. Owner notification letters were mailed April 7, 2023. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC263.
Kia America, Inc. (Kia) is recalling certain 2023-2025 K5 vehicles. The left and right rear window trim pieces may loosen and detach.
Detached trim pieces can create a road hazard for other vehicles, increasing the risk of a crash.
Dealers will inspect and replace the C-pillar trim assemblies, as necessary, free of charge. Owner notification letters were mailed November 19, 2025. Owners may contact Kia customer service at 800-333-4542. Kia's number for this recall is SC346.
Kia America, Inc. (Kia) is recalling certain 2021-2024 K5 vehicles. A damaged check valve can allow air to enter the fuel tank, causing it to expand and contact hot exhaust components, melting the tank.
A melted fuel tank can leak, increasing the risk of a fire.
Dealers will replace the check valve. The fuel tank will be inspected for damage and replaced as necessary. All repairs will be performed free of charge. Owner notification letters were mailed January 16, 2026. Owners may contact Kia customer service at 800-333-4542. Kia's number for this recall is SC356. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning December 1, 2025.
TECHNICAL SERVICE BULLETIN: INFOTAINMENT SYSTEM SOFTWARE UPDATE USING UPDATE.KIA.COM - This bulletin provides information and service procedures for updating the infotainment systems on applicable Kia vehicles using the Kia Navigation Updat
TECHNICAL SERVICE BULLETIN: INFOTAINMENT SOFTWARE UPDATE PROCEDURE - This bulletin provides information on the process for downloading infotainment software updates and preparing USB for installation on applicable Kia vehicles. The software
TECHNICAL SERVICE BULLETIN: CUSTOMER ACTION: CHROME TRUNK LID MOLDING REPLACEMENT (CA2514) - This bulletin provides information regarding replacement of the chrome trunk lid molding on certain 2023-2024MY K5 (DL3a) vehicles produced from Oc
TECHNICAL SERVICE BULLETIN: VOLUNTARY EMISSIONS SERVICE CAMPAIGN: FUEL TANK AND/OR PCSV CHECK VALVE INSPECTION/REPLACEMENT + ECU SW UPGRADE (SC288/SC288A) CLOSED & SUPERSEDED - This bulletin is now closed and superseded by SC356. This bulle
PITSTOP: TECHNICAL OPERATIONS: EXTERNAL DAMAGE TO ULTRASONIC SENSOR: This Pitstop provides information related to Parking Distance Warning (PDW) alerts and repairs involving ultrasonic sensors. The PDW system alerts the driver while parking
TECHNICAL SERVICE BULLETIN: SERVICE ACTION: TRUNK LID AND C-PILLAR GARNISH INSPECTION & REPLACEMENT (SA552) - CLOSED AND SUPERSEDED BY SC346 - This bulletin is now closed and superseded. This bulletin provides information to inspect the rea
TECHNICAL SERVICE BULLETIN: ITM REPLACEMENT AND ECM LOGIC IMPROVEMENT (CA2511) - This bulletin provides information to replace the Integrated Thermal Management Module (ITM) and then upgrade the Engine Control Module ECM system software on
VOLUNTARY EMISSIONS SERVICE CAMPAIGN: OWNER RENOTIFICATION (SC288 FLIGHT 301) - This document is the owner renotification advising that Kia is conducting a Voluntary Emissions Service Campaign on certain 2021-2024 MY K5 vehicles equipped wi
Showing the 8 most recent of 68 technical service bulletins on file with NHTSA.
I was in a car accident on 6/30/23. I was side swiped and the front airbag deployed and exploded in my face, knocking me unconscious and leaving me with chemical burns. I had a grade 2 concussion so it's hard to remember a lot. I was taken to the hospital. And drivers and passengers from 3 other vehicles were also taken to area hospitals.
I was involved in a head on collision, all of my safety warning notified me but my airbags NEVER deployed. This is a serious safety hazard especially with many problems being reported with airbag deployment. The adjuster and collision center both stated at the rate of speed from the accident, the airbags should have definitely deployed. My car was deemed a total loss from the damage even without the deployment.
The contact owns a 2023 Kia K5. The contact stated that while driving at approximately 5 MPH and approaching a stop sign exiting a parking lot, as the contact depressed the brake pedal to stop for a commercial truck stopped at the exit, the "collision warning" illuminated. The contact stated that the brake pedal went soft and depressed to the floorboard. The contact stated that he crashed into the rear of the truck. The contact stated that there was a slight dent in the metal frame of the truck.
I was involved in a traffic accident on May 29 2023. I was hit on the passenger side sustaining $18,000 in damages. My side air bag never went off.
Went through automatic car wash, in neutral. The gear shifted and the car sped up, bumping the back of another car in front. No warning sound, and no auto break.
Back number was replaced
In June 2025, while driving my 2023 Kia K5 (VIN: [XXX] ) at highway speeds on [XXX], the fuel tank suddenly imploded. A loud bang caused the rear seats to lift, startling me and my passengers. The car lost power, and braking too hard risked leaving us stranded in fast-moving traffic. I narrowly avoided a crash while trying to maneuver us to safety. This vehicle was previously recalled by Kia in April 2024 for a fuel tank defect affecting ~236,000 vehicles. I took it to Gunther Kia in Davie, FL
I am submitting this complaint regarding a serious safety defect involving my Kia K5 and the subsequent handling of this matter by Kia America. My vehicle was subject to a voluntary recall and was inspected by an authorized Kia dealership. During inspection, I was informed the vehicle has a defective fuel tank system that allowed air intrusion, resulting in abnormal pressure and structural impact to the vehicle. I was further advised by dealership personnel this condition created a risk the vehi
The contact owns a 2023 Kia K5. The contact stated that while driving at an undisclosed speed, there was a fuel odor inside the vehicle. Occasionally, the low fuel warning light was illuminated. While attempting to refuel the vehicle, gasoline was not entering the fuel tank as intended. The fuel odor inside the vehicle grew stronger. The failure was persistent. The vehicle was taken to the dealer, where the contact was informed that the failure was severe. The contact was informed that, due to t
I was driving and it was a loud noise. My son flew up with seat belt on hit his head on roof , gas tank blew up / or swelled up and my back seat is sitting about 10-12 inches above then normal. Very scary and worried
The contact owns a 2023 Kia K5. The contact stated that while driving at 65 MPH in hot weather, a loud popping sound came from underneath the vehicle. The vehicle lost motive power. The check engine warning light was illuminated. The contact coasted into a ditch and inspected the vehicle, but no exterior damage was found. The vehicle was restarted and driven to a gas station. The check engine warning light was no longer illuminated. The vehicle was taken to the dealer, but the cause of the failu
Engine came on and off twice, car was smelling like gas and driving rough. Tried to put gas in car and it would not take the gas, it wasted all over car. I checked my back seat and felt it was hard and sitting right so I looked under and the seat was lifted. After doing research, I learned I have an expanded fuel tank. Not only that but there has been a recall on it that I was unaware of, I took the car immediately to the nearest dealership and they acknowledged there’s a recall and I can’t driv
The contact owns a 2023 Kia K5. The contact stated that while driving at various speeds, the check engine warning light intermittently flashed on the instrument panel. The contact used a code reader to diagnose the failure and received a code for a defective valve with an excessive amount of air. The contact then stated that while driving 80 MPH, there were three loud booming sounds coming from the rear end of the vehicle. The contact inspected the vehicle but found no external damage; however,
The kia since bought brand new would have alignment issues even after getting alignments every 3-4 months and the dealership claim that they don’t whats causing constant misalignment after seeing theres no signs of external damage. Due to the misalignment it wears down the tires and made one of my tires explode on the road. Also the door seal on the driver side gets a chunk ripped out from just opening and closing the door over time. Also the breaks, whenever I break from speeding to slow down t
The contact owns a 2023 Kia K5. The contact stated that while driving at various speeds, there was an abnormal sound coming from the vehicle, the fuel level was lowering, and a fuel odor was entering the cabin of the vehicle. No warning light was illuminated. Upon further inspection, the contact became aware that fuel was leaking from the vehicle onto the ground. The contact received notification of NHTSA Campaign Number: 25V794000 (Fuel System, Gasoline); however, the part to do the recall repa
Showing the 15 most serious of 104 complaints filed with NHTSA.
