2023 Hyundai Sonata Service and Repair Manual
Hyundai built the 2023 Sonata in naturally aspirated, turbocharged and full hybrid form, and this factory service and repair manual is tied to the exact year, engine and trim you are working on, so the figures you work to are the ones Hyundai published for that build rather than a value carried over from a neighboring model year.
Engines covered
- 2.0L inline-four full hybrid — DOHC, naturally aspirated, gasoline
- 2.5L inline-four — DOHC, turbocharged, gasoline
- 2.5L inline-four — DOHC, naturally aspirated, gasoline
- 1.6L inline-four (98 cu in) — DOHC, turbocharged, gasoline
Body styles covered
- 4-door sedan
Trims covered
- Hybrid Blue
- Hybrid Limited
- Hybrid SEL
- Hybrid Ultimate
- Limited
- N Line
- Preferred
- SE
- SEL
- SEL Plus
- Sport
Known issues on the 2023 Sonata. Two recalls are on federal record for this model year. The first falls under power train, automatic transmission fluid pump, and concerns the Idle Stop & Go oil pump assembly: an electric oil pump assembly that overheats increases the risk of a vehicle fire. The second falls under the gasoline fuel system, where a damaged check valve can allow air to enter the fuel tank, causing it to expand and contact hot exhaust components; a melted fuel tank can leak, increasing the risk of a fire. Owners have filed 135 complaints against the 2023 Sonata, and Hyundai has issued 49 technical service bulletins for it.
Whether you are chasing a fuel-delivery fault, working on the Idle Stop & Go oil pump, or servicing the hybrid driveline, it keeps you on Hyundai’s own procedure and the figure that matches your 2023 Sonata trim.
Hyundai Motor America (Hyundai) is recalling certain 2023-2024 Palisade Tucson, 2023 Sonata, Elantra, and Kona vehicles. The electronic controller for the Idle Stop & Go oil pump assembly may contain damaged electrical components that can cause the pump controller to overheat.
An electric oil pump assembly that overheats increases the risk of a vehicle fire.
Owners are advised to park outside and away from structures until the recall repair is complete. Dealers will inspect and replace the electric oil pump controller, as necessary, free of charge. Owner notification letters were mailed starting September 7, 2023. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 246.
Hyundai Motor America (Hyundai) is recalling certain 2020-2023 Sonata 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 inspect and replace the check valve. The fuel tank assembly will be inspected for damage and replaced if necessary. Additionally, dealers will inspect and update the engine control unit software. All repairs will be performed as necessary, free of charge. Owner notification letters were mailed beginning March 13, 2026. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 286. Vehicle Identification Numbers (VINs) involved in this recall
This bulletin provides information related to a Transmission Control Unit (TCU) software update for some vehicles equipped with an 8-speed wet dual clutch transmission (8WDCT). The software update revises the touch point learning variation,
This bulletin provides information related to the navigation and head unit software changes introduced in the 2026 1st Navigation Map and Software Update. The changes may vary depending on vehicle type, model, and navigation system. Refer t
The National Highway Traffic Safety Administration (NHTSA) has identified the presence of substandard and dangerous drivers-side airbag inflators manufactured by Jilin Province Detiannuo Automobile Safety System Co., Ltd. (DTN). These infla
The National Highway Traffic Safety Administration (NHTSA) has issued an urgent safety advisory regarding dangerous, counterfeit driverside airbag inflators manufactured by Jilin Province Detiannuo Automobile Safety System Co., Ltd. (DTN),
Some vehicles may exhibit difficulty starting in cold weather. This bulletin provides the procedure to perform an inspection on the starter magnetic switch for potential freezing and, if necessary, replace the starter magnetic switch (solen
Some 2019MY and newer vehicles equipped with a front view camera may illuminate certain warning lights and trigger DTC C272246 fault code for the front camera. In the following cases, the front camera auto-calibration range may be exceeded
Some Sonata (DN8, DN8A) vehicles may have DTCs P218100, P2181F0, and/or P2181F1 (Cooling System Performance) set in the Engine Control Module, resulting in an illuminated Check Engine warning lamp. Follow the procedure in this TSB to replac
Some vehicles equipped with a 2.5L GDI Theta III engine (non-Turbo) may exhibit one or more misfire DTCs due to the GDI fuel injectors leaking internally. This may be caused by internal filter breakage in the injector. Follow the procedure
Showing the 8 most recent of 50 technical service bulletins on file with NHTSA.
My concern is a potential unintended acceleration forward as. I was. parking vechicle. Sudden burst of speed, went thru shrubbery and off a 2 foot wall. Felt as if we were taking off a runway in a plane. Car went nose up over the wall and then dropped into a neighbor yard digging a divot, ripping rear left fender and bumper with some undercarriage problems. My spouse and I were seatbelted and not injured. I can not recall any safety warning until car stopped and then do recall a message being o
Reported this previously, but more information was gathered, thanks to collision mechanic who guessed immediately when he heard 2023 hybrid Sonata - he said "they're notorious for it." Was at a stand still in a parking space/lot I know well. Cautious driver, watch my speed, very aware of other drivers, quick reaction time. Incident mid day, no pedestrians, distractions, no moving traffic. Vehicle doors shut, seat belt on. Not on incline. Pulled into parking spot I use weekly, spot has parking cu
Recall 286 my vehicle suffered from this causing heat module failure misfire in cylinder 2 and high pressure in gas tank. Sports Hyundai had previously done a 180 day repair under recall 9b1 for an expanded gas tank after the repair the car suffered from the updated recall 286 . I brang to the dealership 4 times with check engine and misfires and limp mode between 57k and 68k they refused to fix the car under recall 286 and cleared all the codes and continued to make me leave in a unsafe car. On
Car was parked, full stop, doors shut, seatbelt on. Foot on brake. Car then seemed to lurch forward by itself forward hitting parking cement block. Put in reverse to back away and car stayed still...then I tapped the gas again to back up and insted vehicle plowed forward.instead.of reverse ...went over the parking block and hit concrete beam in front, when the car should have backed up in reverse. I'm a person who drives speeed limits, and ulta careful when i drive, and parked at this place/spot
Instrument cluster lighting is too bright even on lowest setting. Combined with poor side visibility from headlamps it is easy to hit object or pedestrians when turning on unlit areas. Have run over a curb three times and damaged two wheels because they can't be seen from the overly bright instrument lighting at night.
Twice within the first 26k miles i had 2 individual fuel injectors go bad. Both times my check engine light came on in the middle of driving, and then my car would no longer increase in speed and left me stranded on the road. Luckily, i was able to pull over to the side of the road. The random malfunction of the vehicle could’ve caused an accident or put my life, as well as the drivers on the road, in danger. When my vehicle arrived at the dealership, i was told that it was “because of the gas i
P074D73 is code showing up coming up and going off after sometime. This is code something related to the Transmission. Worried if it could cause the Transmission to fail which may result in loss of power during the drive which could potentially cause fatal accidents. It occured Multiple times. Attached the screenshots
On a highway cruising at 70mph with the ACC (Adaptive Cruise Control ) on and following distance set at max a car from another lane turned into my lane and then continued to an off ramp. My car initially braked and then downshifted from 8th to maybe 4th and accelerated hard - scaring me and my passengers. I did add to the actions of the car by pressing the following distance button on the steering wheel a few times. I had owned a 2016 Sonata with ACC and drove over 100K miles with ACC operating.
I bought the new car on 11/21/22. There have been two incidents with the same cause. Incident #1: On 1/25/23, while I was on a six lane highway with high speed traffic and rush hour level traffic, the car began to fail, with 'bucking', failure to respond to the gas pedal, loss of power, and difficulty steering. At that time, the check engine light also went on (it had not been on previous to the event starting). I was able to get the car off the highway, where it completely died - it would not m
My car was having an issue where it was losing all the coolant, causing my engine to overheat twice while driving down the highway. Unfortunately I couldn't find a leak anywhere and there was no fluid leaking in my garage. I lost an entire reservoir of coolant overnight. After taking my car to the dealership to get repaired, I was told that it was leaking my coolant into the exhaust system and burning it up. I was also told "it was a know issue, they had a bulletin from Hyundai on how to fix the
Took a trip to the grocery store, and started up my car when I got back. The engine turned over but after a few seconds, it stalled. Tried this again, but lightly pressed the accelerator. This raised the RPM, but it dropped quickly and stalled the engine again. Made a couple more attempts after and eventually, the engine light came on. Shortly before this incident, I had about 10-15% of gas left in my tank. After this happened, bluelink reported that I had 1% left. Got the vehicle towed to the d
I am reporting a serious coolant system defect on my 2023 Hyundai Sonata Hybrid with about 13,500 miles. The vehicle develops an internal coolant leak while driving. Coolant burns off and white steam/smoke comes out of the exhaust, especially during acceleration. When this happens, the coolant level drops quickly, the interior heater stops working, and the car soon displays an engine overheating warning, forcing me to stop driving. This has happened multiple times and makes the vehicle unsafe.
Car stalls and shuts down while shifting to park or reverse and when slowing to turn or stopping. Also the media screen will black out and not work at times.
Vehicle’s front collision sensor popped up on dash, vehicle lost all power. Almost was hit by a group a semi trucks hauling a wide load that wouldn’t have been able to stop in time. This is the 3rd time it has happened in a week and a half.
The contact owns a 2023 Hyundai Sonata. The contact stated that on two separate occasions while driving at various speeds, the vehicle started to shake, and the vehicle lost motive power. The vehicle was pulled over to the side of the roadway and turned off. The vehicle failed to restart on both occasions. The vehicle was towed to a dealer where it was diagnosed that the fuel injector needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The failure mile
Showing the 15 most serious of 85 complaints filed with NHTSA.
