Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
26-EE-007H TSB
Service Bulletin/Repair Instructions
Some Palisade (LX2), Tucson (NX4), and Tucson Hybrid (NX4 HEV) vehicles may experience battery drain due to continuous operation of the cooling fan after vehicle ignition has been turned off, potentially resulting in a no-start condition. The continuous cooling fan operation is caused by a stuck relay in the engine room PCB block. This bulletin provides instructions to replace the engine room PCB block to ensure the proper operation of the cooling fan.
DTN DCS
Other
The National Highway Traffic Safety Administration (NHTSA) has issued an urgent safety advisory regarding dangerous, counterfeit driver‑side airbag inflators manufactured by Jilin Province Detiannuo Automobile Safety System Co., Ltd. (DTN), that have been identified in U.S. vehicles following prior crashes, theft, or non‑certified airbag replacements. These inflators are not approved for use, may rupture during deployment, and have caused serious injuries and fatalities. Please see attached announcement, provided by NHTSA, for more details.
DTN DL
Other
The National Highway Traffic Safety Administration (NHTSA) has identified the presence of substandard and dangerous driver’s-side airbag inflators manufactured by Jilin Province Detiannuo Automobile Safety System Co., Ltd. (DTN). These inflators were not supplied, approved, or authorized by the vehicle manufacturers and have primarily been found in vehicles that previously experienced a crash and underwent airbag replacement using non-genuine parts. These dangerous inflators have ruptured during deployment, posing a serious risk of injury or death due to metal fragments entering the vehicle cabin. To date, Hyundai is aware of three people who have died while driving a Hyundai vehicle with one of these substandard replacement airbag inflators that deployed in what likely would have been a survivable crash. NHTSA has issued a public advisory urging vehicle owners and service professionals to have vehicles inspected if there is reason to believe that a non-genuine replacement airbag may have been installed. Vehicles with salvage or rebuilt titles, prior airbag deployments, or unknown repair histories may present a higher risk. NHTSA strongly cautions against self-inspection by vehicle owners and recommends inspection by trained technicians.
26-AD-001H TSB
Service Bulletin/Repair Instructions
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 while driving: • If the front camera is not properly installed and is completely or partially detached. • In case of excessive changes affecting the vehicle's balance (e.g., loading excessively heavy cargo in a specific location of the vehicle, or significant under-inflation of the tires). • Specific road conditions affecting the vehicle's balance (e.g., excessive road crown) This TSB provides instructions on how to service the vehicle when the front camera related warning light(s) are triggered due to system out of calibration (DTC_C272246).
25-BE-021H TSB
Service Bulletin/Repair Instructions
Certain Tucson (NX4, NX4A) and Tucson Hybrid (NX4 HEV) vehicles may exhibit an improper fuel filler door opening or closing condition due to an inoperative fuel filler door release actuator. This bulletin provides instructions to replace the fuel filler door release actuator.
25-BD-012H TSB
Service Bulletin/Repair Instructions
This bulletin provides information regarding condensation related to the accumulated moisture in the headlamp, rear combination lamp, daytime running lamp (DRL), or fog lamp. This TSB illustrates the various causes of condensation inside the lamp assembly. Lamp assembly replacement is NOT necessary in most cases. This condition can be eliminated by turning on the lamps with the engine running for several minutes or during normal driving operation.
25-BE-020H TSB
Service Bulletin/Repair Instructions
This bulletin provides information related to the changes introduced in the 2025 1st Navigation Map and Software Update. The changes may vary depending on vehicle type, model, and navigation system as described in this TSB.
25-01-065H TSB
Service Campaign
Certain Santa Fe Hybrid (TM HEV) and Tucson Hybrid (NX4 HEV) vehicles may exhibit a restricted coolant flow condition, which may be accompanied by a warning message (e.g., Coolant Supplement, Refill Inverter Coolant) in the cluster. No related DTCs are stored, and coolant level is normal in the reservoir tank. The coolant flow may be restricted by debris, causing abnormally high Electric Water Pump (EWP) speed. This TSB contains instructions for confirming high RPMs in the EWP, then using the Coolant Flushing Equipment Set to flush and clean debris from the various cooling system circuits. The existing blue coolant, Electric Vehicle Battery System Coolant (BSC-2), will be used to flush the system. Then the coolant will be replaced with new pink coolant (LLC-10).
25-01-010H-1 9B4 OL
Service Campaign
Certain Hyundai vehicles may exhibit a warning light with Diagnostic Trouble Code (“DTC”) P1BB20 due to a battery over voltage condition.
25-01-010H-1 DN
Service Campaign
Certain Elantra Hybrid (CN7 HEV), Sonata Hybrid (DN8 HEV), and Tucson Hybrid (NX4 HEV) vehicles may exhibit a warning light due to DTC Code P1BB20 (12V Lithium Battery Cell Voltage High). The California Air Resources Board has determined that these vehicles may be releasing air pollutants which exceed Federal and California standards.
25-01-010H-1 TSB
Service Campaign
This bulletin provides the procedure to update the software for the Battery Management System (BMS) on certain Elantra Hybrid (CN7 HEV), Sonata Hybrid (DN8 HEV), and Tucson Hybrid (NX4 HEV) vehicles that may exhibit a warning light with DTC P1BB200 and enter Limp Mode.
25-01-045H TSB
Service Campaign
A software update is available for multiple vehicles equipped with either Display Audio 2.0V or the AVN 5th Gen Wide system.
25-EM-002H TSB
Service Bulletin/Repair Instructions
Certain 2020-2022MY Tucson Hybrid and Santa Fe Hybrid vehicles equipped with the 1.6T-GDI Gamma II HEV engine may experience an engine oil leak originating from the Continuous Variable Valve Duration (CVVD) Actuator Oil Seal. Follow the service procedure below to replace the CVVD Oil Seal.
MSLA Reference OL
Other
This letter communication is to educate owners around the use of the Manual Speed Limit Assist (MSLA) feature.
25-BE-002H TSB
Service Bulletin/Repair Instructions
This bulletin provides information related to the changes introduced in the 2024 2nd Navigation Map and Software Update. The changes may vary depending on vehicle type, model, and navigation system. Refer to the 2024 2nd Navigation Map and Software Update Improvements section in this TSB for a list of specific changes. The software can be downloaded via Navigation Updater (NAU) and updated by USB. The NAU website is https://update.hyundai.com/US/EN/navigationUpdate. For certain models equipped with a relevant Bluelink package, the software may be downloaded and applied via OTA update.
MSLA_Reference
Other
This email communication is to educate owners around the use of the Manual Speed Limit Assist (MSLA) feature.
25-01-024H-1 TSB
Service Campaign
Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an irregular disconnection on Verizon’s communication network. Follow the procedure in this TSB to reestablish the connection via the AVN pinhole reset method.
25-01-024H EM
Service Campaign
Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an irregular disconnection on Verizon's communication network. If you are experiencing issues with remote commands, or other Bluelink services, please see the instructions below to reestablish the connection via the AVN pinhole reset method.
25-01-024H TSB
Service Campaign
Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an irregular disconnection on Verizon’s communication network. Follow the procedure in this TSB to reestablish the connection via the AVN pinhole reset method.
25-01-010H DN
Service Bulletin/Repair Instructions
Certain Elantra hybrid (CN7 HEV), Sonata hybrid (DN8 HEV), and Tucson hybrid (NX4 HEV) vehicles may exhibit a warning light due to DTC Code P1BB20 (12V Lithium Battery Cell Voltage High). Follow the procedure in TSB 25-01-010H (or latest version) to perform the update the Battery management System (BMS) software.
25-01-010H TSB
Service Campaign
This bulletin provides the procedure to update the software for the Battery Management System (BMS) on certain Elantra Hybrid (CN7 HEV), Sonata Hybrid (DN8 HEV), and Tucson Hybrid (NX4 HEV) vehicles that may exhibit a warning light with DTC P1BB20.
24-01-045H-2
Service Campaign
A software update is available for multiple vehicles equipped with either Display Audio 2.0V or the AVN 5th Gen Wide system.
24-01-045H-1
Service Campaign
A software update is available for multiple vehicles equipped with either Display Audio 2.0V or the AVN 5th Gen Wide system.
SERVICE CAMPAIGN 9B4
Service Bulletin/Repair Instructions
This bulletin provides the procedure to update the software for the Battery Management System (BMS) on certain Elantra Hybrid (CN7 HEV), Sonata Hybrid (DN8 HEV), and Tucson Hybrid (NX4 HEV) vehicles that may exhibit a warning light with DTC P1BB20.
24-01-045H
Service Bulletin/Repair Instructions
A software update is available for multiple vehicles equipped with either Display Audio 2.0V or the AVN 5th Gen Wide system.
24-AT-002H
Service Bulletin/Repair Instructions
This TSB provides a procedure to diagnose and replace, if necessary, an automatic transmission with Incorrect Ratio DTC (transmission clutch slip in gear above limit) listed on Page 2.
24-BD-001H
Service Bulletin/Repair Instructions
This bulletin contains information about the proper removal of the windshield wiper blade protective cover on all models. If the protective cover is not removed correctly, there is a possibility of the rubber insert and rail spring becoming partially separated on the inner side of the wiper blade, which could lead to poor wiping performance and/or possible scratching of the windshield glass. Follow the procedure in this bulletin to properly remove the windshield wiper blade protective cover on all new wiper blades.
24-01-009H
Service Bulletin/Repair Instructions
This bulletin provides the service procedure to: 1) Upgrade the IBU/BCM (Integrated Body Control Unit/Body Control Module) to revise the OEM Hyundai burglar alarm system operation and ignition start logic and 2) Install two anti-theft decals for the front windows. Additional decals may also be installed in the rear windows at customerâs discretion.
23-AT-006H-2
Service Bulletin/Repair Instructions
This TSB provides information to diagnose the push button shifter operation.
23-EM-005H
Service Bulletin/Repair Instructions
This bulletin provides important checkpoint guidelines when performing engine oil and filter change services.
23-EE-010H
Service Bulletin/Repair Instructions
This bulletin is issued to provide the extended battery diagnosis procedure using GDS-M. This battery diagnosis function displays the various battery-related faults such as: ⢠Internal short circuit ⢠Battery deterioration ⢠Malfunction of electronic parts ⢠Insufficient battery charge ⢠Normal battery ⢠Charging defect Battery diagnosis uses the battery sensor history saved for the last 30 days and ICU diagnostic communication to track battery state of charge (SOC) and current parasitic draw history.
23-AT-008H-1
Service Bulletin/Repair Instructions
If you are servicing an 8-speed front-wheel-drive vehicle equipped with automatic transaxle with one or more of the DTC or symptoms listed below, refer to the Service Procedure to diagnose the condition. ⢠DIAGNOSTIC TROUBLE CODES: ⢠P070500 - Transmission range sensor circuit malfunction ⢠P070512 - Transmission range sensor circuit malfunction ⢠P070514 - Transmission range sensor circuit malfunction ⢠P07051C - Transmission range sensor circuit malfunction ⢠P070600 - Transmission range sensor circuit range/performance ⢠P070661 - Transmission range sensor circuit range/performance ⢠P070696 - Transmission range sensor circuit range/performance ⢠SYMPTOMS: ⢠Malfunction Indicator Light (MIL) illuminated ⢠5th gear fail-safe ⢠Intermittently wonât shift into D or R ⢠Intermittently wonât shift out of Park ⢠Intermittent ly no engine cr ank/n o start in âPâ or âNâ with or without MIL or DTC.
23-AT-014H
Service Bulletin/Repair Instructions
The Shift-By-Wire (SBW) buttons have been made available as separate service parts for the SBW lever. If replacement of the SBW button is required due to one or more button plating peeling, replace the button(s) with a new one. Do not replace the complete SBW lever.
23-AT-006H-1
Service Bulletin/Repair Instructions
This TSB provides information to diagnose the push button shifter operation. If you are servicing a vehicle with any symptoms listed below or DTCs (listed on Page 2) , follow the Service Procedure on Page 3. SYMPTOMS: ⢠âShifter System Malfunctionâ displayed in the cluster ⢠Wonât shift into or out of gear or wonât shift out of Park ⢠Incorrect gear display in cluster and/or wonât start
23-01-052H-1
Service Bulletin/Repair Instructions
This bulletin provides information related to the cleaning of the cooling system and coolant change to address the following problem: ⢠âRefill Inverter Coolantâ warning light displayed on the cluster ⢠No DTCâs present ⢠Normal level of coolant in Inverter Reservoir Tank ⢠Measured EWP Speed > 2,800 RPM The cause of the warning light is due to increased EWP Speed due to poor flow of coolant inside the cooling circuit. The coolant in the system will be discharged and any foreign substances in the circuit will be flushed out with new coolant added in the end. A new reservoir cap label will be added.
23-AT-008H
Service Bulletin/Repair Instructions
If you are servicing an 8-speed front-wheel-drive vehicle equipped with automatic transaxle with one or more of the DTC or symptoms listed below, refer to the Service Procedure to diagnose the condition.
23-01-051H-1
Service Bulletin/Repair Instructions
This bulletin provides information related to the cleaning of the cooling system and coolant change to address the following problem: ï· âRefill Inverter Coolantâ warning light displayed on the cluster ï· No DTCâs present ï· Normal level of coolant in Inverter Reservoir Tank ï· Measured EWP Speed > 2,800 RPM
23-01-052H
Service Bulletin/Repair Instructions
This bulletin provides information related to the cleaning of the cooling system and coolant change to address the following problem: ⢠âRefill Inverter Coolantâ warning light displayed on the cluster ⢠No DTCâs present ⢠Normal level of coolant in Inverter Reservoir Tank ⢠Measured EWP Speed > 2,800 RPM The cause of the warning light is due to increased EWP Speed due to poor flow of coolant inside the cooling circuit. The coolant in the system will be discharged and any foreign substances in the circuit will be flushed out with new coolant added in the end. A new reservoir cap label will be added.
23-01-048H
Service Bulletin/Repair Instructions
This bulletin provides information related to the replacement of the Ownerâs Manual with a new version which contains correct information regarding the coolant used in the cooling system.
23-BD-007H
Service Bulletin/Repair Instructions
Hyundai applies a Paint Protection Film (PPF) on new vehicles before delivery to dealerships. It provides a barrier between the paint and contaminants, such as rail dust, acid rain, and industrial fallout. In rare cases, the paint can become clouded under the PPF. These spots are the result of moisture trapped between the PPF and the paint.
23-EE-002H
Service Bulletin/Repair Instructions
This bulletin provides information related to the Engine Control Module (ECM) / Hybrid Control Unit (HCU) software update for Tucson Hybrid (NX4 HEV) / Plug-in Hybrid (NX4 PHEV) vehicles to improve the following DTC and symptoms:
23-BD-002H
Service Bulletin/Repair Instructions
This bulletin provides information regarding condensation related to the accumulated moisture in the headlamp, rear combination lamp, daytime running lamp (DRL), or fog lamp. This TSB illustrates the various causes of condensation inside the lamp assembly. Lamp assembly replacement is NOT necessary in most cases. This condition can be eliminated by turning on the lamps with the engine running for several minutes or during normal driving operation.
22-AT-010H
Service Bulletin/Repair Instructions
If you are servicing an applicable vehicle with a âCheck Engineâ light on and one or more of the DTC listed below, follow the Service Procedure and replace the valve body internal harness and the input/output speed sensor.
22-HC-002H
Service Bulletin/Repair Instructions
This bulletin addresses a warning light âÂÂRefill Inverter Coolantâ displayed on the instrument cluster, but inspection of the under hood blue coolant reservoir is found to be at normal level (not below âÂÂMINâ marking on the reservoir bottle). This may be caused by poor flow of antifreeze inside the low-conductivity coolant pipe from internal debris, resulting in unusual high EWP operation being detected. Follow the procedure outlined in this bulletin to flush/discharge debris from the cooling system and replace the blue coolant. To effectively resolve, the flushing must be performed section by section as instructed. After flushing of the cooling system is done, updated BSC-2 coolant will be installed.
22-EM-010H
Service Bulletin/Repair Instructions
Follow the guidelines outlined in this bulletin to inspect and clean or replace certain components of the engine intake system accordingly during engine short block or sub-assembly replacement.
22-GI-006H
Service Bulletin/Repair Instructions
Effective June 2, 2008, Federal Motor Vehicle Safety Standard 110 (FMVSS 110) established a threshold for correcting load carrying capacity information indicated on tire placards when vehicle weight has been increased before retail sale. This limit is the lesser of 1.5% of GVWR or 100 pounds. If the total added weight exceeds the lesser of the limit, a label must be added to the driver-side B-pillar within 25mm (1 inch) of the original tire placard.
22-AT-008H
Service Bulletin/Repair Instructions
If you are servicing an applicable vehicle with a âCheck Engineâ light on and one or more of the DTC listed below, follow the Service Procedure and replace the related solenoid and harness.
22-FL-003H
Service Bulletin/Repair Instructions
This bulletin provides information related to the Engine Control Module (ECM) software update for Santa Fe Hybrid (TM HEV) / Santa Fe Plug-In Hybrid (TM PHEV) and Tucson Hybrid (NX4 HEV) / Tucson Plug-In Hybrid (NX4 PHEV) vehicles to revise the following DTC logic: ⢠P1441(PCSV rear and hose missing) ⢠P1A77(HSG Belt slip) ⢠P00B7(Excessive ITM motor operating current) ⢠P2118 (ETC target position failure) ⢠P0401 (EGR gas flow insufficient) ⢠P0236 (Turbocharger boost sensor range abnormal) ⢠P0299 (Turbocharger boost pressure too low)
22-BD-006H
Service Bulletin/Repair Instructions
Certain 2022MY Tucson (NX4/NX4a) and Tucson Hybrid (NX4 HEV) vehicles equipped with LED type lamps may exhibit loose license plate lamps, caused by out of specification lamp housings. This bulletin provides the procedures to repair the condition by replacing the affected license plate lamps.
Certain vehicles
Service Bulletin/Repair Instructions
If you are servicing an applicable vehicle with a âCheck Engineâ light on and one or more of the DTC listed below, follow the Service Procedure and replace the harness with an integrated oil temperature sensor.
22-01-021H
Service Bulletin/Repair Instructions
This bulletin provides information related to Lane Keep Assist (LKA) software update, logic revision for Tucson (NX4, NX4A, NX4 HEV, NX4 PHEV) vehicles. Update will reduce sensitivity of LKA warning and misrecognition of missing lanes when entering the interstate.
22-AT-001H
Service Bulletin/Repair Instructions
This TSB provides a procedure to diagnose the push button shifter operation. If you are servicing a vehicle with any symptoms or DTC listed below, follow the Service Procedure, Page 2.
21-AT-009H
Service Bulletin/Repair Instructions
This TSB provides a procedure to diagnose the push button shifter operation.
21-AT-007H
Service Bulletin/Repair Instructions
If you are servicing an 8-speed front-wheel-drive vehicle with the DTC or symptoms listed below, refer to the Service Procedure to diagnose the condition. ï· DIAGNOSTIC TROUBLE CODES: ï P070500 - Transmission range sensor circuit malfunction ï P070512 - Transmission range sensor circuit malfunction ï P070514 - Transmission range sensor circuit malfunction ï P07051C - Transmission range sensor circuit malfunction ï P070600 - Transmission range sensor circuit range/performance ï P070661 - Transmission range sensor circuit range/performance ï P070696 - Transmission range sensor circuit range/performance ï· SYMPTOMS: ï Malfunction Indicator Light (MIL) illuminated ï 5th gear fail-safe ï No gear indication in cluster ï Intermittently wonât shift into D or R ï Intermittently wonât shift out of Park ï Intermittent ly no engine cr ank/no start in âPâ or âNâ with or without MIL or DTC.
21-GI-003H
Service Bulletin/Repair Instructions
This bulletin provides information on the Launch Quality Monitoring Process (LQMP) for the 2022MY Hyundai Tucson. After a new vehicle launch, Hyundai uses the LQMP to monitor all customer and dealer activities at a minimum of 100 days. The Tucson LQMP helps improve model vehicle quality, and allows Hyundai to proactively respond to the Voice of the Customer (VOC).