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.
Z14 OL
Warranty Program/Extension
Certain 2022 – 2024 model year IONIQ 5, 2024 model year IONIQ 5 Robotaxi, and 2023 – 2025 model year IONIQ 6 vehicles may require a replacement of the Integrated Charging Control Unit (ICCU) and ICCU Fuse. At Hyundai, we are committed to providing vehicles of outstanding quality and value. In an effort to meet this commitment, the warranty coverage for the Integrated Charging Control Unit (ICCU) and ICCU Fuse Replacement has been extended to 15 years/ 180,000 miles from the date of original retail delivery or date of first use (whichever occurs first) and is valid for original and subsequent owners.
26-GI-002H TSB
Service Bulletin/Repair Instructions
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 to the 2026 1st Navigation Map and Software Update Key Improvements and Additional Improvements tables in this TSB for a list of specific changes. The software can be downloaded via Navigation Updater (NAU) and updated by USB.
26-EV-004H DCS
Warranty Program/Extension
Hyundai is extending the warranty coverage for the Integrated Charging Control Unit (ICCU) and ICCU fuse to 15 years/180,000 miles from the date of original retail delivery or date of first use (whichever occurs first) and is valid for original and subsequent owners. Follow the flowchart in Technical Service Bulletin (TSB) 26-BE-010H to check for an active or stored occurrence of any Diagnostic Trouble Code (DTC) that requires replacement of the ICCU and replace the ICCU and ICCU fuse if necessary. Some vehicles may have an active DTC that requires ICCU replacement. Please note that any vehicles under 15 years/180,000 miles are covered by this TSB, even if vehicle is within High Voltage Warranty of 10 years/120,000 miles.
26-EV-004H DN
Warranty Program/Extension
Hyundai is extending the warranty coverage for the Integrated Charging Control Unit (ICCU) and ICCU fuse to 15 years/180,000 miles from the date of original retail delivery or date of first use (whichever occurs first) and is valid for original and subsequent owners.
26-EV-004H TSB
Warranty Program/Extension
Hyundai is extending the warranty coverage for the Integrated Charging Control Unit (ICCU) and ICCU fuse to 15 years/180,000 miles from the date of original retail delivery or date of first use (whichever occurs first) and is valid for original and subsequent owners. Follow the flowchart in this bulletin to check for an active or stored occurrence of any Diagnostic Trouble Code (DTC) that requires replacement of the ICCU and replace the ICCU and ICCU fuse if necessary. Some vehicles may have an active DTC that requires ICCU replacement.
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-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-EV-003H TSB
Service Bulletin/Repair Instructions
Certain IONIQ 5 (NE EV), IONIQ 6 (CE EV), and IONIQ 5 N (NE EV N) vehicles may have missing Inlet 5-Pin Combo DC insulation caps (DC pin caps) which may lead to damage to the charge port if not replaced. This bulletin provides instructions to replace the DC pin cap(s).
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.
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.
24-BD-012H-1
Service Bulletin/Repair Instructions
Certain IONIQ 5 (NE EV) and IONIQ 5 N (NE EV N) vehicles may exhibit rattle and friction noises from the tailgate while driving. This bulletin provides instructions to adjust the gap between the tailgate and vehicle body to eliminate the rattle and friction noise.
24-BD-009H
Service Bulletin/Repair Instructions
Certain IONIQ 5 (NE1) vehicles may exhibit lifting/separation on the spoiler molding(s) by the Center High Mount Stop Lamp (CHMSL). This bulletin provides instructions to replace the molding(s) on the spoiler.
24-01-088H
Service Campaign
Certain 2022-2024MY IONIQ 5 (NE EV) and 2023-2025MY IONIQ 6 (CE EV) vehicles may exhibit a condition while driving where the 12V battery voltage drops below the operational voltage and the Vehicle Control Unit (VCU) places the vehicle in “fail-safe” mode. The VCU software in this bulletin updates the maximum vehicle speeds for various levels of 12V battery voltage when the vehicle enters “fail-safe” mode.
24-BD-012H
Service Bulletin/Repair Instructions
Certain IONIQ 5 (NE EV) vehicles may exhibit rattle and friction noises from the tailgate while driving. This bulletin provides instructions to adjust the gap between the tailgate and vehicle body to eliminate the rattle and friction noise.
24-01-051H-1
Service Campaign
Certain 2022-2024MY IONIQ 5 (NE1), 2023-2024MY IONIQ 6 (CE1) and 2024-2025MY Kona Electric (SX2 EV) vehicles may exhibit a condition while charging with a 240V AC (Level 2) charger where the vehicle experiences an interrupted charging session or a lower charging speed. This occurs to prevent potential damage to the charging cable connection. Follow the procedure in this TSB to update the software logic for the Vehicle Charging Management System (VCMS), which initiates a self-restart that allows the vehicle charging to return to full capacity once stabilized.
24-BE-001H-1
Service Bulletin/Repair Instructions
Some vehicles equipped with the AVN 5th Gen Wide system may exhibit a condition where the radio app crashes frequently when entering radio mode and/or displays a message that reads “Uneven Road Ahead, Drive carefully” on the cluster along with a warning sound. Follow the procedure outlined in this bulletin to update the AVN software to resolve this condition.
24-EV-004H
Service Bulletin/Repair Instructions
This bulletin provides important special service instructions to properly repair a vehicle that has been diagnosed to require an Integrated Charge Control Unit (ICCU) replacement, such as required for DTC P1A9096 DC to DC related charging concern or for inoperative AC charging. • The ICCU fuse accessible from a rear side panel of the EV Battery, should NEVER be replaced by itself prior to receiving an ICCU replacement part. • The ICCU fuse should be replaced at the same time as replacing the ICCU part. o The ICCU fuse function is to protect the EV Battery from a damaged ICCU. o DTC P1B77 Power Relay Assy (PRA) damage in the EV Battery can occur when an ICCU fuse is first replaced without also replacing the ICCU together. o Vehicles with P1B77 require Techline approval for field staff involved EV Battery repair and can result in significant additional delay for customers. o Wait to receive ICCU replacement part first before also replacing the ICCU fuse on the rear side of the EV battery. This bulletin also covers how to handle a situation when the nut(s) at the rear of the ICCU fuse falls back into the battery.
24-01-051H
Service Campaign
Certain 2022-2024MY IONIQ 5 (NE1) and 2023-2024MY IONIQ 6 (CE1) vehicles may exhibit a condition while charging with a 240V AC (Level 2) charger where the vehicle experiences an interrupted charging session or a lower charging speed. This occurs to prevent potential damage to the charging cable connection. Follow the procedure in this TSB to update the software logic for the Vehicle Charging Management System (VCMS), which initiates a self-restart that allows the vehicle charging to return to full capacity once stabilized.
24-BD-006H
Service Bulletin/Repair Instructions
This bulletin describes the procedure to repair a front driverâs seat that exhibits minor play while the vehicle is accelerating and/or braking. The repair procedure involves replacing the seat track bolts and washers and initializing the power seat module. This procedure is only applicable for power seats equipped with the driver position memory function.
24-EV-003H
Service Bulletin/Repair Instructions
Certain 2022-2024 MY IONIQ 5 (NE1) and 2023MY IONIQ 6 (CE1) may have a condition of the power down warning light (turtle symbol) with "Power is limited" displayed in the cluster, and possible DTC P0A2F. If you are servicing a vehicle with either of these conditions, follow this bulletin to inspect the EOP.
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-BE-001H
Service Bulletin/Repair Instructions
Some vehicles equipped with the AVN 5th Gen Wide system may exhibit a condition where the radio app crashes frequently when entering radio mode and/or displays a message that reads âUneven Road Ahead, Drive carefullyâ on the cluster along with a warning sound. Follow the procedure outlined in this bulletin to update the AVN software to resolve this condition.
23-EM-005H
Service Bulletin/Repair Instructions
This bulletin provides important checkpoint guidelines when performing engine oil and filter change services.
23-01-067H-1
Service Bulletin/Repair Instructions
Updated Vehicle Control Unit (VCU) software relating to the brake light logic for regenerative braking on certain IONIQ 5 Electric (NE1) & IONIQ 6 (CE1) vehicles is now available to improve the vehicleâs system logic and performance. An âOwnerâs Manual Supplementâ leaflet is also to be provided to 2022MY IONIQ 5 vehicle customers to explain the change & application of the Electronic Parking Brake (EPB) system of their vehicle.
23-BD-006H-1
Service Bulletin/Repair Instructions
This bulletin describes the procedure to repair a tailgate that exhibits a rattle noise while driving. The repair procedure involves installation of washer pads to the side guide bumpers and adjustment of the tailgate striker.
23-01-075H
Service Bulletin/Repair Instructions
This bulletin provides information on replacement of the Active Air Flap (AAF) actuator on 2022MY Ioniq 5 (NE1) vehicles that may exhibit AAF warning signs and DTC U028400 while driving. The AAF may not open or close when the DTC U028400 is active due to unstable power supply to the actuator. Follow the procedure in this bulletin to replace the AAF actuator and erase the DTC code.
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.
23-01-066H
Service Bulletin/Repair Instructions
Some 2022MY Ioniq 5 (NE1) vehicles may experience an inoperative front left (driver) power seat due to interference to the power seat switch wiring harness. This bulletin provides the service procedure to replace the front LH power seat switch and revise the wiring for the connector.
23-EV-006H
Service Bulletin/Repair Instructions
This bulletin provides service information on how to inspect the charging port and if needed, replace any missing/damaged insulation cap(s) at the charging port on certain 2022-2023MY Ioniq 5 (NE1) and 2023MY (CE1) . The charging insulation caps are important to ensure proper charger connector orientation and fit to the vehicle charge port.
23-01-067H
Service Bulletin/Repair Instructions
This updated Vehicle Control Unit (VCU) software package includes the following: ⢠Brake light logic update for regenerative braking. ⢠Enhance i-Pedal mode operation. ⢠EPB (Electronic Parking Brake) auto engagement when shift into Park/auto disengagement shift out of Park when shifting to D or R while brake pedal is engaged. ⢠DTE (Distance to Empty) strategy. ⢠Snow road surface performance. ⢠Air conditioning performance during AC slow charging. ⢠Enhance charging sequence. An âOwnerâs Manual Supplementâ leaflet is to be provided to 2022MY vehicle customers to explain the change to the Electronic Parking Brake (EPB) system. (NOTE: 2023MY vehicle Ownerâs Manual already contains the EPB supplement content).
23-HA-002H
Service Bulletin/Repair Instructions
Certain IONIQ 5 (NE1) vehicles may experience an inoperative heater or air conditioning with one or more HVAC system related DTCs B169588, B160C88, and/or B183088. To correct this condition, follow the inspection diagnostics and repair procedure outlined in this bulletin.
23-01-060H
Service Bulletin/Repair Instructions
Certain 2022-2023MY IONIQ 5 (NE1) and 2023MY IONIQ 6 (CE1) vehicles may exhibit a condition where low 12V auxiliary battery charging occurs due to an ICCU (Intelligent Charging Control Unit) fault which may set the following DTC P1A9096 â âDC/DC Converter Input Voltage Sensor Faultâ. When a fault occurs, the vehicle may enter a reduced power mode while various warning lights, an audible chime will sound, and large messaging in the vehicleâs instrument cluster will appear, instructing the driver to stop the vehicle. The vehicle will be inspected for a DTC P1A9096 and may require either an ICCU software update or ICCU replacement and potential fuse replacement (if fuse is blown when inspected).
23-01-017H-1
Service Bulletin/Repair Instructions
This bulletin provides the information to inspect and add the Battery Conditioning function as necessary. Some late 2022MY vehicles may already have the function. The Battery Conditioning function optimizes the DC charging performance of the EV battery when the temperature of the battery is below 68°F (20°C). This function allows the EV battery to preheat prior to arriving at a DC charger site. Once software has been updated, it requires the owner of the vehicle to select a DC charger site as a POI (point of interest) in the vehicleâs navigation system to enable the battery conditioning heating when EV battery is below 68°F. Battery heating impact on DC charging will vary depending on the initial battery temperature and the estimated time to arrive at the POI. If it is possible to enable battery conditioning for longer time prior to departure, it can help to achieve the longer battery heating time needed at very low temperatures, but will temporarily reduce range. Enabling the battery conditioning will use battery power and temporarily reduce the driving range until charging.
23-01-039H
Service Bulletin/Repair Instructions
This bulletin applies the following continuous improvements from a Vehicle Control Unit (VCU) Software Update. An âOwnerâs Manual Supplementâ leaflet is to be provided to 2022MY vehicle customers to explain the change it makes to the Electronic Parking Brake (EPB) system. (NOTE: 2023MY vehicle Ownerâs Manual already contains the EPB supplement content). ⢠Enhance i-Pedal mode operation. ⢠EPB (Electronic Parking Brake) auto engagement when shift into Park/auto disengagement shift out of Park when shifting to D or R while brake pedal is engaged. ⢠DTE (Distance to Empty) strategy. ⢠Snow road surface performance. ⢠Air conditioning performance during AC slow charging. ⢠Enhance charging sequence.
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-BD-006H
Service Bulletin/Repair Instructions
This bulletin describes the procedure to repair a tailgate that exhibits a rattle noise while driving. The repair procedure involves installation of washer pads to the side guide bumpers and adjustment of the tailgate striker.
23-01-017H
Service Bulletin/Repair Instructions
This bulletin provides the information to inspect and add the Battery Conditioning function as necessary. Some late 2022MY vehicles may already have the function. The Battery Conditioning function optimizes the DC charging performance of the EV battery when the temperature of the battery is below 68°F (20°C). This function allows the EV battery to preheat prior to arriving at a DC charger site. Once software has been updated, it requires the owner of the vehicle to select a DC charger site as a POI (point of interest) in the vehicleâs navigation system to enable the battery conditioning heating when EV battery is below 68°F. Battery heating impact on DC charging will vary depending on the initial battery temperature and the estimated time to arrive at the POI. If it is possible to enable battery conditioning for longer time prior to departure, it can help to achieve the longer battery heating time needed at very low temperatures, but will temporarily reduce range. Enabling the battery conditioning will use battery power and temporarily reduce the driving range until charging.
23-EV-002H
Service Bulletin/Repair Instructions
If you are servicing a 2022-2023 IONIQ 5 AWD vehicle with drivability concerns in ECO Mode follow this bulletin for updating the software of the Vehicle Control Unit (VCU) for improved drivability.
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.
22-01-094H
Service Bulletin/Repair Instructions
This bulletin provides the information to inspect and add the Battery Conditioning function as necessary. Some late 2022MY vehicles may already have the function. The Battery Conditioning function may optimize the charging performance of the EV battery DC when the temperature of the battery is below 68°F (20°C). This function allows the EV battery to preheat prior to arriving at a DC charger site. Once software has been updated, it requires the owner of the vehicle to select a DC charger site as a POI (point of interest) in the vehicleâs navigation system to enable the battery conditioning heating when EV battery is below 68°F. Battery heating impact on DC charging will vary depending on the initial battery temperature and the estimated time to arrive at the POI. If it is possible to enable battery conditioning for longer time prior to departure, it can help to achieve the longer battery heating time needed at very low temperatures, but will temporarily reduce range. Enabling the battery conditioning will use battery power and temporarily reduce the driving range until charging.
22-ST-008H
Service Bulletin/Repair Instructions
Certain 2022MY Ioniq 5 (NE1) vehicles may exhibit an abnormal noise while turning the steering wheel. This bulletin describes the procedure to remedy the issue by applying grease to the multifunction switch joint of the Steering Roll Connector (SRC) rotor and the Steering Angle Sensor (SAS).
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-ST-005H
Service Bulletin/Repair Instructions
Certain vehicles may develop a bearing noise within the Motor Driven Power Steering (MDPS) column worm shaft assembly. If bearing noise is heard, follow the procedure in this bulletin to replace the worm shaft bearing.