2021 Hyundai Sonata Hybrid technical service bulletins
51 technical service bulletins and manufacturer communications cover the 2021 Hyundai Sonata Hybrid.
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- This bulletin provides information related to the navigation and head unit software changes introduced in...
- Higher-than-expected engine oil consumption
- Higher-than-expected engine oil consumption
- The federal safety agency has issued an urgent safety advisory regarding dangerous, counterfeit...
- The federal safety agency has identified the presence of substandard and dangerous driver’s-side airbag...
- Warning lamp for DTC P218100 (Cooling System Performance) related to the Integrated Thermal-Management...
- This bulletin provides information regarding condensation related to the accumulated moisture in the...
- This bulletin provides information related to the changes introduced in the 2025 1st Navigation Map and...
- Warning light with Diagnostic Trouble Code (“DTC”) P1BB20 due to a battery over voltage condition.
- This bulletin provides the procedure to update the software for the Battery Management System (BMS) on...
- Warning light due to DTC Code P1BB20 (12V Lithium Battery Cell Voltage High)
- This bulletin provides information related to the changes introduced in the 2024 2nd Navigation Map and...
- Loss of connectivity or interruptions in the middle of using Bluelink Service functions
- Loss of connectivity or interruptions in the middle of using Bluelink Service functions
- This bulletin provides the procedure to update the software for the Battery Management System (BMS) on...
- Warning light due to DTC Code P1BB20 (12V Lithium Battery Cell Voltage High)
- This bulletin provides the procedure for updating the automatic transmission TCU (Transmission Control...
- Condition where the radio app crashes frequently when entering radio mode and/or displays a message that...
- Warning light due to DTC Code P1BB20 (12V Lithium Battery Cell Voltage High)
- This bulletin contains information about the proper removal of the windshield wiper blade protective cover...
- This bulletin provides the procedure to update the Hybrid Control Unit (HCU) and Dual Automatic...
- Condition where the radio app crashes frequently when entering radio mode and/or displays a message that...
- Coolant leakage, engine overheating, and white smoke from the exhaust due to an internal leak at the...
- This TSB provides information to diagnose the push button shifter operation.
- This bulletin provides important checkpoint guidelines when performing engine oil and filter change services.
- This bulletin provides information related to the Engine Control Module (ECM) software update and coolant...
- This TSB provides information to diagnose the push button shifter operation
- This Service Information bulletin provides information on how to update the Apple Carplay software from...
- Hyundai applies a Paint Protection Film (PPF) on new vehicles before delivery to dealerships
- If you are servicing an applicable vehicle with a “Check Engine” light on and one or more of the DTC...
- Follow the guidelines outlined in
- Effective June 2, 2008, Federal Motor Vehicle Safety Standard 110 (FMVSS 110) established a threshold for...
- If you are servicing an applicable vehicle with a “Check Engine” light on and one or more of the DTC...
- Bearing noise within the Motor Driven Power Steering (MDPS) column worm shaft assembly
- If you are servicing an applicable vehicle with a “Check Engine” light on and one or more of the DTC...
- This TSB provides a procedure to diagnose the push button shifter operation
- Bearing noise within the Motor Driven Power Steering (MDPS) column worm shaft assembly
- This TSB provides a procedure to diagnose the push button shifter operation.
- If you are servicing an 8-speed front-wheel-drive vehicle with the DTC or symptoms listed below, refer to...
- This bulletin describes the procedure to update the Shift Control Unit (SCU) for Shift-by-Wire vehicles...
- This bulletin provides the service procedure for engine connecting rod bearing clearance testing
- This bulletin provides best practice recommendations when performing brake service procedures.
- This bulletin provides the inspection procedure and repair guidelines for certain vehicles listed below.
- This bulletin describes the procedure to update the radio software to help reduce the disconnection...
- When using Wireless CarPlay, the system may intermittently auto disconnect
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