2021 Hyundai Elantra technical service bulletins
83 technical service bulletins and manufacturer communications cover the 2021 Hyundai Elantra, including 7 warranty extensions.
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Inoperable horn
- Inoperable horn
- Inoperable horn
- Inoperable horn
- Inoperable horn
- This bulletin provides information related to the navigation and head unit software changes introduced in...
- Some Hyundai vehicles may be equipped with a parking distance warning (PDW) sensor(s) that may trigger...
- Higher-than-expected engine oil consumption
- Higher-than-expected engine oil consumption
- Difficulty starting in cold weather
- 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...
- Certain warning lights and trigger DTC C272246 fault code for the front camera
- In response to this trend, we engineered a software upgrade that addresses the social media theft method...
- Warning lamp for DTC P218100 (Cooling System Performance) related to the Integrated Thermal-Management...
- This bulletin provides the service procedure for installation of a key cylinder reinforcement protector...
- In addition to the Anti-Theft software provided under Service Campaign 993 (TSB 24-01-009H-1), a zinc...
- Upon customer's request ONLY, the Technical Service Bulletin (TSB) 25-01-089H provides the service...
- 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...
- Thudding noise coming from the fuel tank assembly at idle or on an incline when the PCSV (Purge Control...
- 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
- Following conditions: • Lack of airflow coming from the forward-facing center vents • Mode actuator not...
- Condition where the radio app crashes frequently when entering radio mode and/or displays a message that...
- A class settlement against Hyundai Motor America (“HMA”) that had alleged that certain 2011 – 2022 model...
- Warning light with DTC C1620, caused by a distorted signal due to internal contamination of the front...
- This bulletin contains the software update procedure for the Engine Control Unit (ECU) on certain...
- This bulletin contains information about the proper removal of the windshield wiper blade protective cover...
- Hyundai has launched an anti-theft software upgrade and window decal campaign (Campaign 993), combined...
- This bulletin provides the service procedure to: 1) Upgrade the IBU/BCM (Integrated Body Control Unit/Body...
- Condition where the radio app crashes frequently when entering radio mode and/or displays a message that...
- Hyundai has launched an anti-theft software upgrade and window decal campaign (Campaign 993), combined...
- Certain Hyundai vehicles may not be equipped with an immobilizer
- This bulletin provides important checkpoint guidelines when performing engine oil and filter change services.
- This bulletin is issued to provide the extended battery diagnosis procedure using GDS-M. This battery...
- Check engine light or malfunction indicator light due to Diagnostic Trouble Codes (DTC) listed below
- Some models from service campaign 993 (IBU/BCM Software Update and Decals Application) equipped with the...
- 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
- Hyundai has launched an anti-theft software upgrade and window decal campaign (Campaign 993) in response...
- Certain Elantra (CN7/CN7a) vehicles equipped with the 2.0L MPI and Intelligent Variable Transmission (IVT)...
- This bulletin provides the service procedure to update the Transmission Control Unit (TCU) software for...
- Condition with multiple warning lights displayed on the instrument cluster and various symptoms; multiple...
- Follow the guidelines outlined in
- Effective June 2, 2008, Federal Motor Vehicle Safety Standard 110 (FMVSS 110) established a threshold for...
- Bearing noise within the Motor Driven Power Steering (MDPS) column worm shaft assembly
- On certain 2021 Elantra and 2022 Kona vehicles equipped with 2.0L engine, a coolant leak at the Water...
- Paint delamination on the left, right and lower moldings of the front bumper
- Abnormal shifting caused by an out of specification input shaft snap ring
- Condition with multiple warning lights displayed on the instrument cluster and various symptoms; multiple...
- On certain 2021-2022 Elantra vehicles, a coolant leak at the Water Temperature Sensor (WTS) may be...
- This bulletin provides information related to the Engine Control Module (ECM) software update for 2021MY...
- This bulletin provides information regarding the use of window mounted lockboxes without RFID shielding,...
- Some 2021 Elantra (CN7a) rear combination lamp turn signal light bulbs may prematurely become inoperative
- 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
- When using Wireless CarPlay, the system may intermittently auto disconnect
- This bulletin provides information on the Launch Quality Monitoring Process (LQMP) for the 2021MY Hyundai...
- This bulletin describes the procedure to inspect and identify fluid which may appear around the brake...
- This bulletin provides tire vibration service procedures, including how to optimize vehicle vibration...
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