2021 Genesis G80 Technical Service Bulletins

62 technical service bulletins (TSBs) are on record for the 2021 Genesis G80. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 11038692Oct 22, 2026Body and structure. 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.
• 11037286Sep 9, 2026Transmission and drivetrain. Some GV70 (JK1, JK1A), GV80 (JX1) and G80 (RG3) vehicles may have a hum or whine noise condition from the rear differential at certain speeds. This bulletin describes the procedure to inspect the vehicle for the hum or whine noise and, if necessary, to tighten the rear differential lock nut to specification. If the hum or whine noise remains after tightening the lock nut, then this bulletin provides instructions to…
• 11033845Jun 10, 2026Engine. Some Genesis vehicles (listed below) equipped with Lambda-III 3.5T-GDI engines may exhibit reduced heater performance due to engine coolant deposits clogging the heater core. This bulletin provides instructions to verify the concern and to replace the front and rear heater core (if applicable).
• 11033711May 27, 2026Electrical system. 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…
• 11031401Apr 18, 2026Engine, Electrical system. 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 (solenoid) assembly.
• 11032523Apr 10, 2026Air bags. 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…
• 11032522Apr 10, 2026Air bags. 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…
• 11030323Mar 10, 2026Lane departure, Forward collision avoidance, Exterior lighting. Some 2020MY 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.
• 11027056Dec 24, 2025Electrical system. Certain vehicles equipped with Premium Gen6 Navigation head units may exhibit issues with Genesis Connected Services, navigation, voice recognition, and Bluetooth functionality. In some cases, the home screen may display applications not intended for the U.S. market. This TSB provides the procedure to update the Premium Gen6 Navigation software to address these conditions.
• 11025550Nov 13, 2025Engine. This notice is being sent to you as our records indicate you may have previously received an important Service Campaign notice for Genesis Campaign Number 914G.
• 11025476Nov 6, 2025Exterior lighting. 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…
• 11023693Sep 30, 2025Electrical system. 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.
• 11023409Sep 24, 2025Steering. Some vehicles may exhibit a rubbing type noise when turning the steering wheel. Follow the procedure in this TSB to inspect the source of the noise and, if necessary, replace the Steering Shaft Dust Cover.
• 11023246Sep 20, 2025Engine. Genesis has become aware that some vehicles may illuminate the Check Engine Light indicator as a result of detected engine misfires.
• 11021791Aug 6, 2025Engine. Certain G80 (RG3), GV70 (JK1/JK1A), and GV80 (JX1) vehicles equipped with Theta III 2.5L T-GDI engines may illuminate the Check Engine Light as a result of misfire DTCs P0300, P0301, P0302, P0303, or P0304 during cold start. This bulletin provides instructions for updating the Engine Control Module (ECM).
• 11021790Aug 6, 2025Engine. Certain G80 (RG3), GV70 (JK1/JK1A), and GV80 (JX1) vehicles equipped with Theta III 2.5L T-GDI engine may illuminate the Check Engine Light as a result of misfire DTCs P0300, P0301, P0302, P0303, or P0304. The California Air Resources Board has determined that these vehicles may be releasing air pollutants which exceed Federal and California standards.
• 11020939Jul 22, 2025Other or unknown. Certain Genesis vehicles may experience insufficient cooling in the cabin due to leakage at the evaporator core. This bulletin provides instructions to inspect the A/C system for leaks and replace the evaporator core, if necessary.
• 11019686Jun 18, 2025Other or unknown. Certain G80 (RG3) and G80 Electrified (RG3 EV) vehicles may have an inoperable horn due to an exposure to moisture from the horizontal mounting position. This bulletin provides instructions to replace and vertically mount the horns and add a LH extension cable for the LH horn.
• 11019055May 30, 2025Other or unknown. This bulletin provides repair information for the dark chrome trim when stains are present. Some stains may occur from hard water or cleaning chemicals used during a car wash. Follow the procedures below to replace the affected dark chrome moldings.
• 11018882May 16, 2025Electrical system. 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 and updated by USB. The NAU website is…
• 11018581May 8, 2025Electrical system. Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Connected Car Services functions. This may be due to an irregular disconnection on Verizon’s communication network. Follow the procedure in this TSB to reestablish the connection by resetting the AVN unit.
• 11017471Apr 29, 2025Electrical system. Certain Genesis vehicles may experience an inoperable horn from moisture or carbonization at the contact point. This bulletin provides a guide to inspect and replace the horns.
• 11016993Apr 8, 2025Electrical system. Certain 2021-2023MY GV80 (JX1), 2022-2023MY GV70 (JK1), 2021-2023MY G80 (RG3) and 2023MY G80 Electrified (RG3 EV) vehicles may exhibit a warning light with DTC C162078 due to improper detection of steel structures. Advanced Driver Assistance System (ADAS) functions are not affected due to this condition. Follow the procedure in this bulletin to update the front radar unit and perform all related adjustments…
• 11017110Apr 7, 2025Electrical system. Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Genesis Connected Service functions. This may be due to an irregular disconnection on Verizon's communication network.
• 11015937Mar 18, 2025Electrical system. Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Connected Car Services functions. This may be due to an irregular disconnection on Verizon’s communication network. Follow the procedure in this TSB to reestablish the connection by resetting the AVN unit.
• 11013238Jan 28, 2025Other or unknown. This procedure provides repair information for the dark chrome trim when stains are present. Some stains may occur from hard water or cleaning chemicals used during a car wash. Follow the procedures below to replace the affected dark chrome moldings.
• 11009768Oct 31, 2024Transmission and drivetrain. Certain GV70 (JK1, JK1A), GV80 (JX1) and G80 (RG3) vehicles may have a hum or whine noise condition from the rear differential at certain speeds. This bulletin describes the procedure to inspect the vehicle for the hum or whine noise and if necessary to tighten the rear differential lock nut first. If the hum or whine noise remains, then replace the rear differential or other driveline components as necessary.
• 11009411Oct 24, 2024Other or unknown. Certain Genesis vehicles (listed below) equipped with Lambda-III 3.5T-GDI engines may exhibit reduced heater performance due to engine coolant deposits clogging the heater core. This bulletin provides instructions to verify the concern and to replace the front and rear heater core (if applicable).
• 11008005Sep 12, 2024Electrical system. This message provides instructions for vehicles experiencing an incomplete Over-The-Air (“OTA”) AVN software update.
• 11007468Sep 7, 2024Electrical system. Genesis has become aware that some vehicles may experience an incomplete Over-The-Air (“OTA”) AVN software update.
• 11006825Aug 12, 2024Wheels. This bulletin provides information to inspect and replace the front or rear wheel bearing hub assemblies for all Genesis vehicles. This procedure is applicable when noise (whirring, roaring, grinding, rumbling, etc.) is present which gets louder when driving with more speed.
• 11002757Jun 13, 2024Electrical system. Certain G80 (RG3), GV70 (JK1), GV70 Electrified (JK1A EV), and GV80 (JX1) vehicles equipped with the AVN 6th Gen system may experience an incomplete OTA update. Follow the procedures in this bulletin to check whether the OTA update completed and, if not, update the AVN 6th Gen system using the applicable supplied USB drive(s).
• 11000781May 10, 2024Transmission and drivetrain. Certain GV70 (JK1 and JK1A), GV80 (JX1) and G80 (RG3) vehicles may have a hum or whine noise condition from the rear differential at certain speeds. This bulletin describes the procedure to inspect the vehicle for the hum or whine noise and if necessary to tighten the rear differential lock nut first. If the hum or whine noise remains, then replace the rear differential or other driveline components as necessary.
• 10249695Jan 4, 2024Transmission and drivetrain. Certain GV70 (JK1 and JK1A), GV80 (JX1) and G80 (RG3) vehicles may have a noise condition from the rear differential at certain speeds while accelerating or decelerating. This bulletin describes the procedure to inspect the vehicle for noise and if necessary to tighten the lock nut or if necessary replace the differential.
• 10247603Dec 15, 2023Electrical system, Engine cooling. This bulletin is issued to provide the extended battery diagnosis procedure using GDS. 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…
• 10244957Oct 9, 2023Suspension. Certain GV70 (JK1 and JK1A), GV80 (JX1) and G80 (RG3) vehicles may have a noise condition from the rear differential at certain speeds while accelerating or decelerating. This bulletin describes the procedure to inspect the vehicle for noise and if necessary to tighten the lock nut or if necessary replace the differential.
• 10243320Sep 12, 2023Steering. This bulletin describes the procedure to inspect the steering universal joint dust cover for noise, and if necessary, apply grease on certain Genesis vehicles.
• 10241898Aug 30, 2023Suspension. Certain GV70 (JK1 and JK1A), GV80 (JX1) and G80 (RG3) vehicles may have a noise condition from the rear differential at certain speeds while accelerating or decelerating. This bulletin describes the procedure to inspect the vehicle for noise and if necessary to tighten the lock nut or if necessary replace the differential.
• 10241876Aug 23, 2023Visibility (wipers, defrost, mirrors). This bulletin provides instructions on how to service the panoramic sunroof on certain G80 (RG3) vehicles that experience creaking or rattling noises while driving on uneven roads.
• 10241795Aug 1, 2023Body and structure, Equipment. This bulletin provides information to address difficultly with opening of the center console armrest storage on certain G80 (RG3) vehicles. The foam pad attached to the release button may interfere with its normal opening function. Follow the procedure in this bulletin to remove the foam pad and allow for easier opening of the center console armrest storage.
• 10238384Jun 20, 2023Transmission and drivetrain. When servicing an 8-speed automatic transmission vehicle with a “Check Engine light” and any of the DTCs listed below, follow the Service Procedure and, if necessary, replace the E-module.
• 10235566Apr 24, 2023Body and structure. 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.
• 10235565Apr 24, 2023Steering. This bulletin describes the procedure to inspect the steering universal joint dust cover for noise, and if necessary, apply grease on certain Genesis vehicles.
• 10233543Mar 20, 2023Engine cooling. When servicing a vehicle with a “Check Engine light” and any of the DTCs listed below, follow the Service Procedure to replace the related solenoid and E-module or park position switch.
• 10230903Jan 30, 2023Visibility (wipers, defrost, mirrors). 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.
• 10217307Jul 22, 2022Engine cooling. Certain 2021-2022MY Genesis G80 (RG3) vehicles may have coolant leakage from the radiator reservoir tank. Follow the procedure outlined in this bulletin to inspect the radiator reservoir tank, and if necessary, replace it with a new part.
• 10253054Feb 16, 2022Fuel system. This bulletin provides information related to the ECM(Engine Control Module) software update for 3.5L GDI engine equipped vehicles that experience check engine light, no drivability issue, and with either of the following DTC found stored in the ECM: • P2096 - Post Catalyst Fuel Trim - System Too Lean (Bank 1). • P2098 - Post Catalyst Fuel Trim - System Too Lean (Bank 2).
• 10253021Jan 18, 2022Electrical system. This bulletin describes the procedure to replace the AMP ground side coil and coil and capacitor for certain vehicles exhibiting brown foam discoloration of the sponge pad in the rear glass antenna.
• 10253048Aug 17, 2021Transmission and drivetrain. This TSB provides a procedure to diagnose and repair a transmission for the following Incorrect Ratio DTC (transmission clutch slipping more than 200 rpm in gear).
• 10253019Aug 12, 2021Engine cooling. Certain 2021MY Genesis G80 (RG3) vehicles may have coolant leakage from the radiator reservoir tank. Follow the procedure outlined in this bulletin to inspect the radiator reservoir tank, and if necessary, replace it with a new part.

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