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Service bulletins for the 2018 Genesis G80

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

97 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

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Bulletins, newest first
21-EM-006HG-12021-11-06. Service bulletin. ELECTRICAL SYSTEM. Certain G80 and G90 Genesis vehicles may experience DTC code P0597 for “Thermostat Heater Control Circuit/Open”. This bulletin provides information on replacing the electric thermostat. No drivability issues are associated with this condition.
21-BE-013HG2021-10-08. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE; ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:INFOTAINMENT. This bulletin describes the procedure to variant code the Genesis Sedan (DH) navigation system. A black/blank screen or black and white image may be displayed from the rear view camera after the navigation unit is replaced without performing this variant coding procedure.
21-AT-016HG2021-10-08. Service bulletin. PARKING BRAKE; POWER TRAIN. 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.
21-FL-003HG2021-08-07. Service bulletin. FUEL SYSTEM, GASOLINE. This TSB provides consolidated diagnosis and repair information, currently in the shop manual, to address DTC U0109 / U010900 related to a communication error with the Fuel Pump Control Module (FPCM).
21-EM-006HG(1)2021-05-05. Service bulletin. ENGINE AND ENGINE COOLING. Certain G80 and G90 Genesis vehicles may experience DTC code P0597 for “Thermostat Heater Control Circuit/Open”. This bulletin provides information on replacing the electric thermostat. No drivability issues are associated with this condition.
21-EM-004H2021-04-07. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. This bulletin provides the service procedure for engine connecting rod bearing clearance testing. Perform the procedure outlined in this bulletin to fulfill the Bearing Clearance Test inspection requirements to determine next required steps.
21-BR-002HG2021-04-07. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; SERVICE BRAKES. This bulletin provides best practice recommendations when performing brake service procedures.
21-01-014HG2021-04-07. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE; POWER TRAIN; EQUIPMENT. This TSB describes the procedure to update the TCU to revise the diagnosis logic for OBD communication test.
21-EM-003H2021-04-06. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. This bulletin provides the inspection procedure and repair guidelines for certain vehicles listed below.
20-SS-004HG2020-12-08. Service bulletin. WHEELS; TIRES. This bulletin provides tire vibration service procedures, including how to optimize vehicle vibration performance. For all wheel/tire balance claims, the “Tire Balance Data Sheet” must be fully completed including imbalance and Road Force Variation (RFV) data. The Data Sheet can be found at the end of this bulletin.
20-SS-004H2020-12-08. Service bulletin. WHEELS; TIRES. This bulletin provides tire vibration service procedures, including how to optimize vehicle vibration performance. For all wheel/tire balance claims, the “Tire Balance Data Sheet” must be fully completed including imbalance and Road Force Variation (RFV) data. The Data Sheet can be found at the end of this bulletin.
20-EM-003HG2020-12-08. Service bulletin. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:THERMAL MANAGEMENT:SENSOR/THERMOSTAT; EQUIPMENT ADAPTIVE/MOBILITY. Certain G80 and G90 Genesis vehicles may experience DTC code P0597 for “Thermostat Heater Control Circuit/Open”. This bulletin provides information on replacing the electric thermostat. No drivability issues are associated with this condition.
20-ST-004HG2020-11-06. Service bulletin. STEERING. This bulletin provides repair information on certain 18MY G80 (DH) vehicles equipped with a 4-bolt steering gear assembly. If a vehicle exhibits a center biased steering feel, and no DTC(s) are active in the steering system, it is recommended to replace the rack-mounted motor driven power steering (R-MDPS) assembly using the updated part numbers shown below:
20-DS-002HG2020-10-08. Service bulletin. POWER TRAIN; EQUIPMENT. The bulletin describes the procedure to measure and set propeller shaft angles to optimize driveline vibration performance on certain 2017-2018MY 3.8L AWD G80 (DH) vehicles.
20-SS-003HG2020-10-08. Service bulletin. WHEELS. This bulletin provides information on wheel cleaning procedure and cleaning agent recommendations.
20-BD-014H2020-08-07. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; EXTERIOR LIGHTING. This bulletin provides information regarding condensation related to moisture accumulation in the headlamp, rear combination lamp, daytime running lamp (DRL), or fog lamp. The 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.
20-SS-002H(1)2020-06-06. Service bulletin. WHEELS; TIRES. This bulletin provides information on tire maintenance best practices and procedures for dealers and customers to maximize tire life and performance.
20-AT-016HG2020-06-06. Service bulletin. POWER TRAIN. The automatic transmission warranty repair policy authorizes in-dealership repairs of the following components for both OEM (new) and remanufactured automatic transmissions:
20-BD-007H-12020-06-06. Service bulletin. EQUIPMENT. This bulletin describes the general guidelines to help disinfect and protect vehicle exterior/interior surfaces using recommended safe chemical products.
20-AT-016H2020-05-07. Service bulletin. POWER TRAIN; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT ADAPTIVE/MOBILITY. The automatic transmission warranty repair policy authorizes in-dealership repairs of the following components for both OEM (new) and remanufactured automatic transmissions:
20-AT-013HG2020-05-07. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Certain Genesis G80 and G90 vehicles may experience the Shift By Wire (SBW) system slipping into Neutral when shifting from Reverse to Drive or Drive to Reverse. Replace the electronic shifter with a new shifter that has a production date of 6/2/17 or newer to resolve this condition.
20-BD-009HG2020-04-07. Service bulletin. SEATS. Some vehicles may experience seat noise and/or possible wobble movement from the seat bottom when the vehicle is turning. This bulletin describes the procedure to install an e-ring clip to the tilt pipe housing on the front seat.
20-BD-007H2020-04-07. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. This bulletin describes the general guidelines to disinfect and protect vehicle interior surfaces using certain safe chemical products.
20-EE-002H(1)2020-04-07. Service bulletin. ELECTRICAL SYSTEM. This bulletin describes the mandatory procedure to submit battery test data electronically for battery warranty claims by running the GDS Battery Claim App. The App must be run right after an incident battery is removed from the vehicle or after a battery charge is completed which qualifies for a warranty. It must be run at any time between RO open and close dates.
20-BD-003HG2020-03-07. Service bulletin. SEATS; EQUIPMENT ADAPTIVE/MOBILITY. Certain 2017-2018 G80 (DH) vehicles may have a condition where the seat backboard comes loose. This bulletin describes the procedure to replace the seat backboard clip.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.