2023 Genesis G90 Technical Service Bulletins

48 technical service bulletins (TSBs) are on record for the 2023 Genesis G90. 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.
• 11038724Oct 14, 2026Back-over prevention (rear camera). Some Genesis vehicles may be equipped with a parking distance warning (PDW) sensor(s) that may trigger various DTCs and display warning messages on the instrument cluster, resulting in the PDW sensor(s) failing to detect nearby objects or triggering multiple false alarms. This condition may be a result of external damage to the PDW sensor membrane or sensor cover from rock chips or road debris, a collision, or…
• 11038603Oct 10, 2026Electrical system. Genesis has become aware that some vehicles may exhibit an inability to perform Over-The-Air (OTA) software updates due to an internal logic error that prevents the updates from being completed properly.
• 11037488Sep 24, 2026Body and structure. Some Genesis G90 (RS4) vehicles equipped with the power door system (PDS) may produce a clunking noise when the power door is manually opened or closed. This bulletin provides instructions to remove the PDS from the affected door and perform a partial replacement of the PDS spindle sub-assembly to address the noise condition.
• 11037285Sep 9, 2026Electrical system. Certain GV60 (JW1 EV) and G90 (RS4) vehicles may exhibit an inability to perform Over the Air (OTA) software updates due to an internal logic error that prevents the updates from being completed properly. This bulletin provides instructions to perform a Data Connectivity Unit (DCU) software update to correct this condition.
• 11037284Sep 9, 2026Electrical system. Certain GV60 (JW1 EV) and G90 (RS4) vehicles may exhibit an inability to perform Over the Air (OTA)software updates due to an internal logic error that prevents the updates from being completed properly.
• 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…
• 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…
• 11031317Apr 10, 2026Electrical system. Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Connected Car Services (CCS) functions. This may be due to an occasional disconnection on Verizon's communication network. Technical Service Bulletin (TSB) 26-01-035G provides instructions to verify Connected Car Data Communication Unit (DCU) network connection and if needed, reset the DCU in Dealer Mode to resolve the…
• 11031316Apr 10, 2026Electrical system. Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Connected Car Services (CCS) functions. This may be due to an occasional disconnection on Verizon’s communication network. Follow the procedures in this bulletin to verify Connected Car Data Communication Unit (DCU) network connection and if needed, reset the DCU in Dealer Mode to resolve the connection.
• 11030323Mar 10, 2026Forward collision avoidance, Lane departure, 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.
• 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.
• 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…
• 11018580May 8, 2025Electrical system. Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Connected Car Services (CCS) functions. This may be due to an occasional disconnection on Verizon’s communication network. Follow the procedures in this bulletin to verify Connected Car Data Communication Unit (DCU) network connection and if needed, reset the DCU in Dealer Mode to resolve the connection.
• 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.
• 11015619Mar 13, 2025Electrical system. Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Connected Car Services (CCS) functions. This may be due to an occasional disconnection on Verizon’s communication network.
• 11014929Feb 28, 2025Electrical system. Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Connected Car Services (CCS) functions. This may be due to an occasional disconnection on Verizon’s communication network. Follow the procedures in this bulletin to verify Connected Car Data Communication Unit (DCU) network connection and if needed, reset the DCU in Dealer Mode to resolve the connection.
• 11014446Feb 22, 2025Electrical system. Genesis Motor America has noted that several vehicles were impacted by a telecommunications outage that occurred on Sunday, February 9th , resulting in the potential loss of connectivity or interruptions when attempting to use Connected Car Services functions. Voice Recognition, Sports Media, and Weather will not be available. Retailer stock and retailed vehicles are both affected.
• 11014290Feb 14, 2025Electrical system. Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Connected Car Service (CCS) functions. This may be due to an occasional disconnection on Verizon’s communication network. Follow the procedures in this bulletin to reset the Connected Car Data Communication Unit (DCU) in Dealer Mode to resolve the connection.
• 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).
• 11008140Sep 23, 2024Electrical system. Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Connected Car Service (CCS) functions. This may be due to an occasional disconnection on Verizon’s communication network. Follow the procedures in this bulletin to reset the Connected Car Data Communication Unit (DCU) in Dealer Mode to resolve the connection.
• 11008001Sep 12, 2024Electrical system. This message provides instructions for vehicles experiencing an incomplete Over-The-Air (“OTA”) AVN software update.
• 11007464Sep 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.
• 10249715Jan 25, 2024Electrical system. This bulletin provides instructions to update the AVN software for vehicles experiencing an OTA stop during the AVN software update at 65% due to a lack of storage space from an overflow of log files.
• 10247603Dec 15, 2023Engine cooling, Electrical system. 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…
• 10245583Nov 15, 2023Transmission and drivetrain. When servicing any of the specified vehicles below with the corresponding DTCs, follow the step-by-step procedures in this bulletin. • Transfer case actuator DTC codes P196000, P195800, or P195513
• 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.
• 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.
• 10227327Nov 16, 2022Other or unknown, Seats, Electrical system. This bulletin provides information on performing a software update to the Power Seat Module (DPSM/PSM) and Assist Power Seat Module (APSM) for G90 (RS4) vehicles for improved usability and interference prevention logic.
• 10225469Oct 14, 2022Seats. This bulletin provides information on performing a software update to the Power Seat Module (DPSM/PSM) and Assist Power Seat Module (APSM) for G90 (RS4) vehicles for improved usability and interference prevention logic.
• 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).
• 10253049Feb 3, 2021Equipment. Genesis 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.
• 10253038Jul 27, 2020Transmission and drivetrain. This bulletin provides a procedure to transfer oil pressure data to the TCU using GDS Mobile. This procedure is necessary to reduce the TCU learning time and improve the shift quality.  Before replacing an automatic transmission (Pages 2~3): Input the data from the new transmission into the TCU using the GDS.  Before replacing a TCU (Pages 4~6): Back up the oil pressure data from the old TCU into the GDS and…
• 10253031Nov 18, 2019Visibility (wipers, defrost, mirrors), Electrical system. Certain vehicles (listed below) equipped with the HomeLink5 (Two Way Communication) mirror may experience programming and operating difficulties with the home garage system. This bulletin provides information related to some of the possible symptoms.
• 10253026Sep 30, 2019Transmission and drivetrain. If you are servicing a vehicle with a transmission slipping concern, follow the Service Procedure shown below and perform a stall test. This TSB provides a procedure to test each clutch in the transmission. If the vehicle fails the stall test, replace the transmission. PASS: Stall speed is between 1700~2900 rpm (See shop manual for stall speed). FAIL: Engine revs to redline limit (6,000~6,500 rpm). If so, replace…
• 10253043Jun 12, 2019Transmission and drivetrain. This bulletin provides a procedure to diagnose an 8-speed automatic transaxle with a harsh and/or delayed shift.
• 10253025Jun 4, 2019Transmission and drivetrain. This TSB provides a procedure to diagnose and repair a transaxle for the following Incorrect Ratio DTC (transaxle clutch slipping more than 200 rpm in gear).
• 10253042Apr 15, 2019Transmission and drivetrain. This bulletin provides a procedure to transfer oil pressure data to the TCU using GDS Mobile. This procedure is necessary to reduce the TCU learning time and improve the shift quality.  Before replacing an automatic transmission: Input the data into the TCU using the GDS.  Before replacing a TCU: Back up the oil pressure data from the old TCU into the GDS and then transfer the data to the new TCM.
• 10253024Apr 8, 2019Transmission and drivetrain. 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.

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