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Service bulletins for the 2015 Hyundai Sonata

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.

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

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Bulletins, newest first
20-01-037H2020-10-08. Service bulletin. ENGINE AND ENGINE COOLING. The warranty coverage for the engine long block has been extended to 10 years or 120,000 miles from the date of original retail delivery or date of first use, whichever occurs first, and is valid for original and subsequent owners.
20-ST-001H-22020-10-08. Service bulletin. STEERING; EQUIPMENT. This bulletin provides information regarding replacement of the column-mounted Motor Driven Power Steering (MDPS) system as separate components.
20-ST-001H-12020-09-03. Service bulletin. STEERING:COLUMN; ELECTRICAL SYSTEM; STEERING:AUTOMATED/ADAPTIVE STEERING:MOTOR/ACTUATOR. This bulletin provides information regarding replacement of the column-mounted Motor Driven Power Steering (MDPS) system as separate components.
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.
TXXI Dealer Best2020-08-07. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE. This Dealer Best Practice intends to inform dealers of a proposed settlement (“Settlement”) for a class action lawsuit filed against Hyundai Motor America (“HMA”). Beginning in July 2020, customers affected by the proposed settlement will begin becoming informed of the settlement by mailed notice and email, and they may direct questions to dealers. Please go to HyundaiThetaEngineSettlement.com for full details. In addition, customer questions can also be directed to 1-866-944-7620 (Monday to Friday 7am-5pm PST).
Campaign TWW Dea2020-07-08. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. This service campaign provides instructions to update both the ECM (Engine Control Module) and the TCM (Transmission Control Module) to improve the shift quality of the DCT (Dual Clutch Transmission) for these vehicles.
20-01-025H2020-07-08. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. This bulletin provides the procedure to update both the ECM (Engine Control Module) and the TCM (Transmission Control Module) on certain 2015-2017 Hyundai Sonatas equipped with 1.6L turbo engine 7-speed DCT Transmission.
20-BE-008H2020-07-08. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); ELECTRICAL SYSTEM:SOFTWARE. This bulletin provides information for new software to update the Navigation and Display Audio system to include the Apple CarPlay and Android Auto feature. This bulletin describes how to transfer the update software to a storage drive (USB or SD Card) and perform the software installation into the audio system.
Campaign T3G Dea2020-07-08. Service bulletin. ENGINE; EQUIPMENT:ELECTRICAL. Applicable vehicles with 2.0L Turbo and 2.4L GDI engines may experience the Check Engine warning lamp illuminated with DTC P1326. Follow the procedures on TSB #20-01-004H-1 (supersedes TSB #20-01-004H) to inspect the vehicle and replace the engine or update the engine ECU software based on the inspection results.
20-01-004H-12020-07-08. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE. Applicable vehicles with 2.0L Turbo and 2.4L GDI engines may experience the Check Engine warning lamp illuminated with DTC P1326. Follow the procedure to inspect the vehicle and replace the engine or update the engine ECU software based on the inspection results.
20-01-024H2020-07-08. Service bulletin. ENGINE; ELECTRICAL SYSTEM:SOFTWARE. Applicable vehicles with 2.0L Turbo and 2.4L GDI engines may experience the Check Engine warning lamp illuminated with DTC P1326. Follow the procedure to inspect the vehicle and replace the engine or update the engine ECU software based on the inspection results. Consult the Hyundai Warranty Policy & Procedures and the below chart to determine New or Reman engine usage.
20-BD-010H-12020-06-06. Service bulletin. LATCHES/LOCKS/LINKAGES. The trunk latch base can be ordered separately from the trunk latch assembly. This bulletin describes the procedure to replace the trunk latch base.
20-AT-017H2020-06-06. Service bulletin. POWER TRAIN. If you are servicing an applicable vehicle with the following symptoms and DTC, follow the Service Procedure on Page 4. • Check Engine light on • DTC P0880/P088000 - TCM Power signal error open/short • Transmission stuck in 4th gear fail-safe • Harsh shift into Reverse and Drive
20-BD-015H2020-06-06. Service bulletin. STRUCTURE. On certain Sonata (LF) vehicles equipped with smart trunk, the trunk lid may not open to the desired height when using the smart trunk feature. Follow the procedure in the bulletin to inspect the trunk lid opening height, and replace the torsion bars if required. The warranty coverage for the trunk lid torsion bars has been extended to 78 months or 78,000 miles from the date of original retail delivery or date of first use, whichever occurs first, and is valid for original and subsequent owners.
Smart Trunk Deal2020-06-06. Service bulletin. STRUCTURE. A nationwide settlement (“Settlement”) has been reached in a class action lawsuit against Hyundai Motor America (“HMA”). The lawsuit concerns model year 2015 to 2017 U.S. specification Hyundai Sonata vehicles equipped with the Smart Trunk feature purchased or leased in the fifty United States or the District of Columbia (“Class Vehicles”). The lawsuit alleges that torsion bars on the Smart Trunk in the Class Vehicles are defective because they do not open a sufficient amount. . Defendant has denied these allegations.
DCT Dealer Best2020-06-06. Service bulletin. POWER TRAIN. An informational brochure about the Dual Clutch Transmission was sent to Class Members of 2015-2017 model year Sonata Eco vehicles, 2016-2017 model year Tucson vehicles, and 2016-2017 model year Veloster vehicles equipped with a Dual Clutch Transmission.
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-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-EE-003H2020-05-07. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin provides information on identifying dealer stock vehicles with either: • A Battery SOC alert - low Battery State of Charge (SOC) at or below 50%. • A 30 Day alert - vehicle has not started and reported an SOC in 30 days.
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-014H2020-05-07. Service bulletin. POWER TRAIN; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. If you are servicing an applicable vehicle with a “Check Engine” light on and one or more of the DTC listed below, follow the repair procedure and replace the related solenoid and oil pressure harness.
20-BD-010H2020-05-06. Service bulletin. LATCHES/LOCKS/LINKAGES:TRUNK LID:LOCK; LATCHES/LOCKS/LINKAGES; EQUIPMENT. The trunk latch base can be ordered separately from the trunk latch assembly. This bulletin describes the procedure to replace the trunk latch base.
20-HA-001H2020-04-07. Service bulletin. SERVICE BRAKES, AIR:SUPPLY:COMPRESSOR. This bulletin provides additional service diagnostic information and repair procedures related to electric A/C compressors equipped in hybrid electric vehicles, plug-in hybrid electric vehicles, and electric vehicles.
20-AT-011H2020-04-07. Service bulletin. SERVICE BRAKES, AIR:ANTILOCK:WHEEL SPEED SENSOR. If you are servicing an applicable vehicle with a “Check Engine” light on and one or more of the DTC listed below, follow the repair procedure and replace the related solenoid and oil pressure harness.
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.

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