WenmarOpen by Wenmar Pro

Service bulletins for the 2019 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.

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

By type

By component

By trouble code

By topic

Bulletins, newest first
20-01-004H-22020-12-08. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT; ENGINE AND ENGINE COOLING. 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-AT-005H-12020-11-06. Service bulletin. POWER TRAIN. 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 valve body harness.
20-01-039H2020-11-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin provides information and procedures for collecting OBD “In Use Monitor Performance Ratio” (IUMPR) data on certain 2019-2021MY vehicles at California dealers. This reporting is mandated by CARB (California Air Resources Board).
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-003H-12020-10-08. Service bulletin. STEERING; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Certain vehicles may develop a bearing noise within the Motor Driven Power Steering (MDPS) column worm shaft assembly. If bearing noise is heard, follow the procedure in this bulletin to replace the worm shaft assembly.
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-AT-020H2020-10-08. Service bulletin. POWER TRAIN. This bulletin provides a procedure to transfer pressure data to the TCU using GDS Mobile. This procedure is necessary to reduce the transmission learning time and improve the shift quality.
20-ST-003H2020-09-03. Service bulletin. STEERING:COLUMN; ELECTRICAL SYSTEM; STEERING:ELECTRIC POWER ASSIST SYSTEM. Certain vehicles may develop a bearing noise within the Motor Driven Power Steering (MDPS) column worm shaft assembly. If bearing noise is heard, follow the procedure in this bulletin to replace the worm shaft assembly.
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 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-FL-005H2020-07-08. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides information related to an Electronic Control Module (ECM) software update to revise the logic for DTC P050A: Cold Start Idle Air Control System Performance.
20-AT-019H2020-06-06. Service bulletin. POWER TRAIN. If you are servicing any of the vehicles listed below with a harsh and/or delayed shift, use the GDS as shown in the Service Procedure to measure shift engagement time.
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
Campaign T4W Dea2020-06-06. Service bulletin. ENGINE AND ENGINE COOLING. Hyundai is conducting a Service Campaign to install a new Air Filter Kit with an updated filter to help prevent entry of the salt particulates on certain 2016-2019 Sonata Hybrid (LF HEV) vehicles.
20-FL-003H2020-06-06. Service bulletin. ENGINE AND ENGINE COOLING. Certain 2016-2019 Sonata Hybrid (LF HEV) vehicles may experience check engine light illumination with DTC P0456 - Evaporative System (EVAP) - Very Small Leak stored. Salt particulate deposit can form inside the Natural Vacuum Leak Detection (NVLD) sensor which may cause intermittent operation prompting the DTC P0456 and check engine light. This bulletin provides the procedure to replace the NVLD sensor with an updated Air Filter Kit to help prevent entry of the salt particulates.
20-01-020H2020-06-06. Service bulletin. ENGINE AND ENGINE COOLING. Certain 2016-2019 Sonata Hybrid (LF HEV) may experience check engine light illumination with DTC P0456 - Evaporative System (EVAP) - Very Small Leak stored. These conditions primarily occur in the California coastal areas that are subject to marine layer cloud cover. Salt particulate deposit can form inside the Natural Vacuum Leak Detection (NVLD) sensor which may cause intermittent operation prompting the DTC P0456 and check engine light. This bulletin provides the procedure to install a new Air Filter Kit with an updated filter to help prevent entry of the salt particulates. In addition, replace NVLD sensor if DTC P0456 found stored in the Engine Control Module (ECM).
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.

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