Service bulletins for the 2012 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.
230 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
| 19-01-006H-4 | 2019-11-18. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM:WIRING. 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 install a wire harness extension and/or replacement engine based on the inspection results. |
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| 19-01-002H-4 | 2019-11-18. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE. Hyundai is conducting a product improvement campaign to enhance the knock sensor software to detect abnormal engine bearing noise before potentially severe engine damage occurs. If abnormal engine bearing noise is detected, the Malfunction Indicator Lamp (MIL) will blink continuously, a chime will sound on certain vehicles, and the vehicle will be placed in Engine Protection Mode allowing the customer to drive to the nearest Hyundai dealer for diagnosis and repair. In addition, DTC P132600 will be recorded in the ECM. The vehicle can continue to be operated for a limited time in Engine Protection Mode, but it will accelerate slower and have a reduced maximum speed. Engine RPMs will be limited to approximately 1800-2000 RPM. |
| Campaign 953 Dea | 2019-11-18. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM:SOFTWARE; ENGINE; EQUIPMENT. Hyundai has developed a new engine monitoring technology called a Knock Sensor Detection System (KSDS). The technology uses software innovations and leverages existing engine sensors to continuously monitor for symptoms that may precede an engine failure. |
| Campaign T3G Dea | 2019-11-18. Service bulletin. ENGINE; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; ELECTRICAL SYSTEM. Hyundai has launched a Service Campaign for applicable vehicles with 2.0L Turbo and 2.4L GDI engines that may experience the Check Engine warning lamp illuminated with DTC P132600. |
| 19-BD-007H | 2019-11-18. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY. The warranty coverage for the panoramic sunroof moving glass 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. |
| 19-01-005H-1 | 2019-11-06. 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. |
| 19-01-006H-4 | 2019-11-06. Service bulletin. 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 install a wire harness extension and/or replacement engine based on the inspection results. |
| 19-01-002H-4 | 2019-11-06. Service bulletin. ENGINE AND ENGINE COOLING. Hyundai is conducting a product improvement campaign to enhance the knock sensor software to detect abnormal engine bearing noise before potentially severe engine damage occurs. If abnormal engine bearing noise is detected, the Malfunction Indicator Lamp (MIL) will blink continuously, a chime will sound on certain vehicles, and the vehicle will be placed in Engine Protection Mode allowing the customer to drive to the nearest Hyundai dealer for diagnosis and repair. In addition, DTC P132600 will be recorded in the ECM. The vehicle can continue to be operated for a limited time in Engine Protection Mode, but it will accelerate slower and have a reduced maximum speed. Engine RPMs will be limited to approximately 1800-2000 RPM. |
| Campaign 953 Dea | 2019-11-06. Service bulletin. ENGINE AND ENGINE COOLING. Hyundai has developed a new engine monitoring technology called a Knock Sensor Detection System (KSDS). The technology uses software innovations and leverages existing engine sensors to continuously monitor for symptoms that may precede an engine failure. |
| Campaign T3G Dea | 2019-11-06. Service bulletin. ENGINE AND ENGINE COOLING. Hyundai has launched a Service Campaign for applicable vehicles with 2.0L Turbo and 2.4L GDI engines that may experience the Check Engine warning lamp illuminated with DTC P132600. |
| 19-GI-006H | 2019-11-06. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. This bulletin provides instruction detailing the proper methodology for scanning and uploading captured GDS data files to the Techline Repository. Compliance with this bulletin ensures that the GDS data files are correctly transferred and matched with a Techline Case number. |
| 19-BD-007H | 2019-11-06. Service bulletin. STRUCTURE. The warranty coverage for the panoramic sunroof moving glass 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. |
| 19-AT-015H | 2019-09-30. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE. 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 |
| 19-HC-002H | 2019-09-30. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This bulletin provides instructions for a Battery Management System (BMS) software update to optimize DTC P1B70 - HEV Battery Voltage Too Low diagnostic control logic. |
| 19-01-020H | 2019-08-19. Service bulletin. EQUIPMENT; ENGINE. In an effort to support customers to keep their vehicle maintenance up to date, Hyundai will be providing select owners of 2011-2014 Sonata (YF) 2.0T/2.4L and 2013-2014 Santa Fe Sport (AN) 2.0T/2.4L vehicles with an engine oil and oil filter change free of charge. |
| Dealer Best Prac | 2019-08-19. Service bulletin. ENGINE; EQUIPMENT. In an effort to support customers to keep their vehicle maintenance up to date, Hyundai will be providing select owners of 2011-2014 Sonata (YF) 2.0T/2.4L and 2013-2014 Santa Fe Sport (AN) 2.0T/2.4L vehicles with an engine oil and oil filter change free of charge. |
| 19-EE-001H-1 | 2019-08-19. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin provides information on how to return a Hyundai HEV/PHEV/EV/Fuel Cell Lithium Battery for proper disposal and safe environmental recycling using Hyundai?s authorized vendor Kinsbursky Brothers Intl. (KBI). |
| 19-AT-012H | 2019-07-29. Service bulletin. POWER TRAIN. 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). |
| 19-BE-010H | 2019-07-01. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information related to clearing all Diagnostic codes for vehicles equipped with the Blue Link system (Gen 1). |
| 19-EE-003H | 2019-05-20. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. The following summarizes the service procedures for Lithium Battery replacement: |
| 19-01-006H-2 | 2019-05-20. Service bulletin. EQUIPMENT; 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 install a wire harness extension or replacement engine based on the inspection results. |
| 19-ST-001H | 2019-05-20. Service bulletin. STEERING. This bulletin provides information regarding replacement of the column-mounted Motor Driven Power Steering (MDPS) system as separate components. |
| DTC P1326 from 9 | 2019-05-20. Service bulletin. ENGINE. Hyundai has launched a Service Campaign for applicable vehicles with 2.0L Turbo and 2.4L engines that may experience the Check Engine warning lamp illuminated with DTC P1326. |
| 19-HA-001H | 2019-05-20. Service bulletin. ENGINE AND ENGINE COOLING; ENGINE. 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. |
| 19-FL-003H | 2019-05-20. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. This bulletin provides the procedure to write the Vehicle Identification Number (VIN) during the replacement of the Engine Control Module (ECM) or Powertrain Control Module (PCM). Once the VIN has been programmed to the ECM/PCM, it cannot be removed or overwritten. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.