Service bulletins for the 2023 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.
57 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
| 23-BD-007H | 2023-05-04. Service bulletin. STRUCTURE:BODY. 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. |
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| 23-EE-005H | 2023-05-02. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides the procedure to repair poor pin tension at joint connector JE102 in certain Sonata (1.6 T-GDI engine) with one or more DTC. |
| 23-EE-006H | 2023-05-02. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides the procedure to repair poor pin tension at joint connector JE202 in certain Sonata (2.5L GDI engine) with one or more DTC. |
| 23-AT-003H | 2023-05-02. Service bulletin. ENGINE AND ENGINE COOLING. If you are servicing an 8-speed vehicle with a “Check Engine” light on and one or more of the DTC listed, follow the service procedure and replace the related solenoid and harness. |
| 23-FL-002H | 2023-04-04. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides the diagnostic procedure for the GDI injector(s) in certain 21-23MY Sonata, 21-22MY Santa Fe, certain 22MY Santa Cruz, and certain MY21-23 Tucson equipped with 2.5L GDI engines with one or more misfire DTC(s) due to internally leaking GDI injector(s). |
| 23-01-023H | 2023-04-04. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides information related to the ECU software update for Sonata Hybrid (DN8 HEV) vehicles to revise the logic for the following DTC : • DTC P00B7 – Engine Coolant Flow Low/Performance |
| 23-BD-002H | 2023-02-02. Service bulletin. VISIBILITY. 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 during normal driving operation. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.