2023 Hyundai Sonata Technical Service Bulletins

54 technical service bulletins (TSBs) are on record for the 2023 Hyundai Sonata. 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.

• 10235340Apr 6, 2023Engine 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.
• 10233552Mar 23, 2023Engine 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).
• 10233545Mar 20, 2023Engine 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
• 10230904Jan 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. 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…

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