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.
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Only bulletins with component: Heating and air conditioning are shown. Show all
| 5NP-B3Q3X-07 | 2017-08-17. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. This bulletin provides additional service procedures to assist the diagnosis of vehicles equipped with variable displacement A/C compressors that features an external control valve (ECV). |
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| 5NP-D4B5F-04 | 2017-08-10. Service bulletin. EQUIPMENT:ELECTRICAL; EQUIPMENT:APPLIANCE:AIR CONDITIONER. Some Sonata (YF) vehicles may develop a condition with the separator plate in the middle of the heater box (Heater & Evaporator Assembly) becoming warped and may cause interference against one or more of the internal flaps that control air flow to the vents. This condition may result in HVAC system exhibiting abnormal noise from the heater box, difficulty to control the vented temperature, blocked airflow due to improper mode control, and/or airflow stuck in defrost mode. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.