{"nhtsa_id":10089850,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-01-30","date":"2015-05-22","document_id":"TT065","mfr_campaign":null,"replaces":null,"component":"VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; EQUIPMENT","mfr_system":null,"summary":"\"TECH TIP: BUZZING NOISE FROM DASH SYMPTOM: BUZZING NOISE COMING FROM DASH AREA. REPAIR: OPERATE THE AIR-TEMP CONTROLS OR THE VENT AIR POSITION CONTROL SETTING. IF THE NOISE STOPS AFTER ADJUSTING THE CONTROLS, THE NOISE MAY BE CAUSED BY A FAULTY AIR TEMP ACTUATOR OR AIR VENT POSITION ACTUATOR. TO RESOLVE THIS CONCERN, IDENTIFY WHICH BLEND ACTUATOR IS THE SOURCE OF THE NOISE (SEE IMAGE) AND REPLACE IT.\"","document":null,"url":"https://open.wenmarpro.com/bulletins/10089850","components":[{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"visibility","name":"Glass, wipers and mirrors","parent":null},{"id":"hvac","name":"Heating and air conditioning","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"KIA","model":"OPTIMA","year_from":2011,"year_to":2012,"match":"exact","vehicle_ids":["2011_kia_optima","2012_kia_optima"]}],"as_of":"2026-10-19","note":"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.","attribution":[]}