{"nhtsa_id":10053728,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2013-11-20","date":"2013-08-01","document_id":"TSB-040","mfr_campaign":null,"replaces":null,"component":"SUSPENSION:REAR; SUSPENSION:FRONT:CONTROL ARM:LOWER ARM","mfr_system":null,"summary":"KIA: INFORMATION PROVIDED REGARDING SOME VEHICLES, IN STATES WHERE HEAVY AMOUNTS OF ROAD SALT IS USED FOR DE-ICING AND NEED TO HAVE BOTH REAR LOWER CONTROL ARMS REPLACED, THAT RESULTS IN CORROSION THAT CAUSES A KNOCKING OR CLUNKING NOISE. MODELS 2011-2012 OPTIMA. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10053728","components":[{"id":"suspension","name":"Suspension","parent":null},{"id":"control-arm","name":"Control arm","parent":"suspension"}],"codes":[],"topics":[],"vehicles":[{"make":"KIA","model":"OPTIMA","year_from":2011,"year_to":2012,"match":"exact","vehicle_ids":["2011_kia_optima","2012_kia_optima"]},{"make":"KIA","model":"OPTIMA HYBRID","year_from":2011,"year_to":2012,"match":"base","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":[]}