{"nhtsa_id":10153564,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2019-02-25","date":"2018-12-12","document_id":"122-U4G4A-01","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT:APPLIANCE:AIR CONDITIONER","mfr_system":null,"summary":"Subject: Air conditioning Symptom: Complaint about \"knocking noises\" from the underbody area.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2018/MC-10153564-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2018/MC-10153564-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10153564","components":[{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"hvac","name":"Heating and air conditioning","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"PORSCHE","model":"911","year_from":2018,"year_to":2019,"match":"exact","vehicle_ids":["2018_porsche_911","2019_porsche_911"]},{"make":"PORSCHE","model":"911 CARRERA","year_from":2017,"year_to":2017,"match":"base","vehicle_ids":["2017_porsche_911"]}],"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":[]}