{"nhtsa_id":612403,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2000-06-08","date":"2000-01-01","document_id":"7873","mfr_campaign":null,"replaces":"7873","component":"EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.","mfr_system":null,"summary":"AN INTERMITTENT INCREASE IN THE RADIO VOLUME DURING PARK TO REVERSE NEUTRAL TO DRIVE, AND ABRUPT DRIVE TO PARK SHIFT LEVER MOVEMENTS. THIS CAN ONLY HAPPEN ON AUTOMATIC TRANSMISSION VEHICLES WITH THE AUTOMATIC VOLUME CONTROL (AVC) FEATURE OF THE AUDIO SYSTEM TURNED ON. THE CAUSE IS NOISE IN THE OUTPUT SHAFT SPEED (OSS) SENSOR SIGNAL SENT TO THE POWERTRAN CONTROL MODULE (PCM) THEN PASSED ON TO THE AUDIO SYSTEM.","document":null,"url":"https://open.wenmarpro.com/bulletins/612403","components":[{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"FOCUS","year_from":2000,"year_to":2000,"match":"exact","vehicle_ids":["2000_ford_focus"]}],"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":[]}