{"nhtsa_id":10121605,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-10-31","date":"2014-10-15","document_id":"Update Bulletin","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE","mfr_system":null,"summary":"UPDATE Technical Bulletin (TDI Battery Management Software): The battery can become discharged when the ECM \"wakes-up\" the CAN bus to do a diagnostic (~9 hours after vehicle shut-off). During that diagnostic time-window, if the door is opened or the ignition is switched ON, the ECM goes into a mode that can continuously wake-up the CAN bus, leading to excessive parasitic draw and a discharged battery while the vehicle is parked. This update has been proactively released to prevent the battery from becoming discharged due to a unique set of circumstances during the CAN bus diagnostic phase, leading to excessive parasitic draw and a discharged battery while the vehicle is parked.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10121605-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10121605-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10121605","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"battery","name":"12-volt battery","parent":"electrical"},{"id":"software","name":"Software","parent":"electrical"}],"codes":[],"topics":[],"vehicles":[{"make":"VOLKSWAGEN","model":"BEETLE","year_from":2015,"year_to":2015,"match":"exact","vehicle_ids":["2015_volkswagen_beetle"]},{"make":"VOLKSWAGEN","model":"BEETLE CONVERTIBLE","year_from":2015,"year_to":2015,"match":"base","vehicle_ids":["2015_volkswagen_beetle"]},{"make":"VOLKSWAGEN","model":"GOLF","year_from":2015,"year_to":2015,"match":"exact","vehicle_ids":["2015_volkswagen_golf"]},{"make":"VOLKSWAGEN","model":"JETTA","year_from":2015,"year_to":2015,"match":"exact","vehicle_ids":["2015_volkswagen_jetta"]},{"make":"VOLKSWAGEN","model":"PASSAT","year_from":2015,"year_to":2015,"match":"exact","vehicle_ids":["2015_volkswagen_passat"]}],"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":[]}