{"nhtsa_id":11025037,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-11-05","date":"2025-10-29","document_id":"9100708","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"DTC B1E21 is triggered when the TBM Backup Battery is discharged, inactive, or drained. This can happen during the lifetime of the vehicle. TBM should not be replace for B1E21, since there is no fault on TBM. TBM battery is replaceable. Part number of the back-up battery inside TBM is 68597650AA.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11025037-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11025037-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11025037","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":["B1E21"],"topics":[],"vehicles":[{"make":"JEEP","model":"GRAND CHEROKEE","year_from":2026,"year_to":2026,"match":"exact","vehicle_ids":["2026_jeep_grand-cherokee"]},{"make":"JEEP","model":"GRAND CHEROKEE 4XE","year_from":2026,"year_to":2026,"match":"base","vehicle_ids":["2026_jeep_grand-cherokee"]},{"make":"JEEP","model":"GRAND CHEROKEE L","year_from":2026,"year_to":2026,"match":"exact","vehicle_ids":["2026_jeep_grand-cherokee-l"]},{"make":"JEEP","model":"GRAND WAGONEER","year_from":2024,"year_to":2026,"match":"exact","vehicle_ids":["2024_jeep_grand-wagoneer","2025_jeep_grand-wagoneer","2026_jeep_grand-wagoneer"]},{"make":"JEEP","model":"WAGONEER","year_from":2024,"year_to":2025,"match":"exact","vehicle_ids":["2024_jeep_wagoneer","2025_jeep_wagoneer"]},{"make":"JEEP","model":"WAGONEER","year_from":2026,"year_to":2026,"match":null,"vehicle_ids":[]}],"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":[]}