{"nhtsa_id":11029689,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-03-05","date":"2026-02-16","document_id":"9100768","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"If the Power Liftgate (PLG) does not operate following battery drainage or when DTCs B2199-16 or B21DD-16 are active, perform the following steps: 1. Verify Battery Voltage: Ensure battery voltage is at nominal value (minimum 12.5 V). Charge the battery, if necessary before proceeding. 2. Confirm Low Voltage DTCs: After charging, verify that any low battery voltage DTCs are stored. 3. Check PLGM Proxi Alignment: 4. If PLGM is not aligned: - Perform Proxi Alignment - Reset the module - Perform module recalibration. 5. If Proxi Is Correct: - Reset the module. - Perform module calibration. 6. Diagnose Active DTCs 7. Inspect wiring and related components associated with those DTCs. Repair as necessary and clear DTCs. 8. Module Replacement: If the module does not accept Proxi alignment, Module reset, or Calibration.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11029689-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11029689-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11029689","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":["B2199","B21DD"],"topics":[],"vehicles":[{"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":[]}