{"nhtsa_id":11018356,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-05-15","date":"2025-04-18","document_id":"T-SB-0037-25","mfr_campaign":"T-SB-0037-25","replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"Some 2024 – 2025 model year Grand Highlander and Grand Highlander Hybrid vehicles may exhibit a condition where the Blind Spot Monitor (BSM) system is inoperative, there is a BSM malfunction message on the multi-information display (MID), or the driving assist information indicator is illuminated, along with one or more of the following Diagnostic Trouble Codes (DTCs) present: •C1AB413 – Outer Mirror Indicator (Module \"B\" Side) Circuit Open •C1AB513 – Outer Mirror Indicator (Module \"A\" Side) Circuit Open The BSM sensor software has been updated to reduce the possibility of these conditions.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11018356-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11018356-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11018356","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":["C1AB4","C1AB5"],"topics":[],"vehicles":[{"make":"TOYOTA","model":"GRAND HIGHLANDER","year_from":2024,"year_to":2025,"match":"exact","vehicle_ids":["2024_toyota_grand-highlander","2025_toyota_grand-highlander"]},{"make":"TOYOTA","model":"GRAND HIGHLANDER HYBRID","year_from":2024,"year_to":2025,"match":"base","vehicle_ids":["2024_toyota_grand-highlander","2025_toyota_grand-highlander"]}],"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":[]}