{"nhtsa_id":10003857,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2003-11-05","date":"2003-07-01","document_id":"17001","mfr_campaign":null,"replaces":null,"component":"STEERING","mfr_system":null,"summary":"ADVANCETRAC MALFUNCTION INDICATOR LAMP ON WITH DIAGNOSTIC TROUBLE CODE C1277 (STEERING WHEEL ANGLE 1 AN 2 CIRCUIT FAILURE) OR C1278 (STEERING WHEEL ANGLE 1 AND 2 SIGNAL FAULTED) IN THE IVD MODULE. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10003857","components":[{"id":"steering","name":"Steering","parent":null}],"codes":["C1277","C1278"],"topics":[],"vehicles":[{"make":"FORD","model":"EXPEDITION","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_ford_expedition"]},{"make":"LINCOLN","model":"NAVIGATOR","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_lincoln_navigator"]}],"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":[]}