{"nhtsa_id":606975,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1999-09-09","date":"1999-05-01","document_id":"996111","mfr_campaign":null,"replaces":null,"component":"UNKNOWN OR OTHER; EXTERIOR LIGHTING","mfr_system":null,"summary":"SOME VEHICLES MAY EXHIBIT A MALFUNCTION INDICATOR LIGHT (MIL) AND DIAGNOSTIC TROUBLE CODE (DTC) P1633 IN MEMORY. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/606975","components":[{"id":"lighting","name":"Lighting","parent":null}],"codes":["P1633"],"topics":[],"vehicles":[{"make":"FORD","model":"ESCORT","year_from":1999,"year_to":1999,"match":"exact","vehicle_ids":["1999_ford_escort"]},{"make":"FORD","model":"ZX2 (ESCORT)","year_from":1999,"year_to":1999,"match":"base","vehicle_ids":["1999_ford_zx2"]}],"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":[]}