{"nhtsa_id":10166844,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2019-10-30","date":"2019-10-02","document_id":"09-036-19-3623","mfr_campaign":null,"replaces":null,"component":"EXTERIOR LIGHTING","mfr_system":null,"summary":"Some customers may complain about an instrument cluster warning message \"Auto Light System Malfunction. Turn On/Off Lights Manually\". DTC B10AD:09 (Humidity sensor/solar radiation sensor/auto light sensor/rain sensor malfunction) may also be stored with the exterior light warning indicator light ON.display. This is caused by the rain sensor detecting a temperature higher than the operation range and temporarily stopping the auto light system. As a fail-safe, the low beam headlights are turned on. The auto light system will start to operate normally when the A/C is turned on and the interior temperature drops. To correct this concern, the heat resistance performance of the rain sensor has been enhanced.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10166844-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10166844-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10166844","components":[{"id":"lighting","name":"Lighting","parent":null}],"codes":["B10AD"],"topics":[],"vehicles":[{"make":"MAZDA","model":"MAZDA3","year_from":2019,"year_to":2020,"match":"exact","vehicle_ids":["2019_mazda_mazda3","2020_mazda_mazda3"]}],"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":[]}