{"nhtsa_id":10230114,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-01-17","date":"2021-05-12","document_id":"2400621","mfr_campaign":null,"replaces":null,"component":"EXTERIOR LIGHTING; ELECTRICAL SYSTEM; POWER TRAIN","mfr_system":null,"summary":"Flash: Heating, Ventilation and Air Conditioning (HVAC) Module Updates This bulletin involves reprogramming the HVAC control module with the latest available software. The customer may experience a Malfunction Indicator Lamp (MIL) illumination with the following Diagnostic Trouble Code (DTC) or the symptom/conditions listed below: B10C8-36 - Cabin Fan Brushless - Signal Frequency Too Low. The HVAC fan stops working after a Engine Start/Stop (ESS) function.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10230114-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10230114-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10230114","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"lighting","name":"Lighting","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":["B10C8"],"topics":[],"vehicles":[{"make":"ALFA ROMEO","model":"STELVIO","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_alfa-romeo_stelvio"]}],"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":[]}