{"nhtsa_id":10171021,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-02-05","date":"2020-01-31","document_id":"36-005","mfr_campaign":null,"replaces":null,"component":"VEHICLE SPEED CONTROL; SERVICE BRAKES","mfr_system":null,"summary":"Information Only - Driver Performance Assistance (DPA) Coasting and Braking Scores Not Incrementing, Stays at 50%. The average score will never change nor create driver assistance popups based upon driver’s actions. A future software update will resolve the issue. This bulletin will be updated when the software update becomes available.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10171021-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10171021-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10171021","components":[{"id":"brakes","name":"Brakes","parent":null},{"id":"speed-control","name":"Throttle and cruise control","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"KENWORTH","model":"T680","year_from":2020,"year_to":2021,"match":"exact","vehicle_ids":["2020_kenworth_t680","2021_kenworth_t680"]},{"make":"KENWORTH","model":"T880","year_from":2020,"year_to":2021,"match":"exact","vehicle_ids":["2020_kenworth_t880","2021_kenworth_t880"]},{"make":"KENWORTH","model":"W990","year_from":2020,"year_to":2021,"match":"exact","vehicle_ids":["2020_kenworth_w990","2021_kenworth_w990"]},{"make":"PETERBILT","model":"567","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_peterbilt_567"]}],"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":[]}