{"nhtsa_id":10194073,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-05-24","date":"2021-04-29","document_id":"08-069-21","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"Detailed Proper PHEV Engine Operation This bulletin is to communicate that when the combustion engine starts for the first time within a key-cycle (either when the vehicle is first operational at the key crank, or while driving), the propulsion system will generally operate in ?series-mode? for up to 60 seconds.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10194073-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10194073-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10194073","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"JEEP","model":"WRANGLER","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_jeep_wrangler"]}],"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":[]}