{"nhtsa_id":10231810,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-02-13","date":"2023-01-27","document_id":"18-013-23","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; POWER TRAIN","mfr_system":null,"summary":"Flash: Powertrain Control Module (PCM) Updates Customers may experience one or more of the following: Engine must be started twice to achieve drive ready (at low temperatures around -30°C, -22°F) when the vehicle was entered and started quickly. ?Performance Limited, Service Fuel System? popup while driving. Unable to enter electric mode driving while FORM is active. This bulletin involves reprogramming the PCM with the latest available software. NOTE: Additional module flashes are required for this update to be effective, the following modules are all to be updated along with this HCP and AHCP update: Transmission Control Module (TCM). Hybrid Control Processor (HCP) and Auxiliary Hybrid Control Processor (AHCP) also known as Power Inverter Module (PIM) module.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10231810-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10231810-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10231810","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"JEEP","model":"GRAND CHEROKEE 4XE","year_from":2022,"year_to":2022,"match":"base","vehicle_ids":["2022_jeep_grand-cherokee"]}],"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":[]}