{"nhtsa_id":11028243,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-02-04","date":"2026-01-27","document_id":"21-013-26","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"Flash: Transmission Control Module (TCM) Updates Customers may also experience one or more of the following: ● Customer is unable to switch the ignition to OFF when in Park gear. ● After shifting into Park, the Instrument Panel Cluster (IPC) will display that the transmission is in Neutral. NOTE: The transmission will actually be in Park and able to hold the vehicle, but the cluster display would indicate Neutral, preventing the engine from shutting off. This bulletin involves inspecting and possibly reprogramming the TCM with the latest available software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11028243-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11028243-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11028243","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"RAM","model":"4500","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["2025_ram_4500"]},{"make":"RAM","model":"5500","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["2025_ram_5500"]}],"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":[]}