{"nhtsa_id":11017972,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-05-06","date":"2025-04-30","document_id":"08-138-25","mfr_campaign":null,"replaces":null,"component":"SUSPENSION","mfr_system":"Air Suspension Control Module","summary":"\"Flash: Air Suspension Control Module (ASCM) Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Codes (DTC): ● U0300 - Internal Control Module Software Incompatibility.** Customers may experience one or more of the following: ● Ride height disabled. ● Suspension will lower, but will not raise. ● Instrument Panel Message (IPC) message \"\"selected ride height not permitted due to payload\"\" appears. This bulletin involves reprogramming the ASCM with the latest available software. \"","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11017972-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11017972-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11017972","components":[{"id":"suspension","name":"Suspension","parent":null}],"codes":["U0300"],"topics":[],"vehicles":[{"make":"JEEP","model":"GRAND CHEROKEE","year_from":2024,"year_to":2024,"match":"exact","vehicle_ids":["2024_jeep_grand-cherokee"]},{"make":"JEEP","model":"GRAND CHEROKEE 4XE","year_from":2024,"year_to":2024,"match":"base","vehicle_ids":["2024_jeep_grand-cherokee"]},{"make":"JEEP","model":"GRAND CHEROKEE L","year_from":2024,"year_to":2024,"match":"exact","vehicle_ids":["2024_jeep_grand-cherokee-l"]}],"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":[]}