Jeep Grand Cherokee 2024 — technical service bulletin
Bulletin 08-138-25 · NHTSA communication 11017972 · issued Apr 30, 2025
Technical service bulletin
communication type
Suspension
component
2024
model years
3
vehicle entries
Official 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. "
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.