News Technical Service Bulletins

Air Suspension Glitch with Ram

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This bulletin applies to 2015-2016 RAM 1500 trucks equipped with ASCM (air suspension control module). Customers may experience no ride height change with the vehicle in very cold conditions. The MIL may be on, with the following DTCs set:

C15A1-00 (unable to obtain desired ride height)

C1562-98 (ride height air pump control, component or system over temperature)

C1562-92 (height air pump control, performance or incorrect operation)

C159F-92 (air suspension reverse valve 1 control, performance or incorrect operation)

C15A0-92 (air suspension reverse valve 2 control, performance or incorrect operation)

C155E-92 (height pressure vent control, performance or incorrect operation)

C15AA-00 (air leak during vent)

The fix: reprogram the ASCM with the latest software. The expected completion time for the flash download portion of the procedure is approximately 2 minutes. Actual download time may be affected by vehicle connection and network capabilities.


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