Leveling System Complaints

Various electrical and pneumatic fault conditions can prevent valid leveling system operations. Although some of the fault conditions cause storage of corresponding fault codes, none of them causes the "SERVICE RIDE CONTROL" message to be displayed.

Therefore, if a complaint of incorrect vehicle leveling operation occurs, always begin the diagnostic procedure by displaying fault codes and repairing any faults which are recorded. After all fault codes are addressed and cleared, if the leveling system continues to operate incorrectly or fails to operate, check for pneumatic and/or compressor module problems, as appropriate.