Continuously Variable Road Sensing Suspension (Cvrss)

The CVRSS module is able to detect the majority of electrical problems in the CVRSS suspension damping control system. All detectable faults cause the SERVICE RIDE CONTROL message to be displayed. Mechanical, hydraulic and pneumatic problems generally do not cause storage of fault DTCs. Additionally, it is important to note that the vehicle ride and handling characteristics are influenced by a number of factors, including tire inflation and leveling system operating pressure.

Therefore, if a complaint of harsh, soft, or inconsistent ride occurs, always begin the diagnostic procedure by displaying fault DTCs and repairing any system faults which are recorded (refer to ROAD SENSING SUSPENSION DIAGNOSTIC SYSTEM CHECK). If the vehicle ride continues to be objectionable after all fault DTCs are addressed and cleared, check for problems in the following areas:
^ Tire Pressure: Ensure that tire pressure is within the manufacturer's suggested guidelines. Overinflated tires are a very common cause of additional (undesirable) ride harshness
^ Leveling System Operating Pressure: Ensure that the leveling system is operating correctly and that the rear air sleeves contain at least the minimum retention pressure (refer to the Automatic Level Control Section)
^ Suspension Mechanical or Hydraulic Problems: Thoroughly inspect all suspension components for loose/broken mechanical connections, abnormal wear conditions, or fluid leakage, and repair as necessary (refer the REAR SUSPENSION).