Drive Cycle Diagnostics

This part of the diagnostics will light the CHECK SUSPENSION warning indicator in the message center if a malfunction is detected in the system while driving the vehicle. Up to 32 diagnostic trouble codes (DTC) will remain stored in memory for up to one hour after the ignition switch is turned to OFF. The air suspension service switch in the luggage compartment must remain ON during this time. The DTCs should be written down at this time. If the vehicle has not been driven in over an hour or the air suspension service switch has been turned OFF, the vehicle must be driven with the air suspension switch ON to try to duplicate the condition.