1996 Mercury Grand Marquis Owner's Manual - Page 58

Air Suspension Light (If equipped) This light tells you if the air suspension needs repair or if the air suspension switch (in the trunk on the right side) is OFF. Normally, the light will glow momentarily as you turn the ignition key to the ON position. If it glows continuously: 1. Safely pull off the road as soon as possible. Turn the ignition key from ON to OFF and ON again. If the light still glows, check to see if the air suspension switch is OFF. If it is OFF, push the switch ON. If it is ON, push the switch OFF and have the system checked as soon as possible. 2. Check Engine Warning Light The Powertrain On-Board Diagnostic II (OBD II) system consists of the hardware and software necessary to monitor the operation of the powertrain. The OBD II system is designed to check the function of the vehicle's powertrain control system during normal operation. If an emission problem is detected, the Check Engine Warning Light (in the cluster) is turned on. Modification or additions to the vehicle may cause incorrect operation of the OBD II system. Additions such as burglar alarms, cellular phones, and CB radios must be carefully 55