2009 Mercury Grand Marquis Owner's Manual - Page 16

Instrument Cluster Low tire pressure warning: Illuminates when your tire pressure is low. If the light remains on at start up or while driving, the tire pressure should be checked. Refer to Inflating your tires in the Tires, Wheels and Loading chapter. When the ignition is first turned to on, the light will illuminate for three seconds to ensure the bulb is working. If the light does not turn on, have the system inspected by your authorized dealer. For more information on this system, refer to Tire pressure monitoring system (TPMS) in the Tires, Wheels and Loading chapter. Air suspension (if equipped): Illuminates when the air suspension is turned off, the load limit is exceeded or the air suspension system requires servicing. Low fuel (if equipped): Illuminates when the fuel level in the fuel tank is at or near empty (refer to Fuel gauge in this chapter for more information). O/D off: Illuminates when the O/D overdrive function of the OFF transmission has been turned off; refer to the Driving chapter. If the light does not illuminate, have the transmission serviced soon, or damage may occur. Speed control (if equipped): Illuminates when the speed control is activated. Turns off when the speed control system is deactivated. Door ajar (if equipped): Illuminates when one of the doors is not completely shut and the ignition is turned to on. With the ignition in the on position, a tone will sound for one second (if a door is open). 16 2009 Grand Marquis (grn) Owners Guide (own2002), 2nd Printing USA (fus)