Cadillac 2011 STS Owner's Manual page 270

This message displays when the keyless access
transmitter is not detected inside the vehicle while you
are trying to turn the ignition off. Your vehicle may be
near a strong radio antenna signal causing the keyless
access system to be jammed. The vehicle remains in
ACCESSORY until OFF or START has been pressed or
10 minutes has expired. If you turn the ignition off and
you cannot find the keyless access transmitter, you will
not be able to restart the vehicle. The keyless access
transmitter needs to be inside of the vehicle in order for
the vehicle to start. See Starting the Engine on
page 3 27 for more information.
This message displays when the vehicle's engine oil
pressure is low.
4-84
A multiple chime sounds when this message is
displayed. See Engine Oil on page 6 16 for more
information.
Stop the vehicle immediately, as engine damage can
result from driving a vehicle with low oil pressure. Have
the vehicle serviced by your dealer as soon as possible
when this message is displayed.
This message displays when the passenger side front
door is not closed completely. Make sure that the door
is closed completely.
This symbol appears
with this message.