Cadillac 2011 DTS Owner's Manual page 108

Replace the battery if the REPLACE BATTERY IN
REMOTE KEY message displays in the DIC. See
REPLACE BATTERY IN REMOTE KEY under DIC
Warnings and Messages on page 4 62 for additional
information.
3-6
To replace the battery:
1. Separate the transmitter with a flat, thin object
inserted into the notch, located above the
metal base.
2. Remove the old battery. Do not use a metal object.
3. Insert the new battery, positive side facing up.
Replace with a CR2032 or equivalent battery.
4. Reassemble the transmitter.
The remote vehicle starting feature allows you to start
the engine from outside of the vehicle. It also starts up
the vehicle's automatic climate control system. When
the remote start system is active, the climate control
system will heat and cool the inside of the vehicle
according to the previous settings of the system before
turning the vehicle off. The rear window defogger will be
turned on by the climate control system when it is cold
outside. If the vehicle has heated seats, they will also
turn on when it is cold outside. See Heated and
Ventilated Seats on page 2 5 for additional
information. Cooled seats are not activated during a
remote start. Normal operation of the climate control
system will return after the key is turned to ON/RUN.
See Dual Climate Control System on page 4 33.