Cadillac 2004 XLR - Manual (Page 63)

Battery Replacement
Under normal use, the battery in your keyless access
transmitter should last about three years.
You can tell the battery is weak if the transmitter won’t
work at the normal range in any location. If you have
to get close to your vehicle before the transmitter works,
it’s probably time to change the battery.
A weak battery may also cause the DIC to display NO
FOBS DETECTED when you try to start the vehicle.
If this happens, place the transmitter in the glove
box transmitter pocket with the buttons facing to the
right. Then, with the vehicle in PARK (P) or
NEUTRAL (N), press the brake pedal and the START
button. Although this will start the vehicle, it is
recommended that you replace the transmitter battery
as soon as possible. The DIC may display FOB
BATTERY LOW.
Notice: When replacing the battery, use care not to
touch any of the circuitry. Static from your body
transferred to these surfaces may damage the
transmitter.
1. Insert a coin or similar object into the slot on the
back of the transmitter and gently pry apart the
front and back.
2. Gently pull the battery out of the transmitter.
3. Put the new battery in the transmitter, positive (+)
side up. Use a battery, type CR2032, or equivalent.
4. Reassemble the transmitter. Make sure to put
it together so water won’t get in.
5. Test the transmitter.
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