Cadillac 2004 XLR - Manual (Page 65)

If power to the vehicle or the keyless access transmitter
is lost, there are two ways to open the door.
If you are inside the vehicle, use the door release
handle located on the floor next to each seat. Pull the
handle up to unlock and unlatch the door.
If you are outside the vehicle, there is a door release
tab in the trunk. The tab is located behind a panel on the
driver’s side of the trunk. Pull the handle to unlock
and unlatch the driver’s door. See
Trunk on page 2-11
for information on opening the trunk during a loss of
power.
2-9