Acura 2009 Accord Sedan - Manual (Page 198)

To remove the built-in key, pull it out
while pressing the release button. To
reinstall the built-in key, push the
key into the remote until it clicks.
To avoid damaging the remote and
the built-in key, never pull on the
built-in key unless you are pressing
the release button.
The keyless access system uses an
electric field to identify the remote.
If you use medical equipment such
as a cardiac pacemaker, ask your
doctor if the electric field used by
the remote will affect it.
The trunk and glove box cannot be
opened when you turn the trunk
main switch off and lock the glove
box and trunk pass-through cover
with the built-in key. Then, the trunk
cannot be opened by using the
remote or the exterior trunk release
switch.
Remove the built-in key from the
remote by pressing the button, then
give that remote to someone else as
a valet key.
Valet Function
Keyless Access System
192
RELEASE BUTTON
BUILT-IN KEY