Acura MDX Owner's Manual page 117

uuLocking and Unlocking the DoorsuKey Types and Functions
■
Keyless access remote
Models without two-way keyless
access remote
Release Knob
Built-in Key
Models with two-way keyless
access remote
Built-in Key
Release Knob
■
Key Number Tag
116
The built-in key can be used to lock/unlock the
doors when the keyless access remote battery
becomes weak or the power door lock/unlock
operation is disabled.
To remove the built-in key, pull it out while
sliding the release knob. To reinstall the built-
in key, push the built-in key into the keyless
access remote until it clicks.
Contains a number that you will need if you
purchase a replacement key.
1Key Number Tag
Keep the key number tag separate from the key in a
safe place outside of your vehicle.
If you wish to purchase an additional key, contact a
dealer.
If you lose your key and you cannot start the engine,
contact a dealer.