Acura MDX 2017 Owner's Manual page 137

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
136
The built-in key can be used to lock/unlock the
doors when the keyless access remote battery
becomes weak and the power door lock/
unlock operation is disabled.
To remove the built-in key, slide the release
knob and then pull out the key. To reinstall
the built-in key, push the built-in key into the
keyless access remote until it clicks.