2010 Acura TL Owner's Manual - Page 198

Keyless Access System Built-in key and Remote The built-in key can be used to lock/ unlock the doors and the trunk when the remote battery becomes weak and the power door lock/unlock operation is disabled. BUILT-IN KEY 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. Valet Function 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. Instruments and Controls RELEASE BUTTON 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. 195 2010 TL