Functions: Remote Keyless Entry, Anti-Theft, Door Ajar Dash light and interior/exterior courtesy lamp operation.  Also sends signal to radio to turn off when door opened.

OEM Part Numbers: 

4L3T-15604-AE

4L3T-15K602-AE

4L3T-AE

4L3Z-15K602-AA

5L3T-15604-BA

5L3T-15604-BB

5L3T-15K602-AA

5L3T-AA

5L3T-BA

5L3T-BB

5L3Z-15K602-A

5L3Z-15K602-AA

5L3Z-15K602-BA

Tested and Guaranteed fully functional