Compatible with:
Compatible with 2011-2019 Ford Explorer
Compatible with 2009-2014 Ford F-150
Compatible with 2009-2014 Ford Lobo
Compatible with 2010-2014 Ford Mustang
Compatible with 2013-2019 Ford Police Interceptor Sedan
Compatible with 2013-2018 Ford Police Interceptor Utility
Compatible with 2019 Ford Police Responder Hybrid
Compatible with 2014-2018 Ford Special Service Police Sedan
Compatible with 2019 Ford SSV Plug-in Hybrid
Compatible with 2013-2019 Ford Taurus

Compatible with 2010-2014 Lincoln Mark LT
Perfect fit - no modification, directly replace the old product.
Perfect function - before mass production, through numerous actual vehicle testing experiments to ensure the original function.
High quality - made of durable materials, corrosion resistant, not easy to damage.
Door lock that functions with passenger-side switch but not driver-side? It's likely the driver-side switch.
Door lock that functions in only one direction? It's likely the door lock actuator or the wiring leading to it. You can remove your door panel to see if the actuator has seized or to inspect the wiring.
All door locks function in only one direction? It's likely the door lock switch.
None of the door locks work in either direction? Check for a blown fuse.