AAD Actuator
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
The RH is smart (lead) actuator and the LH is the dumb (follower) actuator. The smart actuator receive position requests from the PCM via the LIN communication network. The two actuator motors work in tandem to control the AAD blade. Each actuator is coupled to a screw drive, which in turn is connected to a bracket that is mounted to the AAD blade. Both actuators turn in unison to move the AAD blade up and down, while maintaining it in a level position. The AAD actuators can be serviced separately or can be serviced as an entire assembly.
The driver and passenger side AAD actuators are not interchangeable.