Lift the sensors out of bObsweep. All four are wired to the same circuit plug.

You will need to feed some of the wires underneath the main board to get the entire piece out.

Detach the multicolored circuit plug which connects the sensors to the main board to remove the part fully.

There are two plastic parts inside bObsweep that stay inside when replacing the floor sensors. If they are accidentally removed with the floor sensor piece, place them back inside.