Secondly, to replace the defroster actuator, take off the IP carrier. Next, detach the blue vacuum hose and the green vacuum hose from the defroster actuator, paying particular attention to where they are located and in which order. After that, hold the actuator lock tab and slide against the actuator. Compress the tabs and pull the actuator linkage off the defroster door. To install, mount the actuator linkage to the defroster door, then slide on the defroster actuator onto the mounting bracket until the tab locks. Reconnect the blue vacuum hose and the green vacuum hose to the defroster actuator, and finally, install the IP carrier.