To change the auxiliary air temperature actuator, to begin with, you need to remove the left rear quarter trim panel. Unplug the electrical connector for the air temperature actuator, and remove screws and take out the actuator. For installation, install the new air temperature actuator and install rifle screws and tighten up to 1.9 N.m (17 lb in). Reattach the right rear brake hose from the rear strut with the hand release, then recharge the right rear brake per the proper procedures using MB SST 000 424 90 50, apply 520 SAE30 oil into the reservoir until the oil supply is covered, then recheck the S-sensor oil level. View PIC and adjust the slack on the front brake hose S-sensor when the hand release is disconnected in the rear.