The one you should change out is the flat switch on the valve body or at least get some electrical cleaner and clean out all the clutch material thats built up on the plungers ...its a 8mm and 10mm socket. Onnce the bolts are removed lay your hand flat on the switch and twist it to remove it . If any of the rubber orings stick tonthe vslve body replace the switch. The dealership should have them for about 40.00. Then reattach it and all 5 bolts are 8ft lbs torque. Or hand tight with a half a ratchet turn