Hey all. First time posting.(2008 Sequoia 5.7 4x4) I have followed and used many of your fixes so thank you all for posting. I have searched and can't seem to find anything directly related to my issue. When I try to engage 4Hi the center diff light comes on immediately and flashes, then the 4HI light starts flashing and the 4WD never engages. Anyone seen this specifically and know the fix. I have seen somethings with the actuator motors being corroded but don't know if this is the same because no one mentions the center diff light blinking. Thanks again!