re: Atrac/Locker issue...am I on the right track here.
The light will blink until it is engaged, and sometimes it takes more time to engage if it is sticky from not being used for a while.
If I am reading the owner's manual correctly, you have to be going less than 5mph for the rear diff lock to engage, are you trying to engage it above that speed?
I recall from past threads that sometimes squirming the steering back and forth, while moving forward, helps the diff lock to engage, have you tried that?
Also, I am not sure that my understanding of the owner's manual correct, but does A-TRAC needs the rear diff lock to be off in order to function (it is like TRAC, but more aggressive, using the brakes so a locked rear diff would prevent its function)?