I dont know if this will be of help but I have an 04 4X4 TAcoma. It has the push button for High on the transfer case shifter. You can shift into 4 high only when the transfer case shifter itself is in the high position (all the way back which is normal two wheel drive), neutral is middle, and 4 low is all the way forward. I personally dont like it, its like a contradiction-you have a lever to engage your transfer case but only for use for four low. It just seems like something else to break to me.