Do I have to stop to switch from 2wd to 4wd in 2004 rav 4?
Your year make & model appears to be 'full time 4wd' which means all wheels are driven all the time. The button you see on your dash is probably the "Center Diff Lock" button, which would lock the center diff, like in a 4wd truck with a selectable transfer case. It shouldn't be used on concrete. It could probably be engaged while moving below 10-15 mph, but you will probably find the information in the owner's manual.
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