What is the RAV4 "Lock" button?

Question

What does the lock button on the dashboard do?

Answer 1

is it a 2wd or 4wd?

Answer 2

It turns the all-wheel drive system into a 4 wheel drive. You use it if you're stuck in snow or mud. 4 wheel drive gives better traction under slippery conditions.

Answer 3

diff lock switch.  DONT use it unless your in a mud bog or snow bank.  It locks the diff so the wheels turn at the same time.  Murder on your axel if your turning.