2009 Toyota Tundra Owners Manual - Page 606

5 -2 . St e ps t o t a k e in a n e m e rge nc y I f you lose your ke ys New genuine Toyota keys can be made by your Toyota dealer using the key number stamped on your key number plate. Vehicles with engine immobilizer system, the dealer will also need the master key. (→P. 42) n If you lose all your master keys. (vehicles with engine immobilizer system) You cannot make new keys; the whole engine immobilizer system must be replaced. 580