2013 Toyota Tundra Regular Cab Owners Manual - Page 609
2013 Toyota Tundra Regular Cab Manual
Page 609 highlights
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. 44)