My truck is the same. The FOB is required to start and drive the truck. The FOB's from the dealer run around $200.00 with programming. Some dealers will not program FOB's purchased online. Also there is a maximum of 4 FOB's that can be made and when that maximum hits the limit and you require another FOB, the cost of reprogramming the system for new FOB's will take a big bite out of the wallet.

Needless to say that when we purchased the truck last year, part of sale was they included 2 more FOB's along with the 2 originals. When venturing into the back country, minimum of 3 FOB''s are taken with us.