travisthompson 
2007 Toyota Tundra CrewMax Cab SR5 4dr CrewMax 4WD SB (4.7L 8cyl 5A)
Hosed . . . 
 Love the style, look and (when it's right) performance of this truck.I work out of state and put tons of miles on my vehicle, as well as drive it off road quite a bit, making 4wd drive a necessity.After returning from a trip, my 4wd locked up in 4 low - I took it to my local Toyota Dealer who informed me that this is a known problem if you drive your 4wd Tundra anywhere it is wet or cold - this was corroborated by several of the other techs at the Toyota dealership.I contacted Toyota and they said that although there is a known problem, it's not covered under the warranty.$2400 later, my 4wd works, but we've learned our lesson.This model just isn't right.