One problem related to brake disc caliper has been reported for the 2004 Toyota Tundra. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Toyota Tundra based on all problems reported for the 2004 Tundra.
Excessive rust pretty much everywhere. Just had to replace the rear differential and associated parts because rust caused differential leak. Cost was over 3,500. Replaced rusted brake lines and calipers. Tailgate wire rusted and broke. Opening mechanism to tailgate is rusted and is extremely difficult (if not impossible) to open/close. Rear bumper is rusted through, and not safe to step on. Hitch receiver is completely rusted and cannot remove hitch now. Skid plate and brackets rusted through - skid plate fell off. Dealer just inspected the truck and will be replacing the entire frame because of excessive rust.