The '06 Camry, for instance, does have a service reminder dash light that begins to flash immediately after start up beginning at approx. 4,800 miles. At 5,000 it comes on and stays on. Thankfully the reset instructions are provided in the owner's manual.
Too, dealers currently are putting the full court press on new car buyers promoting Toyota's "tires for life" program, requiring car owners to come to the "stealership" at 5,000 mile intervals for oil changes and tire rotation. Toyota then will presumably replace your tires at no cost "when needed." (When the dealership thinks the tires need to be replaced.) I imagine by the time you've paid for all those oil changes, tire rotations, and they've upsold you on every other kind of imaginable service procedure you've long since paid for a set of tires.
I opted out of the "tires for life" promotion. I didn't want to be put in a position of arguing with some service manager that it was time for a tire replacement; I'm more picky about when I replace my tires than many people I suspect.