The only job Maintenance Required has on the Tundra (that I have seen) is 5000 mile oil change interval (Flex Fuel) or 10,000 mile interval on non flex-fuel. Reset, and it comes back a bit before the interval is up. Probably far different from the 2022+ Tundra maintenance programming.
I've never seen one light up for anything else, but I probably haven't seen it all either. Critic may have some intel on other bits that might trip it.
This is far from the truth.
There is plenty of maintenance/inspection items listed in the maintenance manual of each Toyota. You just have to look for them. There should be ONE page in the OWNER's Manual that says "See Maintenance Manual" for all required maintenance.
Oil changes at 5k / 10k as you insinuated above are for PERFECT driving conditions/habits/behavior. I don't know of anyone that meets those conditions. They are clean, consistent highway speeds most of the time, stop-n-go urban or even suburban "interstate" driving does not qualify for "highway speeds". Very few short trips, very few times operating in cold/hot weather. Not sitting for long periods (more than 96 hours), no towing, very little stop and go...
Otherwise, oil changes should be done at 5k miles (for either engine as long as you don't succumb to using corn-based fuel) or 2500 miles if you have used anything above E-10.... I have a "Flex Fuel" 5.7L engine in my Tundra, it's never seen a drop of E85. I have done 8500-10k mile oil changes when I was meeting the optimal driving habits, now I do 5k miles or less oil changes.
Also - there IS maintenance noted in the manuals for gear oil, filters and..... transmission services along with greasing U-joints on the driveshaft, draining and refilling the radiator, and I believe power steering fluid. One thing that is not mentioned, IIRC, is flushing brake fluid. I realize this is a touchy subject where awesome, seasoned mechanics "have never flushed brake fluid", but they all seem to be able to suggest it as a suggested service at a shop.... I try to flush at least one axle every 36 months.
I highly suggest you service your "sealed" Asin Toyota transmissions and start before 100k miles. I won't say it's easy, but it's do-able with some tools, skills and knowledge. I'll be glad to help anyone get it done, I do my own and have over 100k miles on my trans services between 3 Toyotas in my driveway.
I must be pretty tight about maintenance on my Toyotas, I do much more than what seems like most people talk about, but I have put a combined 350k miles across several models and I haven't had one had to go to the shop yet for anything other than an alignment or tires.