2020 Toyota Tundra — steering wheel shakes only under highway braking

Start with the test that can prove you wrong. Swap the cheap/easy piece first on the 2020 Toyota Tundra and see if the fault moves. If the cheap test changes it, stop and reassess. Verbal 'we'll take care of it' is not a plan. Only after sitting overnight so far.

If it were in my driveway, get a real battery/charging test on the 2020 Toyota Tundra, not just resting voltage, before blaming a module. Don't erase codes until someone who can help has seen them. Take it or leave it — that's what I'd do. Happens in gear, not in park, for what that's worth.

Log the conditions before you spend. Two 2020 Toyota Tundras can feel identical and have different causes, so measure before you copy someone else's repair. Save the big job until that test fails. On “steering wheel shakes only under highway braking,” that was the fork that mattered for me. Not gospel, but it saved me a headache. Video is ugly but it shows the hesitation.