One problem related to warnings has been reported for the 2023 Toyota Sequoia. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2023 Toyota Sequoia based on all problems reported for the 2023 Sequoia.
A water leak was identified in the front left pillar from the support handle. It was sent in to olympia Toyota who believed that body work was needed. The vehicle was then transferred to titus Toyota in tacoma. The assessment in tacoma was very different than that in olympia, and the vehicle was sent in to repair without first making contact with the owner. The assumption is that water is leaking in through a defect in the roof railing system. Multiple alerts have deployed: air bag warning, pre-collision system warning, lighting warning. The extent of the water leak has not been identified, and has likely compromised these systems including the electrical system. Toyota USA also has a class action law-suit regarding their rav-4's, where there are consistent leaks due to the roof-rails, and this vehicle has a similar (but as yet unproven) design. I have attempted to contact Toyota USA and they have not replied.