One problem related to wiring has been reported for the 2015 Toyota Sequoia. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 Toyota Sequoia based on all problems reported for the 2015 Sequoia.
Wiring harness was chewed on by rodent. Toyota will not pay for fixing brand new vehicle. Found several other complaints online after Toyota has moved to "plant-based" materials for wiring harnesses. Having electrical issues with vehicle with only 11k miles.