One problem related to wiring has been reported for the 2003 Toyota Sequoia. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Toyota Sequoia based on all problems reported for the 2003 Sequoia.
Wire that goes into wiring connection to a/c fan motor is on side near bottom of motor and is exposed to excess wear when feet are placed in foot well as toe-end of shoes can contact/wear against the wires. The wiring also has to go through a sharp 180 degree turn to enter connection. Insulation on wiring failed and conductors shorted, partially melting the connector and produce an acrid smell. Fuse did not open. Wiring and/or connector must be replaced.