Toyota TSB #T-TT-0571-19
2020 Toyota Sequoia
Affected Component: ELECTRICAL SYSTEM
- TT: Some 2020 model year Tundra and Sequoia vehicles may experience a B15DB or intermittent Wi-Fi inoperative (Wi-Fi icon greyed out). To simplify the diagnosis of the inoperative Wi-Fi, refer to the procedure below to prevent unnecessary parts replacement.