Caution / Notice / Hint

WARNING: This page is about a different car, the 2021 Toyota Tundra and 2020 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
Make sure that no DTCs are output. If any DTCs are output, proceed to Diagnostic Trouble Code Chart.
If the smart key system (for Start Function) has been canceled, enable the system before performing troubleshooting.
Refer to CUSTOMIZE PARAMETERS [08/2019 - ]
Inspect the fuses of circuits related to this system before performing the following procedure.
Before replacing the certification ECU (smart key ECU assembly) or an electrical key transmitter sub-assembly, refer to the Registration.
Refer to REGISTRATION [08/2019 - ]
After completing repairs, confirm that the problem does not recur.
After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".
An antenna coil is connected between the terminals of the indoor electrical key antenna.
The door control receiver is also involved in interior certification.

HINT:

If interior certification does not succeed, the History of Reason for Operation may remain in the certification ECU (smart key ECU assembly).

Refer to CHECK FOR INTERMITTENT PROBLEMS [08/2019 - ]