Immobilizer Component Replacement Programming Procedures (PRIUS): Notes
WARNING: This page does not describe the selected car, but rather 17 other vehicles, including the 2003 Toyota Tundra, 2003 Toyota Tacoma, 2003 Toyota Sienna, 2003 Toyota Sequoia, and 2003 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Read service precautions before proceeding with any service procedure on engine immobilizer system. See SERVICE PRECAUTIONS (PRIUS) .
NOTE:
Proper procedure must be followed when replacing transponder key Electronic Control Unit (ECU) and/or hybrid vehicle control Electronic Control Unit (ECU).