Smart Key Remote Fob Programming Guide – 2021 Toyota Sienna

Important Notice: This vehicle does not support onboard programming for smart key remotes. A certified technician with access to specialized equipment is required to perform the programming process.

Programming Instructions:

• Step 1: Arrange Service with a Qualified Automotive Technician To begin, schedule an appointment with a certified service provider equipped with professional diagnostic tools designed for smart key programming.
• Step 2: Consider the Most Cost-Effective Option If the vehicle is operable, driving it to the service location may help reduce fees associated with on-site visits or mobile services.
• Step 3: Diagnostic Connection and Smart Key Setup At the service center, a technician will connect an advanced diagnostic device to the vehicle’s onboard system. This tool securely interfaces with the vehicle to register and activate the new smart key remote.

Additional Notes:

• All Current Remotes May Be Required: Some systems mandate that all existing remotes be present during programming to maintain functionality. Proof of Ownership: If no functional keys are available, documentation verifying ownership—such as a vehicle title or registration—must be provided. Smart Key Battery Health: Ensure the new key fob has a fully charged battery before programming to prevent signal issues during setup. Push-Button Start Systems: If equipped, vehicles with this feature may involve extra verification steps during programming.