Entry Interior Alarm does not Sound: Description
WARNING: This page is about a different car, the 2010 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
Each of the smart key system's warning uses the warning buzzer in the combination meter to alert the driver.
The combination meter repeatedly sounds the warning buzzer when one of the following occurs: 1) the activation conditions for the smart key system warning are met, or 2) the certification ECU sends a warning buzzer signal via the CAN communication line to the combination meter (meter ECU).