Section 452 (Key Reminder Warning System - Diagnostics)

WARNING: This page is about a different car, the 2005 Lexus RX 330. However, it is still accessible from the selected car via links, so may be relevant.

Precaution
How To Proceed With Troubleshooting
Customer Problem Analysis Check
Pre-Check
Location
Terminals Of Ecu
Problem Symptoms Table
Key Reminder Buzzer Does Not Sound