The following warning indicates a possible problem in the brake system.
Immediately stop the vehicle in a safe place and contact your Toyota dealer.

If a warning light turns on or a warning buzzer sounds...
Stop the vehicle immediately.Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are listed in order of probability in the "Suspected Area" ...
Ignition Switch Circuit
DESCRIPTION
The main body ECU (driver side junction block assembly) determines the ignition
switch position (OFF, ACC, ON) based on signals from the IG or ACC circuit.
WIRING DIAGRAM
PROCEDURE
1.
READ VALUE USING TECHSTREAM
...
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE HOOD TO RADIATOR SUPPORT SEAL
(a) Using a clip remover, disengage the 10 clips and remove the hood
to radiator support seal.
2. REMOVE HOOD INSULATOR
...