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.Installation
INSTALLATION
PROCEDURE
1. INSTALL DRIVE MONITOR SWITCH
(a) Engage the 4 claws to install the driver monitor switch.
2. INSTALL RADIO AND DISPLAY RECEIVER ASSEMBLY WITH BRACKET (for Radio and Display ...
Dtc Check / Clear
DTC CHECK / CLEAR
1. CHECK DTC
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Sliding Roof / Trouble Codes.
(e) Check the details of the DTC(s) (See ...
Evaporative Emission System Switching Valve Control Circuit High (P2420)
DTC SUMMARY
DTC No.
Monitoring Item
Malfunction Detection Condition
Trouble Area
Detection Timing
Detection Logic
P2420
Vent valve stuck open (vent)
Follo ...