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.Precaution
PRECAUTION
1. PRECAUTION FOR DISCONNECTING THE BATTERY CABLE
NOTICE:
When disconnecting the cable from the negative (-) battery terminal, initialize
the following systems after the cable is reconnected:
System
See Procedure
...
Rear Speed Sensor RH Circuit (C0210/33,C0215/34,C1273/73,C1274/74,C1332/38,C1333/39)
DESCRIPTION
The speed sensor detects the wheel speed and sends the appropriate signals to
the skid control ECU. These signals are used for the ABS control system.
Speed sensor rotors have rows of alternating N and S magnetic poles (for 2WD)
or 48 serrati ...
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 / Navigation System / Trouble
Codes.
(e) Check for DTCs (See page ).
...