Where is the trac off button n the 2003 toyota sequoia?

SOURCE: 2003 Toyota Sequoia 4WD

i have a 2003 sequoia ltd and i can tell you that the virtual traction control lights will come on after ignition and remain on as a result of anything that has affected your vehicle operation. from sensors to seals, the computer is designed to shut down the traction control if it has determined that any part of the engine/mechanical systems has malfunctioned. first it was the abs had to be reset after i slammed my brakes on. next i needed a new fuel/oxygen sensor, the passenger primary, and after having fixed both the traction control operates properly, lights go off after ignition and stay off. i think the vehicle operates more driver friendly when its off, because it doesn't go off every time one of the wheels slips. i expect it will happen next time something else malfunctions, its toyotas way of annoying you into their service shop. go to a tune-up shop, (minitune) instead they'll tell you whats wrong and it'll be cheaper.

SOURCE: 2004 Sequoia. VSC TRAC, TRAC OFF, and Check

It is not hard to change the sensor, it just screws into a threaded hole. The light will not go out immeditaly, after the sensor is replaced. It needs to go thru a drive cycle. Your best bet is to replace the sensor and get the code cleard by whoever scanned it for the 0031 code.

SOURCE: VSC TRAC, TRAC OFF and CHECk ENGINE lights

You have to know what code is stored to fix the problem. Toyota's will generally display a Check Engine light, VSC and TRAC light all at the same time, even if it's a simple problem with an oxygen sensor (for example). You can disconnect the negative battery cable for a few minutes, even though you should a scan tool should be used, to clear out the code.

SOURCE: trac light on 2002 toyota sequoia

You need to have the wheel speed sensors checked. If one is not reading the proper rPM of the wheels, it thinks that the other wheel is spinning, and the TRAC applies the brakes on that side.
A good tech with a good scan tool might be able to read the sensors, but, a Toyota tech is your best bet.

SOURCE: 2003 toyota sequoia radio error code 1.will not

Error one indicates a bad laser pickup, or a calibration issue. I would recommend a CD cleaner, but, if that does not help, the radio will need to be taken to an authorized service center. The 01 code is rather common to those radios.