Toyota Repair Problems? Ask a Mechanic for Answers ASAP
Are these the only warning lights on at this time?
They are supposed to turn on and then go off after the engine starts when the self test is completed.
Has anything been done recently to the suspension or brakes?
The VSC and ABS systems are actually integrated in one unit under the hood in the skid control ECU, you can easily see it, there will be a lot of steel brake lines going into what looks like a big aluminum block, the ECU is attached to it, there is also a large electrical connector on it, you may want to check this connector and the wiring to it.
Have you tried disconnecting the battery for a few minutes then see if the lights turn back on right away, if so it may be a wiring problem, if it takes a while to come back it may be a component failure, speed sensor, yaw rate or deceleration sensor but these would or should, set diagnostic codes.
Just a couple of more suggestions, make sure all the tires are the same size,
Check the wiring at each wheel for the wheel speed sensors for any damage
Sometimes there can be debris on one of the sensors or the pick up wheels inside the housing, maybe cleaning and inspecting the sensors will help and turn something up, there have been some cases where rust has formed on the reluctor wheels in the bearing housings and some rare cases of hairline cracks in one of the reluctor wheels.
Another option is to check with a scantool that can do an active test for each wheel speed sensor under actual driving conditions and give live date in road speed for each wheel.
When you put the jumper in those terminals do most of the dash lights flash?
Do you have an actual code number that says "zero point calibration undone"?