Mine started doing it right after I had the tires rotated. Not sure if this applies to the problem or not.
No, Flashing your headlight's will have no effect on a traffic signal. The reason a traffic signal changes for emergency vehicles that have the lights flashing, is, they have a special transmitter that tells the light to change. This transmitter is connected to the emergency lights so it comes on when the lights are used.
It is important to know why flashing lights come on in a vehicle. When a transmission light comes on it can mean that there the fluid is low, or that there are other issues.
Fuse
It has been my experience that when the blinker comes on but the lights don't blink there is one or more bulbs burned out. If that is not the case check the flasher.
The check engine light comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, a check engine light is lit when there is a problem in the emissions or somthing that is affecting the effectiveness of the emissions. If the check engine light is flashing a misfire has been detected
Answer location of check gauges lightthe check gauges light is on your instrument panel when it comes on it lights up saying check gauges
The check engine light comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, a check engine light is lit when there is a problem in the emissions or somthing that is affecting the effectiveness of the emissions. If the check engine light is flashing a misfire has been detected
Check your engine light and if that doesn't work go to your dealer.
A low battery can cause the electrical system to flash check engine lights
The brake indicator light tests continuity to your brake lights and activates if continuity is broken. This means one of the bulbs is out or there is a problem in the wiring to the lights. The light also comes on when you start your car and stays on for a few seconds along with the flashing "check" signal on your dash. If you wait or push the check button above your rear view mirror the lights should go out. If the brake indicator light doesnt go out check your brake lights and make repairs if necessary. The light should function correctly after the bulb is replaced or wiring is repaired. If not you may have a malfunction in your active check control system wich is behind the panel of lights above your mirror.
Vehicle warning lights are like traffic lights - green = go, Yellow = warning, Red = Stop the vehicle!!. Most vehicle manufacturers recommend that if the Check Engine Light Comes on the vehicle is safe to drive to your nearest repairer.. G'day fro Aus!!
If the VSC flashing light comes on at the same time on your Toyota Corolla, then there might be a sensor issue, and if you have a warranty, have it back to the manufacturer.