The epc and check engine light might display on your dashboard simultaneously in which case the most likely culprit is a loose electrical connection or a faulty sensor e g crankshaft position sensor or camshaft shift sensor.
Audi brake lights come on by themselves.
So the bcm can command the brake lights come on by themselves or go off when you apply the brake.
Your audi will go into limp mode to protect itself from damage.
The side assist helps you monitor the blind spots.
It is normal for audi abs light to flash a few times for example when the vehicle starts to slip during hard braking.
Audi side assist blind spot monitor.
Under normal conditions the abs light will only come on for a couple of seconds when you turn on the ignition then turn off.
Audi abs malfunctions can also trigger the brake esc or edl lights to come on at the same time.
In this service bulletin gm reveals that increased resistance between the bcm and brake pedal switch results in voltage fluctuations that can cause the bcm to misinterpret the brake pedal switch signal.
When audi abs light stays on it means there is a problem with the anti lock brake system abs.
The yellow circle with two dashed lines indicates that your audi brake pads are worn.
Gm service bulletin 16188 01 special coverage for brake lights come on by themselves.
Brake light may also turn on at the same time.