MAZDA 6 2014 up and Mazda CX-5 ( radio stay on when you turn off your car ). Shifter Switch Problem.

How to fix the accessory problem when you turn off the car and the radio stays on. ( If your start button flashes when you step on your brake pedal with an amber light before starting your vehicle and your radio stays on when you turn off your vehicle, it is because you need a new shifter switch ).