why does the car music pause when starting the engine?

Question

You turn on the electricity, and the music starts playing. When you start the engine, the music has to pause for a brief moment before continuing after the engine has finished starting. Why is that?

In: 22

Answer 1

Before the engine starts, all of the power comes from the 12V battery. When the engine is starting, a lot of current is drawn from the battery, which causes a drop in voltage. As the starter motor is trying to start the engine, this adds a great deal of noise (fluctuations in voltage). The irregular and noisy voltage during the engine start can be unsafe or hard on electronics in the car, so they’re temporarily disconnected until the engine is started and the alternator is providing a steady supply of power (or it’s back on battery).