Comfort and Convenience
Power mirrors are always active once the ignition allows them: the switch does not turn a feature on, it moves the glass. Aiming each mirror is a setting; power folding is a separate, repeated retraction.
Safety and Driver Assistance
Emergency brake assist only raises hydraulic pressure after the driver presses the pedal hard. It shortens nothing before that input, so the gap ahead still has to cover reaction time and tyre grip.
Multimedia and Connectivity
The audio system handles the sound signal itself, decoding a broadcast or stored track and driving the speakers, whereas Bluetooth carries that content wirelessly from a phone rather than producing it.