Comfort and Convenience
The listed Engine Start Button only completes the ignition circuit once the keyless entry system confirms the fob is inside. It replaces the key barrel; it does not alter how the single-zone climate control or on-board computer behave.
Safety and Driver Assistance
The listed electronic stability program acts when the car's yaw differs from the steering angle, braking individual wheels to pull the vehicle back onto the intended line before a slide develops further.
Multimedia and Connectivity
The listed USB connection carries a wired data and power link for stored media and devices, whereas the listed Bluetooth function handles the same audio and calls wirelessly, without supplying any charging current.