What are the functions of Audi's Comfort Key?

[Una]

Audi's Comfort Key features one-touch start, keyless entry, and hands-free trunk opening. One-touch start function: For vehicles equipped with a one-touch start key, there is an emergency ignition feature when the key battery is dead. Place the key in the designated position, press the brake pedal normally, and press the one-touch start button to ignite the engine directly. Keyless entry function: You need to carry the car key. When the key approaches the car, it will automatically pair with the car's decoder. Press the unlock button on the door handle to unlock the car. Hands-free trunk opening function: Generally, with the key on your person, the driver only needs to sweep their foot under the rear bumper sensor, and the trunk lid will open automatically.