What does 'hold' on a car key mean?

[LeEmilia]

There are two functions for 'hold' on a car key: one is to long-press to open the trunk, and the other is to remotely start the engine. The long-press to open the trunk function simplifies the process of opening the trunk after opening the car door; the remote start engine function allows you to press and hold for 2 to 3 seconds from a distance, and the car will start automatically. The remote start engine function can be used to adjust the interior temperature in advance during winter and summer. For example, in summer, you can set the air conditioning temperature before leaving the car, and when you return, you can start the car remotely to cool down the interior in advance, so that it won't be too hot when you reach the car door. In winter, you can warm up the car in advance, so that the engine temperature is normal when you get in, avoiding idling in place or engine wear caused by low temperatures.