What does the 'hold' function on a car key mean?
1 Answers
Car key 'hold' refers to the function of long-pressing to open the trunk. By holding the 'hold' button for a few seconds, you can easily open the trunk, simplifying the process of opening the car door first and then the trunk. The requirement to hold the button for a few seconds to open the trunk is designed to prevent the danger of accidentally opening the trunk while the vehicle is in motion or under other conditions. For some cars, the 'hold' button also serves as a remote engine start button. By holding it for 2 to 3 seconds within a certain range, the car will start automatically. Car keys can be categorized into three types based on their operation methods: active operation, passive operation, and coil induction. The principle of active operation involves controlling the car door through the vehicle's electronic module and body control module. Coil induction operation mainly involves placing an encrypted chip inside the key. During the unlocking process, the vehicle's radio frequency transceiver verifies whether the key matches to determine if the engine can be started. Passive operation works when the owner enters the sensing range of the key system. As soon as the hand touches the door handle, the identity-recognition 'key' carried by the owner will receive a low-frequency signal sent by the car. If this signal matches the identity information stored in the 'key', the 'key' will be activated.
