Why is there no response when pressing the one-button start?

[McSerenity]

When the smart key of the vehicle runs out of battery, the key's transmission power becomes very low, making it difficult for the in-car sensor to detect it. As a result, the one-button start cannot complete the ignition. Below is an introduction to the one-button start system: 1. Principle of one-button start: It uses Radio Frequency Identification (RFID) technology, which automatically locks and unlocks the doors by sensing the chip in the smart card carried by the owner. When the owner approaches the vehicle, the car automatically recognizes the owner's identity, and the door locks will open automatically while disabling the anti-theft system—eliminating the need to search for keys in pockets or handbags. 2. Keyless start still has a keyhole: Vehicles equipped with a keyless entry system usually have a sensor button on the door handle, along with a keyhole. This is a backup in case the smart card is damaged or out of battery, allowing the owner to open the door in the traditional way.