What Causes Keyless Entry Failure in Cars?

[VanRichard]

Keyless entry failure in cars may be due to a dead key fob battery, a depleted car battery, malfunctioning sensor modules, or nearby interference sources. Regardless of subsequent troubleshooting or repairs, the first step is to use the backup mechanical key to unlock the door. Here is information about the car keyless entry system: 1. Introduction: The car keyless entry system, abbreviated as PKE (PASSIVE-KEYLESS-ENTER), utilizes the world's most advanced RFID radio frequency technology and vehicle identity coding recognition system. It pioneered the development of miniaturized, low-power RF antenna solutions. 2. Working Principle: When the owner turns the key to start the vehicle, the base station emits a low-frequency signal to initiate the authentication process. The transponder in the key fob derives its operating energy from the base station's low-frequency signal. During authentication, the transponder first sends its own ID number. After verification by the base station chip, the base station transmits a random number string and MAC address, to which the transponder responds.