How Does Volkswagen's Keyless Entry System Work?

[StReese]

Volkswagen's keyless entry system operates as follows: Before entering the vehicle: It relies on radio frequency identification (RFID) technology, which identifies the smart chip signal in the car key. The anti-theft computer verifies the key's legitimacy and then controls the door unlocking via bus technology. Simply put, when the owner with a valid key enters the effective recognition range of the vehicle, the anti-theft computer confirms the key's legitimacy, and the doors automatically unlock while disabling the anti-theft system. After the doors are unlocked: Once the doors are unlocked and the driver enters the vehicle, the interior detection system checks and verifies the key's legitimacy. Upon confirming the key is valid, the vehicle's computer system activates. When the driver presses the engine start button inside the car, the engine starts and operates normally.