How to Enter an Audi Car Without Using the Key?
1 Answers
Audi's keyless entry system works as follows: When the key is near the car, the doors automatically unlock, and the anti-theft alarm is deactivated, while the turn signals flash twice. The basic components of the remote key consist of the following two points: 1. Transmitter: Composed of a transmission switch, transmission antenna, integrated circuit, etc., it includes an identification code storage circuit and an amplitude modulation circuit, with a button-type lithium battery on the opposite side of the circuit. The transmission frequency uses radio waves, and pressing the transmission switch button once sends a signal. 2. Receiver: After the transmitter sends the identification code using shortwave modulation, it is received by the car's shortwave antenna and processed through a distributor into the receiver's electronic control unit for demodulation, where the identification code is compared with the demodulator's code.