How to Match a Car Remote Key?

1 Answers
IrisAnn
07/30/25 4:05am
Go to a 4S shop or a professional car lock company for matching. The basic components of a remote key are as follows: 1. Transmitter: Composed of a transmission switch, transmission antenna, integrated circuit, etc., containing 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 the transmission switch button sends a signal once each time it is pressed; 2. Receiver: After the transmitter sends the identification code using shortwave modulation, it is received by the car's shortwave antenna, and then enters the shortwave high-frequency amplification processor of the receiver's electronic control unit through a distributor for demodulation, and is compared with the demodulator's identification code.
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