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Can a Lost BMW Car Key Be Located and Retrieved?

1 Answers

StCooper

07/29/25 11:54pm

BMW keys cannot be located after being lost. The basic components of a remote key consist of the following two points: 1. Transmitter: Composed of a transmission switch, transmission antenna, integrated circuit, etc., it contains an identification code storage circuit and an amplitude modulation circuit, with a button-type lithium battery installed on the opposite side of the circuit. The transmission frequency uses radio waves, and the transmission switch sends a signal once per button press. 2. Receiver: After the transmitter sends the identification code using shortwave modulation, it is received by the car's shortwave antenna and enters the shortwave high-frequency amplification processor of the receiver's electronic control unit via a distributor for demodulation, where it is compared with the demodulator's identification code.

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How to Adjust Citroën Rearview Mirrors?

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Is Lynk & Co a Joint Venture or Domestic Brand?

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