Using FCC ID to Search for Correct Replacement Factory Keyless Entry and Aftermarket Alarm Remotes

Many people know that one of the useful reference numbers on an automotive remote key fob is the FCC ID. The FCC ID represents a federal government registration that is somewhat specific to the technology in a remote. Specifically, it means that the radio frequency transmission characteristics of the keyfob have been tested by a lab and registered with the Federal Communications Commission. Two different remotes with the same FCC ID may and sometimes do transmit different signals and thus not be compatible with each other, but it is more common for remotes with the same FCC ID to be interchangeable, especially with respect to aftermarket alarm system remotes. That is why it can be a good starting point when searching for a replacement remote control.

As examples, Toyota remotes with FCC IDs GQ43VT14T (see link here) and GQ43VT20T (see link here) are interchangeable with other remotes that have the same FCC ID. Likewise, all of the Chrysler remotes with FCC ID GQ43VT5T are interchangeable with each other. However, this is not true of the Chrysler and Dodge remotes that have FCC ID GQ43VT9T. So, if you are buying a car remote, though, you still have to be a little bit wary.

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