Rolling Code

The keyless entry system uses a system called rolling code. When the transmitter and the RKE module are initially programmed, a code is established that is unique to the transmitter and the module. Each time thereafter when the transmitter is used, within range of the module, a new code is used. The transmitter sends the code to the module, the module recognizes that it is from a programmed transmitter and it learns the new code.

When the transmitter goes out of synchronization with the module and you have to re-synchronize it, the module recognizes the transmitter as a programmed transmitter and establishes a new code sequence with the transmitter. Each transmitter that is programmed to the module has its own unique identification.