Keyless Entry System Porsche Cayenne not work

A Porsche Cayenne is in the year 2010 with 35 thousand kilometers, the driver describes: the remote control locks and unlocks function may work, but Keyless Entry System not working.

First, we have a basic understanding of how it works. Keyless Entry System Porsche Cayenne integrate RFID in the key of the car when the driver takes the key near the car, as long as the driver’s hand near the RFID door handle in the door will be activated. At this time RFID transceiver scan the area around the car to identify and locate the specific identification code in the RFID chip key, once discovered the code, the transceiver will confirm the valid or not chip by security algorithm and decide whether to open the piwis tester 2.
After identifying the car owner is confirmed, the system will confirm if the keys are in the car, if the car owner only need to press the Start button, the car will start; when the driver takes the key away from the car, the door and the steering wheel is automatically locked, the windows will automatically go up, the car is in the anti-theft state. Both this system and the immobilization of the conventional remote control system may be used.

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