3+1Buttons 95440-C1000N Car Remote Key for Hyundai Sonata

Tips

BLE pairing process:

Bluetooth pairing between the Bluetooth key and the car includes three connection processes. The process of using BLE OOB pairing to establish a car owner pairing connection is as follows:

The first is the device Bluetooth link layer connection:

The vehicle host starts sending ADV_IND (broadcast) and uses CCC-DK-UUID (unique universal identifier of CCC DK) as the broadcast payload. The vehicle LL (link layer) is in the broadcast state and the filtering policy is set to accept all broadcast connection requests. The device host starts passive scanning. The device LL should be in the scanning state. Its filtering policy should be to accept all broadcasts. Once the device LL receives a broadcast, it forwards it to the device host. The device host should check whether the CCC-DK-UUID is included in In the broadcast payload, if the payload contains CCC-DK-UUID, the user is notified. If the user accepts the owner's pairing request, the user should provide the pairing password. After 14 steps, the device LL will enter the startup state and the filtering policy is set to The address broadcast by the client. When the device LL receives the next identical broadcast, the device LL will send a connection request.