3 Buttons 315MHZ ID46 Chip Remote Key Board for BMW CAS2 5 Series
1 The board defaults to 315FSK, and the light flashes once
2 Start switching, press and hold the lock button to install the battery, wait until the light is always on, release the lock button, press the lock button 433FSK again, and wait for 2 flashes
3 Press the lock button twice, 315ASK, wait for 3 flashes,
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