Ok, you can use that to push the ULF into pair mode.

You first need to assign the pair function, use setup (on display or keys), not sure which.

Use the long key press on the phone button, will be ideal.

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Sept 03, M3, Silver Grey. Retro-fits: Modded Mk4 DVD Drive, OEM Bluetooth, VR Control, Rainbow Speaker Upgrade, Sony SOT Amp, HK Sub, CCFL, Intravee II, NightMode.