AFAIK, I don't think you have a bm24 mate, you have the older navigation radio, and this does not have TMC, you will need to upgrade to a bm24 or a bm54.

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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.