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Hello everyone,
Although I am new here, I have been following this thread for some time now. It is without a doubt a lot of research has been consolidated here. So thank you for your hard work. Anyways, I just purchased and signed for my first BMW today and I noticed there was no SOS button (so no bluetooth for me I guess). In doing some of my own research I can see that the BMW part # for the TCU has been superseded to 84109126533.
In the coming months I hope to contribute more information as I plan to create a DIY write up on this topic. (Obviously, the programing will be done by the dealership) Again, thank you for compiling this information. I believe it will make the process of documenting this retrofit easier.
Sincerely,
Blue
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