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I pressed the button on the junction box, but bluetooth won’t connect!

The Junction A (SM-EW90 / EW-RS910) manual mention that you can press-and-hold the button on the junction box to enable bluetooth connection mode… and it is not wrong.

It just isn’t completely right either.

What the manual fails to clearly mention is that you also need a Wireless Unit or D-fly, or a System Information Display. Without either of those you will not be able to connect to the bike using your mobile phone or tablet, no matter how hard you try.

Read our Wireless Unit / System Information Display – why get one article to find out more.