Bosch Smart System Experts (Help Please)

LAWHITEY

Member
Apr 29, 2020
70
34
UK
Sorry people, done numerous searches and can't find the answer, so will try to make a long story short.

I have a 2023 Trek Rail 9.7 which came with the bar mounted LED remote as the only control on the bike. As it's the carbon version it also came with a precut hole in the top tube with blank plate for the install of the smart system controller (if that took your fancy) well it did as I wanted a cleaner cockpit and might aswell make use of that cutout.
So last week I took it to my local shop who had sourced me the smart controller and bluetooth mini remote to install after being let down by another well known bike shop that i had ordered from online. I thought it was simple procedure as i watched a video to do it myself but once finished it said it needs plugging in by the Bosch dealer to sync up (or something like that).
So picked my bike up after leaving it for an hour all was well and the controls were working and he said it had also two updates while plugged in. When i got home i had a quick check of the flow app which is where the issue starts.
It says my bike is disconnected and wont link up anymore. After a bit of reading i tried the trouble shooting options (turn of/on bluetooth/phone etc) and i was going to remove my bike and reinstall the app. After speaking to the guy where i took the bike he told me not to do this (don't know why, will i loose all the data off my bike?)
My post is due to being fed of waiting now as i've been left in the lurch as he said he was going to speak to Bosch and get back to me earler in the week (which he hasn't, even after messaging him) and i don't want to chase him when he should have made sure everything was correct before i left the shop, so i'm wanting to try sort it myself before taking it somewhere else.
Is it as easy as removing my bike from the app (which i've read) and deleting the app and reinstalling and adding my bike again, will this sort things or will i loose my bike data? Or do i need to take it to a dealer for them to do there bits again when it's plugged in?
Any assitance / advice would be a massive help, cheers.
 
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LAWHITEY

Member
Apr 29, 2020
70
34
UK
I think i’d delete the bluetooth connection on your phone, kill the app then redo the bluetooth connection and see if you can get a bluetooth connection.
Cheers, i think i did try this though, i was messing about with for an hour so forget all the steps i took and it was a week ago.
 

Mikerb

E*POWAH Elite World Champion
May 16, 2019
6,844
5,289
Weymouth
you changed the bike's controller so in order to connect Flow to your bike you need to start from scratch with the pairing process. To do that the existing blutooth pairing in your phone needs to be deleted.
 

DieBoy

Active member
Jul 14, 2023
148
219
EU
You have a new controller, so as far as the Flow App is concerned it's a different bike.

Re-pair the Bluetooth connection as Mikerb recommends above.

Longer explanation:

The Flow app connects to the bike's controller over Bluetooth.

Every Bluetooth device has a unique identifier (MAC). This is what allows a host such as your smartphone to recognise known devices and differentiate from new ones.

Example: If you buy new Bluetooth headphones you need to initially pair them to your phone, even if they're the same make and model as headphones you've previously owned.

You've changed the controller in your bike. The new controller has a different Bluetooth id to the old one.

The Flow app is attempting to connect to the old controller which is no longer there. This is why you need to redo the Bluetooth pairing process so the App will then connect to the new controller.
 
Last edited:

LAWHITEY

Member
Apr 29, 2020
70
34
UK
Just a big thank you to you guys for responding, all sorted now, although after failed attempts deleting the Bluetooth pairing and trying to repair, it eventually work by deleting the app and reinstalling.
 

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