Hold the button often more than 5sec, the light will blink red and then will start to shift through gears, so be ready to rotate the cranks. If that doesn’t work then.....
Disconnect the rear derailleur and shift your front a couple times, reconnect rear d/r, if that doesn’t work disconnect the shifters, derailleurs then hit the button on the A Junction, connect the rear d/r last. Last suggestion is if you have Di2 on another bike connect the crashed system to the good one and see if it shifts.
Some strange things work/fix Di2 issues.
Did you by chance connect the system via Bluetooth and E-Tube to troubleshoot? If so and you didn’t disconnect via selecting disconnect then the system will act bricked. Try to connect to Bluetooth and the E-Tube app then select disconnect from the menu in the upper right.

Thanks Mike! I will try that and will back here with the results. Just to advance, I tried holding the button for 5 and more seconds but didn't work.

Thanks, I'll be back.

What happens when you hold the button for 5 seconds?

Does no light come on at all?

What happens when you hold any shift button for 0.5 seconds? Does the junction display the battery status?

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BetterShifting.com - Di2 help and guides| BetterShifting Instagram | Terry's Instagram

It creates a combination of lights (red - green) unknown for me and the mechanic who checked the bike. Right now the bike is in the store, they are waiting for an email from Shimano to explain them what are those lights. I am going to get the bike today and take it home to try it myself because the mechanic in the store said this is the first time he has seen something like this, a complete mistery.

I will tape a video and upload here. Thanks

Not like this.... right?

https://www.youtube.com/watch?v=reZ7Cj39bss
https://www.youtube.com/watch?v=dHg-Kaj0kJc


Not saying you have a bad mechanic per se, but I would try to find one that has a bit more Di2 experience and is willing to phone Shimano.
Things like this are not solved by sending emails back and forth in my experience and Shimano actually have a phone number bike shops can use for support ;-).


I'll be patient and wait for your videos ;-)

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BetterShifting.com - Di2 help and guides| BetterShifting Instagram | Terry's Instagram

I don't know actually, I never got to see the lights. I am getting the bike and trying myself. Thanks Di2Terry, if you know a specialist I can hire in the distance let me know. Best

(I will upload the video soon I hope today, when I get the bike) Thanks again

I got the bike now. The mechanic couldn't solve anything.

I have uploaded the video: when I press for 5 secs the lights start blinking (like the video you showed me about the bluetooth connection) and nothing happens.



In my e-tube app, the right sift seems unsetable: (in Spanish, "cannot be adjusted"):

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UPDATE on the mistery:

After touching the configuration in the e-tube app the light is blinking green when pressing for a few secs.




The connection between the right shift and the JC41 seems to be fine as it can change the front part. This remains a mistery.

Here are a couple of random thoughts, they may or may not apply to your situation, but I'll list everything I can think of right now:

* If you connect to the mobile app and then just close the app without using the "disconnect" button, the bike won't work.

* If you have used E-Tube Project 4 for Windows using the SM-BCR2 Charger then that will leave the bike in a not-working and battery-draining state (more here)

* Personally I find the SM-EW90 / below-the-stem junction button really hard to press and keep pressed. The display button or even the bar-end junction button are a lot easier to press. I need to press the button reaaaaaaaaaaaaaaaaaally hard.

I would try this, in no particular order:

* Disconnect the battery for 30 seconds and then reconnect it. (according to Shimano this is the closest you can get to a 'soft reset'):
* Connect the bike to E-Tube Project 3.4.5 for Windows (download link on the e-tube site, next to the 4.0.2 download button) and see what components it recognises. Double check every component is there

When you try to apply settings to the shifter, what values are you trying to set? On some bikes E-Tube attempts to use "Cyclecomputer Left/Right", which isn't a valid option (unless you have a Shimano "cycle computer" or E-Tube ride device paired). In order to change page on garmin/wahoo/etc you need to set it to channel 1/2.

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BetterShifting.com - Di2 help and guides| BetterShifting Instagram | Terry's Instagram

Thanks!

I disconnected the battery for 30 secs (a bit more) and connected again. RESULT: Nothing new, it keeps not working.

I don't have Windows, but I will try to run some kind of emulator if I can. The mechanic I took the bike to said he connected the bike to the computer (windows I guess) and everything was "fine and well-connected".

When connecting it to the Etube, it says I cannot set the shifting, but doesn't says why.

I will keep trying things.

Thanks again, this mystery is hunting me actually, so frustrating. I will upload another video later.

UPDATE:

I have tried everything possible and it doesn't work, at all. The back rear doesn't move. However, I discovered an annoying and continuous "clicking sound" somewhere along the system. In this video you can hear it (volume up) a constant "click, click, click, click"





Does it ring any bells?

It seems like you might have a mechanically (as opposed to electronically) broken derailleur. "Clicking" sounds like the servo failing to engage properly to move the derailleur.

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Tech writer/support on this here site. FIST school instructor and certified bike fitter. Formerly at Diamondback Bikes, LeMond Fitness, FSA, TiCycles, etc.
Coaching and bike fit - http://source-e.net/ Cyclocross blog - https://crosssports.net/ BJJ instruction - https://ballardbjj.com/

Thanks Fredly, do you think that changing the derailleur will fix the problem? I will take it to a mechanic of course, but do you think it can be it?

If the derailleur is mechanically broken, yes; will absolutely fix it. It's easy to tell, just plug another derailleur in and see if it works. Based on what you've said on this thread, it's definitely what I would try at this point if I was working on the bike.

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Tech writer/support on this here site. FIST school instructor and certified bike fitter. Formerly at Diamondback Bikes, LeMond Fitness, FSA, TiCycles, etc.
Coaching and bike fit - http://source-e.net/ Cyclocross blog - https://crosssports.net/ BJJ instruction - https://ballardbjj.com/

Thanks, I will let you know. Best

New (weird) Update:

A new "beeping" sound started when, while the battery was charging (I don't know if this is related), I pressed the right swift (the one that doesn't work). A new video of the Shimano Ultegra Di2 mystery, btw on 00:13 I receive an email and it sounds, just ignore that:

The beeping sound: https://www.youtube.com/watch?v=aMUBCckjXVM

After that it is not working either.

Interesting!
At first I only heard that email sound, but yeah.. that beeping isn't normal :).

Like Fredly says, the clicking means that the derailleur is trying to move, but cannot. That can be either a mechanical failure or being blocked in some other way (chain extremely short or the limits being set wrong at either end of the cassette/RD).

In your case I agree it looks like the RD is broken.
A bike shop should be able to confirm this by hooking it up to their SM-PCE1 / SM-PCE02 and running error checking/diagnostics on it. If I recall correctly this involves E-Tube telling the RD to shift and then checking whether or not that actually happened.

Note that in some cases a broken RD will still shift if there is no chain installed or when you 'help' it by pushing it in the direction it's trying to shift. That doesn't mean they're suddenly fixed though, it should definitely shift without getting a push and should work with a chain installed. Otherwise what is the point :).

I just tried to get my older/indoor RD-6870 to go into crash mode by hitting it with hard objects, but it wouldn't :(

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BetterShifting.com - Di2 help and guides| BetterShifting Instagram | Terry's Instagram

Thanks again both, you guys are helping a lot.

I will check with a mechanic, I am afraid to get stuck again, the previous one did nothing.

I will get back in a few days hopefully with good news.

UPDATE about the clicking sound:

I don't know if this helps, but when I unplug the cable (the circled one) the clicking sound stops.

That is what connects the rear derailleur to the rest of the Di2 system, so yeah.. without that wire it doesn't get any power (or shift signals/commands) ;-)

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BetterShifting.com - Di2 help and guides| BetterShifting Instagram | Terry's Instagram

:) Thanks Terry, that's my level hehe. Anyway, what my point was is that the "clicking sound" does come from the back rear, you were right. Thanks also for these speedy lessons about bikes, I am surely learning a lot in the middle of this crisis :) Thanks!

Is it plugged in charging in this video? If so I was never able to shift gear while it was charging.

Hi, it was plugged and unplugged. We tried everything, but thanks.

We see that the problem is in the back derailleur as you all pointed. I have bought a new one (it is so difficult to get one these day, I might just bought an empty box). In the meantime, I have been taking a closer look at the derailleur, after the hit with the ground I tried to find something out of place near the engine that could explain the "clicking sound". I say some parts that might be out of place, I pointed them in red. Not sure if that's the case, but it seemed strange.



When my new derailleur comes I will see if all this has a happy ending or not. Thank you all again.

And FIXED!!!

I bought a new rear derailleur and it works just fine. I changed (not easily) and it works now.


So, bottom line: if your DI2 Ultegra Electronic Swift is locked you have several options:


1- It is in crash mode and it won't go up until you press the junction button for 5 seconds
2- Something is broken in the derailleur, so you either change it or take it to the store.


Thanks everyone, your help was amazing.