Levo SL Gen 1 Levo/Levo SL (gen1) TCU Dead/Unresponsive Solution Warning Tip

[gary smith]

Taken into lbs, Harrogate Specialized and they suggest a TCU required. Awaiting part but delays atm. Will come back once a solution found. Lost 4 weeks now so using old HT ... But I do miss the assistance...
Soln .
2 weeks later and new TCU but £150 as no longer under warranty..

 

[G-Sport]

8 months later, same issue reoccurred.
Went down to James's again and they had another TCU to switch in.
Can't get this one to appear on the app so can't pair and adjust anything.
Anyone come across this before?

Well the third TCU lasted longer than the first two but got the same problem AGAIN (bike wont turn on without disconnecting and reconnecting green plug). And now out of warranty! (by about 4 months). Does the Mastermind TCU suffer in the same way?
Wishing I had bought a new kids SL when they were super cheap so I could swap out everything but I seem to have missed that boat..

 

[G-Sport]

Put a new battery in but I don't think that was the issue, old battery still measuring at 2.9v.
Cleaned pins of green connector with isopropyl alcohol last night and re-connected. Still turned on Ok this morning (12hours later) so maybe this is/was the issue, they did look a little dirty.
I have now put some dielectric grease around the outer seal of the connector (not on the pins themselves) and fed the cables down the TT (rather than the DT) which seems like it will leave the connectors nice and straight and unstressed. Shop had just jammed everything down the DT which on a Medium frame is quite tight to install the TCU.

I have also replaced the stock TCU bolt which used a T10 Torx with the bolt from a Magura brake pad which uses a T25 so if I have a problem out on the trail I can open it up using the Steerer tool.

 

[G-Sport]

Well another 8hours later and it wouldn't turn on, but I think this connector is definitely the issue, just "wiggled" it and pushed it a little tighter together and it would then turn on OK.
Considering replacing this connector with something better, but the obvious worry is that it is then no longer an easy job to switch a new one in if it does become necessary (though I guess I would only need to replace the lower cable). Does anyone know how many of the pins are actually used? This photo:-

Suggests it is 5.