2021 Levo Turbo turning itself off

[Beagleboy]

If I short press the TCU power button the lights come on as usual, but immediately turn off again. If I long press the button (till the power bars reach the top), the power stays on, the bike is active, but I can't change the assist mode via the TCU or the remote.
I've cleaned the charge port and I'm pretty sure the remote is okay, and just recently changed the TCU battery. I've tried a hard reset by holding the remote 'S' button and power and tried with the TCU 'S' button and power but can't replicate what I've seen on the YouTube videos. The bike shuts down after the button press and doesn't restart.
I've popped the main battery out cleaned and refitted it, then put the bike on charge again just in case that sorted it out, but no joy.
Any ideas?

 

[DuncanDoughnuts]

If I short press the TCU power button the lights come on as usual, but immediately turn off again. If I long press the button (till the power bars reach the top), the power stays on, the bike is active, but I can't change the assist mode via the TCU or the remote.
I've cleaned the charge port and I'm pretty sure the remote is okay, and just recently changed the TCU battery. I've tried a hard reset by holding the remote 'S' button and power and tried with the TCU 'S' button and power but can't replicate what I've seen on the YouTube videos. The bike shuts down after the button press and doesn't restart.
I've popped the main battery out cleaned and refitted it, then put the bike on charge again just in case that sorted it out, but no joy.
Any ideas?

check the Rosenburg plug cable that connects from the battery to the motor... check the motor side... Mine had scorched marks and would do the same until it would not switch on anymore..... new cable and all sorted.

 

[Mikerb]

check the Rosenburg plug cable that connects from the battery to the motor... check the motor side... Mine had scorched marks and would do the same until it would not switch on anymore..... new cable and all sorted.

I agree. When you press the TCU button you complete a circuit which switches the battery on. Clearly there is an issue with that circuit......probably a high resistance disconnection.......holding the button longer enable current to bridge that high resistance. Changing modes is via a signal wire. Clearly that circuit is dead. So where those circuits occur are at the rosengerger connection and the motor to battery cable. That cable has caused problems largely due to the very acute angle needed to connect it at the motor end which can lead to poor or even broken connections of the wires into the motor connection plug........and/ or water ingress there.