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I’ll have to guess what model Sondors you have, always important to include all particular info about your bike because they can be quite different. It’s also important to include when, how and under what circumstance the problem ocurred.

If you have a 2018 bike, this is the KD51C Display Manual.

error code 25 indicates a brake malfunction. Make sure the brake cable from the controller to the brake levers are correctly connected. (Never Twist a Higo Connector) and make sure your Brake levers are completely open (un-applied) so the switch in the lever is open. 

Take 2 Aspirin with a Kale Smoothie and let us know the result.




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