Most expensive repair on ebikes and how to avoid it

Avoiding a problem in the first place is always better than fixing it after. This will save you time and money in the long run. 
We like to help our customers avoid some of the most common mistakes so their bikes can last longer and save them money in the long run. So, every component on the bikes can be replaced or changed without a problem. Some problems are simple to avoid but cost a lot to repair or replace. One of the biggest one is the connection between motor and the controller. When this connection is bad, it causes signal issues resulting error display on the screen and you are unable to use the bike as usual. 
 
When this connection gets bad, the only solution is to replace the motor and the controller altogether because the connection fuses together and you're unable to fix it or pull it apart so the whole system needs replacing which is the most expensive thing to repair on these electric bikes best thing you can do is check dot the seal was there usually rubber ring under the connection is clean and is pushed in all the way and tightened with the lock or the twisty ring this will ensure a great connection and avoid dirt grime water or contaminants getting in causing the issues so every time you get something fixed on your bike something like the rear wheel or a puncture or anything it is up to you to check that this connection is there and it is tight and secure because if you go back the bike shop will just say it wasn't their fault and they will refuse to help so to avoid issues or unnecessary expenses just check this connection at all times.
Here is a video that helps understand this better.