“Error message E9, "brake failure" manufacturer says this is unrepairable. Is that true?”
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Most likely it’s your electronic brake switch. This is a very easy part to replace. You have to remove the handle my twisting it off. Switch has one screw in the body that you can loosen, this will be required to pull it off later. There is one screw that is holding the plastic rack for the screen that resides between both handle. Remove that screw and remove the screen plastic cover off. I can now remove the electronic brake switch. Carefully remove the wire shielding electronica brake switch wire it and the circuitboard wires. Simply simply disconnect the wire coupling. Get part, perform the install using reverse steps. In ours that little plastic piece in the pic broke off, it is a switch position sensor...without it E9 code will show up.
Sorry, there was a problem. Please try again later.i have d8 pro and its saying e9 e5 how can i fix this problem
Sorry, there was a problem. Please try again later.I have noticed that the issue is not repairable. But, the scooter still works even though it says E9 and beeps. If you un-solder the speaker, the scooter works, but you won't show the speed. this is the only option other than replacing the brake, which is fairly easy.
Sorry, there was a problem. Please try again later.It’s not connecting the switch to the brake. Put something in it to allow it to connect.
Sorry, there was a problem. Please try again later.Hí! I have same issue. The brake wire voltage must be 2-2,5V. (the middle wire) Temporary I soldered two 1k Ohm resistor instead of brake hall sensor.
Sorry, there was a problem. Please try again later.This is not a repairable issue.
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