Dreaded Error 21

[inoxa]

Glad to hear you have a fix. I am in Error 21 hell now with my wife's white Rad City 5 Plus step thru. I paid $60 for a new wiring harness that we connected but no luck. I contacted Rad support and now they sent me an email with an invoice for a new battery mount and controller @ $200 but when I went to order it was out of stock and when I complained they said it is a supply chain issue and they hope to have the part in January 2024! Almost laughable if not so disappointing.

I am not sure what to do next. The bike is a 2021 so out of warranty but it only had a 100 miles on it.

Sorry for your problem.  Since it is out of stock and warranty, Order an upgraded one from Area13.  They had them in stock last week for your model.  It is worth the upgrade.  You will get more torque/power on your bike.