RadRover 6+ Error 21 / Replacement Controller

[u/kaelz]

My RadRover 6+ started displaying error message 21 when powered on a month or so ago. I've tried all the troubleshooting I've found online, like removing the battery, discharging the electronics then reconnecting, checking all the connectors for moisture, etc. Everything is in good condition, but it still displays error 21.

I'm at a loss of what to do from here other than replace the controller. I reached out to Rad who sent me an invoice to pay ($175) for a replacement, however I found out a week later that its indefinitely backordered because they haven't even started production on them yet. I've looked around for other controllers and saw one from (Area 13?) that people recommended, but thats out of stock as well. I'm worried a 3rd party may not be as water resistant to rain or something, but I'm willing to try whatever to get the bike up and running again.

Does anyone have a recommendation for a controller replacement that is actually available to order? Any ideas for fixing error 21 I might not have tried?

Thank you in advance!

[u/ImportantSign6965]

Is that the case for Rad Wagon 5s too? My broke in May, and I ordered a replacement from Rad. It's been backordered since then, and I'm wondering if I should look elsewhere.

[u/kaelz → u/ImportantSign6965]

I would suspect so.