Sorry to hear that. I went thru a similar situation with not only one but two bikes. Both were for the most part DOA and in both cases it was due to bad controllers. I must say Rad provided new controllers but you have to get them changed. Some serious quality issues. Once rectified everything works fine, well until today. 260 mile later I go to check my tires for air pressure and I note I have a crack in the front tire firewall. Checked my rear tire and cracks are appearing there as well. Tire inflation was always in spec, I don't exceed the weight limit and at 75 yrs old I don't do any off road biking, always on paved rail trails.

Rad sent me a new controller, Once I replaced it everything works fine.

Went through every connection I could find following RAD trouble shooting and nothing, still have the same problem. The UI remote shows one blinking battery bar (battery is fully charged) than the UI display shows error 30 and shuts down. What I don't understand is that it worked for a short while. Neither the throttle nor the power assist work. It's dead!

Yup it was the controller, they sent me a new one and the problem is solved. I ordered a bike for my wife and out of the box getting Error 30. Starting to get buyers regret.

Just went through an identical procedure with Rad service. Not as lucky as you, in my case it looks like I need a new controller. They are shipping me a new one, hopefully they aren't back ordered.

I just received my Rad City 5 plus. Put it all together per video/manual with relative ease. Went for my first spin and found my lights don't work, it was evening. Neither the headlight or the tail light would turn on. The brake lights however do work. Also noticed that both the headlight and tail light will blink momentarily when I shut the power off. All the electrical connections appear to be good and everything else appears to work fine.
I'm a bit disappointing as this is a brand new bike and quite frankly shouldn't have these problems. Has any one else experienced these issues or have fixes for this. Send an inquiry to RAD but haven't had a response yet. The last measure is to return the bike

Thanks for any help,
Hank

I just received my Rad City 5 plus. Put it all together per video/manual with relative ease. Went for my first spin and found my lights don't work, it was evening. Neither the headlight or the tail light would turn on. The brake lights however do work. Also noticed that both the headlight and tail light will blink momentarily when I shut the power off. All the electrical connections appear to be good and everything else appears to work fine.
I'm a bit disappointing as this is a brand new bike and quite frankly shouldn't have these problems. Has any one else experienced these issues or have fixes for this. Send an inquiry to RAD but haven't had a response yet. The last measure is to return the bike.

Thanks for any help,
Hank