Anyone have any issues with the radio unit failing? The computer in the unit constantly reboots. Suffice to say, no audio, no way to control the charging capacity, and it makes it difficult to change the climate controls. Started in April when the car was 5 months old. Dealer said the radio unit was bad and ordered a replacement, which they said was backordered 3 weeks. It's been over a month now, and they're saying it's backordered until mid September. So that will make 6 months without a lot of functionality of the car. I can't see a 6 month backorder unless this is a common problem to all Niros, or unless the radio is specific to the Niro EV. Just wondering if anyone else has had trouble.