I know this is an old thread now, but we have a new 2022 Sector E1 with these same problems. Our dealer is helping with a case with Hisun, but wanted to post here to let folks know that it might still occur. We live in a hilly community in NC, and the big hills slow it down and throw the 45C3 and then 4603 errors, and the unit overheats and stops. After cooling a bit, we can go a few hundred yards or so before it overheats again, and we repeat a few times to get home. Frustrating for sure. Hopefully our dealer and Hisun will come through and get things going better.
