My wife and I bought a 2023 Ioniq 5 SEL RWD a couple of weeks ago and are experiencing a frustrating and repeatable issue: When you drive the car for more than about 55 miles at 75+ MPH, you experience a "Power limited" error message and the accelerator eventually becomes non-responsive.
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This is obviously a very bad thing to happen on an interstate, when you coast to a stop on the side of the road and are being passed by trucks at 80 MPH. If you turn the car off, wait about 5 minutes, and then turn it back on, you can usually continue your journey, but if you go above 70 MPH, you will experience the issue again. Interestingly, when driving at 68 or 65 MPH, I've not gotten the problem to happen.
Other than this (rather big) issue, the car is otherwise perfect and exceeds expectations. We took the car to the dealership to investigate the issue after it happened (we were 100 miles from home and just drove slow to get back home), and they were not able to find anything wrong with it, either with their diagnostic equipment or during a test drive (but they only drove a few miles at a slower speed than what is required to make the problem happen).
At first, I thought this might be an issue with Eco mode, which I was in when this first happened. However, I've gotten the issue to happen again in a very repeatable way, this time in Regular mode.
To see this in action, please see this video: New video by Stacy Pennington
Has anyone else experienced this?
What steps should I go through to get the dealer and/or Hyundai to address this issue?
Thanks in advance for any advice you have.