[DISCLAIMER - I take no liability for any modifications you make to your own car, and this information is provided without warranty.]
Add 2x 40mm fans (e.g. Noctua NF-A4x10 5V (3 pin, without PWM control) to your Ioniq 5 to mitigate overheating.
Full build details here:
https://www.reddit.com/r/Ioniq5/comments/1kocneb/a_solution_to_the_overheating_ioniq_5_wireless/
The author marked this model as their own original creation.