When I start my Ioniq 5N, despite the fact the the rear seats are completely unoccupied, the rear seat belt reminder light comes on... but only for the centre seat. It goes off after a while... but it suggests that someone is sitting there without their seatbelt on. There are no audible warnings... just the three seatbelt reminder icons but with just the centre one lit up in red. It doesn't come up if the seatbelt is done up (with or without someone on that centre seat. Is there a centre seat weight / occupancy sensor that's at fault? Is there a centre seat sensor at all or is this just a generic general reminder?