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Rear Centre Seatbelt Reminder Light - Sensor?

MisterMR44

New Member
Nthusiast
Mar 18, 2025
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London, UK
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?
 
A mí me pasa lo mínimo en mi i20N. Supongo que será normal
 
It does the same on my i20N - but I added a small ‘cheat’ clip I bought from AliExpress.
 
I'm paying more attention to it now...! Basically, when I get in and start the 5N up... all three of the rear seatbelt lights come on... but then the outer two switch off after a few seconds just leaving the centre one on. And this is with the seats unoccupied and with no seatbelts done. It initially made me think it was a fault but then the remaining centre one goes off after a while. Maybe it's just a Hyundai quirk.
 
Hi.
When I did the ADP box install, I had to remove the passenger side rear seat to get access to the factory wiring. Part of that process was unplugging a little grey plug for the center rear seat. I think that is for the occupant sensor. It is down behind the base of the center buckle.
 
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