Hello,
I can confirm rattling or squeaking sounds come from back seats from Tucson EU model with heated leather seats.
In normal, upright, position rattling is more often but it can occur in different seat positions, folded or leaned back.
If the car is fully occupied, no rattling/squeaking.
If you drive the car to the dealership, no rattling, of course...
Advice from KIA forum doesn't work - it is not easy to remove seats and the link isn't working anymore.
So, the question is:
How lower part of the seat (seat itself) can be removed and inserted back, or tightened?
Can the trim from the back side of the upper part of the seat be removed in order to put some material around inner metal parts, springs etc?