[AFinnish530e]

I have a weird rattle (ticking type) from the passenger seat area. It is only audible when no one is sitting on the passenger seat, and it is much louder when the interior is cold. It is not the common problem when the seat belt buckle is rattling against the pillar. That is ruled out. I have inspected the seat from underneath and the surroundings but cannot find anything loose. Anyone with a similar rattle or a known fix?

Thanks.