W213 Mercedes e class estate 2019 rear seat release issue

[1234hl83]

Good evening

I’m wondering if someone can help me?

I have a w213 Mercedes e class estate 2019. The rear seat (one behind drivers seat) release button (located in the boot) has stopped working and is not releasing the seat to fold down flat. When pushed, there is no noise coming from the button at all.

I’ve spent the last hour looking into the fuses in the boot space fuse box, taking various ones out to test but I’m not any further in working out what’s wrong with it.

Please can someone advice what could be the issue and what I can do to rectify it?

Thanks in advance

Harry