W211 boot lock malfunction?

[Edmund]

Hi,
My 2003 W211 E320 's boot lock stopped working recently. It doesnt respond to the rear handle, the front release switch or the remote, so I have to use the key to manually open the boot every time. I then replaced the release mechanism and checked the fuses without any luck. All components in the boot have power. Is there some valet feature that got switched on or is the problem somewhere else? Maybe a fuse blew somewhere I missed?

Thanks