I've heard that a lot but haven't experienced it. When i changed mine I updated the VIN and mileage with days.

preferably with a lower mileage than yours

You need to get one from the same year with the same lights (LED, HiD etc). It also stores a backup of the mileage and I've heard the instrument cluster will take the higher mileage after a while unless you reprogram it fairly soon.

This looks like the corner of the LCM. I will take a picture of my spare one from that angle when my meeting finishes at 11:30 my time

And yes the LCM controls the lights and as they don't like water this is more than likely your issue.

First thing you need to do is fix the leak. Second is look for the part number on that module then google it to see what it is. But it does look like the LCM.

Mine had only done 150k when it let go. I was lucky as the damage was minimal but still a 2 day repair job on the drive.

Looks right to me

Is it this one https://www.jgs4x4.co.uk/defender-td5-engine-cover-rubber-grommet-isolator/

Good point, there should be 2 of them. Ah only the one

Do they come back if you clear them?

Make it think you need to take it off.

Pretty sure my Foxwell can but I'm a bit too far away.

is there a part number on it?