Not today but Sunday. When we first got the red 4.0SE it came with just a single dumb key, no remote. Not liking the idea of only having one key, I tried to get a spare cut but it appears that Timsons, who cut me one for my car, no longer do them as they have wasted so many blanks when the ones they cut didn't work. Went to a lock specialist who checked and found that the blank keys are NLA but they had 4 blanks for the flip key on the shelf so they cut me a couple. All I needed then was a remote. Fortunately at some time in the past, someone has been inside the BeCM and it was unlocked which meant I could change the key code in the BeCM to match a remote from a different car. Marty was able to supply me with a remote without a key blade and one of his fob filters as it had a blue spot, Gen 2, receiver in it where the blue antenna wire had been snipped off.

Marty also gave me the fob code from the key so I was able to use the Nanocom to change it in the BeCM and, once synced, the remote with the newly cut key blade has been working perfectly. Then the dash started coming up with a Key Battery Low warning so decided it was time to do something about it. On an unlocked BeCM, the Nanocom can display the EKA so checked that worked. Opened the drivers window, closed the door and locked the car with the remote, waited a couple of minutes then unlocked the drivers door with the sill locking button and, as expected, only the drivers door unlocked.and when I tried to start the car, found it was immobilised. Entered the EKA with the Nanocom, all doors unlocked and the immobiliser was turned off. Great, all working as it should so time to do the rest.

Soldered the cut antenna wire back together and fitted the fob filter, then took the fob into the house to change the batteries. Got the back off, old batteries out, new ones in and checked that the LED flashed when I pressed the buttons so took it back outside. As the owners handbook says that if the batteries are removed for more than 1 minute, then the fob will need to be resynced and I'd had then out for at least 10 minutes, expected to have to do this. But no, pressed the unlock button on the fob and the doors unlocked, pressed lock and they locked, so all working as it should without having to sync the fob.

No more key battery low warning on the dash and with the antenna now connected, the car can be locked and unlocked from within the house, no longer from within a few feet.

As a follow up to the FUSE 10 FAILED problem I took the seat out & was able to do a bit of keyhole surgery at the back & lift the leather skin enough to be able to disconnect C0974 which is the power supply to the inflatable lumbar support. I put it all back together. I bought a cheap set of Torx bits from Amazon specifically for the T45 bolts that secure the seat & seat belt. As I was tightening the final bolt the T45 bit disintegrated so I returned the set for a refund. I knew that I should have bought a decent T45 bit & not a cheap set of Torx bits so lessons learned.
Disconnecting C0974 seems to have fixed the problem but who knows whether it was that or something else that was actually causing the problem. The answer I suppose is to reconnect C0974 & see whether the fuse blows.
It passed the MOT after it had new front brake pads fitted. The worn rear brake pads were an advisory so I am pre-empting problems by getting them replaced this week.