What kind of "gremlins" are we talking about?

 

Thank you for your concise and informative explanation of the inner workings of the ‘brains’ of our Defenders. I’m not at your level of expertise, but understand the intricacies and complexities that make all of these systems function seamlessly. Your advice to just leave well enough alone is good enough for me.

 

EDIT as I just re-read your post. I don’t think you can remove telematics and “go back” -- this thing was designed to be connected.

But -- Thinking this through.. just for the intellectual exercise more than anything, if you want to disconnect it from all connected services (which is basically what you are asking about, is it not?), here is what I think you would do. And then, you would be there, essentially, if you could disable the warning lamps (see my last comment):

1) First step. Go for the jugular. You would have to unplug the SOTA antennas. Looks like 2 of them. Here it is. #2 & #7 -- it looks like they’re up above hte headliner in the rear D pillar area on each side, based on the below diagram in the JLR L663 service manual.




2) That above should in theory neuter the cellular connection to the JLR mothership, right? (which is via one eSIM). But then there is another eSIM for the in car mobile hotspot. Which technically is “connected” even though the L663 doesn’t do anything with this. I think the way you would disable that is by going into the PIVI and turning WIFI off and then also going into a GAPIIDTool or similar and turning off the Wifi option -- then the car would just think it wasn’t optioned with wifi, so then the car wouldn’t have that function turned on to connect to your consumer-grade mobile hotspot.

3) Roof Pod - This would kill GPS (they call it GSM) and your ability to connect to wifi. I wouldn’t have thought this had anything to do with wifi, but see this page. At the very bottom it says “External Wifi ...”



4) ) I think you then sign out of Incontrol completely, and delete your in control account with JLR. Let your subscriptions to whatever the heck they provide (connected navigation pro, connected services, etc expire -- which happens in a few years from new)

5)Then there are all the APPS in Pivi that use it. Remove them, disable them. Found this online. To turn off Live Apps in your Land Rover or Jaguar vehicle with PIVI Pro, navigate to "Settings" > "All" > "Apps" > "Live Apps" and then select "Delete Live Apps”

6) There is also the emergency battery backup system for SOS. I guess the calls are initiated via the SIM above. I am really not sure what the SOS function even does in this vehicle (it is not like we have “on star” but -- I would just pull that module out of the car too and see what happens. Behind the trim panel behind the drivers rear door. People post up here about the battery in it dying, it’s like a smoke detector battery. Annoying, and it dies and gives a warning.

7) Oh another good one. Remove the mobile phone signal booster antenna behind the left rear taillamp just for fun too.

Then it cannot connect to anything outside the car. How could it? What great fun. I wonder the litany of error messages you would get.

Here is where it gets interesting. I have been hacking coding my Porsche 991 (911) recently and there is the ability in the instrument cluster module to turn on and off warning lamp functions. So, for example, if I did not want to get a warning in the cluster about “door ajar” I can go into the German codings and select “nein” for whatever the function is that allows for a warning to be displayed for this. I wonder if deep inside the JLR coding functions -- which I have never seen with the GapIIDtool, if it is possible to then disable all the warning messages one would get when disconnecting the defender from the mothership.

Would love everyone to poke holes in this.