I bought a 2011 Jaguar XF from the auction it had a dead battery came with one key so I got another key programmed tried to start it put a new battery in the car and new battery in the keys but the car won't recognize the key it'll lock and unlock the doors but the button in the center doesn't work so I use the slot and the slot says check smart key so the car is not recognizing it so my mechanic said KVM BCM problem so when I got a new BCM and he programmed it and then I got a new TV how many programmed and put it in and it's still not recognizing either of them and still saying checks smart key I can't start the car whatsoever it doesn't recognize the keys so I called another locksmith he came out and made me two more keys and he tried programming it nothing so I've made four keys now change the KVM BCM had it all programmed I still get nothing any ideas or anybody can help me possibly
I am in downtown Los Angeles I need to text that can help me ASAP they're going to tow the car any day

Start with the basics check if the battery is at 12.6 or greater. Then we can start diag

Check on this site for JLR Tech - he is on the West Coast however he was able to reprogramme my XF keys remotely when I was in Texas.

get a mongoose JLR cable from eBay. Download a version of SDD. It’s on the forums, just search. I know everyone is going to say get a battery maintainer, however I didn’t have the money to buy one when I had this issue. You will need to atleast connect to another car using jumper cables. I hate worked for me, was to go into SDD and replace Control Junction Box as new. I didn’t actually replace the part. I only ran the module. When this happened I was able to link my only key and a spare key that I bought off of eBay all at the same time

People are going to loose their mind over what I told you. Because technically you should use a battery maintainer, but like I said, I didn’t have the funds and it worked for me. 2013 jaguar XF AWD

Yes battery is at 12.6 volts exactly actually just came in from trying to mess with it and figure something out so the battery is good but I was looking at rear fuse box in the trunk and it seems like there are things missing or unplugged possibly I see some extra wires as well not plugged in I bought it at auction so maybe they had to replace all the electrical and didn't put it back right possibly and it never ran again so they let it get towed because it looks like a lot of the parts have been changed literally like everywhere I look you can tell it's been removed or replaced so that has to be my problem I am checking all of that compared to the factory stock diagrams

Yes battery is at 12.6 volts exactly actually just came in from trying to mess with it and figure something out so the battery is good but I was looking at rear fuse box in the trunk and it seems like there are things missing or unplugged possibly I see some extra wires as well not plugged in I bought it at auction so maybe they had to replace all the electrical and didn't put it back right possibly and it never ran again so they let it get towed because it looks like a lot of the parts have been changed literally like everywhere I look you can tell it's been removed or replaced so that has to be my problem I am checking all of that compared to the factory stock diagrams

Second question is the BCM/KVM brand new from JLR,
also do you have a image of your trunk

I will supposed to pick immediately ASAP

I will post a pic immediately ASAP thank you

You need somebody to run immobilisation in SDD to reprogramme the keys.

This.