Have a 2008 Range Rover HSE... 135k miles

I get a message in the dash every time I turn the car off saying "Key in ignition lock". The remote buttons do not work anymore to lock/unlock the car. I have to use the key to lock/unlock. Car starts up and runs just fine.

Does anyone know how to resolve this? Hoping that its probably tied to the issue of the remote not working. I thought replacing the rechargeable battery might do it but was not sure. Did a lot of google searches and all of them come up with not being able to turn on the ignition. Not my issue. The car turns on and runs normally.

Any input would be appreciated!!! Thanks in advance.