Hello everyone. I have a 2013 Range Rover sdv8 autobiography. It’s been regularly serviced and is in excellent condition. I went to use the car recently and it said “smart key not found.” I went and got the spare key and the same thing happened. The brake pedal has also gone solid with no give. The fobs unlock the car and the auto side steps work etc. If I push the volume button the radio and electrics work but the start stop button will not actually turn the car on. This happens for both keys. Does anyone have any advise on how to fix this issue or what it could be? Many thanks guys!