I am not sure this is any help but I had a similar problem.
I removed the main fuse to the power and disconnect battery backup. I then pulled the cable to the back of the keypad panel. Then fired it all back up and it worked a treat.
It was some time ago so its possible I missed a step. I caused the issue by removing the wrong fuse thinking it had blown.
I removed the main fuse to the power and disconnect battery backup. I then pulled the cable to the back of the keypad panel. Then fired it all back up and it worked a treat.
It was some time ago so its possible I missed a step. I caused the issue by removing the wrong fuse thinking it had blown.