Hi I seen your video if i replace my ecm an key doni aslo need to reprogram the cluster my mustang is an 08 does everything you say in other videos. I was offer to get my pcm fixex an key reprogram BUT DOES HE ALSO NEED TO REPROGRAM MY CLUSTER IM CONFUSE
I'd reprogram key for cluster if avaliable and cost effective. That may allow it to run correct. Best to have ford dealer look at it after the fact. I've ran into this problem with 3 different clusters, and only ORIGINAL cluster worked to run vehicle.
