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Reset KAM with tuner vs pull fuse vs disconnect battery

2K views 0 replies 1 participant last post by  sam369 
#1 ·
Many Mustang owners reset lousy adaptive transmission every a few weeks. I wonder if it also helps for Fusions. If it is worth doing, what is the best way to do it? Of the three methods I mentioned in the title, do all of them require relearn (idle several minutes, turn on AC for one minute, then drive 10 miles)? I tried to use SCT X4 to reset KAM, but it throws CEL with DTC p1639. Maybe bricking the car is also a concern. Disconnecting battery definitely requires relearn, and it also resets radio and may cause other problems. Pulling a fuse seems to be the best way to me. Maybe it just resets adaptive transmission but not other parts of PCM? What is the counterpart in Fusion of fuse 47 of Mustang?
 
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