I searched for this and could not find anything so lets toss this possible hand grenade out there. Battery Replacement / Upgrade - Battery Calibration / Battery Re-Learn Has anyone been faced with this or know if this effects the Ford Explorer. I assume we need a Ford tech (hopefully one here) to look this up in the service manual. In flipping through the latest tool catalogs I have found that Fords (unsure specific models) might now be moving to battery re-learn when replacing or upgrading to a better battery. This requires a tool like one of these: http://www.strategictq.com/products/info/7/abatserv12 https://www.otctools.com/node/4439 While the sheet OTC has only goes to 2013 for vehicle years I assume its worse now rather than better. Does anyone know if this affects the Explorers? For many vehicles this has been the case from early 2002 - sadly first I have really even heard of it or seen a tool for it, but I am not wrenching on multiple models every day. I do not I ditched the Ford battery months ago and we are constantly upgrading customer to AGM style batteries for longer life and better CCA etc. I know many with My Ford Touch where they get the false reading on the display stating - Vehicle is shutting down to save battery. I would be curious if this is not somehow related and if those that get that message have replaced a battery (not at the dealer). I also know that specific issue can be based on any aux draw (like a phone charger) that is plugged in.