Ford Super Duty Owner's Manual

MFL wrote:
Disconnecting the battery requires more computer learning, and supposedly engine will not start, if battery is not at state of charge to operate all electronics.

I will be changing out my battery soon, due to it being a bit weak. The manual says part of learning process, after running engine at idle to complete warmup, you need to put in gear, idle one minute, then turn air conditioner on, allow another one minute of idle, then drive around for another 10 miles.

I understand the idle learning, while AC is turned on, but it is currently 11 degrees below 0 F, and I would wonder if the AC would even function normally, to relearn idle properly?

Would the lowest tech at the Ford dealership, installing the new battery know to jump through all these hoops listed in the manual, or would he just swap batteries and GTG?

I'm thinking like many things, might be best to change it myself, then it would be done as described in the manual.

Jerry

Back in the 90s we had a 9 volt battery attached to a cigarette lighter plug-in to keep some voltage in the system while swapping out batteries. It was mainly for radio presets. I have no idea if it would work on a newer vehicle but something you could look into.