Mine now goes into Deep Sleep almost daily. Dealer "thinks" this wiring harness "may" fix the issue, though I know it won't. My truck is charging the battery properly while driving, +14v, but the battery drops to 12.2v as soon as you turn the truck off.
It might take a certain number of drive cycles (so many minutes and/or miles whatever Ford calls a drive cycle) for the notice of a deep sleep event to automatically rotate off Ford pass!(??)! Or possibly manually reset, of course.
I actually got a new deep sleep message this morning after driving it about 5 miles. When I drove it back home, I did not get a new message. Previously I would get a message soon after I parked it just about every time I drove it, except on my longer drives. I just checked my vehicle dashboard on Ford.com and the deep sleep message is gone from there, even though it is still on the app.
It has been posted that using forscan it was discovered that the hybrid ice 12v FLA battery was showing for an unknown reason to be an AGM so presumably the bms was trying to charge using the profile for an AGM???? Might ask dealer to verify proper charge profile???? I would consider replacing battery myself as a last resort solution while placing the suspect battery on a smart 10amp charger with recovery mode to heal it's ills. I would then most likely have a good backup.
I would suggest calling them in. Also located on the letter you received is the following : If you have difficulties getting your vehicle repaired promptly and without charge, please contact your dealership's Service Manager for assistance. RETAIL OWNERS: If you have questions or concerns, please contact our Ford Customer Relationship Center at 1-866-436-7332 and one of our representatives will be happy to assist you. If you wish to contact us through the Internet, our address is ford.com/support. For the hearing impaired call 1-800-232-5952 (TDD). Representatives are available Monday through Friday: 8:00 AM – 8:00 PM (Eastern Time). Or call 1-800-392-3673 which is the Ford Customer service number. Dealerships like that should have their franchise revoked.
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I've charged my battery with a smart charger overnight more than once. It's still drops down to 12.2 to 12.3 volts soon after unplugging it.
Hybrids have fla not agm. But yours could be different, of course.
You're living my six months from Christmas Eve to July 4.
When you charge it do not hook negative to battery post hook it to body ground. Manual warns that bms is located on battery neg and nothing at all should be hooked there.
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My dealership said they couldn’t order the part until o brought the truck in. Then they needed the truck all day — just to order the part.
So, the problem with your truck appears to be corrected? I realize it has only been a short time since, but I'd love to hear any specifics about what the solution ended up being for you.
I am confident that either the CSP 22B39 (or the TSB 22-2340 that preceded it) would resolve the issue. Unfortunately, I was never able to get either of these performed, possibly and partly due to Ford's ambiguous troubleshooting process with a vague "wiggle test", which apparently didn't reproduce the problem at the moment it was tested (assuming it was). My own testing during the events typically yielded >12.6V at the underseat battery location vs. 0V to 3.5V at the underhood jump location.
