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Purchased in April 2023. Since last month getting notification on my phone about deep sleep mode daily. Vehicle highway drive daily 60-100 miles per day. Is it normal? Battery under warranty?
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Battery issue
- Thread starter Mightybeast
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Welcome to the club of deep sleep issues. There many threads discussing this issue with possible solution. I think the best solution is to replace your battery with a third party AGM battery. Ford does not even make an AGM battery for the Maverick hybrid. If you search this forum, you will find recommendations for a replacement battery and how to install it.
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Good morning! If you'd like to, go ahead and send us a private message with your VIN and dealer info and we’ll look into this deep sleep concern. Thank you!
Unfortunately you are likely in for a frustratingly protracted process that will lead to a whole bunch of lip service, testing and no satisfying resolution. However, IF your factory battery does test bad and they replace it, the deep sleep issue or battery saver mode MIGHT disappear. At least for some period of time, after which the problem will likely return. I've been playing this game for nearly three months. Good luck...
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I just had my Maverick in for 5 recalls. While I had it there I mentioned the Deep Sleep/Battery Saver mode that had just started about a month ago. I had driven the truck the week before about 50 miles, and had the Battery Saver message 2 hours after that trip. They said the Battery checked ok and all it needed was a charge. This Maverick was purchased 5/22 and it has 34,000 miles on it. It only had two "Deep Sleep" messages in the last 2 1/2 years. I really think the battery is not taking a charge as well as it used to. I was hoping they would warranty it, but I may have to do what others have done and get an AGM battery.
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I've not had this issue in over a year/18k+ miles of ownership. Maybe luck? I also pulled Telematics fuse #11 early on. And use a battery tender when not driving for a few days. I've used battery tenders on older vehicles, too. My conventional flooded lead-acid batteries have typically lasted at least 5 years or more.
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Ford Motor Company how do we send a private message to you?
I have a 22 Maverick Hybrid and in the last 3 months have been getting battery saving message. For awhile every other day, now almost daily. Had battery checked while sign on 11.6, tested fully charged 11.8 and 12.6. Battery under warranty but because it's up to 12.6 not covered. When I asked dealer if I bought an AGM battery would they reset system up to accept the new battery, they said sure bring new battery in they'll put it in, reset computer and I can be on my way.
Do it and move on. AGM is the answer. And yes, all the sites that sell AGM batteries will say it won't fit. Just find a battery that is similar in dimensions and it will fit. Web sites systems won't allow AGM to be a replacement battery, that's why it will say "not for your vehicle"
I wonder why?
I would hope you wouldn’t have this issue taking these measures.
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Or you could save yourself a trip to the dealer and spend less than a half hour and install it and reset the BMS yourself. Pretty easy to do.
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I also have a hybrid Maverick I got in 5/22. I only had one "deep sleep" message (2023 on a super cold winter day). I also have 34K miles now.
My battery was tested while in for other service, and it was weak enough that it was replaced under warranty.
It’s literally removing the negative battery cable, then the positive battery cable, swap batteries, attach positive battery cable, attach negative battery cable. You also have to attach the vent tube. Then Reset BMS.
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Make sure if DIY - follow the next step in the manual after the BMS reset.
Let it sit overnight to learn.
There is a bit more than just removing 2 cables though.
You have to remove the battery holder clamp at the bottom buried under the plastic surround - so you have to pop off that plastic unless you have a rachet with extension & probably magnet - so watch a video on that part specific.
Let it sit overnight to learn.
There is a bit more than just removing 2 cables though.
You have to remove the battery holder clamp at the bottom buried under the plastic surround - so you have to pop off that plastic unless you have a rachet with extension & probably magnet - so watch a video on that part specific.
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