HV Battery replacements - how common is this?

[Mikeetch]

I was watching some JMCGarage on Youtube at his 90k mile update and he mentioned Ford had to replace his HV battery. I searched here to see if there was anything out there about this, but seems my search kungfu is weak or there isn't a lot out there on it. Anyone know how common this issue is with the HV battery or a root cause?

He did mention the cost of the battery which was covered by warranty really wasn't outrageously expensive, but we really shouldn't be seeing HV failures. If this is a known issue can someone point me in the right direction. He of course mentions the CV axles issues, and he brings up the heat exchanger problem.

JMCGrage 90k final video

I own a 2023 Maverick Hybrid that I ordered in July 2022. I received my Maverick in October 2023. I have now owned it 18 months and have accumulated 28k miles. This past Friday 4/11/25 I got into my truck and started it to drive to work, the wrench symbol was on along with a powertrain malfunction/reduced power warning.
I drove to work without issue, parked my truck and waited for my local dealership to open. Once they were open I called the service department to make an appointment to get my truck in right away for diagnosis and to do the camera recall while it was in their possession. They told me no problem and they should be finished with both services sometime Monday. Monday passes and no word from Ford. I call Tuesday and my service advisor tells me that everything tested ok and they had completed the recall, so I could pick up my truck.
Once at the dealership I return the loaner, an absolutely horrible Escape, but thats another story. The service advisor leaves to retrieve my Maverick and after being gone for an unusual amount of time comes walking up and tells me I'll be in the horrible Escape a few more days. As she started my Maverick the wrench and warning reappeared.
Last night I received a call from my service advisor. She informs me they have discovered my High Voltage Battery has failed. It is ordered but won't arrive until this Friday 4/17/25 and they should have my Maverick ready for pick up by end of day.
Not sure how common or uncommon this is but my stats are 18 months, 28k miles and a failed High Voltage Battery.

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[HenryFord]

Last night I received a call from my service advisor. She informs me they have discovered my High Voltage Battery has failed. It is ordered but won't arrive until this Friday 4/17/25 and they should have my Maverick ready for pick up by end of day.
Not sure how common or uncommon this is but my stats are 18 months, 28k miles and a failed High Voltage Battery.

Thanks for adding your experience here. Sounds very similar to JMCGarage's story. This is interesting. Please do let us know what happens and your experience. Seems strange that when they put a scanner on the truck that they didn't detect the previous alarms for the HV battery. Things that make me go hmmm....

 

[NYbiomed]

Jeez, could someone give a price on what the HV battery cost to replace, or did I miss it? How was performance affected and was a code thrown…symptoms plz.

TIA

 

[Mikeetch]

Thanks for adding your experience here. Sounds very similar to JMCGarage's story. This is interesting. Please do let us know what happens and your experience. Seems strange that when they put a scanner on the truck that they didn't detect the previous alarms for the HV battery. Things that make me go hmmm....

To be fair the warning/code was not active when I dropped off my Maverick. They did say it showed in the history. My guess is it was causing an intermittent warning as it was failing and once it was active again they were able to diagnose it properly with the scanner.

 

[Mikeetch]

Jeez, could someone give a price on what the HV battery cost to replace, or did I miss it? How was performance affected and was a code thrown…symptoms plz.

TIA

Idk mines under warranty

 

[MakinDoForNow]

Thanks for adding your experience here. Sounds very similar to JMCGarage's story. This is interesting. Please do let us know what happens and your experience. Seems strange that when they put a scanner on the truck that they didn't detect the previous alarms for the HV battery. Things that make me go hmmm....

The previous alarms should be visible on his history records as reported by his truck.

 

[Mark1]

The previous alarms should be visible on his history records as reported by his truck.

What if data collection is turned off. Will they be able to pull up history. Should be able to.

 

[Suzukiridr14]

I was watching some JMCGarage on Youtube at his 90k mile update and he mentioned Ford had to replace his HV battery. I searched here to see if there was anything out there about this, but seems my search kungfu is weak or there isn't a lot out there on it. Anyone know how common this issue is with the HV battery or a root cause?

He did mention the cost of the battery which was covered by warranty really wasn't outrageously expensive, but we really shouldn't be seeing HV failures. If this is a known issue can someone point me in the right direction. He of course mentions the CV axles issues, and he brings up the heat exchanger problem.

JMCGrage 90k final video

I think the HV battery is covered for 8 yrs or 100K miles, something like that, it part of the hybrid system.

 

[Mark1]

I think the HV battery is covered for 8 yrs or 100K miles, something like that, it part of the hybrid system.

Your right. I wonder if there is a depreciation clause where you have to partially pay for anything, especially the battery. Seems like something Ford would sneak in.

 

[The Real Maverick]

I own a 2023 Maverick Hybrid that I ordered in July 2022. I received my Maverick in October 2023. I have now owned it 18 months and have accumulated 28k miles. This past Friday 4/11/25 I got into my truck and started it to drive to work, the wrench symbol was on along with a powertrain malfunction/reduced power warning.
I drove to work without issue, parked my truck and waited for my local dealership to open. Once they were open I called the service department to make an appointment to get my truck in right away for diagnosis and to do the camera recall while it was in their possession. They told me no problem and they should be finished with both services sometime Monday. Monday passes and no word from Ford. I call Tuesday and my service advisor tells me that everything tested ok and they had completed the recall, so I could pick up my truck.
Once at the dealership I return the loaner, an absolutely horrible Escape, but thats another story. The service advisor leaves to retrieve my Maverick and after being gone for an unusual amount of time comes walking up and tells me I'll be in the horrible Escape a few more days. As she started my Maverick the wrench and warning reappeared.
Last night I received a call from my service advisor. She informs me they have discovered my High Voltage Battery has failed. It is ordered but won't arrive until this Friday 4/17/25 and they should have my Maverick ready for pick up by end of day.
Not sure how common or uncommon this is but my stats are 18 months, 28k miles and a failed High Voltage Battery.

Defects can occur. Detached wire. Cracked solder. Bad sensor, and so on.

The main theme is, they usually do not "Wear out" within 15 years / 250,000 miles.

That said, I understand to some, if you can't drive it, "broken is broken" and there is no comfort in learning it was a bad diode and not a bad battery cell.

 

[MakinDoForNow]

What if data collection is turned off. Will they be able to pull up history. Should be able to.

If data collection is turned off and you don't turn it on every week or two it will probably roll off memory as memory fills up. Will depend on how much memory Ford installed. If you get an error code and collection is turned off just check your truck daily and see how long the code remains???

 

[HeyBales]

To be fair the warning/code was not active when I dropped off my Maverick. They did say it showed in the history. My guess is it was causing an intermittent warning as it was failing and once it was active again they were able to diagnose it properly with the scanner.

There would have been the history of that code, and likely a lot of readings at the moment of the error, very specific in the BECM to the HVB.

Now, perhaps they wanted it actually in the issue state to see if this was a whole battery replacement required, or merely a sensor or diode or battery cell or whatever.

Frankly - either way - they should have been keeping the truck and not pretended it seemed to be fine.
That kind of attitude for the HVB seems like a safety issue.
Maybe the code was such it wasn't say a fire potential issue, and they knew you'd just experience the same thing again eventually, but not be stranded.

Glad it turned out how it did.
At least you were not a case of having months on end of no driving.

 

[Cherokee]

Stop falling for, ‘Click Bait’ on the internet.
Your drive battery is a non issue.

 

[HenryFord]

There would have been the history of that code, and likely a lot of readings at the moment of the error, very specific in the BECM to the HVB.

Now, perhaps they wanted it actually in the issue state to see if this was a whole battery replacement required, or merely a sensor or diode or battery cell or whatever.

Frankly - either way - they should have been keeping the truck and not pretended it seemed to be fine.
That kind of attitude for the HVB seems like a safety issue.
Maybe the code was such it wasn't say a fire potential issue, and they knew you'd just experience the same thing again eventually, but not be stranded.

Glad it turned out how it did.
At least you were not a case of having months on end of no driving.

That was my thinking as well. The dealer service folks seem to have been lax here if they were going to let that go back out. The customer reported the issue and it was surely logged. Like you said it wasn't "currently" in that state so maybe that was the deciding factor, but it does give reason to pause. Looking forward to seeing if it is handled well and addressed. If enough of these surface then it may be able to be linked to specific packs and batches of batteries. Since not many have mentioned it here on the forum maybe it isn't that big of an issue to be concerned about. Time will tell I guess.

 

[HenryFord]

Stop falling for, ‘Click Bait’ on the internet.
Your drive battery is a non issue.

I think if you watch any of JMCGarage you will see the updates are not click bait. He could have easily highlighted that issue and made it clickbait, but he didn't. He was just a Maverick owner who drives A LOT that posted regular updates. I think if you look you will see he wasn't playing that game. Seemed pretty straight up legit and so far I don't see any reason to doubt it happened just like he said. Is it an issue? Well that is why I came here. If there is even a wiff of something going on forums are the place stuff gets beat into the ground. I don't see posts about it so now I am assuming the frequency must be pretty low, but still something I will be keeping an eye open for.

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