SSM 53801: 2022-2025 Maverick Hybrid 12V Battery Drain Issue Update Fix Released!

[johnDeere]

23 mav. hybrid XLT.
I read after less than a hour, the load coming out of the battery should draw no more that 1 amp.
That has been true until now. ( I guess I am watching my remote volt meter more).
I drove to work, parked, and then at 10:00 had to go to the post office, came back at 10:20, and turned off the truck.
Well at 12:00 I still had a battery drain of about 2.5 amps. (Normally it less that .5 amps).
Nothing was visibility on, (I looked through the window to see my remote meter). nor did I hear anything but I could hear relays clicking now and then.
My voltage was down to 11.8 V, normally it would be 12.5V.
I remotely started the truck with ford pass.
Wouldn't it be nice if there was a option to automatically turn the truck to ready before it sends out the message of sleep mode.?

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[HeyBales]

I am really fortunate to have a dealer who cares about the customer and a technician who really knows Mavericks especially since he owns one. I took mine in yesterday for service and had SSM 53801 done. So far, no deep sleep message. Lets hope it stays that way.

According to the tech, there was something about DTCS U0164:00 not clearing from PCM after doing the SSM update. He did an update to PCM to clear that and it triggered an update to SOBDMC. That cleared U0164:00. More info about the code can be found here https://www.obd-codes.com/u0164.

I'd expect a PCM error communicating to ACCM while ACCM is offline getting the update.
Odd a PCM update was required to clear that code though. If he meant update software.
Which if really an update to PCM and it's offline - all sorts of modules would have been complaining, so most must have cleared on their own, except SOBDMC.
Or there really have been updates to several modules since your last recall update on rearview camera perhaps.

 

[HeyBales]

23 mav. hybrid XLT.
I read after less than a hour, the load coming out of the battery should draw no more that 1 amp.
That has been true until now. ( I guess I am watching my remote volt meter more).
I drove to work, parked, and then at 10:00 had to go to the post office, came back at 10:20, and turned off the truck.
Well at 12:00 I still had a battery drain of about 2.5 amps. (Normally it less that .5 amps).
Nothing was visibility on, (I looked through the window to see my remote meter). nor did I hear anything but I could hear relays clicking now and then.
My voltage was down to 11.8 V, normally it would be 12.5V.
I remotely started the truck with ford pass.
Wouldn't it be nice if there was a option to automatically turn the truck to ready before it sends out the message of sleep mode.?

After 75 minutes draw should be down to 25 mA normally, spikes to 50 mA, appears hourly.

For sure a remote start option before Deep sleep kills ability would be smart. Just a notice would likely be enough. Hey, we think you have 30 min before not possible, remote start if desired.
Since they don't know where truck is running (enclosed space), they can't auto-start.

I've never timed how long accidentally left on lights finally get turned off, perhaps that same 75 min, or shorter with Battery Saver enabled.
Like the service manual said - usually 1 light is about 1 A.

 

[johnDeere]

After 75 minutes draw should be down to 25 mA normally, spikes to 50 mA, appears hourly.

For sure a remote start option before Deep sleep kills ability would be smart. Just a notice would likely be enough. Hey, we think you have 30 min before not possible, remote start if desired.
Since they don't know where truck is running (enclosed space), they can't auto-start.

I've never timed how long accidentally left on lights finally get turned off, perhaps that same 75 min, or shorter with Battery Saver enabled.
Like the service manual said - usually 1 light is about 1 A.

I looked at my volt meter in my truck and I had to intervene before it went into deep sleep mode .
This was past the 75 minutes ford mentioned.
I was pulling 2.5 amps for 4 hours after I turned off the truck.

I used forpass to start the truck, so that still worked. (I had 11.7 volts.)
My load test I did months ago showed that was the low end of battery voltage before it load dumps.
I did the tests, left the lights on, but after 15 the truck turned off, so I had to do it again, I kept doing this until it messaged me. I know this is not a true test since the lights pull more amps than what I was seeing today.

I started the truck and it was charging the battery at about 50amps, it did drop down and after 15 minutes, I turned the truck off.
30 minutes later, my amps were down to less than 50 mA. and voltage was 12.4V

So there is a unknown load going on.
We all know that, but this is new to my truck after 4 months of no problems.

Correct about auto starting, since you don't know if the truck is in a garage or not, ( but the truck does have auto start schedules), but it could activate the DC to DC converter and charge the battery. I did that, just turn on the ignition to on but not to ready, and it charged the battery, and the engine did not start, but I can see if the HVB was low, that would be another problem.

After seeing what happened today, its NOT the BMS, it NOT because my battery is not a AGM.
There is a unknown load draining the battery. Now its time to see where the current is going.
Now this could be different on other mavericks.

 

[marskren]

SSM 53801 2022-2025 Maverick - Hybrid - 12V Battery Drain - Built On Or Before 17-Feb-2025

Some 2022-2025 Maverick vehicles with a hybrid powertrain and built on or before 17-Feb-2025 may exhibit a 12V battery drain. This may be due to the software installed in the air conditioning control module (ACCM). To correct this condition, perform a battery condition test as outlined in Workshop Manual (WSM), Section 414-01 Battery, Mounting and Cables > Diagnosis and Testing > Pinpoint Test A. Service the battery as necessary. Connect a battery charger such as Rotunda GRX-3590 or DCA-8000 to the 12-volt battery. Download and run the "air conditioning control module (ACCM) software update" application in the Ford Diagnosis And Repair System (FDRS) scan tool. If the battery was replaced, download and run the "BCM-reset the battery monitoring sensor learned values" application in FDRS. For claiming, use causal part 19703 and applicable labor operations in Section 10 of the Service Labor Time Standards (SLTS) Manual.

They have coded the causal part number to the a/c compressor, so it will be covered 3/36, and I already checked and it is covered under Ford Premium ESP also...(not sure about the other level contracts)

Has anyone taken their Maverick in for the "fix" and have problems with your truck accepting the upsdate? After they replaced my weakened (surprise, right - it's been happening since last October for me), they started the update. Finally, after 3.5 hours, they sent me home in a loaner. He said, "When we did the update, it corrupted it." I am hoping that "it" was the file itself. But they were on with Ford when I left Wednesday. I'm getting ready to call to ask how things are going.

 

[SafetyGuy]

Has anyone taken their Maverick in for the "fix" and have problems with your truck accepting the upsdate? After they replaced my weakened (surprise, right - it's been happening since last October for me), they started the update. Finally, after 3.5 hours, they sent me home in a loaner. He said, "When we did the update, it corrupted it." I am hoping that "it" was the file itself. But they were on with Ford when I left Wednesday. I'm getting ready to call to ask how things are going.

I am standing by, hoping for a positive outcome, watching for your update!

Dang!

Andy

 

[marskren]

I am standing by, hoping for a positive outcome, watching for your update!

Dang!

Andy

Well.....maybe positive, maybe??? I just talked with them. Now I know what "it" is. The update took out my AC compressor. Of course that isn't a "stock" item. It's ordered and they are hoping it will be in the first of the week to have it fixed by the middle to end of next week. Darn! I sort of giggled when I read someone's post that said they were going to wait 6 months for them to sort of the bugs. Well, maybe that person was more right than I thought. Mine had been draining all the time! My inside lights never came on and my remote features were always disabled.

 

[JJTech]

Yeah, I was just about to apply the update with FDRS. Maybe I’ll hold off for now…

 

[SafetyGuy]

Well.....maybe positive, maybe??? I just talked with them. Now I know what "it" is. The update took out my AC compressor. Of course that isn't a "stock" item. It's ordered and they are hoping it will be in the first of the week to have it fixed by the middle to end of next week. Darn! I sort of giggled when I read someone's post that said they were going to wait 6 months for them to sort of the bugs. Well, maybe that person was more right than I thought. Mine had been draining all the time! My inside lights never came on and my remote features were always disabled.

At least it is all covered and I do believe they gave you a loaner...I just hope it wasn't like a Pontiac Sunfire-esque loaner I had many years ago...yeah, it was bad.

Forge on,

Andy

 

[Darryl]

Correct me if I'm wrong but this has nothing to do with the ac compressor and just updates the HVAC module software. So what does the compressor being covered under warranty have to do with it?

The SSM is updating the ACCM (Air Condition Control Module) which is integral to the compressor and only present on Hybrids. . You’re thinking of the HVAC module (common to ALL systems) which is inside the vehicle in the dash.

 

[Darryl]

Yeah, I was just about to apply the update with FDRS. Maybe I’ll hold off for now…

I say go ahead. It was probably a one time fluke. It could have been something as simple as the computer that was doing the update lost connection mid update and was unable to recover the software depending on where it was in the process.

 

[inline_five]

The SSM is updating the ACCM (Air Condition Control Module) which is integral to the compressor and only present on Hybrids. . You’re thinking of the HVAC module (common to ALL systems) which is inside the vehicle in the dash.

Interesting, OK thank you for the more detailed explanation!

 

[HeyBales]

The SSM is updating the ACCM (Air Condition Control Module) which is integral to the compressor and only present on Hybrids. . You’re thinking of the HVAC module (common to ALL systems) which is inside the vehicle in the dash.

Well - that probably explains my DTC's showing in the communication errors.
Updated to prior post - the ACCM reset didn't prevent another error showing up.

I noticed today, as I got the Forscan connected with key in Acc mode first and it took awhile, had the communication error with ACCM again.

So I'll updated my former post in this thread - that error may be purely because of only being in Acc mode for so long. Everything's not truly powered up yet.
So not really a useful observation.

 

[HeyBales]

I looked at my volt meter in my truck and I had to intervene before it went into deep sleep mode .
This was past the 75 minutes ford mentioned.
I was pulling 2.5 amps for 4 hours after I turned off the truck.

I used forpass to start the truck, so that still worked. (I had 11.7 volts.)
My load test I did months ago showed that was the low end of battery voltage before it load dumps.
I did the tests, left the lights on, but after 15 the truck turned off, so I had to do it again, I kept doing this until it messaged me. I know this is not a true test since the lights pull more amps than what I was seeing today.

I started the truck and it was charging the battery at about 50amps, it did drop down and after 15 minutes, I turned the truck off.
30 minutes later, my amps were down to less than 50 mA. and voltage was 12.4V

So there is a unknown load going on.
We all know that, but this is new to my truck after 4 months of no problems.

Correct about auto starting, since you don't know if the truck is in a garage or not, ( but the truck does have auto start schedules), but it could activate the DC to DC converter and charge the battery. I did that, just turn on the ignition to on but not to ready, and it charged the battery, and the engine did not start, but I can see if the HVB was low, that would be another problem.

After seeing what happened today, its NOT the BMS, it NOT because my battery is not a AGM.
There is a unknown load draining the battery. Now its time to see where the current is going.
Now this could be different on other mavericks.

I'd like to hear @Darryl 's comment on this parasitic draw search.

The fuse box under the hood, that actually disconnects from the 12V system when you open it up to get to the fuses (and appears to feed the one inside in foot well) - is there a special tool that allows keeping that one live while it's open to access the fuses?

It that common on other models, or mainly/only a hybrid thing?
Never seen such a system.

Just curious.
Thanks.

 

[marskren]

At least it is all covered and I do believe they gave you a loaner...I just hope it wasn't like a Pontiac Sunfire-esque loaner I had many years ago...yeah, it was bad.

Forge on,

Andy

They sent me out with a new Bronco! That was a surprise for me, but the service manager said they always use new vehicles as loaners! Wow!

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