2024 Nautilus frequently in battery saver mode

[jeffcarp]

Many of those features are designed to not work if the vehicle is in battery saver mode. Try resetting the BMS — if you think the dealer might not have. It might address the issues.

What does reset the BMS mean?

 

[swindler]

What does reset the BMS mean?

Sorry, it's the Battery Management System, which is the nasty guy that keeps invoking the battery saver mode. But upon review, it should self-reset if the vehicle sits for at least 8 hours. I guess if you believe the dealer charged the battery, (it has to be above a threshold), then see what happens in the morning.

 

[jeffcarp]

Sorry, it's the Battery Management System, which is the nasty guy that keeps invoking the battery saver mode. But upon review, it should self-reset if the vehicle sits for at least 8 hours. I guess if you believe the dealer charged the battery, (it has to be above a threshold), then see what happens in the morning.

Yes, the dealer said that they keep their new batteries on some kind of a charging system in storage so they are full when they are installed.

It will sit for over 8 hours overnight tonight. Should I drive it tomorrow after that to pull it out of battery saver mode, and then the BMS should have reset itself?

 

[swindler]

Yes, the dealer said that they keep their new batteries on some kind of a charging system in storage so they are full when they are installed.

It will sit for over 8 hours overnight tonight. Should I drive it tomorrow after that to pull it out of battery saver mode, and then the BMS should have reset itself?

If I have this right…the BMS should self-reset overnight and afterwards consider the battery 'okay'.

You won't exit battery saver mode until you start the vehicle in the morning. It should not re-enter battery saver mode (since the BMS is now happy) and functions that were affected by the low battery should resume normal behavior.

And I have the deed for Alaska which I'll sell you at a real cheap price.

At least one of the paragraphs above are false.

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[angore]

Well, the dealer had the car all day today. On the way to the dealer, while in BlueCruise mode, using the turn signal wouldn't activate a lane change. The dealer said the battery was bad and put in a new battery. They confirmed all software was updated, and ran a diagnostic on the APIM(?) module. The new battery was supposedly fully charged.

I drove home 30 miles. BlueCruise no longer works. All of the settings are set as required and as they were before my service. When I get home the car goes into battery saver mode immediately after turning it off. The door keypad is dark and won't turn on, but still works if I happen to hit the padlock. The two lights in the cargo bay don't come on. Back to the dealer I guess.

Too bad. The variability is scary. I would call the Concierge and see what they say since they can check the vehicle. Do they ever check the charging system any more? With all the tech, it does not seem to detect battery issues real time.

 

[jeffcarp]

If I have this right…the BMS should self-reset overnight and afterwards consider the battery 'okay'.

You won't exit battery saver mode until you start the vehicle in the morning. It should not re-enter battery saver mode (since the BMS is now happy) and functions that were affected by the low battery should resume normal behavior.

And I have the deed for Alaska which I'll sell you at a real cheap price.

At least one of the paragraphs above are false.

Well, it looks like you nailed this diagnosis. I went for a 30-minute drive this morning after the car rested overnight after the battery replacement yesterday. Every single one of the things that wasn't working yesterday works today. My BlueCruise works. The automatic lane change works. The red keypad on the door is back. The two lights and the cargo area are back on. The Lincoln Way app no longer reported that the car was in battery saving mode, however, the app did say that connectivity services weren't turned on, which I know is not true. I removed the car from the app and added it back which triggered some acceptances within the car, and now the app works fine again too.

As of right now, knock on wood, I don't have any issues with the car.

It's crazy how much appears to be able to go wrong with a bad battery. You'd think that would be easy to detect and warn me about either in the app or in the Vehicle Health Report.

Your knowledge is appreciated. Thank you.

 

[markfm]

Well, it looks like you nailed this diagnosis. I went for a 30-minute drive this morning after the car rested overnight after the battery replacement yesterday. Every single one of the things that wasn't working yesterday works today. My BlueCruise works. The automatic lane change works. The red keypad on the door is back. The two lights and the cargo area are back on. The Lincoln Way app no longer reported that the car was in battery saving mode, however, the app did say that connectivity services weren't turned on, which I know is not true. I removed the car from the app and added it back which triggered some acceptances within the car, and now the app works fine again too.

As of right now, knock on wood, I don't have any issues with the car.

It's crazy how much appears to be able to go wrong with a bad battery. You'd think that would be easy to detect and warn me about either in the app or in the Vehicle Health Report.

Your knowledge is appreciated. Thank you.

On my '17 RX (ICE), end of '24 I had a bucket of warnings related to power/transmission/sensors, the car reduced to limp-home level power (10-15 mph short of flooring it). Turns out my 7 yo regular 12V battery had finally given up (shame on me, hadn't capacity-tested it in some time), combined with critters having gnawed insulation on 2 wires

(Due to the mix of messages I suspected something electrical. I used our insurance free tow coverage to the dealer from our home, since debugging outside in cold winter weather isn't my idea of fun.)

 

[markfm]

I am on android 14. Because of that my phone as key has stopped working.The communication from Lincoln says they are working on a solution and not to delete the existing setup. I remember you recommending the deep sleeping apps thing before when I complained about phone as key using up my phone battery too quickly, but after doing this my phone no longer worked reliably to use as a key.

See Phone As A Key issue - perhaps the S22 will also have a SW update either this month or next that fixes PAAK. (It might be some entirely separate item, no relationship to Deep sleep, that needed a fix on the Samsung side)

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[Houtex]

See Phone As A Key issue - perhaps the S22 will also have a SW update either this month or next that fixes PAAK. (It might be some entirely separate item, no relationship to Deep sleep, that needed a fix on the Samsung side)

Thanks PAAK is now working again after updating phone.

 

[angore]

You can reset the BMS manually without waiting.

 

[jeffcarp]

You can reset the BMS manually without waiting.

It would be helpful to explain how.

 

[angore]

It was posted somewhere on this forum but I went to Haz's forum. What the app reports may be a different story.

Battery monoriting reset

Hello, Could anyone tell me how to reset the BMS on 2013 Edge sel , without tools. I get low battery message. Battery is only 6 months old and tested fine. Thanks Larry

www.fordedgeforum.com

To reset the battery monitor on any Ford product:

1. Make sure all windows & doors are closed.
2. Turn ignition switch to on (don't start car). (assume accessory mode). Wait 10 seconds.
3. Flash highbeams 5 times using the "flash to pass" stalk on the side of the steering wheel (on/off, on/off, on/off, on/off, on/off).
4. Press brake pedal 3 times in 10 seconds.
5. The battery light on instrument cluster will flash indicating the BMS has been reset.



The existence, usage, and effects of a Battery Monitoring System (BMS) Reset varies across the generations of Edge/MKX/Nautilus vehicles, according to my survey of relevant sections in each generation of Workshop Manuals.

Gen 2 vehicles' (2015-2023 Edge, 2016-2018 MKX, 2019-2023 Nautilus) Electrical Management System employs the most sophisticated and most effective charging and electrical circuit load shedding strategies, based upon algorithms in the Body Control Module (BCM) software, battery age calculations from a time-in-service counter, and battery state-of-charge judgements from up to 8-hours of battery voltage history stored in the BCM, as measured by the Battery Monitoring Sensor mounted on the negative battery terminal clamp.

Performing a BMS Reset on a Gen 2 vehicle is reserved for new battery installation only, per the Workshop Manual, which infers the BMS Reset establishes a new battery time-in-service counter start point, and erases the battery voltage history, which creates a new baseline of data for the algorithms in the BCM software to apply toward Electrical Management System charging and load shedding outcomes.

This limited use of a BMS Reset in Gen 2 vehicles provides only one method for dealing with invalid battery voltage data created when jump starting or externally charging the battery with the device's negative lead improperly attached to the negative battery post, which disrupts the Battery Monitoring Sensor's measurements. In this case, a valid span of historical values must be recreated by the leaving the vehicle undisturbed in sleep mode for a period of 8 hours, with no current draws above 300mA. The attainment of sleep mode occurs more promptly by locking the vehicle with all doors, hood, and liftgate closed, and with no subsequent presses of remote key/fob buttons.

If the 8 hour undisturbed vehicle corrective method is not applied after faulty data is recorded in the BCM, then Gen 2 load shedding events may occur sooner than actually needed until calibration is otherwise fulfilled.

It's worth noting that properly connecting the jump starter or external battery charger negative lead onto a body ground-point (shock tower sheet metal bolt head) avoids the faulty data creation and eliminates the need for 8 hours of undisturbed vehicle sleep mode, with normal state-of-charge calibration occurring during 4-6 hour periods of everyday vehicle downtime in sleep mode.

Gen 1+ vehicles' (2011-2014 Edge, 2011-2015 MKX) Battery Management System lacks Gen 2's BCM algorithms and battery age monitoring, but it still achieves enhanced charging and load shedding performance using the same up to 8-hours of battery voltage history stored in the BCM, as measured by the Battery Current Sensor mounted on the negative battery terminal clamp.

In Gen 1+ vehicle Workshop Manuals, surprisingly, no mention is made about performing a BMS Reset when a new battery is installed. BMS Reset is to be employed when instances of faulty or an absence of battery voltage data history occurs in the BCM.

In Gen 1+ vehicles, to avoid the need for a BMS Reset, jump starting and external battery chargers negative lead should be connected to and engine or body ground point the key/ignition status should be 'ON', which allows the BCM to record battery voltage values when the external device is in use. If the key/ignition status is 'OFF' or the device's negative lead is attached to the negative battery post, then the BMS Reset must be performed, or as an alternative, leaving the vehicle undisturbed in sleep mode for a period of 8 hours. The attainment of sleep mode occurs more promptly by locking the vehicle with all doors, hood, and liftgate closed, and with no subsequent presses of remote key/fob buttons.

If a BMS Reset or the 8 hour undisturbed vehicle method is not applied after faulty data is recorded in the BCM, then Gen 1+ load shedding events may occur sooner than actually needed.

Gen 1 vehicles' (2007-2010 Edge/MKX) Powertrain Control Module (PCM) simultaneously monitors and controls the charging system and battery voltage, without any battery age awareness or battery state-of-charge-based load shedding capability. Lacking these, no BMS Reset procedure exists for Gen 1 vehicles.

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[bbf2530]

It was posted somewhere on this forum but I went to Haz's forum. What the app reports may be a different story.

Battery monoriting reset

Hello, Could anyone tell me how to reset the BMS on 2013 Edge sel , without tools. I get low battery message. Battery is only 6 months old and tested fine. Thanks Larry

www.fordedgeforum.com

To reset the battery monitor on any Ford product:

1. Make sure all windows & doors are closed.
2. Turn ignition switch to on (don't start car). (assume accessory mode). Wait 10 seconds.
3. Flash highbeams 5 times using the "flash to pass" stalk on the side of the steering wheel (on/off, on/off, on/off, on/off, on/off).
4. Press brake pedal 3 times in 10 seconds.
5. The battery light on instrument cluster will flash indicating the BMS has been reset.

Hi gang. For the sake of clarity, and to avoid possible confusion for others:
Number 2 in the instructions quoted above is not “accessory mode”. It is actually the “Ignition On” position. It turns on the ignition system without starting the vehicle. This is a common error, and there is an important distinction, so a further explanation is below.

“Ignition On” mode- Pressing the Start button once (foot off brake) places the vehicle systems into “Ignition On” mode. The dashboard warning lights light illuminate, blower motor will run etc.

“Delayed Accessory” mode- On the other hand, pressing the Start button twice (foot off the brake will place the vehicle systems into “Accessory Mode” (or more accurately, “Delayed Accessory Mode”).
In this case, the dashboard warning lights, blower motor etc. do not run. Only the Audio system and power windows will have power to operate. And they will turn off after 10 minutes. That is the “Delayed Accessory Mode”, as controlled by the battery saver feature.
This mode comes in handy when we want to listen to the audio system or use the windows without the full power drain of the Ignition on mode.

“Accessory Mode”- After the 10 minute “Delayed Accessory Mode” timeout (and at other times), we can then access the Audio System alone by pressing the Audio system power button. Doing so will turn the Audio system back on.
This is Accessory mode. Be patient though, because it can sometimes take several seconds to power back up. And if you press it a second time before it powers up, you’ll turn it off.
Again, this mode comes in handy when we want to listen to the audio system or use the windows without the full power drain of the Ignition on mode )and Delayed Accessory Mode gas times out), without having to go through the foot-off-the-brake-two-push-of-the-Start button dance again.

Several things to keep in mind. First, this information used to be contained in our Lincoln Owner Manuals, but may have been left it in some more current manuals (I can’t read them all).
Also, the elimination of many hard buttons may have changed the process of “Delayed Accessory” versus “Accessory Mode” on more recent vehicles. So keep in mind features can change from model year to model year, or a vehicle may have a malfunction/glitch. However, this is the correct operation for the majority of current Lincoln vehicles.

However, the relationship of “Ignition On Mode” (foot off brake, press Start button once), and “Delayed Accessory Mode” (foot off brake, press Start button twice) has not changed.

Hope this information helps (and is understandably written), and good luck.

 

[angore]

On my Nautilus, If I press the "start/on" button without pressing the brake, the vehicle goes into "Full Accessory" and there is a message stating that. Everytthing seems to full on (AC blower, etc) but READY does not illuminate. I have never seen a need to press a button twice. I interpet the instructions for BMS reset is that it is full accessory mode.

Manual



With the foot on the brake the ready light appears so vehicle is ready for drive.

I can turn on the radio without doing anything by pushing the round knob but suspect the fob must be present.

Then there is the mode where features (like radio) operate after turned off until a door is opened. This is when I can push the knob and radio comes back on. I do not know how long/

 

[bbf2530]

On my Nautilus, If I press the "start/on" button without pressing the brake, the vehicle goes into "Full Accessory" and there is a message stating that. Everytthing seems to full on (AC blower, etc) but READY does not illuminate. I have never seen a need to press a button twice. I interpet the instructions for BMS reset is that it is full accessory mode.

Manual
View attachment 22910


With the foot on the brake the ready light appears so vehicle is ready for drive.

I can turn on the radio without doing anything by pushing the round knob but suspect the fob must be present.

Then there is the mode where features (like radio) operate after turned off until a door is opened. This is when I can push the knob and radio comes back on. I do not know how long/

Hi angore. I respect your opinion and preferences. However, for those of us who sometimes/often have the occasion to be sitting in our vehicle, perhaps waiting for someone/something, and wish to listen to the audio system or use the power windows with the vehicle engine off, there is no need to drain the battery by having the blower motor running, dash lights lit up etc.

Therefore, many of us do have a need for Accessory mode where only the audio system and power windows are active. No blower motor, no illuminated dash lights, etc.

So for those of us who have that need, pressing the Start button twice with our foot off the brake avoids unnecessary battery drain.

That would seem to be an important feature, especially for all the owners here worried about excessive battery drain, Deep Sleep Mode, putting their vehicles on trickle chargers etc. etc.

As previously stated, pressing the Start button twice, no foot on brake, enables Delayed Accessory mode, which will allow use of the audio and power windows for 10 minutes (or until a front door is opened), with no blower motor or other battery drain.

Pressing the audio power button turns on the audio system with no 10 minutes timer. Opening the door will not turn it off. So it will eventually kill the battery.
I use both, according to need and within reason.

However again, I respect your choice to use your vehicle and your battery however you see fit.

Hopefully the information will help others though.

Good luck.

 

[Steve_C]

.....for those of us who sometimes/often have the occasion to be sitting in our vehicle, perhaps waiting for someone/something, and wish to listen to the audio system or use the power windows with the vehicle engine off, there is no need to drain the battery by having the blower motor running, dash lights lit up etc.
....So for those of us who have that need, pressing the Start button twice with our foot off the brake avoids unnecessary battery drain.
....That would seem to be an important feature, especially for all the owners here worried about excessive battery drain, Deep Sleep Mode, putting their vehicles on trickle chargers etc. etc.

Good luck.

I agree. Why ask for trouble usurping the battery when you already know the vehicle has problems with power conservation/battery management to begin with?
Now, if I had *Ken Mattingly sitting in the front seat, maybe I would chance it, but otherwise I would have to have to have a battery booster on board (which I do not have) in the likely event of excessive battery drainage...!

*Ken Mattingly (RIP), Originally slated astronaut for Apollo 13 crew...
Mattingly is credited with enabling CM Odyssey to power back up with the limited power supply available.
He used the amperage draw required to determine the sequence of CM power up based on the limited battery amperage available to do it.
It came down to milliamps, and his calculations saved the mission from total disaster, bringing the crew home safely.

______________________________

 

[swindler]

I agree. Why ask for trouble usurping the battery when you already know the vehicle has problems with power conservation/battery management to begin with?
Now, if I had *Ken Mattingly sitting in the front seat, maybe I would chance it, but otherwise I would have to have to have a battery booster on board (which I do not have) in the likely event of excessive battery drainage...!

*Ken Mattingly (RIP), Originally slated astronaut for Apollo 13 crew...
Mattingly is credited with enabling CM Odyssey to power back up with the limited power supply available.
He used the amperage draw required to determine the sequence of CM power up based on the limited battery amperage available to do it.
It came down to milliamps, and his calculations saved the mission from total disaster, bringing the crew home safely.

…a significant story arc in the splendid film Apollo 13.

 

[angore]

Hi angore. I respect your opinion and preferences. However, for those of us who sometimes/often have the occasion to be sitting in our vehicle, perhaps waiting for someone/something, and wish to listen to the audio system or use the power windows with the vehicle engine off, there is no need to drain the battery by having the blower motor running, dash lights lit up etc.

I am not sure why you say it is my preference. I was discussing putting it in accessory mode (Lincoln calls it Full Accessory Mode) in order to reset the BMS since there is no key. I would not leave it that position. It is usually needed though to play with infotainment if you do not want to start the vehicle.

"for those of us who have that need, pressing the Start button twice with our foot off the brake avoids unnecessary battery drain.". This is the normal mode after completing a drive and you can listen to radio so usually encountered in normal drive. \

With my Nautilus, you do not need to push the button twice to turn on radio. It will come on when you push the center knob so no need for the 2 push step. Unlike the end of drive accessory mode, it does NOT turn off when you open the door but have not determined how long it would stay on. I suspect it will go off if you exit and take fob with you. I will test that later.

 

[swindler]

"for those of us who have that need, pressing the Start button twice with our foot off the brake avoids unnecessary battery drain.". This is the normal mode after completing a drive and you can listen to radio so usually encountered in normal drive.

Way too often, I use the radio-only mode when I sit in the car and wait for my wife to get back from the store. It's the only time I get to turn it up.

(Presuming the temperature is moderate, else I run the vehicle.)

 

[bbf2530]

I am not sure why you say it is my preference. I was discussing putting it in accessory mode (Lincoln calls it Full Accessory Mode) in order to reset the BMS since there is no key. I would not leave it that position. It is usually needed though to play with infotainment if you do not want to start the vehicle.

"for those of us who have that need, pressing the Start button twice with our foot off the brake avoids unnecessary battery drain.". This is the normal mode after completing a drive and you can listen to radio so usually encountered in normal drive. \

With my Nautilus, you do not need to push the button twice to turn on radio. It will come on when you push the center knob so no need for the 2 push step. Unlike the end of drive accessory mode, it does NOT turn off when you open the door but have not determined how long it would stay on. I suspect it will go off if you exit and take fob with you. I will test that later.

Hi angore. You have a misconception or two in your post about how the system actually works.
For example, I never stated or inferred that the Start button needed to be pressed twice to listen to the radio. That is simply one way to keep the audio system operating. Not the only one. And it eliminates the blower motor, warning lights etc. As I explained in my previous posts.

So I’m not sure why you even mentioned that.
And I clearly stated how pressing the Audio power button works. Using the Audio power button allows us to listen to the Audio system with the vehicle off, and eliminates the audio system turning off when a front door is opened. That is a fact you can check, but it was covered in my previous replies However, I do always recommend we check things for ourselves and not assume others know the answers.

In addition, you did not cover some of the variables that I did, until attempting to do so just now.
I covered the variables, and others understood it. There are essentially 3 main modes, according to how and when the Start button is pressed (essentially 3 different modes). And I covered pressing the Audio power button and how that works.

Again, others understand and can use the information to their benefit. Instead of me repeating it all, please reread my previous posts.

Good luck.