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Hello all, I'm new to the community. I just purchased a 2019 Mustang Eco boost. All ready having problems with battery drain. The car is garage kept, after approximately 4 days I would receive a message of car going into deep sleep mode. Try to start the car the next morning and battery was completely dead. I charge the battery then took it to ford and they couldn't find anything wrong. That was a couple of weeks ago. I'm still getting messages of deep sleep mode after the car has been sitting just for one day. Ford says if battery drains again call them and get it towed to the dealership. This is embarrassing, let alone outrageous. This is my 1st ford and definitely not a good impression. Anyone else having this issue?
 

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Welcome to the site! Sorry to hear about the issue you're having, i'm going to move your thread for a better response. Best of luck.
 

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Just curious, any update?
I have only received one of those messages so far, no problems yet (on my 2020). Kinda cool option there for battery maintenance though.
Once thing I've noticed a few times (maybe twice) in my apx 1 month of ownership, sometimes, getting out of the car the nav/radio display doesn't seem to shut off right away. In fact I watched it glow the screen it seems more than a minute to the point I opened the car door and closed and locked it again, then it shut off right away.
My 2015 Mazda3 would do something similar on occasion too (they were known to have Infotainment issues) but never had it drain the battery though on that, or the Mustang yet hope it don't!
Hope yours gets fixed too.
T
 

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Hello all, I'm new to the community. I just purchased a 2019 Mustang Eco boost. All ready having problems with battery drain. The car is garage kept, after approximately 4 days I would receive a message of car going into deep sleep mode. Try to start the car the next morning and battery was completely dead. I charge the battery then took it to ford and they couldn't find anything wrong. That was a couple of weeks ago. I'm still getting messages of deep sleep mode after the car has been sitting just for one day. Ford says if battery drains again call them and get it towed to the dealership. This is embarrassing, let alone outrageous. This is my 1st ford and definitely not a good impression. Anyone else having this issue?
I just bought a 2019 mustang with the same issues its in the shop again right now. They are going to look at the modules that put the car to sleep.Glad its under warranty still.
 

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I have an '18 and have not received that message (it may be on newer MYs only) but did receive a message on the centre screen that said "System Off to Save Battery Please turn ignition off or start engine" when I hopped into the car one day after it had sat all week. Of course, with Covid I'm working from home and the car was, at that point, getting a lot of short hops. I charged the battery and have made a habit of taking it for a 40+ minute drive once a week on the highway and no messages since doing that.
 

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Man Please. !
Hate to hear you are embarrased that you had a battery drain.
No need to be. Things happen to new cars with all the electronics.

My Buddy has a 2019 2.3 Ecoboost.
I have a 2020 2.3 ecoboost.

Neither of us has had a problem

I would of already gone. And this is just me.
To batteries Plus and had them to put me in a new Duracell battery.
I would of ended it right there if there was a battery problem.

I sit in mine with my new Escort Redline radar detector working with the setting.
And listening to the radio.

It comes on and tells me to crank the car.


Hope you figure out what your problem is.
 

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Hello all, I'm new to the community. I just purchased a 2019 Mustang Eco boost. All ready having problems with battery drain. The car is garage kept, after approximately 4 days I would receive a message of car going into deep sleep mode. Try to start the car the next morning and battery was completely dead. I charge the battery then took it to ford and they couldn't find anything wrong. That was a couple of weeks ago. I'm still getting messages of deep sleep mode after the car has been sitting just for one day. Ford says if battery drains again call them and get it towed to the dealership. This is embarrassing, let alone outrageous. This is my 1st ford and definitely not a good impression. Anyone else having this issue?
Hi in January 2021I just bought a used 2019 Mustang with only 11,000 miles on it and I'am having the same problem every 4 days is goes to sleep!! has anyone figured out the problem yet?? I need help because the dealership thinks its normal and therefore they are not looing into fixing it.
 

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Hey Hotrod20004
On my 2020-HiPoEco- As far as I know/read the "sleep" mode is normal, it's when it goes to sleep and kills the battery then (that's a problem)!
I get a "Remote features disabled for battery optimization" message when mine sits for a long while, it's been 7 days so far and i've not received a message yet. (its way too icy/nasty to drive here).
That's per my "message center" and the last updated time stamp on "my vehicle" tab in the My Ford app was Feb 13. (today is 2.20.21)
I know I mentioned before about noticing my display screen sometimes will glow (and not show the Mustang) for a long time after locking-unlocking the doors if I forgott something, locked the car, unlocked the car, open the door and locked it again, (the screen sometimes acts like it gets stuck on shutdown, the Mustang icon goes away and the screen is just lit).
You'd think for it to go to "sleep" and something ends up killing the battery it's got to be something not part of the sleep mode (I guess),
or if the battery is going bad. My last car (2015 Mazda 3) I got 3 years out of the stock battery, was told they are not made to last as long as they used too. Batteries can fail and cause weirdness, I had one on my 2001 DOHC Taurus, worked fine, drove it to DMV, when in did my business came out to start the car and got dash lights only - no start, dang Dead battery just like that!
I remember I had my parents with me that day and it was hot as crap! I miss that car though, that 24vDOHC would freakin' Run!
Anyways, (this is just me asking) but see if you notice any issues with items glowing after you lock the car (easier to do at night) it's just a curiosity for me right now but I could see something like that possibly causing this problem.
Just an idea.
T
 

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Hey Hotrod20004
On my 2020-HiPoEco- As far as I know/read the "sleep" mode is normal, it's when it goes to sleep and kills the battery then (that's a problem)!
I get a "Remote features disabled for battery optimization" message when mine sits for a long while, it's been 7 days so far and i've not received a message yet. (its way too icy/nasty to drive here).
That's per my "message center" and the last updated time stamp on "my vehicle" tab in the My Ford app was Feb 13. (today is 2.20.21)
I know I mentioned before about noticing my display screen sometimes will glow (and not show the Mustang) for a long time after locking-unlocking the doors if I forgott something, locked the car, unlocked the car, open the door and locked it again, (the screen sometimes acts like it gets stuck on shutdown, the Mustang icon goes away and the screen is just lit).
You'd think for it to go to "sleep" and something ends up killing the battery it's got to be something not part of the sleep mode (I guess),
or if the battery is going bad. My last car (2015 Mazda 3) I got 3 years out of the stock battery, was told they are not made to last as long as they used too. Batteries can fail and cause weirdness, I had one on my 2001 DOHC Taurus, worked fine, drove it to DMV, when in did my business came out to start the car and got dash lights only - no start, dang Dead battery just like that!
I remember I had my parents with me that day and it was hot as crap! I miss that car though, that 24vDOHC would freakin' Run!
Anyways, (this is just me asking) but see if you notice any issues with items glowing after you lock the car (easier to do at night) it's just a curiosity for me right now but I could see something like that possibly causing this problem.
Just an idea.
T

I have the same 2020 hipo eco, under 2k on it purchased in November. I haven't been driving it much due to the bad weather, I have it set up to start once a week. The car goes into deep sleep and wont start due to dead battery. The battery is so dead you cant unlock the doors. I've charged the battery several times and it still dies. This is a problem, is there really that much running in the car that it kills the battery in under 5 days with out driving the car? I can put it on a trickle charger but it just seems ridiculous. Any way to turn everything off in the car so it can start on schedule?
 

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Why don't you just have it start more frequently during the week? Even then, it would have to run at least for a half hour to offset the charge used from starting, I just read were it would take four hours of the engine running to recharge a dead battery, so your mileage may vary.
So either unplug the battery, or put a trickle charger on it.
 
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