Deep Sleep Voltage?

[Jktrahan]

Does anyone know at what voltage level 'Deep Sleep' kicks in? I have read a ton of posts but have not been able to identify at what actual voltage initiates the 'Deep Sleep' cycle. I currently utilize a hardwire kit for a dashcam with parking mode that cuts off at 11.6 v. My current hardwire kit at 11.6v cutoff does initiate the 'Deep Sleep' cycle and I drive two hours per day.

I have found another hardwire kit that has four different options for voltage cutoff: 11.8v, 12.0v, 12.2v, 12.4v. (https://a.co/d/3eorKkL)

I am very interested to know if anyone has tried a hardwire kit that cuts off when the voltage hits 12.4v, and if that voltage also initiates the 'Deep Sleep' cycle?

I am aware that there are kits that will cut off after a specific amount of time has elapsed, but I am not interested in that route unless there is no other option.

Thank You!

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[Packer Bill]

I read somewhere it was 11.9 volts. Since the battery starts to degrade at 50% discharge, it really should be 12.2 volts.

 

[Bigbill27]

According to Ford's website, deep sleep is engaged after the vehicle has been sitting more than 14 days or if the voltage drops below 9.5 volts.

https://www.ford.com/support/how-to...y-does-my-ford-vehicle-enter-deep-sleep-mode/

If you're going into deep sleep at a higher voltage, the battery management system is probably not reset properly.

 

[Jktrahan]

According to Ford's website, deep sleep is engaged after the vehicle has been sitting more than 14 days or if the voltage drops below 9.5 volts.

https://www.ford.com/support/how-to...y-does-my-ford-vehicle-enter-deep-sleep-mode/

If you're going into deep sleep at a higher voltage, the battery management system is probably not reset properly.

I can report that Ford's website is definitely wrong in that aspect. I had my 2024 hybrid in the shop twice for the deep sleep issue and both times they reported that the battery was still reading 12v charge but going into deep sleep.

 

[BradnChristine]

I haven't seen this before:

 

[BradnChristine]

I haven't seen this before:

On a positive note, when they did the turn signal software update for me on 1/29/24, they also found a BMS update to do.

Since that time, I drove the truck one time, for about 130 miles, on 2/2/24 and then parked it. It is sitting locked in the 50 degree garage and so far, NO Deep Sleep notice in the week it has been sitting. Mine is a 2023, built 1/12/23.

 

[Jktrahan]

I forgot to mention that the BMS module was also replaced and did not resolve anything. As soon as I disabled parking mode on the dashcam, all issues stopped.

 

[Raymundo76]

I read somewhere it was 11.9 volts. Since the battery starts to degrade at 50% discharge, it really should be 12.2 volts.

Can't be, I measure 11.9v all the time and have not (as yet) a deep sleep.

 

[Packer Bill]

Can't be, I measure 11.9v all the time and have not (as yet) a deep sleep.

At 11.97 voltage, you are 40% discharge level. From what I have read, anything lower than 50% discharge level will shorten the life of your battery. I would recommend using a battery tender when it hits 50% discharge level. I do this on my EB Maverick.

 

[Raymundo76]

At 11.97 voltage, you are 40% discharge level. From what I have read, anything lower than 50% discharge level will shorten the life of your battery. I would recommend using a battery tender when it hits 50% discharge level. I do this on my EB Maverick.

I have in the past; but a new Truck should not be having this problem. I can't get the dealer to do anything, so I thought if there was a deep sleep they might. Failing that there is an Interstate battery in my future. The Eco's have a different battery; so most do not have this problem. Since the hybrid starts in electric mode it does not need as much juice. I think that the BMS for hybrids starves the Lead-acid battery. This is the only real problem I have had with my 24 hybrid. Any thoughts?

 

[CurtisB]

I have in the past; but a new Truck should not be having this problem. I can't get the dealer to do anything, so I thought if there was a deep sleep they might. Failing that there is an Interstate battery in my future. The Eco's have a different battery; so most do not have this problem. Since the hybrid starts in electric mode it does not need as much juice. I think that the BMS for hybrids starves the Lead-acid battery. This is the only real problem I have had with my 24 hybrid. Any thoughts?

I would totally agree with you sir. After 4 weeks of a new lead acid batter by Diehard, I got my first "sleep message" today. I really believe its both the type of battery and the software that is causing the issue. This also would explain why it's not affecting some people. I am not going to the dealer again with this. They saw my after market amplifier and said I caused the problem. After seeing BradnChristine posts about Ford working on the issue, I will continue to do an overnight charge (I hooked up one of those trickle charger adapters) monthly and wait for Ford to wake up and smell the coffee. This is a manufacturer issue, not ours.

 

[MetalsGeek]

I had my first deep sleep event last week after the truck had been sitting unlocked for 5 days. Battery voltage at the lighter socket when I switched ACCY mode on was 11.8V. I know the manual states 9.5V, but IMHO I like the 11.8 a LOT better. A 12V lead-acid battery at 9.5V is so dead it's useless and sulfating. I have the lingering impression that locking the truck will reduce the parasitic loads that drain it so quickly, but no hard data to support that. I miss the olden days of real switches when "off" really was off, and the only parasitic load was the CMOS memory in the PCU.

 

[Raymundo76]

I had my first deep sleep event last week after the truck had been sitting unlocked for 5 days. Battery voltage at the lighter socket when I switched ACCY mode on was 11.8V. I know the manual states 9.5V, but IMHO I like the 11.8 a LOT better. A 12V lead-acid battery at 9.5V is so dead it's useless and sulfating. I have the lingering impression that locking the truck will reduce the parasitic loads that drain it so quickly, but no hard data to support that. I miss the olden days of real switches when "off" really was off, and the only parasitic load was the CMOS memory in the PCU.

I always lock. Not sure but I think it saves a little juice. Good luck.

 

[Bigbill27]

I can report that Ford's website is definitely wrong in that aspect. I had my 2024 hybrid in the shop twice for the deep sleep issue and both times they reported that the battery was still reading 12v charge but going into deep sleep.

I understand, but if the battery management system is reading it as 9.5, it will deep sleep. Mine was doing the same thing.

 

[Raymundo76]

I understand, but if the battery management system is reading it as 9.5, it will deep sleep. Mine was doing the same thing.

So the BMS sucks ?

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