[UPDATE 3/22/22] Dead Hybrid Maverick at 1 month old after getting "Deep Sleep Mode" messages. [Possibly fixed by software update.]

[skinnyboy]

UPDATE: For full informational update, see my 3/8/22 update on the original thread.

To sum it up, my dealership screwed me around and it sat for 31 days, only to find out they weren't able to fix the issue despite a Ford Engineer coming out. They released the car to me today unfixed, and admitted that they couldn't find the issue. My service advisor lied to me and said they DID fix it by "resetting and adjusting various modules".

Really sorry that the issue wasn't resolved. Difficult to enjoy a vehicle that has a history of stranding you (especially a new one). Fingers crossed it never happens again! Please keep us posted.

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[Flomounier1]

A little update!

Well it's been about 5 days now and the truck hasn't died yet and I haven't got any more deep sleep mode notifications since the day I got the truck back from the dealer. The truck has been driving fine so far. About a week before the dealership gave it back to me, my FordPass app notified me and said the software has been updated to the most recent software version. I'm hoping that's what fixed it and the battery level was just low when I got it back from the dealer because they forgot to charge up the battery up after being dead. (Which could explain the 12.1v battery reading and deep sleep mode notification.)

So yes, technically my dealer never found a "Fix" for this car, but at least I believe them now when they said that the Ford engineer couldn't replicate the issue. (Possibly because the software update fixed the problem.) Will keep updated! It feels great not having a dead truck anymore.

 

[Veer]

what software update? ECU? How and where do you check the sw version? Thanks.

 

[Flomounier1]

what software update? ECU? How and where do you check the sw version? Thanks.

Yes, ECU software. I'm not sure exactly how to check what version it is but only the dealer can update it. I believe you need ForScan to check that. The radio software is supposed to be self-updatable via wifi.

 

[jsus]

A little update!

Well it's been about 5 days now and the truck hasn't died yet and I haven't got any more deep sleep mode notifications since the day I got the truck back from the dealer. The truck has been driving fine so far. About a week before the dealership gave it back to me, my FordPass app notified me and said the software has been updated to the most recent software version. I'm hoping that's what fixed it and the battery level was just low when I got it back from the dealer because they forgot to charge up the battery up after being dead. (Which could explain the 12.1v battery reading and deep sleep mode notification.)

So yes, technically my dealer never found a "Fix" for this car, but at least I believe them now when they said that the Ford engineer couldn't replicate the issue. (Possibly because the software update fixed the problem.) Will keep updated! It feels great not having a dead truck anymore.

Sounds like the fix was the software update. Something was being kept powered on by buggy software that the update fixed. Hopefully it stays that way and you're able to enjoy your new Maverick!

 

[HITruck]

So after three weeks of waiting for the harness and two full days of work at the shop we're good to pick up the truck. Let's hope we can drive more than 600 miles before the next thing breaks.

 

[DiveBombDom]

So after three weeks of waiting for the harness and two full days of work at the shop we're good to pick up the truck. Let's hope we can drive more than 600 miles before the next thing breaks.

I just got the call my harness is in too. I'm scheduled to drop mine off on Monday. They said they have a loaner ready for me. (They were able to do a temporary repair on mine until now, so I've been driving it. 1200 miles already on the temp repair)

 

[lumonix]

I’ll add my hybrid xlt to the list of cars with this problem .
Although mine hasn’t died completely yet, if I don’t drive it for about 24 hours I get the “Deep sleep” message. The voltage after the last message was 12.52. So far I have had 4 of these messages in the last two weeks.

 

[Nighowl2000]

I was getting those deep sleep messages back in january. ended up getting one of those solar trickle chargers and no issues since (other then I dont have auto start stop... meh)

this is the charger I got (wired directly to the battery):

www.amazon.ca/Waterproof-Maintainer-Motorcycle-PowerSports-Snowmobile/dp/B07JLWFPX6/ref=sr_1_35?keywords=7w+solar+charger&qid=1648689267&sr=8-35

..edit wow they really went up in price!!! got mine back in January for half the cost....

 

[DiveBombDom]

I had my truck in to the dealer this week for that harness swap out. They had it for about a day and a half. No issues since they finished it up. Also, this dealer loves giving me loaner vehicles worth a lot more than the Mavvy. This is what they have me for the day. (2022 F-150 STX)

 

[lumonix]

@Nighowl2000 thanks for the suggestion. Vehicle is currently parked in dark garage so don’t get much sun.
@DiveBombDom what is a “harness” exactly? Part of the battery?

 

[DiveBombDom]

@Nighowl2000 thanks for the suggestion. Vehicle is currently parked in dark garage so don’t get much sun.
@DiveBombDom what is a “harness” exactly? Part of the battery?

It was a faulty wiring harness on the 12v side of the system. Here is a sceencap of my original post explaining a little more detail.

 

[KeinoDoggy]

It was a faulty wiring harness on the 12v side of the system. Here is a sceencap of my original post explaining a little more detail.

So this is under the hood? If so I will take a look at my own.

 

[NNJGUY]

First Update: Fixed for now at least, took it to the dealer, they performed a load test on the battery, it failed (any battery with only 2.15 volts will fail a load test), so they replaced the battery. They didn't perform a parasitic draw test like I hoped they would but if this happens again, I will make sure they do next time.

Another Update 2/4/22: After the dealer replaced the battery a couple days ago, I just got another FordPass Deep Sleep Mode notification. I checked the battery voltage with my multimeter while the car was off and with doors closed, and it read 11.6 volts. So it does look like the battery is draining on it's own for sure and the first battery wasn't just a "bad battery" as new batteries should read 12.6 volts. I have a Mercedes with a 4 year old battery that still reads 12.3 volts with the car off. I'll give it another day or 2, see if it completely dies out again, and back to the dealer it goes...

ANOTHER Update 2/6/22: Went to start it this morning, truck would not start, instrument gauge was on without the key in the ignition and flickering, key fob unresponsive, relays were going crazy and there was a grinding noise coming from the brake pedal area. Battery voltage is 10.1 volts.

UPDATE 2/7/22: Dropped it off at the dealer again this morning, was able to jump start it. When the car started, the check engine light was on and a red triangle light illuminated on the dash. 5 codes were stored in the ECU.

UPDATE 2/12/22: It has been at the dealer now for 6 days with no updates or ideas what the problem is. My service advisor reserved a Ford Ecosport Loaner for me which I picked up today.

Update 2/22/22: It has been over 2 weeks now that the Mav has been at the dealer. My service advisor informed me yesterday that no progress has been made on finding the cause of the issue.

Update 2/24/22: It is still at the dealer but my service advisor just called and said a Ford engineer will be coming to the dealership today to inspect my car.

UPDATE 3/8/22: Picked up the Maverick from the dealer today after 31 days sitting there. Ford Customer relations called me 3 days ago saying they think the dealership fixed the problem and that it will be at the dealer for the next few days for observation. Last Night (3/7/22), my service advisor called me to inform me that the issue was fixed. However, my Maverick was not connected to the FordPass network for the last couple days indicating that the battery was either disconnected or dead. When I picked it up today, it ran fine, the check engine light was off, and no flickering lights. I drove home (about a 3 mile drive), parked and went inside to have lunch. About an hour later, low and behold I got another "Remote Features Disabled/Deep Sleep Mode" FordPass app notification. My heart dropped and I went outside and put my multimeter directly to the battery, sure enough, 12.1 Volts indicating a drain/low charge level once again. (A fully charged battery should be 12.6 volts.)

UPDATE 3/13/22: Have had the truck back in my possession now for 5 days and it hasn't died yet. I only got 1 deep sleep mode notification on the day I got the truck back. About a week before that, I noticed a notification on my FordPass app that said the software has been updated to the most recent version. I believe this may have been the fix for my issue. Normally, my Mav would have died by now. As far as the deep sleep mode notification and 12.1v battery reading the day I got it back (3/8/22), I think that may have been because the dealer didn't fully recharge my battery before returning the car to me. Will keep driving the truck and update. Otherwise, the truck is driving great so far.

UPDATE 3/22/22: I believe the issue is fully resolved. I haven’t had any deep sleep mode notifications nor has the battery voltage dropped. Truck drives great!


Will Keep Updated...

ORIGINAL POST:

I've been getting FordPass app notifications saying my vehicle has entered "Deep Sleep Mode" because the battery charge level is low. In addition to this, the door open/ignition chime started playing out of a small speaker within the steering column instead of the car speakers. Keep in mind, the vehicle was driven every day and nothing electrical was left on or plugged in while parked. I also noticed the ICE (Internal Combustion Engine) was kicking on sooner and more frequently over the last 2 weeks causing my MPG to drop as well. Probably trying to recharge the 12v battery.

Man, you are a very patient guy. I’d have been throwing crap around that service dept. like a crazy person. Good for you. Glad it’s done

 

[DiveBombDom]

So this is under the hood? If so I will take a look at my own.

I believe so. I don't know the exact location though.

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