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

[uga]

Several sources, Ford, parts manager, service managers, all say no.

Another Canadian member mentioned a TSB, I ask him to get a copy, but nothing yet.
Hard to believe no TSB in the USA, but one in Canada.

BTW, what is your manufacture date on the sticker drivers side door jam? Have heard the same song from members all the way thru 08/22

Sponsored

 

[KeinoDoggy]

Several sources, Ford, parts manager, service managers, all say no.

Another Canadian member mentioned a TSB, I ask him to get a copy, but nothing yet.
Hard to believe no TSB in the USA, but one in Canada.

Makes it sound more and more a lack of responsibility by Ford. Twenty one pages just on this thread so that tells me something.

 

[uga]

Its simple, very few places make the harness, Ukraine used to be a huge supplier, Ford is probably hoping for the best but odds are virtually all hybrids will eventually have this issue even if the harness is replaced.

I deleted previous posts since all the experts were claiming that this Ford dealer did not use the proper connector. To be honest, I could care less as long as the problem is solved for the time being. Its all documented so no worries with me.

 

[KeinoDoggy]

Several sources, Ford, parts manager, service managers, all say no.

Another Canadian member mentioned a TSB, I ask him to get a copy, but nothing yet.
Hard to believe no TSB in the USA, but one in Canada.

BTW, what is your manufacture date on the sticker drivers side door jam? Have heard the same song from members all the way thru 08/22

9/22 early hybrid, sat in Mexico for months before being delivered in January.

 

[uga]

you prob mean 9/21

That is the same date as one of ours, have seen all the way to 8/22 same issues.

Stayed in Mexico because of EPA certification delays

BTW, as mentioned, 9/21 and ours was delivered 1/22

 

[KeinoDoggy]

you prob mean 9/21

That is the same date as one of ours, have seen all the way to 8/22 same issues.

Stayed in Mexico because of EPA certification delays

yep.

 

[DonaldD]

The following information on this thread is a chronological order of events I went though when my Hybrid Maverick was experiencing these issues. To my knowledge, there are two known causes for this. 1) Bad soldering connection somewhere in the wiring harness that must either be fixed by a "resolder" wherever the bad connection is, or replacement of the wiring harness. It is unknown if the replacement wiring harness has been updated and fixed. Or 2) Poor vehicle software causing modules to remain awake while the car is off and thus drain the battery over a period of time. My issue was #2 according to my service paperwork. A new software update fixed the issue for my Maverick according to my dealership.

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!

UPDATE 4/9/22: I guess I can consider this issue fully resolved. Haven't had any deep sleep mode notifications or any issues so far. I believe pre-software update, there was a glitch causing some type of module in the vehicle to remain awake or active causing a battery drain. That, or the dealer found a bad connection somewhere and fixed it without telling me or writing that on the service paperwork. Perhaps they knew about it and didn't want to replace the wiring harness so they just did a DIY fix wherever the bad connection was. Just speculation though.


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.

I will take delivery of my Lariat hybrid at the end of September after an 11 month wait. My wife and I are going on a 5-6 week cross country trip as soon as we get it, taking advantage of good fall weather. I am a little worried. If I have these electrical problems far from home, I don’t want to get stuck for a prolonged time. My build started August 29. What are the chances the problem has been fixed by this time? Any suggestions?

 

[uga]

Yes, pickup one of these and enjoy your trip:

https://no.co/

 

[MAVRICK]

I will take delivery of my Lariat hybrid at the end of September after an 11 month wait. My wife and I are going on a 5-6 week cross country trip as soon as we get it, taking advantage of good fall weather. I am a little worried. If I have these electrical problems far from home, I don’t want to get stuck for a prolonged time. My build started August 29. What are the chances the problem has been fixed by this time? Any suggestions?

For peace of mind on your trip, equip yourself with something like this:

"NOCO Boost X GBX45 1250A 12V UltraSafe Portable Lithium Jump Starter, Car Battery Booster Pack, USB-C Powerbank Charger, and Jumper Cables for up to 6.5-Liter Gas and 4.0-Liter Diesel Engines" [It is what I use but any sufficiently powerful battery booster should do].

So far, it appears that most if not all reported "Dead Hybrid Maverick" cases have happened after turning the vehicle off at a dead stop.

So far, I have seen no reported cases of "Dead Hybrid Mavericks" experiencing sudden death [lack of battery power] while in motion.

Here is some more information from a previous post that may explain why it happens after a dead stop condition and not while in motion:

The 12v AGM (Lead Acid)/ 470 CCA Battery powers a relay that activates/ establishes a connection for the High Voltage Battery [HVB] (a.k.a. "traction battery") to power a traction motor which engages the eCVT to get the vehicle rolling under electric power and then switch the ICE on and off as needed.

At startup - If the 12v battery is dead or detected/ sensed as dead by the Electronic Control Module (ECM) - which monitors the Battery System Management (BSM) signals - then the ECM shuts down all systems. Vehicle defaults to "Park" and vehicle won't move until the 12v battery is energized (or bypassed) by using external means (such as a "jump/ booster pack") to provide enough juice to activate/ close the relay enabling power to flow from the HVB to the traction motor which gets the vehicle rolling under electric power and then switches to ICE as needed in response to driving dynamics.

For everything to work, the HVB has to be healthy and in a good state of charge. So far, there has been no reports of unhealthy HVBs or irregularities in the HBVs state of charge.

Faults seem to point to the electric power distribution cable and/or its connection points following along the path between the 12v battery, the contact relay, and the DC-to-DC regulator used to charge the 12v battery back up from the HVB.

 

[Mach 1]

I just did a detailed write up on this in the issues threads, its got some good info in the thread if you are in central Texas look me up.

 

[KeinoDoggy]

I just did a detailed write up on this in the issues threads, its got some good info in the thread if you are in central Texas look me up.

https://www.mavericktruckclub.com/forum/threads/hybrid-battery-cable-lug-inspect.20063/

 

[KeinoDoggy]

Okay guys, while watching the games today, I got the dreaded "Deep Sleep Mode" message on my Ford app. Went out and even though no dome lights or any power showing to the dash, I started the Maverick with the key. Remote everything on the app was disabled. My Maverick only has 2800 miles on it. Planning on calling the dealer in the morning so just want to make sure I have all the info from others such as print outs from their dealers as to how they diagnosed this. Assuming the problem is my hybrid harness like the others. I drove the vehicle 200 miles yesterday so there should be no reason for the battery to be discharged. I know there is no recall but is there an actual TSB for this anywhere? Also should the Maverick not start in the morning, I have a portable jump box to use. I assume I treat this as a normal jump and connect to the positive jump point under the red cap under the hood and anywhere I can ground. Thanks for any guidance and I still don't get why FORD doesn't stand up and issue a recall. I will keep their lack of doing so in mind when I shop for my next vehicle. How about it @Ford Motor Company

UPDATE: I took it for a ride and then after a few miles everything was back and working. i decided to test voltage at the battery and at the fuse box positive jumper under the hood. Both registered 12.74 volts. So I am thinking that someone turned on the outside rear window cargo light, left it on, and ran the battery down. Is there no indicator in the cabin when this light is on? I can't seem to find it in the manual.

 

[clavicus]

UPDATE: I took it for a ride and then after a few miles everything was back and working. i decided to test voltage at the battery and at the fuse box positive jumper under the hood. Both registered 12.74 volts. So I am thinking that someone turned on the outside rear window cargo light, left it on, and ran the battery down. Is there no indicator in the cabin when this light is on? I can't seem to find it in the manual.

I'm not sure if this is the case with your situation, but others experienced the issue intermittently, where the 12v harness endpoint in the engine bay could be jiggled, and the measured resistance changed, meaning it's "loose" but not yet completely disconnected. Maybe you caught it on a good day, or maybe that's not what's happening at all. Just a thought.

 

[Flomounier1]

To give everyone a little update, I sold my Mav a couple months ago to Carvana. I just couldn't sleep at night not knowing when the next issue is going to occur. I had hopes and dreams during the 6 months I waited for the Truck of doing a cross country road trip in it but didn't want to chance it. My Maverick was at the dealership more than it was in my driveway during the 5 months I owned it. I've never owned a more problematic car fresh off the assembly line in my entire life.

I have no further information as to what this issue may be. It seems like a lot of members on here are tinkering around and figuring things out (better than Ford can). But you can bet if one of the connections on the wire harness is bad, there are more. Ford went from being knee deep in sh*t at the time I originally wrote this thread to neck deep as far as all their recalls.

Nobody knows the extend of quality control at the Hermosillo production plant but they sure don't have a good reputation.

 

[uga]

https://no.co/

You pushed the panic button to soon! Most issues are easy to fix, dealers are backed up, but good luck anyway......................

Sponsored