By the end of it, maybe 12 hours. I played the same game you did, watched it drop from 12.3 volts in the morning to ~7 volts and dead in the work parking lot over a 12 hour period.People with low batteries or no start can you report how long it sat from the last run cycle? TIA
Where do you find this screen? Or is this hooked up to the ob port? Just curious. Thanks!Data:
Parked at 6pm Friday after a 45 min drive.
Started at 11am Sunday.
Sat for 41 hours.
Nights: 50's
Days: 80's
Sunday Morning:
Key to run, DC/DC converter running:
17 amps recharging the 12 v
After 10 minutes of driving:
*** The display is not the parasitic draw. It's on a quick disconnect and I take it in the house EVERY night so it does not get stolen. ***
There are clamp on inductive current meters that can measure the battery drain without disconnecting the battery.The other theory I had, was that the act of disconnecting the battery stops the drain. So when they go to draw test they shut off whatever is drawing it down. You have to disconnect the battery to check the current draw. In testing I could disconnect my battery and read the same voltage 12.1 volts, 10 hours later. But leaving it connected for the same length of time the next day killed it.
Add on to the OBD port.Where do you find this screen? Or is this hooked up to the ob port? Just curious. Thanks!
Oh great! Thanks for the response! Do you have a link to the device so I can check it out?Add on to the OBD port.
I confirmed with the manufacturer the display is independently measuring the voltage from the power line it uses for the display. It is it's own volt meter, it is not getting "data" from the truck in this case.
Product is ScanGaugeIIIOh great! Thanks for the response! Do you have a link to the device so I can check it out?
Thanks again!
I looked those up, they seem perfect. It'd be a great way to confirm or deny that idea. Might pick one up.There are clamp on inductive current meters that can measure the battery drain without disconnecting the battery.
Hi Senior Master Ford Guy. Thanks for sharing this. I have a 2023 Maverick Hybrid with only ~2700mi that was experiencing rapid battery drain issues to the point where the vehicle would be totally dead within a few hours of parking it. My dealer found that this fuse was open when tested with a multimeter, so they are replacing it per this SSM. Can you please answer a couple questions to help me better understand?There has been some mention posted on here about 12 volt( low voltage system) battery drain and " deep sleep" messages from Ford Pass in Mavericks, today Ford released on the Professional Technician System accessible by Ford technicians this special service message, this may be something to have your dealer check if you are experiencing the problem of no start or dead/low battery. It does not specify that the mega fuse is being " blown" or popped, from my experience as a technician with some of the other models I have seen this mega fuse actually develop a crack ( typically caused by road shock/vibration)which can intermittently allow the loss of electrical charge to the battery, I've had them where they test good with an ohm/continuity meter laying on a bench but then with a little pressure applied to each end will test open. Ford does listen and research complaints/concerns with their vehicles and typically will give us( technicians) a heads up once they find a repetitive cause. Here is the service message, hope it helps some of you!
May 4 2023 New SSM 51598 2020-2023 Escape/Corsair, 2022-2023 Maverick – FHEV/PHEV - 12V Battery Voltage Low Or Discharged With DTC U3003:62 Stored In The DC/DC Some 2020-2023 Escape/Corsair equipped with 2.5L engine full hybrid electric vehicle (FHEV) and plug-in hybrid electric vehicle (PHEV) powertrain and 2022-2023 Maverick vehicles equipped with 2.5L engine FHEV powertrain may exhibit a condition where the 12V battery voltage is low or discharged with diagnostic trouble code (DTC) U3003:62 stored in the direct current/direct current converter control module (DC/DC). The vehicle may also exhibit DTC U3003:16 and/or U3000:04 stored in the DC/DC module. This may be due to an open in the 300 amp mega fuse located in the high current battery junction box (BJB). To correct this condition, refer to Workshop Manual (WSM), Section 414-05>Pinpoint Test H1 to verify the 300amp mega fuse condition, replace the fuse upon confirmation it is open. Test and recharge the 12v battery.
Very curious to see what he might knowHi Senior Master Ford Guy. Thanks for sharing this. I have a 2023 Maverick Hybrid with only ~2700mi that was experiencing rapid battery drain issues to the point where the vehicle would be totally dead within a few hours of parking it. My dealer found that this fuse was open when tested with a multimeter, so they are replacing it per this SSM. Can you please answer a couple questions to help me better understand?
1. Do you know how this fuse being open would cause the battery to drain? If anything, I would’ve expected an open fuse to prevent the battery from being discharged. My battery was draining so rapidly that there must’ve been a fairly large load applied to it even when the vehicle was off.
2. You mentioned you’ve seen some crack. Do you know for sure if that’s the failure mode seen in the Maverick? My technician didn’t specify how it failed, but I’m concerned about the possibility of it being a blown fuse. If it was a blown fuse instead of a manufacturing defect, I would think that would point to other electronics issues considering the current would’ve had to exceed 300A to blow the fuse.
Glad they found the problem and have hopefully fixed it permanently for you! The reason this fuse being "open" will cause your 12 volt battery to be drained is as follows( from the Maverick workshop manual) :Hi Senior Master Ford Guy. Thanks for sharing this. I have a 2023 Maverick Hybrid with only ~2700mi that was experiencing rapid battery drain issues to the point where the vehicle would be totally dead within a few hours of parking it. My dealer found that this fuse was open when tested with a multimeter, so they are replacing it per this SSM. Can you please answer a couple questions to help me better understand?
1. Do you know how this fuse being open would cause the battery to drain? If anything, I would’ve expected an open fuse to prevent the battery from being discharged. My battery was draining so rapidly that there must’ve been a fairly large load applied to it even when the vehicle was off.
2. You mentioned you’ve seen some crack. Do you know for sure if that’s the failure mode seen in the Maverick? My technician didn’t specify how it failed, but I’m concerned about the possibility of it being a blown fuse. If it was a blown fuse instead of a manufacturing defect, I would think that would point to other electronics issues considering the current would’ve had to exceed 300A to blow the fuse.
People with low batteries or no start can you report how long it sat from the last run cycle? TIA
Last summer I had 2 Lariat Hybrids sit in storage for 36 days and both start right up. One of the Lariats has had the "deep sleep mode" issue the past ten months. Currently both are in storage again for 43 days. Other than the deep sleep mode on the one, haven't had any of the other battery issues yet and just drive 'em. #1 delivered 2-16-22 has 5906 miles; #2 delivered 3-17-22 has 8249 miles.People with low batteries or no start can you report how long it sat from the last run cycle? TIA
Thank you for sharing this information with us. My hybrid Maverick is currently at the dealership awaiting a new DC to DC converter with no ETA on when the parts will be available. It's getting harder and harder to remain patient and optimistic about being a Ford Maverick owner. Luckly Florida's lemon laws protect consumers facing these sorts of prolonged trips to the dealership.There has been some mention posted on here about 12 volt( low voltage system) battery drain and " deep sleep" messages from Ford Pass in Mavericks, today Ford released on the Professional Technician System accessible by Ford technicians this special service message, this may be something to have your dealer check if you are experiencing the problem of no start or dead/low battery. It does not specify that the mega fuse is being " blown" or popped, from my experience as a technician with some of the other models I have seen this mega fuse actually develop a crack ( typically caused by road shock/vibration)which can intermittently allow the loss of electrical charge to the battery, I've had them where they test good with an ohm/continuity meter laying on a bench but then with a little pressure applied to each end will test open. Ford does listen and research complaints/concerns with their vehicles and typically will give us( technicians) a heads up once they find a repetitive cause. Here is the service message, hope it helps some of you!
May 4 2023 New SSM 51598 2020-2023 Escape/Corsair, 2022-2023 Maverick – FHEV/PHEV - 12V Battery Voltage Low Or Discharged With DTC U3003:62 Stored In The DC/DC Some 2020-2023 Escape/Corsair equipped with 2.5L engine full hybrid electric vehicle (FHEV) and plug-in hybrid electric vehicle (PHEV) powertrain and 2022-2023 Maverick vehicles equipped with 2.5L engine FHEV powertrain may exhibit a condition where the 12V battery voltage is low or discharged with diagnostic trouble code (DTC) U3003:62 stored in the direct current/direct current converter control module (DC/DC). The vehicle may also exhibit DTC U3003:16 and/or U3000:04 stored in the DC/DC module. This may be due to an open in the 300 amp mega fuse located in the high current battery junction box (BJB). To correct this condition, refer to Workshop Manual (WSM), Section 414-05>Pinpoint Test H1 to verify the 300amp mega fuse condition, replace the fuse upon confirmation it is open. Test and recharge the 12v battery.