She died- UPDATE

BroncoHawaii

Outer Banks
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Hi.
UPDATE: Disconnecting the positive from the battery worked!! She's back home and appears to be ok. I'm definitely keeping wrenches in the car until I can go waste a bunch of time at the dealership. UGH
Question: I read in the manual that
"Note:The engine management system has
a power hold function and remains powered
for a period of time after you switch the
ignition off. This is to allow diagnostic and
adaptive tables to be stored"
So that has to be the "noise" that I hear that lasts about 5 to 10 minutes when I shut it off.


Hi Bronco people.
I have an OB and got almost home. Stopped to unlock my gate and she would not start. Start button flashing. Lights and dash would not turn off. No screen or error messages. Some kind of humming (no better explanation). Got it to start once using my other FOB but she died when I put it in drive. I have disconnected the battery so it doesn't go dead.
I'm hoping maybe in a few hours I'll try to see if it "rebooted" itself. If not, she gets towed tomorrow. Total bummer!!





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Central Jersey

Big Bend
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Hi Bronco people.
I have an OB and got almost home. Stopped to unlock my gate and she would not start. Start button flashing. Lights and dash would not turn off. No screen or error messages. Some kind of humming (no better explanation). Got it to start once using my other FOB but she died when I put it in drive. I have disconnected the battery so it doesn't go dead.
I'm hoping maybe in a few hours I'll try to see if it "rebooted" itself. If not, she gets towed tomorrow. Total bummer!!
Your the second person this weekend with the same issue. Good luck
 

Excape

Outer Banks
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Reg
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Yeah that's not sounding very good. And being in an island...that magnifies your issues. I hope you find quick resolution
A month a ago or so, there were reports that rental cars were in such short supply and expensive in Hawaii that tourist were renting U-Hauls for their vacation.

Best wishes to OP for quick resolution!
 
OP
OP
BroncoHawaii

BroncoHawaii

Outer Banks
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A month a ago or so, there were reports that rental cars were in such short supply and expensive in Hawaii that tourist were renting U-Hauls for their vacation.

Best wishes to OP for quick resolution!
Thanks! all good
It's true- and the tourists are renting Uhauls...not funny but really scary on our small narrow roads!
 

Bronclahoma

Badlands
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Oklahoma
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2021 Bronco Sport
Hi.
UPDATE: Disconnecting the positive from the battery worked!! She's back home and appears to be ok. I'm definitely keeping wrenches in the car until I can go waste a bunch of time at the dealership. UGH
Question: I read in the manual that
"Note:The engine management system has
a power hold function and remains powered
for a period of time after you switch the
ignition off. This is to allow diagnostic and
adaptive tables to be stored"
So that has to be the "noise" that I hear that lasts about 5 to 10 minutes when I shut it off.


Hi Bronco people.
I have an OB and got almost home. Stopped to unlock my gate and she would not start. Start button flashing. Lights and dash would not turn off. No screen or error messages. Some kind of humming (no better explanation). Got it to start once using my other FOB but she died when I put it in drive. I have disconnected the battery so it doesn't go dead.
I'm hoping maybe in a few hours I'll try to see if it "rebooted" itself. If not, she gets towed tomorrow. Total bummer!!
Thanks for posting your experience. Let us know what the problem was. Getting ready for a trip out West and will be in remote places. Stories like yours are concerning.
 

CaptainCanada

Outer Banks
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Canada
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2021 Bronco Sport
Hi.
UPDATE: Disconnecting the positive from the battery worked!! She's back home and appears to be ok. I'm definitely keeping wrenches in the car until I can go waste a bunch of time at the dealership. UGH
Question: I read in the manual that
"Note:The engine management system has
a power hold function and remains powered
for a period of time after you switch the
ignition off. This is to allow diagnostic and
adaptive tables to be stored"
So that has to be the "noise" that I hear that lasts about 5 to 10 minutes when I shut it off.


Hi Bronco people.
I have an OB and got almost home. Stopped to unlock my gate and she would not start. Start button flashing. Lights and dash would not turn off. No screen or error messages. Some kind of humming (no better explanation). Got it to start once using my other FOB but she died when I put it in drive. I have disconnected the battery so it doesn't go dead.
I'm hoping maybe in a few hours I'll try to see if it "rebooted" itself. If not, she gets towed tomorrow. Total bummer!!
I wonder if my 2015 escape has a similar power hold function. If I turn it off and sit in it for a bit after it makes this almost like photocopier noise and always has since I've owned it 6 years. Everything I could find at the time seemed to indicate it was just a diagnostic check.
 

13MikeH

Badlands
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Mitten
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FORD BRONCO SPORT BADLANDS AREA 51
Hi.
UPDATE: Disconnecting the positive from the battery worked!! She's back home and appears to be ok. I'm definitely keeping wrenches in the car until I can go waste a bunch of time at the dealership. UGH
Question: I read in the manual that
"Note:The engine management system has
a power hold function and remains powered
for a period of time after you switch the
ignition off. This is to allow diagnostic and
adaptive tables to be stored"
So that has to be the "noise" that I hear that lasts about 5 to 10 minutes when I shut it off....
Glad it worked out. I had a battery in the trunk of my challenger. I tried the same trick...problem is once the trunk closed it was locked shut. Thank goodness I could drop the rear seats and crawl into the trunk and pop it with the safety strap. Didn't think fast enough as I started to lower the trunk lid...no power, no open...Keep us posted maybe that's all the bronco needed.
 

JerryC

Badlands
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1988 BII , 2021 BL on order 3-19-21
I wonder if my 2015 escape has a similar power hold function. If I turn it off and sit in it for a bit after it makes this almost like photocopier noise and always has since I've owned it 6 years. Everything I could find at the time seemed to indicate it was just a diagnostic check.
Some vehicles cycle the vent doors to a default position and you'll hear the motors that are moving the blend doors.
 

fourthgear

Outer Banks
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I hope it stored any info of faults when Battery disconnected for a length of time . I know the various ECU's & SRS still have functional power for 15-20 min. , be nice if it stored any codes , some may not show up on any dash or Screen , even though there are some .
 

Mudpie

First Edition
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You have to report these problems to the NHTSA in order for an investigation or recall to occur. Very rarely will the manufacturer initiate a recall unless its serious. Its like the fox guarding the hen house. www.nhtsa.gov
 

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