Powertrain Malfunction/Reduced Power and High-Voltage Battery Warning

[HuntingPudel]

Thank you for confirming! I was thinking same thing and decided to drop off and leave in case they can squeeze me in when free. At least this time SVS stayed on screen for Service when I dropped off.

Good that the error stayed so they can see it. Mine progressed to an SSN while I was sitting in line waiting for the service advisor to finish checking in my car. ??

Did your service advisor tell you that they thought their tech might have some down time between appointments? Mine did and felt that they’d get my car out of their shop sooner than an appointment became available (so I went that route). In either event, make sure that you at least have an appointment so that your car doesn’t keep getting pushed back beyond your originally-expected appointment date. ??

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[Lauren]

Good that the error stayed so they can see it. Mine progressed to an SSN while I was sitting in line waiting for the service advisor to finish checking in my car. ??

Did your service advisor tell you that they thought their tech might have some down time between appointments? Mine did and felt that they’d get my car out of their shop sooner than an appointment became available (so I went that route). In either event, make sure that you at least have an appointment so that your car doesn’t keep getting pushed back beyond your originally-expected appointment date. ??

Good point! Will do. ?

 

[Ford Motor Company]

Well, it came back. May 2023 was last time. During a normal pass on a two lane road, the ‘service vehicle soon popped up, along with red vehicle and wrench. This morning my Ford app is displaying 'high voltage battery warning' and 'power train malfunction/reduced power'. There was a software update on October 1st, but the powertrain and battery errors happened later October 3. I called my dealership, but unfortunately they are backed up and their electric vehicle mechanic has certain days he is there. Wondering if I should try and drive to dealership and leave knowing I may be without a vehicle for a couple weeks. Darn…

Hi there, Lauren. This powertrain concern doesn’t sound like something we want you to experience with your Mach E. Could you please send us a PM with your VIN and the name and location of your Ford dealer? To send a private message, just click on our username and select "Start Conversation". I'd be happy to look into how I can assist you on my end.

 

[Lauren]

Update...It ended up being the HVBJB. I dropped off my car to the dealership on 10/04/23 due to the powertrain and high voltage battery errors. Two days later they had a loaner F-150 to use. Although having a large ICE vehicle was not my first choice, it was brand new and very comfortable. I was happy and thankful to have “wheels”. The error codes could not be pulled right away because my car was not communicating with their equipment. I was not told what eventually fixed the communication issue, but I had a case # with Ford and I know there was communication between Ford and my dealership. I have to say that after reading about the very long wait times for service, I was a little worried I might not see my vehicle for a long time. I am happy to say that my car was ready in 8 days!

The notes in the description from the service department were: “Replaced the high voltage battery junction box. Reprogrammed the BECM and PCM. Perform software updates to secondary on-board diagnostic control module, battery energy control module, and the secondary on-board diagnostic control module b. Cleared codes and retested.”

I drive very low miles due to me having a home office. I have owned my 2021 MME GTPE since September of 2021. The first episode of these errors occurred in May of this year, 12K miles, which a software update cleared and the dealership couldn’t diagnose without the error codes. It came back to haunt me this month. I rarely fast charge. I use my home Charge Point charger that is plugged into a 240 outlet (wired by my electrician). This second occurrence with the powertrain and high voltage battery errors happened at 16K miles.

I believe my issue was triggered by occasional fast acceleration (wide open pedal events). I bought the MME GTPE because I enjoy having the power and acceleration. I also know that since my car was one of the first GT’s, and this is new technology, I would be “testing” this new vehicle. With all that said, I absolutely LOVE my car and am very happy to have it back.

 

[QED411]

I am having this exact same issue - but oddly after 26k of driving. It happened after the most recent service and is now happening almost daily. Really bad as no local town truck operator will tow the Mach-E without dollies. The dealership is backed up for 2 weeks so I think I'll get a 12V external charger to carry around whenever this problem happens. Sucks!

So this problem is back again (it never really got resolved) - today my Mach-E with my wife drive my two boys - stopped suddenly in the middle of the Saw Mill River Parkway - very dangerous intersection. Fortunately she was able to roll it to a side street. What follows is the description of how NOT to operate a support call

The car was at 70% main battery - but suddenly the computer started displaying repeated error message and saying the rear doors were open etc. Then the door locks started thunking

a) 10:20am - first call to road side assistance. Filling in the VIN, email, Tel No etc. Said they will send someone out
b) Second call 10:30 - again fill out the same details - plus location. I don't know how Ford App doesn't communicate all this to the operator - it's all there
c) Some Tow Company picked up the ticket and said 60-90 minute wait. While I waited in the rain
d) 12:20 - Ford App shows now Tow Company delayed by 40 minutes
e) At this point I am sitting in the car - my wife has taken the kids home.
f) Tow Company cancels
g) Ford rep ask for all the initial information again to order another tow company
h) 2:30pm - Another Tow Company says will arrive in 30 minutes
i) 3pm Tow Company arrives and tows the car
j) Ford Rept tells me I have to phone my local dealer - who have NEVER been able to resolve this problem because only I can tell them to receive the car
k) Finally get to the dealer who tells me they are closed for the day and they don't provide loaner cars because insurance is too high...now at 7:42pm I am trying to find a rental car which falls below the $45 per day limit set by Ford. I guess I will get reimbursed but I have wasted a whole day and will waste more time in the coming weeks.

The whole support system of road side assistance asking repeatedly for the same information is ridiculous. Also the Road side Assistance doesn't speak with the dealership on your behalf. Then the main support desk I have to contact because the Dealer apparantly doesn't know what is wrong with the car - points me back to another dealer in Nyack. Who also doesn't have a loaner and they don't have an appointment until end of March.

Who do I speak with to resolve this issue of the 12v battery continously draining and setting off this domino effect of disasters. It's been 2 years since I posted the initial and my car has still not been fixed.

I love the car but I don't know whether the Ford support system is designed for the working person who has other things to do or it seems to have been designed by Kafka - its a circle of hell - trying to get a clear answer to what is wrong with this car.

 

[QED411]

So this problem is back again (it never really got resolved) - today my Mach-E with my wife drive my two boys - stopped suddenly in the middle of the Saw Mill River Parkway - very dangerous intersection. Fortunately she was able to roll it to a side street. What follows is the description of how NOT to operate a support call

The car was at 70% main battery - but suddenly the computer started displaying repeated error message and saying the rear doors were open etc. Then the door locks started thunking

a) 10:20am - first call to road side assistance. Filling in the VIN, email, Tel No etc. Said they will send someone out
b) Second call 10:30 - again fill out the same details - plus location. I don't know how Ford App doesn't communicate all this to the operator - it's all there
c) Some Tow Company picked up the ticket and said 60-90 minute wait. While I waited in the rain
d) 12:20 - Ford App shows now Tow Company delayed by 40 minutes
e) At this point I am sitting in the car - my wife has taken the kids home.
f) Tow Company cancels
g) Ford rep ask for all the initial information again to order another tow company
h) 2:30pm - Another Tow Company says will arrive in 30 minutes
i) 3pm Tow Company arrives and tows the car
j) Ford Rept tells me I have to phone my local dealer - who have NEVER been able to resolve this problem because only I can tell them to receive the car
k) Finally get to the dealer who tells me they are closed for the day and they don't provide loaner cars because insurance is too high...now at 7:42pm I am trying to find a rental car which falls below the $45 per day limit set by Ford. I guess I will get reimbursed but I have wasted a whole day and will waste more time in the coming weeks.

The whole support system of road side assistance asking repeatedly for the same information is ridiculous. Also the Road side Assistance doesn't speak with the dealership on your behalf. Then the main support desk I have to contact because the Dealer apparantly doesn't know what is wrong with the car - points me back to another dealer in Nyack. Who also doesn't have a loaner and they don't have an appointment until end of March.

Who do I speak with to resolve this issue of the 12v battery continously draining and setting off this domino effect of disasters. It's been 2 years since I posted the initial and my car has still not been fixed.

I love the car but I don't know whether the Ford support system is designed for the working person who has other things to do or it seems to have been designed by Kafka - its a circle of hell - trying to get a clear answer to what is wrong with this car.

Basically spent the whole day waiting while my wife runs around trying to figure things out and now were are off the the airport to pick up a rental since it's the only place open. There has to be a better solution to this in 2024!

 

[QED411]

Basically spent the whole day waiting while my wife runs around trying to figure things out and now were are off the the airport to pick up a rental since it's the only place open. There has to be a better solution to this in 2024!

And the kicker is that even after getting it towed to the dealership - because the 12v batter has died, the car cannot go back from the tow mode to parking so have to stop it from rolling away using a brick under the rear tire. the whole 12V battery design is seriously flawed.

 

[Mach-Lee]

So this problem is back again (it never really got resolved) - today my Mach-E with my wife drive my two boys - stopped suddenly in the middle of the Saw Mill River Parkway - very dangerous intersection. Fortunately she was able to roll it to a side street. What follows is the description of how NOT to operate a support call

The car was at 70% main battery - but suddenly the computer started displaying repeated error message and saying the rear doors were open etc. Then the door locks started thunking

a) 10:20am - first call to road side assistance. Filling in the VIN, email, Tel No etc. Said they will send someone out
b) Second call 10:30 - again fill out the same details - plus location. I don't know how Ford App doesn't communicate all this to the operator - it's all there
c) Some Tow Company picked up the ticket and said 60-90 minute wait. While I waited in the rain
d) 12:20 - Ford App shows now Tow Company delayed by 40 minutes
e) At this point I am sitting in the car - my wife has taken the kids home.
f) Tow Company cancels
g) Ford rep ask for all the initial information again to order another tow company
h) 2:30pm - Another Tow Company says will arrive in 30 minutes
i) 3pm Tow Company arrives and tows the car
j) Ford Rept tells me I have to phone my local dealer - who have NEVER been able to resolve this problem because only I can tell them to receive the car
k) Finally get to the dealer who tells me they are closed for the day and they don't provide loaner cars because insurance is too high...now at 7:42pm I am trying to find a rental car which falls below the $45 per day limit set by Ford. I guess I will get reimbursed but I have wasted a whole day and will waste more time in the coming weeks.

The whole support system of road side assistance asking repeatedly for the same information is ridiculous. Also the Road side Assistance doesn't speak with the dealership on your behalf. Then the main support desk I have to contact because the Dealer apparantly doesn't know what is wrong with the car - points me back to another dealer in Nyack. Who also doesn't have a loaner and they don't have an appointment until end of March.

Who do I speak with to resolve this issue of the 12v battery continously draining and setting off this domino effect of disasters. It's been 2 years since I posted the initial and my car has still not been fixed.

I love the car but I don't know whether the Ford support system is designed for the working person who has other things to do or it seems to have been designed by Kafka - its a circle of hell - trying to get a clear answer to what is wrong with this car.

Yes Ford roadside assistance sucks. They need to improve the loaner situation. Your dealer needs to test your 12V battery and probably run some software updates to improve the battery management. Make sure you don’t have a dashcam installed or are using 3rd party apps that drain the 12V battery.

You may want to read through these:

https://www.macheforum.com/site/threads/12v-battery-faq.32744/

https://www.macheforum.com/site/threads/how-to-recondition-service-your-12v-battery.11069/

 

[QED411]

Yes Ford roadside assistance sucks. They need to improve the loaner situation. Your dealer needs to test your 12V battery and probably run some software updates to improve the battery management. Make sure you don’t have a dashcam installed or are using 3rd party apps that drain the 12V battery.

You may want to read through these:

https://www.macheforum.com/site/threads/12v-battery-faq.32744/

https://www.macheforum.com/site/threads/how-to-recondition-service-your-12v-battery.11069/

Absolutely no third party apps. And no dash cam or anything connected. I can’t imagine my PAAK drains the battery. I haven’t even received a second key after nearly three years of ownership so PaAK is the only choice i have as a second key. The 12v battery has already been replaced once by the dealer but this is the second time the car stopped in middle of the road. The other times it was stuck in a car park.

also with battery issues the support line should tell you to a) pop the frunk and b) get the car into neutral BEFORE the battery dies completely because after that you are out of luck.

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