2021 FORD MUSTANG MACH E Fuelpropulsion System Problems

After recall-related software updates were performed on my 2021 Ford Mustang Mach-E, the vehicle began experiencing repeated electrical and climate control failures. The heating and defrost system stopped working, leaving the vehicle without heat and causing the windows to fog, which reduces visibility in cold weather and creates unsafe driving conditions. The vehicle has been taken to multiple authorized Ford dealerships for inspection and repair; however, the problem returned immediately after the repair. The issue was reproduced and confirmed by a second dealer. A required part is currently on back order until the end of Feburary, leaving the vehicle unrepaired for an extended period. In addition, the vehicle experienced 12-volt battery failure and slow charging after the last recall update. These issues were not present prior to the recall. There were no warning lights before the failures occurred. During severe winter weather conditions in Pennsylvania, the lack of heat and...

Car stalled once while going to a military appt but started up 3 mins later. Car then made a noise then stalled out of nowhere on the highway at a slow speed in heavy traffic causing anxiety. vehicle then had me stranded waiting for a tow to find out it’s the HVJB .

It has several error messages including "Stop safely now". This seems to be the same issue as recall 23S56 (TSB 22-2178). The vehicle is not drivable as it will not start or go into gear. Seems to be known issue with the HVBJB.

It accelerated unexpectedly with no input while decelerating in one pedal drive mode. Cruise control was not in use at all during the drive.

Mach e standard edition shows multiple signs of a failing High Voltage Battery Junction Box (HVBJB). The vehicle was bought certified pre owned with only 12k miles on the vehicle. At 16k miles (2 months of ownership) the vehicle showed a high voltage battery warning and power train malfunction warning. Three warning lights were displayed on the dash which were: a yellow turtle, wrench, and car with exclamation. Vehicle was taken to service department where they ran updates and said the issue was a one pedal drive error and ran a standard osp for a power train update (not related to this power train issue). They made no mention of the battery and power train issue on the service record. 1-2 weeks later and about 1k miles, the same issue repeated. The vehicle was taken to a different dealership where they indicated the car had a over heating charge coupler...

Driving in a 40mph zone and car suddenly lost all power followed by a message stop safetly now and the 12v battery icon. While coasting car lost power steering and upon stopping went into park and would not go into neutral for 30+ minutes

Took vehicle to dealership for warranty repair as dealer confirmed parts available. Did not do repair due to Ford issuing a email to stop all repairs under this recall until further notice. Contacted Ford no reason why recall repairs stopped, no information when they would begin again. Ford recall notice blatant information without explanation. NHTSA site information is not accurate, parts are available but for undisclosed reasons they will not perform repair.

One pedal drive system failure. Had the 22B50 charge port recall done on the 18th of April 24. After leaving the dealer upon approach to a light one mile away, one pedal disengaged during de-acceleration for the light. Warning did come up near the same time. It felt like vehicle was accelerating, but just loss regen. It has since happened daily. sometimes multiple times. Restart the car and it works normal. The recall was to reprogram the BCCM according to the dealer.

This vehicle has 3 outstanding recalls: 21V711, 21V712, 23V687. The car was purchased new from Orchid Isle Ford in May 2021. They are the only electric vehicle Ford Dealer on Hawaii Island (they operate another non-electric vehicle dealership on the island). On [XXX] I had the annual maintenance performed. I requested that recalls 21V711 & 21V712 be done as well. the dealership declined and stated they would call me when they could do those recalls. They have never called. I started calling the dealership every 3 months beginning in Sept 2022. They have always refused to perform those recalls w/o explanation. In February 2024 I called to schedule the 36-month service and have all 3 recalls done. I was advised that the dealership could not do any of the recalls. I was called on Feb 23 by a person identifying themselves as the owner's sister (Mary) promising they'd make things...

On April 10, 2024, my vehicle experienced a warning message to service vehicle and a sudden loss of power while I was driving on the freeway. The issue was caused by a failure in my high voltage battery junction block. Something that Ford had already issued a software update vehicle to my vehicle for a recall. However clearly the software update was not an appropriate fix for the issue and should not be considered fulfillment of the recall. In fact, Ford has an open recall for the extended battery configuration of my vehicle to proactively replace this defective part. I am reporting this issue to the NHTSA because clearly the software ‘fix’ did not resolve the safety issue AND it’s scary that standard range batteries are neglected from the overall recall that applied to the rest of the model. Ford needs to be proactively addressing this issue for all affected...

This is a follow up to ODI 11510437 that was filed via the phone in 2/2023 related to now NHTSA Recall 23V687. The vehicle in question experienced exactly the issue described in the recall notice. Our incident was part of the NHTSA investigation. The vehicle had its high voltage battery junction box replaced in +/- March 2023, but the new box was the same design as the old box that is poorly engineered. Notices sent out in Fall of 2023 indicating that there was a recall were not sent to us for this vehicle. Similarly, the notice sent in April 2024 informing Mach E owners to schedule appointments at their dealer was not sent to us for this vehicle. Upon contacting Ford, they indicated that this vehicle is not part of this recall. After insisting on speaking to a supervisor, he claimed that it was now a part of the...

Dashboard warnings about the high-voltage battery due to a fault. There is a known issue with the HVBJB (high-voltage battery junction box) plus a powertrain malfunction warning..

We came out to our parked car and got a message that said Stop Safely Now. The vehicle would not shift into gear. The dealership had confirmed that the high voltage junction box has failed. We did not get the Service Vehicle Soon warning prior to the failure, despite having had the recall software update applied. The first sign of failure was a loss of motive power. This is a safety issue because loss of motive power while driving can result in loss of control of the vehicle. The loss of heating and cooling combined with the loss of motive power is also a significant safety risk if the failure occurs in a remote location experiencing extreme temperatures. The part has yet to be replaced, but I’m sure Ford will be retaining it for inspection.

The HVBJB subassembly in ALL Ford Mach-e vehicles has known defects with 'under-designed' main contacts that are known to fail under normal charging and driving conditions as outlined in current open Ford recall notice. Unfortunately, the internal damage to contactors is not visible externally, and warning notices on display only AFTER the damage has occurred, and can result in sudden loss of propulsion power at highway speed, loss of power steering, and power brakes... and failure of other 12v systems due to failure to charge the 12v battery properly after contacts are damaged. Less catastrophic results can include failure to start; which can 'strand' driver's and passengers in remote areas, bad weather conditions, as well as cause loss of use for weeks due to delays in replacement parts and local Dealerships needing equipment and training to effect removal/replacement of faulty unit with a new HVBJB having re-designed 'beefier' components.​ ​...

I am filing this complaint regarding the potential failure of the High Voltage Battery Junction Box. There have been many failures reported on the forums some experiencing multiple failures. Ford provided a software update that supposedly predicts an impending failure reducing available propulsion power. I do not feel comfortable driving a vehicle with a ticking time bomb. Losing propulsion power while driving at highway speeds could result in a serious safety senerio. I would like to see Ford provide a real fix.

Shortly after entering the freeway on August 18, 2023, my vehicle experienced a powertrain malfunction and displayed a Service Vehicle Soon warning light along with a vehicle with an exclamation point light and a wrench light. Motive power was reduced. I received a Diagnostic Test Code of P0ADA, indicating that there was a hybrid powertrain fault. The dealer has confirmed the code and is ordering a replacement part.

On Friday 8/18/23 I was driving down a major freeway and my Mach-E jolted violently. I then received a "Stop Safely Now" and "Service Vehicle Soon" message. The vehicle lost all power at this time. Being on a very busy freeway my safety was at risk and I was luckily able to coast over to the right shoulder. The car refused to "start" after pulling over however the 12v battery did work so I was able to use accessories. Once towed to the dealer I was able to confirm a P0AA2 TSB code that indicated that a conductor was stuck open on the high voltage junction box. This was supposed to be fixed by a previous recall software update that FORD uploaded to my car however that was not the case. I am now without a car for 2 weeks but more importantly I am concerned for the safety of...

After receiving the remedy to NHTSA campaign 22V-412 on Aug 5, 2022 via a Ford Power-Up over-the-air update, my high-voltage battery contactors still overheated and failed on Oct 25, 2022, requiring warrantied replacement by my Ford dealer on Oct 27, 2022.

Unintended acceleration from a stop when pushing accelerator. Has happened 2 times in the last 2 days. I touched the throttle from a stop 2 time and it took off like I put the accelerator to full throttle (which I didn’t). Very dangerous situation in parking lots or around pedestrians. I have scheduled an apt with my local dealer.

Ford released an OTA update for the HVB issue Mach-E were having and leaving drivers stranded. I have seen that even with the update many people are still having the cars break down while driving and needing the High Voltage Battery Connector replaced. I am worried that this may happen to my car one day while driving and could cause an accident or death. Is there anyway to force Ford to fix every car that had this issue before we break down? The temporary fix of software is not good. I think FOrd should be forced to recall all Mach-E and replace the connector before there is an accident that leads to deaths on the road.

HVBJB failure

I had been driving without issue, no warnings from the car. I parked at a gas station to get a snack. When I got back in the car could not be started or driven. It has to be placed on a flatbed and towed to the dealer. The message on start was “Stop safely now”. My vehicle had Safety Recall 22S41, which obviously does NOT fix the issue.

Ford is unable to apply software fix to resolve NHTSA Recall Number22V412 because Accessory Protocol Interface Module (APIM) needs to be replaced first. The APIM is not in supply and there is no estimated availability date.

My vehicle has 13,000 miles on it and I have been driving it without any problems until August 12, 2022 when I turned the vehicle on and there was "service now" and a "Battery service" message. I was aware of this problem because it was posted online and Ford has sent me mail about this problem but I thought it could be fixed by an over the air update, which I performed already. So I contacted the nearest dealer to book an appointment to remedy this issue but the next available appointment was on August 31st so it was 2 weeks from then. I decided to give it a shot and drive it and I was able to drive approximately 40 miles before the car shut down as I was turning right on a stoplight on my way to work. The propulsion did not work along with a series of...

On May 14, 2022, I stopped twice on a 120 mile trip to recharge my Mach E at a level 3 DC charger. Upon completing each charge, the ring around the charging port turned red and I received a default message. I plugged my car into my home level 2 charger and the car completely locked down and I was unable to reenter the car. I have since learned that this is the classic sign of a HVBJB failure. The dealerships updated the car's programming but did not replace the HVBJB. The HVBJB subassembly in ALL Ford Mach-e vehicles has known defects with 'under-designed' main contactors that are known to fail under normal charging and driving conditions as outlined in current open Ford recall notice for my vehicle 22s41. Unfortunately, the internal damage to contactors is not visible externally, and warning notices on display only after damage has occurred, and...

The HVBJB subassembly in ALL Ford Mach-e vehicles has known defects with 'under-designed' main contactors that known to fail under normal charging and driving conditions as outlined in current open Ford recall notice for my vehicle 22s41. Any internal damage to contactors is not externally visibley, and warning notices on display only after damage has occurred, and can result in sudden loss of propulsion power at highway speed, loss of power steering, power brakes and failure of other 12v systems due to failure to charge the 12v battery properly after contactors are damaged. Less catastrophic results can include failure to start; which can 'strand' driver's and passengers in remote areas, bad weather conditions, as well as cause loss of use for weeks due to delays in replacement parts and local Dealerships NEED equipment and training to effect removal/replacement of faulty unit with a new HVBJB having re-designed 'beefier' components.​ ​...

The HVBJB subassembly in ALL Ford Mach-e vehicles has known defects with 'under-designed' main contactors that are known to fail under normal charging and driving conditions as outlined in current open Ford recall notice for my vehicle 22s41 NHTSA Campaign Number: 22V412000. Unfortunately, the internal damage to contactors is not visible externally, and warning notices on display only after damage has occurred, and can result in sudden loss of propulsion power at highway speed, loss of power steering, and power brakes... and failure of other 12v systems due to failure to charge the 12v battery properly after contactors are damaged. Less catastrophic results can include failure to start; which can 'strand' driver's and passengers in remote areas, bad weather conditions, as well as cause loss of use for weeks due to delays in replacement parts and local Dealerships needing equipment and training to effect removal/replacement of faulty unit with a...

The HVBJB subassembly in ALL Ford Mach-e vehicles has known defects with 'under-designed' main contactors that are known to fail under normal charging and driving conditions as outlined in current open Ford recall notice for my vehicle 22s41. Unfortunately, the internal damage to contactors is not visible externally, and warning notices on display only after damage has occurred, and can result in sudden loss of propulsion power at highway speed, loss of power steering, and power brakes... and failure of other 12v systems due to failure to charge the 12v battery properly after contactors are damaged. Less catastrophic results can include failure to start; which can 'strand' driver's and passengers in remote areas, bad weather conditions, as well as cause loss of use for weeks due to delays in replacement parts and local Dealerships needing equipment and training to effect removal/replacement of faulty unit with a new HVBJB having re-designed...

The HVBJB subassembly in ALL Ford Mach-e vehicles has known defects with 'under-designed' main contactors that are known to fail under normal charging and driving conditions as outlined in current open Ford recall notice for my vehicle 22s41. Unfortunately, the internal damage to contactors is not visible externally, and warning notices on display only after damage has occurred, and can result in sudden loss of propulsion power at highway speed, loss of power steering, and power brakes... and failure of other 12v systems due to failure to charge the 12v battery properly after contactors are damaged. Less catastrophic results can include failure to start; which can 'strand' driver's and passengers in remote areas, bad weather conditions, as well as cause loss of use for weeks due to delays in replacement parts and local Dealerships needing equipment and training to effect removal/replacement of faulty unit with a new HVBJB having re-designed...

The HVBJB subassembly in ALL Ford Mach-e vehicles has known defects with 'under-designed' main contactors that are known to fail under normal charging and driving conditions as outlined in current open Ford recall notice for my vehicle 22s41. Unfortunately, the internal damage to contactors is not visible externally, and warning notices on display only after damage has occurred, and can result in sudden loss of propulsion power at highway speed, loss of power steering, and power brakes... and failure of other 12v systems due to failure to charge the 12v battery properly after contactors are damaged. Less catastrophic results can include failure to start; which can 'strand' driver's and passengers in remote areas, bad weather conditions, as well as cause loss of use for weeks due to delays in replacement parts and local Dealerships needing equipment and training to effect removal/replacement of faulty unit with a new HVBJB having re-designed...

While returning from vacation, driving home on the highway, our car suddenly stopped working. We had been traveling at approximately 65 mph on SR 1 in Delaware when I accelerated to pass another vehicle and the car suddenly jolted forward and the engine seized. I received a warning to pull to a safe location as soon as possible. Thankfully, we were able to pull the car over to the shoulder of the highway without incident. The cars electrical system gradually shut down, limiting our ability to place the vehicle in neutral for towing. Approximately 250 miles from home and forced to wait more than 2 hours in the 90 degree weather with no AC, we were forced to bring the car to the nearest ford dealership in new castle Delaware. Since the battery and power completely failed, the dealership had to jump the 12 volt battery several times to get...

My vehicle was built with under-specked high voltage battery joint assembly bracket. The failure of this connection has caused many incidents whereby the car cannot start, or suddenly stops while driving. The part is either not to original specification or was not designed correctly. In either case, providing a SW fix to simply limit the voltage does not actually prevent or correct the problem. As this fix has rolled out, there are numerous reports of the issue still happening. This is because the fix doesn't fix the original condition, it only serves to limit the scope going forward. But if the part has been in use for 2 years as mine is, then the damage has already occurred and the fix will not prevent my issue. The appropriate fix for the problem is a replacement HVBJB, which Ford is only installing AFTER the incident occurs. This is totally unacceptable and...

The HVBJB subassembly in ALL Ford Mach-e vehicles has known defects with 'under-designed' main contactors that are known to fail under normal charging and driving conditions as outlined in current open Ford recall notice for my vehicle 22s41. Unfortunately, the internal damage to contactors is not visible externally, and warning notices on display only after damage has occurred, and can result in sudden loss of propulsion power at highway speed, loss of power steering, and power brakes... and failure of other 12v systems due to failure to charge the 12v battery properly after contactors are damaged. Less catastrophic results can include failure to start; which can 'strand' driver's and passengers in remote areas, bad weather conditions, as well as cause loss of use for weeks due to delays in replacement parts and local Dealerships needing equipment and training to effect removal/replacement of faulty unit with a new HVBJB having re-designed...

The HVBJB subassembly in ALL Ford Mach-e vehicles has known defects with 'under-designed' main contactors that are known to fail under normal charging and driving conditions as outlined in current open Ford recall notice for my vehicle 22s41. Unfortunately, the internal damage to contactors is not visible externally, and warning notices on display only after damage has occurred, and can result in sudden loss of propulsion power at highway speed, loss of power steering, and power brakes... and failure of other 12v systems due to failure to charge the 12v battery properly after contactors are damaged. Less catastrophic results can include failure to start; which can 'strand' driver's and passengers in remote areas, bad weather conditions, as well as cause loss of use for weeks due to delays in replacement parts and local Dealerships needing equipment and training to effect removal/replacement of faulty unit with a new HVBJB having re-designed...

The HVBJB subassembly in ALL Ford Mach-e vehicles has known defects with 'under-designed' main contactors that are known to fail under normal charging and driving conditions as outlined in current open Ford recall notice for my vehicle 22s41. Unfortunately, the internal damage to contactors is not visible externally, and warning notices on display only after damage has occurred, and can result in sudden loss of propulsion power at highway speed, loss of power steering, and power brakes... and failure of other 12v systems due to failure to charge the 12v battery properly after contactors are damaged. Less catastrophic results can include failure to start; which can 'strand' driver's and passengers in remote areas, bad weather conditions, as well as cause loss of use for weeks due to delays in replacement parts and local Dealerships needing equipment and training to effect removal/replacement of faulty unit with a new HVBJB having re-designed...

On May 20, 2022, for the second time in a month my 2021 California 1 Mach e has had a catastrophic failure. It is less than a year old with 21,000mi. First time (April 20, 2022) I pulled out onto road after fast charging. Tonight, I started driving out of parking space after shopping. Emergency bells go off, all kinds of alerts and the car dies. You cannot get the gear cluster to turn...at all. Car will not turn off either. If this happens on a highway, it could be life endangering. First time it happened I was in Charlotte and Ford Dealer (Capital Ford) said it was 12v battery issue. Said they fixed it. I took it in to Palmetto Ford in Charleston to have it investigated further and they said it was fixed. That was two weeks ago. Now it's happened again. In second incident on May 20,...

While parking in a garage the vehicle unexpectedly accelerated and ran into a wall. Anyone in or around the car may have been seriously ignored. The issues has happened twice but can not be reproduced by me. There we no indicators that the event was about to take place There is a recall for this on the vehicle type but not for the date of my manufacturing.

Bricked Mach E Extended Range with 10K miles and recently completed the roof and windscreen recall the week prior. Went to brunch and then came out to a car that would not start. Warning of "Stop Safely Now" even though the vehicle was driven to the location and then sat for 2 hours and was currently parked and still gave us this message. Low voltage (12 Volt) came in slightly low at 12.6 VDC. Attempted two jumps from another vehicle and a higher amperage tow truck with no change in error code nor would the vehicle "start". We resulted in doing a tow to a dealership for potential repair. Dealership has had it now for going on the third week. They are citing the replacement of the battery bus where the Low Voltage 12 VDC interfaces with the brains and main battery system. This has been cited before in the...

After charging at Electrify America using DC Fast Charger, car windows stopped working, then safety alerts started flashing "Charge State Error" and "Stop safely now!" alerts. Car would not go forward but would go in Neutral some tries. Flatbed was able to load car and haul to closest dealer. Tech said High Voltage Junction Box went bad and needed to be replaced. 3 weeks later, part is replaced but windows don't work. Dealer says it will be 2 more weeks before windows can be repaired.

Vehicle would not start after a brief stop, with a "Stop Safely Now" error. Vehicle could not be shifted out of Park, and could only be shifted into Neutral using the Emergency Tow Mode. Vehicle was towed to nearest Ford dealer, and the High-Voltage Battery Junction Box (HVBJB) failed and required replacement. This is a known issue that has affected many similar vehicles of the same make, model, and year.

I received a “Stop Safely Now” message upon returning to my vehicle at the end of a work day. The vehicle would not shift into drive, but accessory power did work. It was late at night and in a hospital parking structure, I was forced to leave the vehicle there overnight. After some unsuccessful troubleshooting the next day, I had to call a tow truck and have the vehicle brought to a dealer for repair. It was diagnosed with a faulty BECM (Battery Energy Control Module). After repair, I have not yet seen a repeat occurred the issue.

I was stranded in a parking lot in the evening when my car wouldn't start. The vehicle displayed a "STOP SAFELY NOW" message and I couldn't get the car to move on its own. This happened on April 13, 2022. My safety was at risk because I was in a parking lot at night and unable to engage my car. I had to call and wait for a tow truck. The Ford dealership, in consultation with Ford engineers, confirmed that it was due to a faulty High Voltage Battery Junction Box (HVBJB) and it had to be replaced. With the faulty HVBJB, the car was undrivable. The HVBJB was inspected by Ford personnel and determined to be faulty. It was replaced under warranty. There were no other messages or warnings before my car failed to start. No prior symptoms. I drove normally to a store, parked the car, and when...

Was driving 55+ mph on freeway, was told by the car to 'stop safely' Had no accelleration, no power steering, came to a stop at a stop sign, could not shift to neutral to move it.

On 4/1, while entering the FWY @ about 50 mph under moderate accel, big thump (felt like the trans fell out), drivers display cycled thru multiple errors with "stop safely now" repeatedly flashing. Throttle went dead, speed dropped to 35 and steadily decreased. Was able to slowly exit FWY @ next exit, rolled thru light @ bottom of ramp and pulled over to the side of a busy side street. Came to a stop & car would not move. Put in park, cycled on/off several times. Would not come out of park. Tow truck arrived. Found emergency tow function in the main display. Tow driver hooked up front, put rears on dolly & towed to dealer.

Car was parked in my home garage and would not start, displaying "Stop safely now." Vehicle appears to have code P0AA1 Hybrid battery positive contactor - circuit stuck closed. Many other Mach-E vechicles are exhibiting this defective part in the high voltage battery system, which appears to be the Battery Electrical Control Module (BECM). Ford appears to be aware of this issue, and, unconfirmed, has stopped production of the Mach-E to canibalize parts to fix vehicles that fail. However, some are less lucky than me and had their car stop dead while driving on the highway, and Ford should not be waiting for vehicles to stop and strand people before fixing this serious defect. Please see here for more info on my situation: https://www.macheforum.com/site/threads/%F0%9F%98%ADmach-n-cheese-stop-safely-now-%F0%9F%98%AD.16174/

As the vehicle was braking to a stop at a stoplight the rear motors began chattering. The vehicle stopped and gave multiple error messages including "Shift System Fault" and "Stop Vehicle Safely." It locked the parking brake and could not be moved. It was stuck in the middle of a busy intersection on a county highway. It could not be driven or pushed out of traffic until the error cleared. It was a hazard to the occupants and other drivers on the road. 911 was called to get support with traffic. There was no indication before this failure occurred. It will be going in for service in 2 days. This is the second occurrence of the failure on this vehicle, the previous one at 2011 miles.