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 Mustang Mach E blogs. Replacement part is on hand but the dealership has a specialist being flown in to remedy the replacement part installation. Read in Mach E forums of similar problems where the battery became low and the vehicle was then disabled from engaging the drivetrain. Overall problem gave us pause on ownership and we will qualify for the Lemon Law buyback for CA if it comes to that. Looking to see if repairs will be complete this week.
2021 Ford Mustang Mach E fuel system complaints
Page 3 of 3: complaints 41 to 49 of 49, newest first, as owners wrote them.
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.
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.
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.
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 I returned to my car it failed to start.
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.
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