Parking Brake Fault - Vehicle Immobilized

[broberts1014]

Yesterday while stopped in traffic on a busy city street (2022 Eco Boost Maverick), the Parking Brake Fault - Service Now warning went off. The engine was on auto off at the time and would not restart after multiple attempts. Also, I could not put the vehicle into neutral, and the vehicle was effectively immobilized in traffic. I tried multiple times to remove the key, reinsert the key, and restart the engine. Eventually a patrol officer was able to stop behind my vehicle, was unable to start the vehicle with the key, popped the hood, and I believe disconnected and reconnected the battery cable, which allowed the vehicle to get put into neutral. After getting pushed off the road, the vehicle restarted. The vehicle drove fine home and seems fine today with no service warnings.

I had the battery tested today and that was not the issue. The app shows no issues. I am wondering if anyone has encountered a similar issue. Perhaps a bad sensor. I will take it to the dealer but it is troubling having no idea whether this will happen again. For now I just plan to turn off auto stop-start. I don't know how to override the error and force it to restart if the issue reoccurs. I would have tried remote start but didn't have a chance at the time.

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[Timothyd]

Yesterday while stopped in traffic on a busy city street (2022 Eco Boost Maverick), the Parking Brake Fault - Service Now warning went off. The engine was on auto off at the time and would not restart after multiple attempts. Also, I could not put the vehicle into neutral, and the vehicle was effectively immobilized in traffic. I tried multiple times to remove the key, reinsert the key, and restart the engine. Eventually a patrol officer was able to stop behind my vehicle, was unable to start the vehicle with the key, popped the hood, and I believe disconnected and reconnected the battery cable, which allowed the vehicle to get put into neutral. After getting pushed off the road, the vehicle restarted. The vehicle drove fine home and seems fine today with no service warnings.

I had the battery tested today and that was not the issue. The app shows no issues. I am wondering if anyone has encountered a similar issue. Perhaps a bad sensor. I will take it to the dealer but it is troubling having no idea whether this will happen again. For now I just plan to turn off auto stop-start. I don't know how to override the error and force it to restart if the issue reoccurs. I would have tried remote start but didn't have a chance at the time.

I don't like the electric/auto parking brake. Did great with the manual parking brake in the past and it's just another opportunity for complex glitches and trouble. If I could disable it I would.

 

[Old Young Man]

Auto park and brake was forced upon makers by lawsuits. Jeep had a big lawsuit.

 

[trumpet77]

You state the parking brake fault light went out? That makes it sound like there is no parking brake problem, so that makes me think the problem is start/stop.

 

[broberts1014]

Two days later and the problem is back. Parking brake fault - service now, and the vehicle will not start.

 

[Ford Motor Company]

Two days later and the problem is back. Parking brake fault - service now, and the vehicle will not start.

Hey there. Can you send over a message with your VIN and estimated mileage? I would like to take a closer look at your Maverick's loss of power issues.

 

[MakinDoForNow]

You state the parking brake fault light went out? That makes it sound like there is no parking brake problem, so that makes me think the problem is start/stop.

I was reading on an F150 forum of problems with 12v battery due to demands of start/stop. Do not remember more. It was 80+ pages long and do not remember title. It had engineer explaining BMS activity and that was where he mentioned start/stop issues.

 

[MakinDoForNow]

Two days later and the problem is back. Parking brake fault - service now, and the vehicle will not start.

If battery is in battery save mode maybe parking brake cannot be set giving the parking brake fault screen. Put maintainer on battery????
Might be a vote to put a quick disconnect on battery negative????

 

[Joe Strummer]

I believe every vehicle is required to have a manual over-ride so the driver can put it into neutral. There's a Thread on this Forum showing how.

 

[Ozarkbeard]

Two days later and the problem is back. Parking brake fault - service now, and the vehicle will not start.

Have it towed to the dealer while it's exhibiting the problem.

 

[GeorgiaMAV]

I have a 2022 xlt. The same issue happened to me earlier this week. In traffic at a red light and when the traffic light turned green and I let off the break to go my trucks breaks engaged and the warning came up on my dash and my vehicle shut off. I couldn’t restart or put the truck into neutral. Nothing came through my app. I had my truck towed to the local dealer. The dealer has had my truck for 3 days and still saying they have to run more diagnostics to figure out what’s going on. Still waiting to hear back from them. The weird thing is that I did not have the auto break feature on when it happened.

 

[Mav2112]

Did either one of you that have experienced this problem have any of the recent BCM recalls recently completed? I’m genuinely just curious. There seem to be so many folks having troubles after getting all this new software flashed.

 

[broberts1014]

The outcome of my situation was I took it to the dealer and they determined that the battery was low. Replaced the battery and the issue has not reoccurred. The odd thing was I had the battery checked at a local shop after the first incident and it tested at 80%, so the shop didn't recommend replacing the battery. While at the dealership I also had service recalls performed, so possibly the issue might have been related to one of the recalls. I haven't had any other issues with the vehicle.

 

[broberts1014]

I have a 2022 xlt. The same issue happened to me earlier this week. In traffic at a red light and when the traffic light turned green and I let off the break to go my trucks breaks engaged and the warning came up on my dash and my vehicle shut off. I couldn’t restart or put the truck into neutral. Nothing came through my app. I had my truck towed to the local dealer. The dealer has had my truck for 3 days and still saying they have to run more diagnostics to figure out what’s going on. Still waiting to hear back from them. The weird thing is that I did not have the auto break feature on when it happened.

That sounds very similar to what happened to me. I didn't have auto brake on, only auto stop/start. The error message was "parking brake fault - service now." Replacing the battery has resolved the issue for me, although it also could have been related to the service recalls I had performed at the same time the battery was replaced. Pretty odd behavior if it was just a low battery.

 

[Ford Motor Company]

I have a 2022 xlt. The same issue happened to me earlier this week. In traffic at a red light and when the traffic light turned green and I let off the break to go my trucks breaks engaged and the warning came up on my dash and my vehicle shut off. I couldn’t restart or put the truck into neutral. Nothing came through my app. I had my truck towed to the local dealer. The dealer has had my truck for 3 days and still saying they have to run more diagnostics to figure out what’s going on. Still waiting to hear back from them. The weird thing is that I did not have the auto break feature on when it happened.

Hi there! Will you send us a message with your VIN and your local Ford dealer? I can look into things on my end.

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