Brake Fluid Warning/BCM recall. I need guidance.

[antimatterblueknight]

I have a 2021 Mustang GT and I was notified through my Ford app there had been a recall for the brake Fluid indicator warning in Oct 2023. I called to make an appointment to have the recall fixed and was told that it could take up to two weeks and there was no rental car option which would’ve left me without a vehicle so I opted to wait on getting the recall done. Sometime thereafter I got in the car turned it on one day and I got an error message on the dash saying that my pre-collision assist was unavailable. With that I also noticed my cruise control stopped functioning. My lane minding system stopped functioning and my automatic headlight dimming function stopped functioning. skip two about eight months later down the road and I’m involved in an accident where someone pulls out in front of me. I bring my vehicle to the body shop, which is not a Ford shop mind you and I’m having the repairs done. I assumed that since I was involved in a front in collision that when the vehicle was repaired, it would also take care of the pre-collision assist and what not errors. It did not when I inquired to the body shop about that whole system I was told they ran all the checks and what not and the reason for the errors was due to the recall, referencing the brake system and the BCdue to the recall, referencing the brake system and the Bcm. They explained to me that because there was a breaking system ABS issue that the recall was going to correct the pre-collision assist the lane minding and the adaptive cruise control were not functioning because they’re all tied into the breaking system and once the recall was fixed, those system should come back online. It made perfect sense to me. So here we are two years later from the initial recall and I’m finally bringing my vehicle to the shop to get the recall fixed. I asked my service advisor about the preclusion assist in the lane minding and all of that stuff when I drop my vehicle off, I told them that I understood that that would fix that fix itSo here we are two years later from the initial recall and I’m finally bringing my vehicle to the shop to get the recall fixed. I asked my service advisor about the preclusion assist in the lane minding and all of that stuff when I drop my vehicle off, I told them that I understood that those systems were tied in together with the ABS and the brake system recall, and by getting a recall fixed, those systems would also be fixed. According to the service department, they fixed the recall, but none of those systems are functioning still and they’re telling me that I have to bring my vehicle back and pay for a diagnostic so that they can figure out what the problem is. Well, we already know what the problem is there was an issue with the breaking system and so the breaking involved with the pre-collision assist the breaking involved with the adaptive cruise control, and the potential breaking with the lane mining system went off-line because of the recall. So I’m not sure exactly what to do. I don’t wanna have to pay for a diagnostic on the vehicle when they already know what the problem is and it’s all tied into the recall so any suggestions as to how I should go about handling this on Monday when I bring my vehicle back at 8 AM for the third time would be greatly appreciated. Or if there’s somebody out there that knows more about this than I do and I’ve been told wrong or I understand wrong. Please help me clarify thank you.

Sponsored

 

[DT-GT]

I think that you may be making an incorrect assumption about the brake fluid level indicator level recall causing the issues with the other systems. My 2022 had the brake fluid level indicator recall and it was a simple fix. My dealer took care of it post-haste when I had it in for an oil/filter change. It had NO effect on the ABS, cruise, and those other systems!

As for the other issues you are having I do not think they are related to the recall. These systems are all related and are all
Impacted by the camera system on the windshield. For example, on a really foggy day the camera cannot see the road ahead well and the pre-collision braking, cruise control, and lane-keeping are disabled. But normally they return when the fog ends. Probably a different issue. Could be as simple as a reset required, or could be more.

As for the much discussed BCM recall for possible water intrusion, that was for 2024 and 2025 models. Not sure if you’re talking about that or something else.

 

[MAT1955]

......I am astounded that anyone would delay a such an important recall then have the nerve to whine about the repercussions. If this isn't an early April Fool's joke or a Troll then it is a perfect definition of idiocy. As they say "If you wait long enough stupid will show up".

 

[Frogdog1]

What @MAT1955 said.........This is the longest OP paragraph I've ever seen on any kind of forum.

 

[LouG]

I'm staggered at the two week wait for the recall. There's no way I'll leave my vehicles anywhere waiting for them to get a round tuit.

 

[antimatterblueknight]

......I am astounded that anyone would delay a such an important recall then have the nerve to whine about the repercussions. If this isn't an early April Fool's joke or a Troll then it is a perfect definition of idiocy. As they say "If you wait long enough stupid will show up".

How about offering some useful information to folks who ask for help instead of just insulting them and calling names. You don't know me. Nor do you know what my reasons were for waiting to have the recall addressed. In that time frame I lost my Father, Grandmother, and little Brother unexpectedly and I was hospitalized for 4 and a half months. Thank you so much for bringing to my attention how stupid I am.

 

[DT-GT]

Any comments or thoughts on my earlier post? Are you mixing diffrrrnt issues?

How about offering some useful information to folks who ask for help instead of just insulting them and calling names. You don't know me. Nor do you know what my reasons were for waiting to have the recall addressed. In that time frame I lost my Father, Grandmother, and little Brother unexpectedly and I was hospitalized for 4 and a half months. Thank you so much for bringing to my attention how stupid I am.

 

[MAT1955]

@antimatterblueknight .... sorry for your troubles. We all have them. I have incurable bone marrow cancer, that said I still think your post was 90% useless. You wait TWO years to get a brake related recall fixed and whine about everything in between. This forum has so many great members (many I am sure who have big challenges to face too) but ...who can help you - for goodness sake use your space and everyone's time wisely.

 

[Skye]

- The mustang6g site could offer still more asisstance

- The information the body shop gave you was incorrect

- The initial feedback from the dealer is correct

- Get all recalls cleared before proceeding with diagnostics and repairs

- If there is any outstanding maintenance to be done, complete it

OP,

I took a stab at editing your initial entry (below). I have difficulty reading huge blocks of text.

You own a 2021 Mustang, a 6th Generation (6G) car. This is a 7G site. Lots of great people here, some with direct experience to your issues, others with deep mechanical and engineering backgrounds. But the repository of information specific to your generation is at another site, the 6G site.

https://www.mustang6g.com .

You can start an account there, using the same username and password. People are offering you good advice. You could receive more still at the 6G site.

Specific to the car, yes, all systems are tied to one another. There are two computers supporting the vehicle as a whole, the Body Control Modules (BCM). There is one computer supporting the powertrain, the Powertrain Control Module (PCM). There are then multiple sub-systems and countless individual modules.

Given that, the body shop you went to was incorrect. The recall had nothing to do with the driver aids which stopped working. The recall was specific to brake fluid warning indications: the in-dash display wouldn't warn the driver when brake fluid was low. The fix for that recall was to update the software supporting the two BCMs. It was a simple re-flash, taking less that one hour.

https://www.mustang6g.com/forums/th...bcm-configuration-update.193347/#post-3876867

Regarding the driver aids which failed and stopped working, the Service Advisor is correct: the car needs to be diagnosed for those issues. Labor rates in my area are $150 an hour. That's a general number I've noticed elsewhere. Independent shops are now charging the same or close to that. I think you're better starting with Ford.

I have temporarily experienced the problems you mentioned. Others have to. But they've fixed themselves. To have multiple systems fail and remain down, that could be anything.

https://www.mustang6g.com/forums/threads/pre-collision-assist-not-available-message.175415/

Modern vehicles can be complicated. Could be a simple module fail or logic fault. Could be something more serious, like a wiring harness issue. If you begin studying what items could cause your issues, the list gets extensive.

I'm a bit confused on the brake fluid warning recall and if fixed. Towards the end of the initial entry, you're turning the vehicle in at the dealer, when the dealer says they "fixed the recall". That's a discussion you need to have with the dealer. To correct the recall, a tech had to hock up to the vehicle and update the BCM software, the Operating System for the car.

If the dealer has already updated your BCM software to clear the recall, yes, you'll then pay for any other diagnostic and repairs for the other, outstanding issues.

If the dealer has not corrected the recall, I recommend they do that, and only that, first.

Fixing the original recall will benefit you in a few ways. Along with clearing that issue, it will update the BCM software and reboot the car's logic. That might correct some of the other issues you've been experiencing. Or not. But it's a simple thing that will help establish a baseline.

After the recall repair, if the car continues to act up, prepare for and schedule another appointment. Expect to be billed about $150an hour. They will charge you for the diagnosis. The repairs are then extra. Some shops will discount the total bill, if you have it all done there. Some don't. It depends.

Good Luck.

Edit,

The recall I referenced is just one. Not knowing the history of the car, go to this site.

https://www.nhtsa.gov/recalls

Work with the dealer to clear all outstanding recalls on your vehicle.

---------------------Original Text, Edited-------------------------------

I have a 2021 Mustang GT and I was notified through my Ford app there had been a recall for the brake Fluid indicator warning in Oct 2023...Sometime thereafter...I got an error message on the dash saying that my pre-collision assist was unavailable. With that I also noticed my cruise control stopped functioning. My lane minding system stopped functioning and my automatic headlight dimming function stopped functioning.

Skip two about eight months... I’m involved in an accident... I bring my vehicle to the body shop...[,] not a Ford shop...[,to have] repairs done. I assumed that since I was involved in a front in collision that when the vehicle was repaired, it would also take care of the pre-collision assist... It did not [sic] when I inquired to the body shop about that whole system I was told they ran all the checks...the reason for the errors was due to the recall, referencing the brake system and the BCdue [sic]...

...I’m finally bringing my vehicle to the shop to get the recall fixed. I asked my service advisor about the preclusion [sic] assist in the lane minding...when I drop my vehicle off, I told them that I understood that that would fix that fix it...

According to the service department, they fixed the recall, but none of those systems are functioning still and they’re telling me that I have to bring my vehicle back and pay for a diagnostic so that they can figure out what the problem is...

 

[Zig]

I have a 2021 Mustang GT and I was notified through my Ford app there had been a recall for the brake Fluid indicator warning in Oct 2023. I called to make an appointment to have the recall fixed and was told that it could take up to two weeks and there was no rental car option which would’ve left me without a vehicle so I opted to wait on getting the recall done. Sometime thereafter I got in the car turned it on one day and I got an error message on the dash saying that my pre-collision assist was unavailable. With that I also noticed my cruise control stopped functioning. My lane minding system stopped functioning and my automatic headlight dimming function stopped functioning. skip two about eight months later down the road and I’m involved in an accident where someone pulls out in front of me. I bring my vehicle to the body shop, which is not a Ford shop mind you and I’m having the repairs done. I assumed that since I was involved in a front in collision that when the vehicle was repaired, it would also take care of the pre-collision assist and what not errors. It did not when I inquired to the body shop about that whole system I was told they ran all the checks and what not and the reason for the errors was due to the recall, referencing the brake system and the BCdue to the recall, referencing the brake system and the Bcm. They explained to me that because there was a breaking system ABS issue that the recall was going to correct the pre-collision assist the lane minding and the adaptive cruise control were not functioning because they’re all tied into the breaking system and once the recall was fixed, those system should come back online. It made perfect sense to me. So here we are two years later from the initial recall and I’m finally bringing my vehicle to the shop to get the recall fixed. I asked my service advisor about the preclusion assist in the lane minding and all of that stuff when I drop my vehicle off, I told them that I understood that that would fix that fix itSo here we are two years later from the initial recall and I’m finally bringing my vehicle to the shop to get the recall fixed. I asked my service advisor about the preclusion assist in the lane minding and all of that stuff when I drop my vehicle off, I told them that I understood that those systems were tied in together with the ABS and the brake system recall, and by getting a recall fixed, those systems would also be fixed. According to the service department, they fixed the recall, but none of those systems are functioning still and they’re telling me that I have to bring my vehicle back and pay for a diagnostic so that they can figure out what the problem is. Well, we already know what the problem is there was an issue with the breaking system and so the breaking involved with the pre-collision assist the breaking involved with the adaptive cruise control, and the potential breaking with the lane mining system went off-line because of the recall. So I’m not sure exactly what to do. I don’t wanna have to pay for a diagnostic on the vehicle when they already know what the problem is and it’s all tied into the recall so any suggestions as to how I should go about handling this on Monday when I bring my vehicle back at 8 AM for the third time would be greatly appreciated. Or if there’s somebody out there that knows more about this than I do and I’ve been told wrong or I understand wrong. Please help me clarify thank you.

Reboot, try disconnecting your battery for a couple of hours, initiate a reset. If the error was from an recalled abs issue the recall would have resolved the problem. Others have had the same pre collision system error.

 

[D/\rK•650]

Dam you guys are being a bit rough no? Maybe just say you'll get more help if you goto 6G forum. Who knows why the person waited. And to say this person is whining? Look i understand that it was a bit longer than needed and would've been better if they got it checked as soon as possible. But again we don't know anything about this person and i think that it was not necessary to be that rough, I don't think it helps anything. Man we all have hardships and I would feel bad if this person had no idea what to do or maybe it's first time reaching out for help. Sorry maybe im just to sensitive or something.

 

[Ken H.]

Do you have stock wheels/tire sizes? I changed mine to taller wheels (20”) & taller tires (285/35/20 up front). It threw my camera off. Lost precollision assist, cruise control, and lane keeper. Dealer couldn’t reset. Switched back to stock setup, system reset at dealer. Problem solved.

 

[D/\rK•650]

Just want say im sorry. And good luck with your issue.

 

[ap2.nick]

I've had this issue before with the same 21 Mustang GT model. I read the code though, and it gave me C0033-07, which was the front right tone wheel failure. I didn't replace it for a year bc I was dumb lmfao, and didn't realize what that code meant. I also got into a fender bender because the tone wheel wasn't working, so it disabled the pre-collision assist. Also, with the tone wheel malfunction, I first noticed my pre-collision assist warning go off, then I wasn't able to select any driving modes or choose any steering wheel modes, and my cruise control and lane assist didn't work either. So I just disconnected the Dyno plug, and it allowed me to choose the different modes, but lane and cruise control still didn't work, and pre-collision still didn't work. I would recommend just reading the code first and seeing what you get. If you do get a Tone wheel malfunction, the part is called "Wheel Bearing and Hub" from Ford. (Which was the reason why I didn't know what to get for a year was bc of the different names)

 

[Ken H.]

Interesting! I detailed my similar problem in previous posts after changing to 20” wheels & taller All Season tires. Dealer & Ford said it was camera angle changed. Went back to stock setup with summer only tires & problem resolved. Recently went back to 20’s with different, smaller front AS tires that are only slightly taller than stock. After about 1,000 miles, problem just recurred. Your issue was totally different cause with same results. I’ll see what dealership says

Sponsored