For everyone who hasn’t done the BCM Recall Remedy

[steveo1960]

Try again attaching BCM Con D section. I hope it works.

Thanks for the diagrams!

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[GrabThatBlue]

For anyone who had it done, about how long did the dealership have your car? This is my only vehicle and basically the only dealership I'd remotely trust is 40 minutes away.

5 hours

 

[D/\rK•650]

Thank you for posting this. I had mine done it took about a day. Couple hours for the caulk to dry and the test. But id say worth it, and mine was not showing any signs of water ingress.

 

[LouG]

For anyone who had it done, about how long did the dealership have your car? This is my only vehicle and basically the only dealership I'd remotely trust is 40 minutes away.

A full day.

 

[BimmerDriver]

I really don't have faith in a random tech at a random dealership, and I don't want to go through this if my car isn't leaking.

Am I alone in this?

So, I looked, and it appears dry. So I shoved a towel up there above the BCM and the next time I drive in the rain or wash it, I'll check for moisture.

Anyone see a flaw in this ingenuity?

 

[JPW65]

Mine had the recall done prior to sale.

 

[ChitownStang]

I really don't have faith in a random tech at a random dealership, and I don't want to go through this if my car isn't leaking.

Am I alone in this?

So, I looked, and it appears dry. So I shoved a towel up there above the BCM and the next time I drive in the rain or wash it, I'll check for moisture.

Anyone see a flaw in this ingenuity?

I like this method, let us know.
I avoid dealerships like the plague and do all my own maintenance.
I don’t drive in the rain very often so guess I’ll risk it.

 

[Starship Enterprise]

My car doesn't get wet. The less the dealers touch my car the happier I am.

 

[AZ_Ryan]

I really don't have faith in a random tech at a random dealership, and I don't want to go through this if my car isn't leaking.

Am I alone in this?

You're not alone. I don't trust dealers. I haven't had mine done and don't plan on it.

 

[COBill]

I agree, but it looks to me like it is not located in a dry area because of the water intrusion or just high humidity and/or condensations with temperature variations could create issues later in years.

If properly sealed, that area should never get wet.

 

[bbowes9]

BBOWES9 - thanks very much for posting these pictures of the BCM. Based on other posted pictures from the forum I have been able to better understand all the BCM connectors and their functions.Your posted photo of the male connector pins I would guess that the pins are not gold plated (maybe silver plating or solder flow??) BTW- I wish they were gold plated as that would minimize corrosion and create better contact.

I also noticed that the printed board does not look like it has any conformal coating against moisture maybe just epoxy solder mask? With my engineering background if I saw this inside the Mustang GTD I would be asking for gold plated pins on this BCM module :-) I edited your photos and added some additional info that could be useful for any other engineering minds on this forum.

Hey! Ford actually did epoxy the entire board. every side is epoxied, and only the connectors seem to be exposed (which makes sense). As for the gold plating, It didn't look to be but I could have missed that. If it is gold plated it would be on the harness side!

 

[steveo1960]

I really don't have faith in a random tech at a random dealership, and I don't want to go through this if my car isn't leaking.

Am I alone in this?

So, I looked, and it appears dry. So I shoved a towel up there above the BCM and the next time I drive in the rain or wash it, I'll check for moisture.

Anyone see a flaw in this ingenuity?

It's as good as any. Foot powder spray is the way we tracked leaks back in the "old days" but towels in this case will be much tidier. I had my windshield replaced by a well regarded independent shop so the last thing I want is some random tech prying it up.

As soon as things warm up, I'm going to stuff some paper towels up there as well and spray water all over the suspected areas around the cowl and see what happens. I also have an inexpensive moisture detector so I'll play around with that as well.

My motto is "if it ain't broke don't 'fix it'.

 

[Marty1000]

Hey! Ford actually did epoxy the entire board. every side is epoxied, and only the connectors seem to be exposed (which makes sense). As for the gold plating, It didn't look to be but I could have missed that. If it is gold plated it would be on the harness side!

Thanks, great to know that the board has conformal (epoxy) coating. Looks like the weakest link are the male pins. In proper connector mating one would like to see both male and female pins plated with the same metal (nickel,gold,etc). I am guessing that the female plug pins have the same plating.
Based on your picture of effected pins and their corrosion I am still unclear how the water/moisture selected just those pins that you marked and did not effect all the pins on that connector. I wonder if dielectric grease coating applied on the male pins would help.

 

[Marty1000]

It's as good as any. Foot powder spray is the way we tracked leaks back in the "old days" but towels in this case will be much tidier. I had my windshield replaced by a well regarded independent shop so the last thing I want is some random tech prying it up.

As soon as things warm up, I'm going to stuff some paper towels up there as well and spray water all over the suspected areas around the cowl and see what happens. I also have an inexpensive moisture detector so I'll play around with that as well.

My motto is "if it ain't broke don't 'fix it'.

You could also emulate the FORD compliance recall RCMN-25V546-6403.pdf info and do the extreme water hose test that the dealer tech should do.

 

[bbowes9]

Thanks, great to know that the board has conformal (epoxy) coating. Looks like the weakest link are the male pins. In proper connector mating one would like to see both male and female pins plated with the same metal (nickel,gold,etc). I am guessing that the female plug pins have the same plating.
Based on your picture of effected pins and their corrosion I am still unclear how the water/moisture selected just those pins that you marked and did not effect all the pins on that connector. I wonder if dielectric grease coating applied on the male pins would help.

I did look how it was falling onto the BCM, the connectors themselves are pretty well sealed so I'd imagine its just enough to get in and cause a bit of corrosion. most of the water ended up inside from the top of the BCM and just sat at the bottom. I was able to shake a decent amount out of it before opening the case to get the motherboard out. I believe they applied grease to the thicker female connectors but not the smaller ones. I pulled the BCM out right after it rained as well. I couldn't imagine how bad it could have been if the board wasn't epoxied.

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