LCM?

[Grimrepairman]

fastblackmerc, are you available to do an LCM in the next week or two? I can have it out and shipped before the weekend.
Thank you.

[decipha]

why not just bring it to the dealer and let them do it for free ?

[Mr. Man]

why not just bring it to the dealer and let them do it for free ?Because FBM will do a better job repairing the existing LCM w/o butchering up all the under dash wiring Ford's fix does.

[fastblackmerc]

fastblackmerc, are you available to do an LCM in the next week or two? I can have it out and shipped before the weekend.
Thank you.

Yes I'm available.

[fastblackmerc]

why not just bring it to the dealer and let them do it for free ?

You obviously haven't seen the "fix" from Ford.

[RubberCtyRauder]

why not just bring it to the dealer and let them do it for free ?

Read the hack job it is here

https://www.mercurymarauder.net/forums/showthread.php?104602-15S39-LCM-Bypass-Recall-Documented

[gdmjoe]

decipha - why not just bring it to the dealer and let them do it for free ?
Personal experience ... http://www.gdmjoe.com/nonono.gif


Recently had the LCM bypass done... (https://www.mercurymarauder.net/forums/showthread.php?p=1541363#post1 541363) ««« -click-

.

[Grimrepairman]

why not just bring it to the dealer and let them do it for free ?

Idk about you guys, but I read this as a joke/ sarcasm.
fastblackmerc does excellent work and I'd like him to keep doing it.

[Peace2Peep]

Hey FBM! I hit you up on PM's a while ago...I thought you weren't doing anything anymore cuz i never heard back!

[fastblackmerc]

Hey FBM! I hit you up on PM's a while ago...I thought you weren't doing anything anymore cuz i never heard back!

I probably missed it. PM me again.

[decipha]

Was no joke I honestly had no clue that they were doing that type of hackery. I assumed they installed newer better designed LCM not bypass it. I've been getting the letter in the mail now for a couple years and have just ignored it since I hadn't had time to schedule it. Now that I know I will not be getting it done.

On a side note, I wired up a 30 amp relay from the alternator to the headlights (blue/white wire -runs to both side so I tapped in on the passenger side) and used the fog lamp wire (orange) as the trigger. When I turn my fog lamps on my headlights get noticeably brighter. Using a DMM I seen a 2 volt drop at the headlight connector with only the stock wiring. It made so much of a difference that I took the LEDs off and put halogens back in her.

[Mr. Man]

Novice question, is the Marauder drivable w/o an LCM installed? I know the headlites and blinkers won't work, but what about brake lites? Does the computer put the car in limp mode or anything? I'm to old and crippled to remove mine and the kid at the dealer said he could remove it. Then I can send it to FBM, but I'd need to drive the car home till FBM sends the LCM back. Dealer is about 3 miles from my house.

[fastblackmerc]

Only lights you will have without the LCM is the brake lights which are on a separate circuit.

No headlights, no foglights, no turn signal, no instrument lights and no interior lights.

Car will run normally.

[Mr. Man]

Only lights you will have without the LCM is the brake lights which are on a separate circuit.

No headlights, no foglights, no turn signal, no instrument lights and no interior lights.

Car will run normally.Thanks. :)

[martyo]

why not just bring it to the dealer and let them do it for free ?

We’ve seen too many of the hacked up dealer repairs.

I’ve had FBM do countless repairs without a single issue.

FBM wins hands down.

[Grimrepairman]

Mr. Man, just lmk when you're ready and I'll come take it out. It's only 2 screws and a few connectors. Easy enough to do in the driveway.

[fastblackmerc]

The LCM is just above and in front the diagnostic OBDII connector (just to the right of the steering column). On the front of the LCM are two grey connectors, depress the release latches and pull the connectors out of the LCM. Remove the two 7mm screws that hold the LCM to the bracket. Release the latch securing the LCM to the bracket. Push the LCM towards the firewall as you rotate the front of the LCM towards the roof.Once the LCM clears the bracket, pull it down and you can release the last electrical connector.

To reinstall, do the same steps in reverse.

[Mr. Man]

Mr. Man, just lmk when you're ready and I'll come take it out. It's only 2 screws and a few connectors. Easy enough to do in the driveway.Will take you up on that in the near future. Can meet you at Frank's and buy you lunch. Drive home for me would only be one easy left turn, so as long as the brake lites work I'd be willing to drive over for lunch. I'll PM you when I'm ready to see when we can meet up.

[freakstatus]

FBM.. Mines in the mail (should go out today). Sent you a PM. Thanks!


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[Brian H]

Anybody else get the recall letter towards the LCM?

[RubberCtyRauder]

Anybody else get the recall letter towards the LCM?

Yes, don't let Ford hack it up. See member fastblackmerc

[RubberCtyRauder]

Read this

https://www.mercurymarauder.net/forums/showthread.php?104602-15S39-LCM-Bypass-Recall-Documented

[fastblackmerc]

FBM.. Mines in the mail (should go out today). Sent you a PM. Thanks!


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Got it. Will be back in the mail tomorrow.

[TED73]

Regarding this recall letter for 15S39, I was planning on getting this taken care of soon by the dealer and was going to request to Ford to order a new LCM instead of the fix of splicing into existing wires which I'm not a big fan of this. Do you think this will be an option?

[RubberCtyRauder]

No, it won't. New LCM is no different than old one. Ford fix is to get out of making a new LCM. If you can be without your car for 2-3 days. Pull it and send to member fastblackmerc

[justbob]

I replaced all four relays in mine with the exact same ones back in like ‘09 and was told “it’ll fail again”.

LOL Still works perfect and already outlasted the originals by one and a half times.

Me thinks it was a bad run or bad solder..


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[fastblackmerc]

I replaced all four relays in mine with the exact same ones back in like ‘09 and was told “it’ll fail again”.

LOL Still works perfect and already outlasted the originals by one and a half times.

Me thinks it was a bad run or bad solder..


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Of the hundreds of LCMs I've reworked I've never seen bad solder joints. In fact, the hardest thing is getting the existing solder out of the circuit board.

I have seen moderate to severe heat marks on the circuit board around the relay for the headlights that I believe is related to the excessive heat build up because the relay is under sized (10A) for the current drawn by the headlights. I've also disassembled the OEM headlight relay, finding severely pitted and burned contacts.

The longer you use the headlights the more damage is done to the undersized relays and your LCM will fail gain.

[fastblackmerc]

Regarding this recall letter for 15S39, I was planning on getting this taken care of soon by the dealer and was going to request to Ford to order a new LCM instead of the fix of splicing into existing wires which I'm not a big fan of this. Do you think this will be an option?

I've asked the same thing of my local Ford dealer and according to the parts department there are no LCMs available.

I can repair your LCM for you. Comes with a life-of-the-vehicle warranty.

[justbob]

Of the hundreds of LCMs I've reworked I've never seen bad solder joints. In fact, the hardest thing is getting the existing solder out of the circuit board.

I have seen moderate to severe heat marks on the circuit board around the relay for the headlights that I believe is related to the excessive heat build up because the relay is under sized (10A) for the current drawn by the headlights. I've also disassembled the OEM headlight relay, finding severely pitted and burned contacts.

The longer you use the headlights the more damage is done to the undersized relays and your LCM will fail gain.

You said this a decade ago Jim. [emoji16]


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[TED73]

I can repair your LCM for you. Comes with a life-of-the-vehicle warranty.

Is the LCM easy to remove? To be honest, I haven't looked into this in detail.

[Mr. Man]

Is the LCM easy to remove? To be honest, I haven't looked into this in detail.If your of reasonable size and a bit bendy, yes.

[Invective]

If your of reasonable size and a bit bendy, yes.

LMAO! Aren't we all...back in high school/college...

[MyBlackBeasts]

Is the LCM easy to remove? To be honest, I haven't looked into this in detail.

Yes, very easy. Less than 5 minutes to remove.

[TED73]

HAHAHA............Thanks for the info. I will look into it hopefully soon.

[fastblackmerc]

The LCM is just above and in front the diagnostic OBDII connector (just to the right of the steering column). On the front of the LCM are two grey connectors, depress the release latches and pull the connectors out of the LCM. Remove the two 7mm screws that hold the LCM to the bracket. Release the latch securing the LCM to the bracket. Push the LCM towards the firewall as you rotate the front of the LCM towards the roof.Once the LCM clears the bracket, pull it down and you can release the last electrical connector.

To reinstall, do the same steps in reverse.

[Peace2Peep]

Hey Fastblackmerc,

I PM'ed you a couple of times. It's a bit of a strange request, but it's sincere!

Just checking!

Thanks,

Allen


The LCM is just above and in front the diagnostic OBDII connector (just to the right of the steering column). On the front of the LCM are two grey connectors, depress the release latches and pull the connectors out of the LCM. Remove the two 7mm screws that hold the LCM to the bracket. Release the latch securing the LCM to the bracket. Push the LCM towards the firewall as you rotate the front of the LCM towards the roof.Once the LCM clears the bracket, pull it down and you can release the last electrical connector.

To reinstall, do the same steps in reverse.

[Svashtar]

I’ve been an idiot for not getting this done during all the summer weather we’ve had while I’ve been also stuck working at home. My question is, what lights will and won’t work without the LCM? Headlights will be out obviously, but what about brake lights? IOW is the car drivable at all? No worries if not, just need to plan for it.

I’m going to follow Jim’s instructions and get it out and send to him this weekend. I just hope this will also fix my dead underbody lights, which haven’t worked in over a year. Thanks.


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[fastblackmerc]

I’ve been an idiot for not getting this done during all the summer weather we’ve had while I’ve been also stuck working at home. My question is, what lights will and won’t work without the LCM? Headlights will be out obviously, but what about brake lights? IOW is the car drivable at all? No worries if not, just need to plan for it.

I’m going to follow Jim’s instructions and get it out and send to him this weekend. I just hope this will also fix my dead underbody lights, which haven’t worked in over a year. Thanks.


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The only lights that WILL work are the brake lights. They do not go thru the LCM.

You will have NO, headlights, tail lights, running lights, turn signals or interior lights.

Replied to your PM.

[Svashtar]

why not just bring it to the dealer and let them do it for free ? Hell, I never got a notification from them regardless; first I've heard of this. I can't imagine any MM's are still under warranty in any case, so if they were fixing it for free they never notified me. I recall it coming up a few years ago, but would rather trust Jim with the work anyway.

[Svashtar]

The only lights that WILL work are the brake lights. They do not go thru the LCM.

You will have NO, headlights, tail lights, running lights, turn signals or interior lights.

Replied to your PM.

Got it, thanks very much. Good to know I could drive it if I had to, but will try and leave it parked for a while. Definitely easier to do that these days...

[Svashtar]

The LCM is just above and in front the diagnostic OBDII connector (just to the right of the steering column). On the front of the LCM are two grey connectors, depress the release latches and pull the connectors out of the LCM. Remove the two 7mm screws that hold the LCM to the bracket. Release the latch securing the LCM to the bracket. Push the LCM towards the firewall as you rotate the front of the LCM towards the roof.Once the LCM clears the bracket, pull it down and you can release the last electrical connector.

To reinstall, do the same steps in reverse.

Wow, what a PITA; no grey connectors here. One 7 mm screw. Had to remove the plastic cover over everything and pull it down to have access. Unclipped the LCM, but no room for it to go back more than 1”-2”. Won’t rotate much at all. Typical for me. Looks like the alarm guy made a real tangle under here which doesn’t help...

[Svashtar]

Guess I was too literal following the directions. I ended up just sliding it off the bracket to the left, turning the back to the right and pulling it down. All the other cabling in there wouldn’t allow me to go back or up much at all.

[Svashtar]

Things I’ve noticed driving the car without LCM: air bag light on, and air suspension compressor kicks in every 60-90 seconds. ? Please tell me those ARE related to removing the LCM?


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[fastblackmerc]

Things I’ve noticed driving the car without LCM: air bag light on, and air suspension compressor kicks in every 60-90 seconds. ? Please tell me those ARE related to removing the LCM?


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To my knowledge they are not related to the LCM missing. I may be wrong......

[Svashtar]

One would expect, the air bag light, the other no. My air bags and solenoids are almost brand new (Arnott). I suppose it could be the compressor. I’ll just have to watch it. The car has only been driven 1-2 times a week for months now.

I had to shove a heavy wiring harness cable tied to another back out of the way to get the LCM back and out, I suppose I could have screwed something up. By the way, I found a hanging wire (assume alarm related) under the dash that had like a little plastic movable plunger at the end? Odd looking, I just tucked it next to the fuse box.

I was blaming the alarm guy for the half-assed LCM install, because I had to go back in and redo / fix so much of his other work years ago, but it wasn’t him; the last person to touch it was Ford.

Anyway, the LCM is on its way to you now, thanks for fixing it up.


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[Svashtar]

Follow-up: got the rebuilt LCM back from Jim and reinstalled, and all good. Air bag light went off, and air ride compressor stopped running once a minute. No clue how those are related, probably something with the maze of alarm wiring under the dash. All my interior lights and clock / radio / temp displays are brighter than they have ever been. Appreciate the quality work!

My underbody lights haven't worked for a while, and neither does my interior light come on when you unlock the car, which I think is also a pre-existing condition, and may also be related to my alarm dying. It's 16 years old after all. It used to chirp when I locked and unlocked the car, and hasn't done that for a few months. I think the underbody lighting and interior light coming on and the alarm are all related.

I'll figure it out, but now I don't have to worry about the lights at night at least. Nothing like driving down the freeway at 75 at night and having the lights randomly shut off!

[fastblackmerc]

Follow-up: got the rebuilt LCM back from Jim and reinstalled, and all good. Air bag light went off, and air ride compressor stopped running once a minute. No clue how those are related, probably something with the maze of alarm wiring under the dash. All my interior lights and clock / radio / temp displays are brighter than they have ever been. Appreciate the quality work!

My underbody lights haven't worked for a while, and neither does my interior light come on when you unlock the car, which I think is also a pre-existing condition, and may also be related to my alarm dying. It's 16 years old after all. It used to chirp when I locked and unlocked the car, and hasn't done that for a few months. I think the underbody lighting and interior light coming on and the alarm are all related.

I'll figure it out, but now I don't have to worry about the lights at night at least. Nothing like driving down the freeway at 75 at night and having the lights randomly shut off!
Glad I could help out!