MFS Issue? - Dodge SRT Forum
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post #1 of 17 (permalink) Old 08-20-2011, 10:53 PM Thread Starter
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MFS Issue?

Hi, just tonight I was hanging out with some of my friends and I turned on my car to leave. After I turned the car on I twisted the MFS to turn on the headlights and the car just died. No power to anything, no lights, no nothing. I popped the hood and wiggled the terminals and they were solid.

I go back in the car and try it again and the car starts right up, headlights turn on without any drama and I'm on my way. This has happened a couple times before and I think the MFS was involved everytime in some way. Earlier that day I was getting off the highway and I turned my turn signal on and the car lost all power and then turned on again almost immediately.

I know I need to swap the switch because at times the fog lights switch on if I'm turning with the headlights on. So is the MFS the culprit by maybe grounding out or something? Or is this related to the ASD fuse/relay that I've been reading a little bit on...

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post #2 of 17 (permalink) Old 08-22-2011, 11:30 AM
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I bet it's the MFS.

Take off the steering column cover and remove/inspect the wiring connector that plugs into the left side of that MFS assembly.

I bet it's Melty(tm).

The MFS's are notorious in Jeeps, Neons and other DCX products.
At the very least they're common, so you should be able to try another one (even a base model) for testing purposes.


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post #3 of 17 (permalink) Old 08-22-2011, 12:52 PM
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The MFS is notorious for melting wires. This causes all types of crazy issues and symptoms. I have fixed two in the past years, once with a donor harness, and once with the repair kit they sell at the dealer.



Unhook the battery, take the MFS off and see if any terminals are touching, or melted. It would be wise to have a spare before you do it.

Basically what rosejm said.

Somewhere I have a picture of my melted MFS. I can't find it.

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post #4 of 17 (permalink) Old 08-22-2011, 01:20 PM
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Get ready for the Fire in the Dash, and also the burn smell with NO lights at all.
This is a $650.00 fix if the wiring is melted beyond where you can get to. I hate electrical and didn't trust my skills, so I let the stealership fix it. Was the best thing probably.

http://www.srtforums.com/forums/f24/...85/index2.html Post#18 = truth for stock vs. all others.

http://www.gnttype.org/techarea/turbo/intercooler.html

Also, Duster360 knows his $hit!
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post #5 of 17 (permalink) Old 08-22-2011, 01:23 PM Thread Starter
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Alright I got a new one from Autozone today and swapped it out. No more fog light flickering. The harness wasn't too messed up at all thankfully. We took it for a drive and all the power went out for a little bit and came back on. Taking a look at it, we think the paint on the new battery terminals was preventing it from getting a good connection. I did replace the ASD relay and that didn't change anything so I'm guessing that was not the issue. I will update on it later after going for another drive.

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post #6 of 17 (permalink) Old 08-22-2011, 01:48 PM
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Quote:
Originally Posted by Neezer View Post
Alright I got a new one from Autozone today and swapped it out. No more fog light flickering. The harness wasn't too messed up at all thankfully. We took it for a drive and all the power went out for a little bit and came back on. Taking a look at it, we think the paint on the new battery terminals was preventing it from getting a good connection. I did replace the ASD relay and that didn't change anything so I'm guessing that was not the issue. I will update on it later after going for another drive.
Just letting you know it might be a worthy investment to have an almost-permanent fix (never know). You'll have a year warranty as well--better than nothing, which takes out the guess-work.

http://www.srtforums.com/forums/f24/...85/index2.html Post#18 = truth for stock vs. all others.

http://www.gnttype.org/techarea/turbo/intercooler.html

Also, Duster360 knows his $hit!
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post #7 of 17 (permalink) Old 08-22-2011, 01:56 PM
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Are you saying what I think you are saying?

I know someone who needs his battery replaced every two years, right before the full warranty is up. Like clockwork.

20G Stage 3 on E85: New data:384 hp 411 tq

"Maybe I should just stick to bolt-ons." -Hitler

I don't really want to wrench anymore. I'd rather detail.
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post #8 of 17 (permalink) Old 08-25-2011, 06:24 PM Thread Starter
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So far so good. New terminal ring must have fixed it.

2005 Black SRT-4

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post #9 of 17 (permalink) Old 10-01-2011, 04:22 PM
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i have the same problem as well. I bought the connector and the repair kit, the connector has the black thing in the middle sticking out. How you put it in? lmk asap! thanks!

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post #10 of 17 (permalink) Old 10-05-2011, 08:15 PM
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You guys need to check the wiring harness that goes through the body for your lighting in the front where the intercooler is (driver side). Make sure the wires go over the intercooler not under it. The intercooler tends to sag a break the support brackets and then will crush and short out your wiring causing your MFS to melt/catch on fire.

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post #11 of 17 (permalink) Old 10-14-2011, 12:09 AM
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I didn't know they had a replacement at the dealer. I thought you had to buy the whole harness. I'm picking one of these up then. last I saw mine was crumbling in my hand.
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post #12 of 17 (permalink) Old 10-14-2011, 01:01 AM
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my fog lights have been flickering...i better dive in and fix it before i get some serious problems...
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post #13 of 17 (permalink) Old 01-28-2012, 11:59 AM
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i have been having a problem where no low beamsand fog wouldnt come onnafter a little bit of drving they wouldcome on, now i have no low beam or fogs at all just high beam, hopefully this will do it, i can just get the replacment at autozone or sumthing or only the dealer
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post #14 of 17 (permalink) Old 12-09-2012, 10:29 AM
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I just went through this nightmare. I wired everything meticulously, but my hazards and turn signals still did not work. I surrendered after several hours and took my baby to Pep Boys, where the tech told me that I forgot to move the flasher relay from the old MFS to the new one. Does anyone have a picture of that relay or any idea where it is located? The tech was too busy to show me or something.
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post #15 of 17 (permalink) Old 12-09-2012, 10:29 AM
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Also, everything works normally now. Guess that's important to mention.
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