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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 05-07-2007, 01:40 PM   #1
gTkidrokin330
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Tranny failure due to Stereo or Lighting?

okay,

So something happened to my transmission, got the tranny failure signal and service engine soon light coming on so i took my car to rallye today.

They called me back and said that my subwoofer and amp, along with HID fogs are the reason that my tranny is failing. There is no way this can be true because ive had the system for a while and i had no problems until the other day. Is there anychance that my mods are the cause of my tranny problem?

They wont cover anything under warranty as of right now. They said i have to take all my mods out and then they will fix it. That means removing the sub, amp, wiring, hid fogs, led signals, any wiring harness's. anything electrical and then they will fix it.

i think this is bull.
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Old 05-07-2007, 01:46 PM   #2
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no that is one pure BS for me.
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Old 05-07-2007, 01:47 PM   #3
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How the fcuk can those affect the tranny?! Bass so hard that it broke parts?! Sounds like a load of BS to me.
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Old 05-07-2007, 01:49 PM   #4
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BS!!! they have to prove it, but if you dont want to deal with that **** then take all your stuff out.
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Old 05-07-2007, 01:51 PM   #5
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they said that its messing up the computer that makes the transmission work properly. Whats gettin me mad is that they told me it will be 50 deductible and now i go to pick the car up, they made me pay 110.
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Old 05-07-2007, 01:57 PM   #6
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next time they'l say that the new steering wheel is causing a differential problem, or ur e46fanatic sticker is the reason ur both rear schoks are gone, or maye ur tint windows are the problem for the tranny also.
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Old 05-07-2007, 02:24 PM   #7
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Hahaha biggest load of **** ever...

Another dealer tried this awhile back with another member. It is just so they can get out of paying for it.

When it's under warranty I love how nothing is wrong with your car, but as soon as it is up, everything is.
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Old 05-07-2007, 02:43 PM   #8
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It's TRUE some aftermarket stereos put out enough EMF to disrupt the trans control computer, I have had this happen before!! Customer removed stereo stuff and problem goes away, I have Evan seen it take years to show up, you can try better grounding or filtering, however what they are saying has merit. Any tranny issue the dealer must call BMW first and the first thing they ask is if it has an aftermarket stereo!


This does not mean that all stereos affect the trans however I have seen it happen!
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Old 05-07-2007, 02:51 PM   #9
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Good luck man, Try a different dealer see what they say. Otherwise try disconncting the amps and see if that makes any difference, If it does then you know what the cause is. I assume the $110 was a diagnostic fee so I doubt you will get them to drop that.

Is it 5 speed or auto? I assume auto as that would have software and be directly connected to the comuputer, what problems were you having with it that caused the light?
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Old 05-07-2007, 03:17 PM   #10
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its a steptronic and ive been hearing a metal clinkin noise under the car for a while now...and recently the car gave me the failure signal and the car wouldnt go past 2nd gear.....they told me run the car for a week with the stereo disconnected...see what happens..if it still happens they will fix it under warranty.

Im gonna cry if this is the truth because i have JL speakers and amps waiting to be installed.
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Old 05-07-2007, 03:59 PM   #11
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I am not at all familiar with the auto's but if you are hearing metal noises, to me that indicates mechanical issues not software/computer issues. Take it to another dealer if possibly or an independent shop to get their opinions.

But no harm in running it without the amps hooked up just to eliminate that as a possibility.
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Old 05-07-2007, 04:17 PM   #12
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I would just take it out untill this is resolved BMW may try to argue(remember they have better lawyers) that this caused the mech. faluire from the software getting corrupt. IMO the deaerl is doing you a favor by advising you take that stuff off and bring it back, if they told BMW they would have vioded the warrenty right then and there, then you realy would be sol.
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Old 05-07-2007, 04:59 PM   #13
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Quote:
Originally Posted by jbeurotech View Post
It's TRUE some aftermarket stereos put out enough EMF to disrupt the trans control computer, I have had this happen before!! Customer removed stereo stuff and problem goes away, I have Evan seen it take years to show up, you can try better grounding or filtering, however what they are saying has merit. Any tranny issue the dealer must call BMW first and the first thing they ask is if it has an aftermarket stereo!


This does not mean that all stereos affect the trans however I have seen it happen!
This is 100% true for the e46's! I have heard stories on bimmerforums about guys who disconnected their aftermarket stereo's and their tranny's worked again! It is a voltage issue that is created by using some non-factory sound systems.
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Old 05-07-2007, 05:25 PM   #14
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well...this is the deal. Had my installer contact his cousin, also mine which is the head mechanic at rallye, or one of the highest and yep. Any type of aftermarket entertainment put into 3-series will/may cause tranny failure. Its some wierd signal put out involving the head unit. Changing out the headunit may or maynot solve the problem. This sucks so much because i have equipment sitting here waiting to be installed and now it may never go in.

Is there absolutely anything i can do that will allow me to have ICE and have my tranny work?

AND the wierd clinking sound, they said they didnt know what i was talkin about, they heard nothing. I went back and had the guy sit in the car wtih me, and all of a sudden he heard it. Turns out something in the front left wheel/rotor/caliper is clinking. They want another $112 diagnositc and what ever it costs to fix it since that stuff isnt covered under warranty. Any idea what this sound may be?
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Old 05-07-2007, 05:30 PM   #15
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We're sorry we can't fix your car because you didn't use an approved air freshener
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Old 05-07-2007, 05:36 PM   #16
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We're sorry we can't fix your car because you didn't use an approved air freshener
its been proven to be a legitimate cause (regarding the trans/stereo). You're a little too late.

Last edited by ez12a; 05-07-2007 at 05:39 PM.
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Old 05-07-2007, 05:53 PM   #17
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Hahaha biggest load of **** ever...

When it's under warranty I love how nothing is wrong with your car, but as soon as it is up, everything is.
Yup.
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Old 05-07-2007, 07:38 PM   #18
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dealer needs to prove a mod has caused the failure, otherwise they are required to service it.
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Old 05-07-2007, 07:44 PM   #19
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I've heard about the aftermarket audio thing too... but I think they might be jerking your chain when they talk about lighting things being a cause. That part would make me a little skeptical...idk

One time at the dealer they blamed my DDE's for a battery draw and I went through every scenario and proved to my dickhead service guy that it wasn't the cause. One of the techs was cracking up because the seasoned veteran service manager got pwned by a 17 year old kid.
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Old 05-07-2007, 09:17 PM   #20
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its been proven to be a legitimate cause (regarding the trans/stereo). You're a little too late.
yea I read that too, but it still seems a lil far fetched to me
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