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ska///235i's Avatar (DIY) One little piece needed to enable our USA rear fog lights
ska///235i
03-17-2007
(DIY) enable our USA rear fog lights for E90 & E92

I took my light switch apart and discover that our switch has the ability for rear fogs, but there's one little piece needed/missing to activate it.

The switch is very easy to take apart.....just a few clips on the...
  #308  
By wuchao1 on 03-23-2011, 08:29 PM
Hmm mine worked tho... I have a 06 325i with halogen headlight... And I changed it to the P90 projector from DEPO... But that shouldn't affect anything tho....
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  #309  
By matrix76 on 03-23-2011, 08:54 PM
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Quote:
Originally Posted by wuchao1 View Post
Hmm mine worked tho... I have a 06 325i with halogen headlight... And I changed it to the P90 projector from DEPO... But that shouldn't affect anything tho....
I think I have to code it into my car before it will work, looking into it.
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  #310  
By ska///235i on 03-23-2011, 09:00 PM
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there is absolutely no coding needed, should work on every e9x
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  #311  
By matrix76 on 03-23-2011, 10:43 PM
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Quote:
Originally Posted by ska325xi View Post
there is absolutely no coding needed, should work on every e9x
Well like I said, the dash does indicate it but that is it. There is another thread on the euro switch and people say that on the 09 E9x model this feature only worked if you have the xenon lights.

From a suppliers website;

This headlight swtich w/ rear fog light switch fits:
2006+ E90 3 Series Sedan including BMW 325i, 325xi, 330i & 330xi
2007+ E92 3 Series Coupe including BMW 328i, 328xi, 335i & 335xi
2007+ E93 3 Series Convertible including BMW 328i & 335i
2008+ E82/E88 1 Series including BMW 128i & 135i coupe & convertible
2008+ E9x M3 sedan, coupe & convertible
*** (All of the above cars must be equipped with Xenon/HID headlights, foglights, and rain sensor for this switch to be compatible).

http://www.turnermotorsport.com/p-18...-1-series.aspx

The switch mod was tested on my 09 e90 Halogen and it did not work.
Last edited by matrix76; 01-29-2012 at 04:09 PM.
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  #312  
By imajnazn23 on 03-23-2011, 11:14 PM
easiest mod ever.. I used a couple of lego pieces to duplicate the missing piece and it worked like a charm. Thanks for the write up.
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  #313  
By votoc on 03-24-2011, 11:38 AM
I did this mod this morning without issue. Thanks for the guide
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  #314  
By mr_milo on 03-29-2011, 07:47 PM
Just completed the mod, it was a piece of cake! Thx

By the way, my 2011 E93 had the white piece in there already so I just needed to cut the tabs and put it back together.
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  #315  
By mnice78 on 04-18-2011, 02:03 PM
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2011 e92 335

Just did this today, very straight forward. thanks for the guide!
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  #316  
By dmatre on 04-26-2011, 06:26 PM
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Just finished the mod, hardest part was getting the trim off. The left side was VERY tight & stubborn, and I was afraid of breaking it. Eventually, I was able to work it out, and after that it was very straightforward.

My '11 E90 had both white pieces, so all I had to do was to cut off the tabs.

I had read in the forums that the rear fog lights only worked if the frontfogs were on, but that is not correct - front and rear are completely independent, and they also work if the headlight switch is in AUTO if the headlights are on.

Thanks for the great info!!!
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  #317  
By donheller on 04-29-2011, 08:57 AM
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Talking

This was a cheap quick and easy mod! Love it! Thanks for this post and all the input. Had my 325i for years and JUST found this post.
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  #318  
By Likwid on 12-28-2011, 01:53 PM
I will try this tonight!
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  #319  
By matrix76 on 12-30-2011, 10:06 PM
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My '11 E90 had both white pieces as well, so all I had to do was to cut off the tabs. I completed the mod on my 2011 328xi and it is has w/xenon lights. I have the rear fog light indicator on the dash, but that is it.
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  #320  
By matrix76 on 12-30-2011, 10:11 PM
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Quote:
Originally Posted by dmatre View Post
Just finished the mod, hardest part was getting the trim off. The left side was VERY tight & stubborn, and I was afraid of breaking it. Eventually, I was able to work it out, and after that it was very straightforward.

My '11 E90 had both white pieces, so all I had to do was to cut off the tabs.

I had read in the forums that the rear fog lights only worked if the frontfogs were on, but that is not correct - front and rear are completely independent, and they also work if the headlight switch is in AUTO if the headlights are on.

Thanks for the great info!!!
Weird, I did not get the same results at all
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  #321  
By genx68 on 01-05-2012, 05:30 PM
I'm new to this forum and this is my first mod !
It took me about an hour. Works perfectly !
Many thanks for that guide !
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  #322  
By niteryder on 01-11-2012, 10:12 PM
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Great DIY. *Worked great with 3 Lego pieces as my 2008 328xi did not have the white piece.*

It was almost like the Legos were made for the mod. *Saved $100. **
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  #323  
By Dr Zoidberg on 01-29-2012, 03:55 PM
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Success! Taking off the dash parts were easy, Just work slow and it will start to pull forward/straight out.

Above all, use a very light touch when bending those clips around!

One question, Does anyone know if the same holds true for a 2009 E60 528i? I guess I could just take it apart and see..

thanks again
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  #324  
By GizmoPhoto on 01-31-2012, 11:41 AM
IF anyone would prefer for the fog light switch to light up and have the decal, I have an OEM swith for sale:

http://www.e90post.com/forums/showthread.php?t=641528
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  #325  
By matrix76 on 01-31-2012, 11:47 AM
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Quote:
Originally Posted by matrix76 View Post
Weird, I did not get the same results at all
UPDATE, turns out it did work I was working in the sun and did not see it,

Cheap free mod and easy to do, saves you the money for a switch you don't need.
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  #326  
By ibanatl on 05-04-2012, 10:19 AM
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Great write up

My first DIY! Thanks for the info. I posted pics of the rear fogs off (1st pic) and on (2nd pic)
Attached Images
  
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  #327  
By CrAzY ChInOz on 05-08-2012, 08:59 PM
if anyone is interested, im selling these authentic lego buttons...

http://www.e90post.com/forums/showth...highlight=lego
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  #328  
By Surly73 on 05-09-2012, 08:55 PM
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Just did this tonight in about 10 minutes - awesome. Trim and switch removal was easy with a set of plastic trim tools. My 02/2007 328i did not have the white piece so I had to fashion it.

I found the perfect pair of items to form the plunger.

An orange marette was used to form the shaft.



The narrow end fits perfectly into the backside of the switch cap. Don't press it in too hard or it will expand the switch cap and start to bind the action.

For the base which actually presses the switches I used a self-adhesive silicone bumper which was the perfect diameter to fit in the space available and depress both of the contacts on the PCB:



The self-adhesive nature holds it perfectly to the open end of the marrette/wire nut and allows it to be placed slightly off center which is required to fit in the housing.

I trimmed the tabs on the switch cap using a pair of small side cutters after using two small screwdrivers to release the cap from the switch unit body.



The action of the modded switch feels absolutely identical to the factory switch. My PCB did not have the LED required to illuminate a genuine rear fog switch cap but the SMD pads were there.

On my 02/2007 Canadian model the operation is as follows:

- with lights off, no fog lights can be turned on
- with parking lights on (plus DRLs for me) I can turn on the rear fogs if the front fogs are already on
- with full low beam lighting on (xenons for me) you can operate the front and rear fogs completely independently
- with full high beam lighting on (bi-xenons for me) both fogs continue to operate independently and remain illuminated. (Of course in real fog, the only time you should be using them, you wouldn't be running xenon high beams and expect to see anything)

Every vehicle I've had since 1993 switches off the fogs when the high beams are engaged, even one that had a two-lamp/dual filament system. I was a little surprised to find that the fogs continued to operate with high beams on. I don't know if halogen cars, or non-bi-xenon cars (if any exist) would work the same way since I believe it's against the rules to have more than 4 main bulbs illuminated.

I would love to be able to code it so that only one rear fog lamp illuminated but leaving the graduated braking lighting unaffected. North American drivers seem to be generally challenged enough without confusing rear fogs for brake lights.

I wonder if my dad's 2011 F10 535xi is built the same way....
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  #329  
By fasfrank on 05-10-2012, 01:19 PM
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what do they look like

Hey guys what are rear fogs lights anyway where are they or where do you install them never seen these.
Thank's


Alright found the answer. great mod to do.
Last edited by fasfrank; 05-30-2012 at 09:33 AM. Reason: found answer
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