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E90/E91/E92/E93 (2006 - 2013)
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  #1  
Old 06-26-2009, 10:20 PM
noslodot noslodot is offline
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e90 Rear Foglight Mod - Detailed DIY w/ photos

Hi everyone. I thought I would start up a new thread to make searching easy.

There is no need to buy the European Switch to get your rear fog lights to work, unless you want to spend the $90 and you care about having the rear fog light logo on the button. If not, follow the steps below and you should have them working in a jiffy!

First, you want to take off the trim piece above the switch, it makes removing the switch much easier. Start on the side nearest the steering wheel (red arrow in 001.jpg) and please use something non-metallic so you don't wreck your trim. Be careful with the left side of the trim it's hard to get off - take it slow. Once it is off, it should look like 002.jpg.

003.jpg shows the blue holders where the pins go to grip the trim pieces - helpful to know where to pry.

Remove the electrical connector (004.jpg) by pressing down on the tab (arrow 1) and then flipping down the gray bar (arrow 2). Pull out the plug.

There are 4 tabs holding the switch into the trim. Press down on the tabs to release them (006.jpg) on both sides. Refer to 007.jpg.

Now remove the back of the switch housing by releasing the 6 tabs indicated by the arrows in 008.jpg. It comes straight off - refer to 010.jpg.

Once the back cover is off the switch housing, you'll see the circuit board (011.jpg). Grab onto the blue plastic (arrow 1) and slide it off the shaft (arrow 2).

Looking at the front of the circuit board, you can see the two nubs for the front fog lights on the top right and the two nubs for the rear fog lights on the bottom right. I'm pretty sure if someone was ambitious enough, they could make a split button that only depresses one of these nubs and you could turn on one of the lights instead of both. I'll let someone else try that.

See that white plastic piece in photo 012a.jpg? That is half the reason your US switch doesn't turn on the rear fog lights. There isn't one behind the rear fog light button to push the nubs on the circuit board. We'll fix that in a second.

You've got to get the bottom button out of the housing. It's held in by two tabs indicated by the red arrows in 013.jpg. From the outside edge of the button, move the tabs away in the direction of those arrows and pop the button out. This is much easier said/typed than done, but work at it carefully and you'll get it.

When the button is out, there will be four tabs located where the red circles are in 014.jpg. Cut these off with an X-acto knife or razor blade. Put the button back into the housing.

Now, if you've got a buddy who bought the European Switch, you could ask them if you can have the white plastic piece in their US Switch to put into yours. I wasn't that lucky, so I made my own substitute. I had a wire nut handy, and it was about the right size so I used that. Refer to 015.jpg - I cut the sides down to fit into the opening (arrow 1) and trimmed the top off so it was the right height. I determined the height by comparing it to my little white piece. Don't forget to add the nickel thickness as well (015b.jpg).

Place the white plastic piece back into the housing. Then insert the wire nut. (016.jpg)

Make sure the height of the nickel lines up with the height of the large area on the white piece (017.jpg) and you are set. Slide the circuit board back on the shaft and reverse all the other steps.

You need to turn on the front fog lights for the rear fog lights to work - either at the same time or front then rear. You should see the indicator lights for both in your dash display. Once the rear lights are on, you can turn off the front lights if you want and the rear lights will stay on.

Now you're good to go and you saved yourself $89.95 (assuming you've got a spare wire nut laying around!!)
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Last edited by noslodot; 06-27-2009 at 12:08 PM. Reason: Better clarification of the thread content.
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  #2  
Old 06-26-2009, 10:22 PM
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Innovative!! Very very nice DIY
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  #3  
Old 06-26-2009, 10:24 PM
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The nickel button...pictures! Now there's proof!!

Thanks for the very detailed instructions and pictures! Very well done!

You should charge 5 cents to view this hee hee
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Old 06-26-2009, 10:29 PM
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id be impressed if anyone acctually did this from those pctures
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Old 06-26-2009, 10:54 PM
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Quote:
Originally Posted by Re1nkE View Post
id be impressed if anyone acctually did this from those pctures
Just did it, works great . Instead of a nickel, I found that cutting up an old credit card to in the shape of a rectangle (with a small cutout just like the white plastic piece) works better for me.

For my car, at night with headlights on AUTO, I can turn just the rear fog lights on without turning on the front fog lights too, contrary to the OP's experience. My front and rear fog lights trigger independently now.
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Last edited by PCStuff; 06-26-2009 at 10:58 PM.
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  #6  
Old 06-26-2009, 10:56 PM
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Quote:
Originally Posted by Re1nkE View Post
id be impressed if anyone acctually did this from those pctures
You don't always just get to look at the pictures. Sometimes you actually have to read, too.
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  #7  
Old 06-26-2009, 11:46 PM
noslodot noslodot is offline
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Quote:
Originally Posted by PCStuff View Post
Just did it, works great . Instead of a nickel, I found that cutting up an old credit card to in the shape of a rectangle (with a small cutout just like the white plastic piece) works better for me.

Nice! That's a good idea.

For my car, at night with headlights on AUTO, I can turn just the rear fog lights on without turning on the front fog lights too, contrary to the OP's experience. My front and rear fog lights trigger independently now.
Cool! It might be different for different headlight settings, I'll check that out.
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  #8  
Old 06-27-2009, 05:22 AM
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Talking

BTW, thanks for posting the detailed pics! I was all ready to order the Euro light switch from the dealer but then decided that I can do this DIY and save some $$.
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  #9  
Old 06-27-2009, 05:33 AM
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That is one fine 'stealth' mod. Thanks for taking the time and posting the pics.
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  #10  
Old 06-27-2009, 06:50 AM
noslodot noslodot is offline
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Quote:
Originally Posted by PCStuff View Post
BTW, thanks for posting the detailed pics! I was all ready to order the Euro light switch from the dealer but then decided that I can do this DIY and save some $$.
Right on!! Glad you decided to try it.
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  #11  
Old 06-27-2009, 08:06 AM
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Absolutely stunning post, many thanks!
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Old 06-27-2009, 11:28 AM
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I want to thank Noslodot, CVS/pharmacy, and Dremel for making this mod possible, I now have rear fog lights! I used a wirenut and a CVS extracare card (instead of a nickel) and it works great.
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Old 06-28-2009, 06:05 PM
imfromcanada imfromcanada is offline
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Im curious. Where on bmws do they have REAR foglights?
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Old 06-28-2009, 07:05 PM
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Im curious. Where on bmws do they have REAR foglights?
The rear fogs are integrated in the rear lamp cluster.
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  #15  
Old 06-28-2009, 09:17 PM
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Good stuff, very cool; good to see some DIY's showing up on the e9x section.
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Old 06-28-2009, 09:26 PM
Big Vito Big Vito is offline
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will be doing this this week
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  #17  
Old 06-29-2009, 05:43 PM
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Quote:
Originally Posted by noslodot View Post
Hi everyone. I thought I would start up a new thread to make searching easy.

There is no need to buy the European Switch to get your rear fog lights to work, unless you want to spend the $90 and you care about having the rear fog light logo on the button. If not, follow the steps below and you should have them working in a jiffy!
First, let me compliment you on your efforts and the level of detail your provided in this thread. But, I would like to know how long your procedure takes. (BTW, I bought the Euro switch last year from Tischer for about $58. That, plus 15 minutes of my time got me hooked up).
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  #18  
Old 06-30-2009, 07:52 AM
noslodot noslodot is offline
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Quote:
Originally Posted by rich8566 View Post
First, let me compliment you on your efforts and the level of detail your provided in this thread. But, I would like to know how long your procedure takes. (BTW, I bought the Euro switch last year from Tischer for about $58. That, plus 15 minutes of my time got me hooked up).
The first time I did it, it took about 45 minutes. The hard part was figuring out how to get the button out of the housing and then actually getting it out to shave off the tabs. I would say the time is going to be variable depending upon how long it takes an individual to remove and disassemble the pieces.

P/N 61316932796 (which is the one I would need for my car) is listed at $102.60 right now on Tischer. Cool that you got yours for $58. But the point is with a little bit of time and some ingenuity, you can have rear fog lights without spending any money.
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Old 06-30-2009, 09:41 AM
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great diy, thanks for the information
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Old 06-30-2009, 04:38 PM
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Quote:
Originally Posted by rich8566 View Post
First, let me compliment you on your efforts and the level of detail your provided in this thread. But, I would like to know how long your procedure takes. (BTW, I bought the Euro switch last year from Tischer for about $58. That, plus 15 minutes of my time got me hooked up).
Took me about 45 minutes total. Would be able to do it a lot quicker if I needed to do it again, but on first try I was super careful and I had to run upstairs and log onto the DIY to see how to get the button out of the housing. Using the Dremel with a cut-off wheel save some time when rounding out and cutting down the wire nut.

If I had to do it again I would estimate about a twenty minute process from start to finish. (15 minutes to do the work plus 5 minutes for the super glue to dry)
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Old 07-02-2009, 03:44 PM
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Prices on the switch seem to have gone up again - quotes from $128 to $115 but they're still available on ebay for $59 if you want the switch. I don't sell them, I bought one because that's what I'm used to when I drive rental cars in Europe (the separate fog switches on Mercs, BMWs and Audis).
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Old 07-03-2009, 09:17 AM
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Very cool, very easy, just completed in about 20 minutes. So basically the rear fogs are the "hard brake" lights - never knew.
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  #23  
Old 07-03-2009, 09:32 AM
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Zooks527 Zooks527 is offline
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Great writeup. Spent 30 minutes or so doing this earlier today, using a wire nut, some foam padding and a credit card. As noted, the biggest trick is getting the button out..

Best $60 - $120 I've ever not spent. Works out as though you're paying yourself a net hourly rate of $100 - $200. Can't go wrong at that price.

As a side note, I can turn my rear fogs on by themselves, without turning the fronts on first.

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George
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Last edited by Zooks527; 07-03-2009 at 02:03 PM.
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  #24  
Old 07-04-2009, 08:36 AM
tturboleadfoot tturboleadfoot is offline
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I didn't know there were rear foglights. Can someone post a picture of them on and off? Thanks
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  #25  
Old 07-04-2009, 11:37 AM
zampag zampag is offline
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There's a pic here : http://www.e90post.com/forums/showthread.php?t=26545
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