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  #1  
Old 10-06-2006, 12:32 AM
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Exclamation Need help with facelifted tail lights!

I just installed my facelifted taillights and i found some problems. When my car is running, the left side has both the top red light and bottom red light on. And when i brake, the bottom red light shines brighter. But on the right side tail light, when the car is running, only the top red light is lit, and when i brake the bottom one is lit. What might be the problem? And does anyone know the solution? Thanks!
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Old 10-06-2006, 05:25 AM
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The bulb in the bottom light is a twin fillament type. The fillament for the tail light (5watts) has blown so when you put your foot on the brake the brake light fillament (21watt) glows....OR.... you have put a single fillament bulb in the bottom light (brake light hole) and this only illuminates when you brake.
See how this goes...compare the bottom bulb with the one in the other light cluster.
Cheers
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  #3  
Old 10-07-2006, 01:00 PM
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Yea i just realized that the bulb was out on one side. Does anyone know the bulb type for the brake light. All i know is it's a dual filament 5/21 bulb. I bought my lights from ebay and each side came with different kind of bulbs.Thanks!
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Old 06-30-2010, 05:29 PM
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Quote:
Originally Posted by x5fromOz View Post
The bulb in the bottom light is a twin fillament type. The fillament for the tail light (5watts) has blown so when you put your foot on the brake the brake light fillament (21watt) glows....OR.... you have put a single fillament bulb in the bottom light (brake light hole) and this only illuminates when you brake.
See how this goes...compare the bottom bulb with the one in the other light cluster.
Cheers
Sorry to resurrect an old thread,but still better than start "yet" another one and it is relevant to the topic and my recent experience.

Today ,I installed 2005 tail lights on my 2003 X5,and again notice that altough the dual filament bulb is in the middle, it is in fact the single filament bulb on the bottom that works as a side & brake light.Ok,I did my search here and it is said that the dual filament light is for adaptive braking,but its still weird why the bottom bulb only has 1 filament when in other cars it generally has 2!
I decided to experiment and swapped the middle and bottom bulbs and now the twin filament light in the bottom connection works fine as a side light and brake light!Any reason why I cannot leave like this?
I also experimented fitting 2 single filament bulbs(middle & bottom) and have no idea why the bottom connector plate got very ,very hot!(impossible to touch!)..all cool again once i fitted the dual filament

The main reason I am making this post is because there is a contradiction on the oem position for the dual filament bulb!Here X5fromoz says its on the bottom connector....but here http://www.xoutpost.com/bmw-sav-foru...-question.html its in the middle ,as was mine!


Thanks for the input
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Old 10-07-2006, 01:13 PM
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Facelifted X5's have what is know as the celis crystal jewel tail lights. But remember the new tail lights have whats know as brake force lights which means one section of the tail light, lights up under normal braking but, in emergency braking another section lights up also!! Here is what it says and a pic from the brochure.

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Old 10-07-2006, 01:20 PM
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Yeah i noticed that. But the only reason my lights are wacko is cause one of the dual filaments brake bulbs had blown out. So it only lit when i was braking and not when it was just running. I just need to know the brake light bulb number for a dual filamtent 5/21 bulb.
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  #7  
Old 10-07-2006, 01:44 PM
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Hi, can somebosy post a side by side comparison of the new and old tailights? I really can't differentiate them. Also, someone told me that I should have the Brake force tailights. But is there a way to test if it really works? I tried stepping lightly and full force on the brakes while the car is stationary but my friend told me that it's just the same.
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Old 10-07-2006, 02:44 PM
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Quote:
Originally Posted by XXX55
Hi, can somebosy post a side by side comparison of the new and old tailights? I really can't differentiate them.

Have a look at this thread it may help??

http://www.xoutpost.com/x5-e53-forum/...-pictures.html
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Old 10-07-2006, 11:23 PM
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i just checked the link you gave me but I really can't tell the difference aside from the clear signal light markers hehe .

Sudesh, do you know if there's any way to test my brake sensitive tailights while the car is stationary? Thanks
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  #10  
Old 10-08-2006, 08:50 AM
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I'm not sure other than you would need someone in your X5 and someone at the rear, then just press hard on the brake pedal to see if the tailights work like in the pic I posted above!! I think the difference in the facelift tailights compared to the prefacelift is that they are just a bit clearer/sharper look.
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