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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 10-01-2019, 10:45 PM
mohamedrani mohamedrani is offline
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Mein Auto: 520i 1998
LCM schema

hey guys, i have a problem with the LCM, now both the high beams always working,
i found these two tutorials ,



https://www.car-auto-repair.com/how-...le-lcm-on-e39/

the only problem is they are showing the place of the transistor for the Right high beam. does anyone has any idea where is the one for the left high beam too, i don't wanna messing around all the transistors ))))
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  #2  
Old 10-02-2019, 05:58 AM
528iAut 528iAut is offline
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I already posted this but here it is again, look at answer 15.
https://xoutpost.com/bmw-sav-forums/...working-2.html
Ground yourself when working on this board, its sensitive to static charges, and make sure you get the right chips, I got mine via Ebay.
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E39 528i Steptronic 1996, Comfort seats, Rear sunshade, Focal amplifier and front speakers, Oxford Green.
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  #3  
Old 10-02-2019, 07:43 PM
mohamedrani mohamedrani is offline
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Quote:
Originally Posted by 528iAut View Post
I already posted this but here it is again, look at answer 15.
https://xoutpost.com/bmw-sav-forums/...working-2.html
Ground yourself when working on this board, its sensitive to static charges, and make sure you get the right chips, I got mine via Ebay.
thanks alot, it's even in Russian , you're a great help)))

i guess i should disassemble mine and see which chips i have on the board since i noticed that they are different from each car, the chips numbers i mean not the place of them ,
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Last edited by mohamedrani; 10-02-2019 at 07:52 PM.
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  #4  
Old 10-03-2019, 05:46 AM
528iAut 528iAut is offline
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Should be Infineon BTS426L1
There is another alternative which handles slightly higher voltages.
https://www.bimmerfest.com/forums/sh...d.php?t=209896
They are very cheap...
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  #5  
Old 10-08-2019, 06:32 AM
mohamedrani mohamedrani is offline
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Quote:
Originally Posted by 528iAut View Post
Should be Infineon BTS426L1
There is another alternative which handles slightly higher voltages.
https://www.bimmerfest.com/forums/sh...d.php?t=209896
They are very cheap...
i searched on eBay , and noticed that almost they all are shipped from china, so i cut the middle man i ordered two, hopefully they would work normal
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  #6  
Old 10-08-2019, 11:31 AM
edjack edjack is offline
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There are 5 (?) legs on the devices, so it takes some soldering skills, and a rather high-powered soldering iron to remove them.
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  #7  
Old 10-08-2019, 12:19 PM
528iAut 528iAut is offline
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Yes, be patient, ground yourself to the ground in an electrical outlet and it will be ok, if I can do it anyone can do it.
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  #8  
Old 10-08-2019, 01:00 PM
mohamedrani mohamedrani is offline
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Quote:
Originally Posted by edjack View Post
There are 5 (?) legs on the devices, so it takes some soldering skills, and a rather high-powered soldering iron to remove them.
yup 5 legs , BTS426L1 BTS426 TO-220-5 IC chip


Quote:
Originally Posted by 528iAut View Post
Yes, be patient, ground yourself to the ground in an electrical outlet and it will be ok, if I can do it anyone can do it.
yeah, i bought the tools, waiting for the chips and will get to work
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Last edited by mohamedrani; 10-08-2019 at 01:03 PM. Reason: attached a photo
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