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      01-16-2026, 09:58 AM   #3893
musclesmarinara75
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Drives: 2013 BMW F10 N55 535i XDrive
Join Date: Apr 2021
Location: Bayonne, NJ

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2013 535 XDrive  [9.75]
Module

Quote:
Originally Posted by ctcarbonari View Post
1/4" window weather stripping from Lowes. And yes, I had to mash the cap back down and twist.

Long story short: My condensation issues came back after 2-3 weeks. Twice I removed the headlamp assembly entirely, dried completely, and went at every possible mating point I could find with silicone. Both times it seemed to work after reassembly; however, again, after 2-3 weeks the condensation would return and gradually get worse.

Last week I installed a new headlight assembly. Condensation issue fixed. However, I have to go back at it one more time and install a new Xenon Headlight Control module as I let the issue persist for too long and fried the board. (Low Beams, High Beams, turn signals work. Adaptive lighting and DRLs do not)

Don't do what I did and wait too long, that board sits at the bottom of the headlight assembly and is very susceptible to the moisture.
I have an extra module if u want purchase it, I have a 2013 535 pre LCI do not know if they are all compatible
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