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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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Old 05-16-2019, 08:22 AM
DFI-9 DFI-9 is offline
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List of common water leaks?

My first real project for my E39 is to make it waterproof, but I can't find a list of common water leaks...
I've read about doors and sunroof, but I assume there are others.
Current issues:
Water on the back floor Doors
Water getting into my LCM - ?
Having to start in neutral if in heavy rain - ?
Any advice for these issues would be appreciated, but I would love a list of everything I should look into when it comes to waterproofing. Thank you much!
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Old 05-16-2019, 10:12 AM
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540 M-Sport 540 M-Sport is offline
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Another source is water can leak through the tail light gaskets. Usually simply removing the tail lights, clean the back of the lights and the mating surface of the car, and carefully reinstall and snug up the mounting nuts, and all is good. In rare cases, you might have to replace the gaskets. One has to be careful not to overtighten the nuts, being set in plastic, you can break the studs out of the light.
540 M-Sport package (Canadian market), factory Bluetooth phone integration, factory M-Audio 10" dual voice coil subs, Homelink, Eibach front and rear anti-roll bars, M5 rear chassis braces, H&R 15mm wheel spacers, ST X (KW) coilovers, Strong Strut front upper stress bar, BMP strut tower reinforcement kit, Stop Tech ss brake lines, Akebono Euro Ceramic brake pads, oem Brembo and Zimmerman rotors, Dinan Stage 1 software, USA Spec Ipod/Iphone integration.
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Old 05-16-2019, 12:17 PM
540fan 540fan is offline
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Check sunroof drains and clear them of debris.

Had them plug up on a 745iL and water everywhere inside.
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