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7 Series - E65 / E66 (2002 - 2008)
Discussion of BMW's 4th generation E65/E66 7 Series flagship. The E65 generated much controversy, due to its radical styling and iDrive user difficulties. Nonetheless, the E65 broke records to become the best-selling 7-series iteration ever, especially after its 2005 facelift.

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Old 02-15-2014, 04:42 PM
UT4VIDA UT4VIDA is offline
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Location: Houston, Texas
Join Date: Jun 2013
Posts: 28
Mein Auto: 750i
Talking Right Turn Malfunction--fixed!!!!

Malfunction was intermittent at first and then automatic at start up. Been like that for months. Read and reread all the previous posts on this. Figured the LCM was toast. Bought and installed a new LCM last week, went back to intermittent--improvement!!! Dropped the bumper fascia today and was determined to find the problem. Opened the headlight and low and behold, a blue wire was hitting the metal bracket around the headlight housing. It was rubbed raw. Re-insulated wire and also a small portion of the bracket it was hitting. Fixed the problem and it looks like for good. Opened the left (driver) headlight assembly as well to check it. No problem there. Here's a picture to show where the wire is rubbing. This is the passenger (right) side headlight assembly. The assembly is upside down and I have removed the actual headlight. Pretty simple fix. If you just replace the LCM without finding the short, the malfunction will eventually come back. As you can tell from the pictures, all the wires are in bad shape. I re-insulated them as best I could.

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Old 02-15-2014, 06:38 PM
jcharris jcharris is offline
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Location: Valdosta, Georgia
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Mein Auto: 2002 745I
Great job and it looks like all of your wiring was cracked.

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Old 04-20-2014, 05:15 PM
Floydage Floydage is offline
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Location: San Jose, CA
Join Date: Apr 2013
Posts: 15
Mein Auto: 2006 750i
I have the same issue with the turn signal. Once you get the light assembly out is it hard to take the headlight apart? Are there screws that hold it together? What are the steps to get to the wire? Thanks!
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Old 04-22-2014, 02:59 AM
mik15 mik15 is offline
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Location: Europe, now - Abu Dhabi
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Mein Auto: '06 750Li
it is the heat that makes the wire insulation crack, the problem mostly occurs in the hot climates areas and it is worse on supercharged engines as they produce a whole lot more heat...
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Old 04-25-2014, 10:39 AM
UT4VIDA UT4VIDA is offline
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Location: Houston, Texas
Join Date: Jun 2013
Posts: 28
Mein Auto: 750i
@floydage--I had to remove my whole front fascia to get to the headlight assembly. Once the whole assembly is out, it's just a matter of opening the back of the headlight. It's held in place by a plastic clip. The bulb itself is held on by a plastic circular clip that is easy to remove. You'll see the wire as soon as you take off the back of the headlight opening.
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Old 03-21-2016, 08:07 AM
Darkwing5918 Darkwing5918 is offline
Location: Weaverville, NC
Join Date: Mar 2016
Posts: 2
Mein Auto: 2006 750i
Rapid flashing turn signal

Thank you UT4VIDA. Guess I'll drop the bumper tonight.
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