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I know this is an old post but figured I'd comment in hopes of helping others.
I also have spent a lot of time trying to figure out this same problem. Finally solved it yesterday. Turned out being the body control module.
 

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I know this is an old post but figured I'd comment in hopes of helping others.
I also have spent a lot of time trying to figure out this same problem. Finally solved it yesterday. Turned out being the body control module.
That is very vague body control model (BCM).

More details?

First posts normally go in introductions else you could get a free fix and we never see you again!!!

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This is a new forum layout which is owned by a company last year that doesn't give a dam with loads of bugs which have been reported in the new thread. There is no TDI Wiki at the moment or original similes which they refuse to install. It doesn't show the car spec/location.

Add your car specs to your signature that will show on every post you make.

Car spec now shows not for all members.

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This has been talked about many times.

I've made a poll which no one has posted in, there are a few votes and comments.

Do you like the new forum features?

Wiki pages have been restored as of 7th December, I asked where is the link it should be on top of the main forum.
 

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I have a similar issue in my 06. On particularly hot days (such as this afternoon) my turn signals won't work. I'll get the "quick flash" and the "light burnt out" dummy light. Then after a while, they work.

I've been having this problem for about a year now, but have been too lazy (busy ? ) to pull out the volmeter and really troubleshoot it. Plus, it's "fixed itself" by the time I get home, so I've never actually even been able to jump out and see if it the bulbs really aren't working or not.

I suspect a bad solder joint, based on an experience I had with an old Honda. On that car, on particularly hot days it wouldn't start. Like literally turn the key and nothing ( no cranking) would happen. But leave the doors open for a few minutes, let the car air out, and it would start. Weird, right ? Turns out the main relay had bad solder joints, and over time the joints developed microscopic cracks. When it got really hot inside (like 100+ degrees) they would expand to the point where the cracks were large enough to not pass electricity. FORTUNATELY this problem was pretty well documented online and the solution was simple: remove the pdb, desolder and resolder everything (with better solder joints :) I did that, the problem never recurred.

The symptoms I'm experiencing are so similar - intermittent only on super hot days, self fixing (presumably because the AC is running) - that I suspect a similar issue.

White is The pdb located?
 
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