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My lights on my 07 CTS keep coming on in the middle of the night all by themselves has anybody had this problem
 

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2007 CTS 3.6 >129k miles
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539 Posts
I have not heard of this problem on a CTS but had a different car many years ago with a similar issue. After exploring various connections I found that the switch (turn signal lever) was worn and shorting out. Replacing it solved the problem.
 

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06 CTS Sport/Luxury package
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I wonder if it thinks the key has been removed from the ignition.
I know there is a setting in the radio. You can adjust it so that when you remove the key, the lights remain off.

As a technician, I would disable that feature and keep an eye on it. If they remain off for several nights. Then I would replace the ignition switch. If the headlights continues to randomly turn on, then the issue is else where.

KOT
 
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