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Old 01-24-2013, 09:21 PM   #1
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Join Date: Nov 2012
Location: Socal
Posts: 5
My Ride: 2005 330ci
Rain / Light Sensor Question

Hi All,

I bought my 05 330Ci last November. Love the car so far, but have noticed an interesting phenomena happening with my lights when in "auto" mode. When I start the car in the garage in morning the lights go on as expected. When I pull out of the garage the lights go off also as expected. Then if its a cloudy day the lights works perfectly as expected stay off while I'm light and turn on when they sense darkness. The issues is on bright sunny days I notice that lights switch on and stay on for no apparent reason. Could there be something wrong with the light sensor? Has this happened to anyone? I tried searching both here and Google and didn't find much.

All help appreciated.

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Old 01-25-2013, 12:41 AM   #2
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Join Date: Dec 2010
Location: Lexington
Posts: 254
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I've seen cars stop at a stop light under a tree and a few second later the lights turn on. I assume it's the shade tripping the light sensor. Maybe that's what's up with yours.

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Old 01-25-2013, 02:15 AM   #3
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Yeah that's expected but they are supposed turn off once out of the shade which they don't on bright sunny days, but work fine on overcast days.
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Old 01-25-2013, 09:12 AM   #4
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Join Date: May 2008
Location: NYC
Posts: 31,105
My Ride: '02 330i 6MT
Might have to replace the sensor, but personally I like to be in control of what goes on in the car so just turn on your lights manually when needed.
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