E-Class (W212) 2010 - 2016: E 350, E 550
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Auto lights sensor location

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Old Aug 27, 2021 | 11:47 AM
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2010 E350 Luxury Sedan, Engine 272 (V6)
Auto lights sensor location

On early 2010 E-350 models, where is the automatic lights sensor located? Not sure this is my problem, but curious.
Leave switch in Auto position. I park in garage so they come on automatically whenever I turn the car on, but sometimes they never go out even in bright sunlight. If I park the car and turn it off for a while and then start again they will not come on. I can turn them Off (see below), but then once I change back to Auto they often come on even in sunlight. Sometimes they won't go off even if in Off position.

My car has the older type light switch with an Off, Auto, Parking, and Lights. I contacted the dealer and M-B a couple years ago about another problem I was having with lights and M-B refused to do anything - past the seven year warranty. The dealer service manager finally agreed that since I had reported malfunctions during the seven year period, he would replace the light switch. BUT with the understanding that if anything remotely connected with the switch, lights or installation happened, they would NOT fix it. An offer I could refuse.
Thanks.
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Old Aug 27, 2021 | 12:16 PM
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'11 E350, '11 E550, '98 M3, '95 E320
https://mbworld.org/forums/e-class-w...low-beams.html
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Old Aug 27, 2021 | 01:21 PM
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Originally Posted by bmwpowere36m3
Thanks. After scrolling through a lot of responses came upon post #19 where my question was well answered by Konigstiger ( No surprise there). So, both rain and light sensors are in the unit behind the rear view mirror. I do make an effort to make sure I clean that outside area of windshield frequently.

So, brings up the question. What is the small dome on the center of dashboard for?
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Old Aug 27, 2021 | 01:29 PM
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Originally Posted by El Cid
So, brings up the question. What is the small dome on the center of dashboard for?
Sun sensor for climate control.
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Old Aug 27, 2021 | 01:41 PM
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Originally Posted by konigstiger
Sun sensor for climate control.
Thanks. How does it work compared to sensors for temperature?
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Old Aug 27, 2021 | 01:59 PM
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Old Aug 27, 2021 | 03:41 PM
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Originally Posted by konigstiger
Thank You! Have added this to my file of information on my car not readily available.
It's probably me and/or advancing age, but I noticed a couple of years ago that the system seems to shoot out a lot more cool air from the top vents than in the past, or appears to. Especially in Fall and Spring. I generally now run them about 3/4 open. Then again, I have always wanted more heat or cool on my legs than face and chest anyway. Operate it on Auto about 98% of the time.
Thanks again!

Last edited by El Cid; Aug 27, 2021 at 03:45 PM.
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