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Go Back   E46Fanatics > Tuning & Tech > Lighting Forum

Lighting Forum
Angel Eyes, DDEs, lighted rings, Clear Turn Signals, LEDs, Xenon, HID, or Bi-Xenon. If it lights up and you want to discuss it, post here!

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Old 12-25-2008, 07:36 PM   #1
CRXnut
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Where are the sensors for automatic headlights ?

Hi guys and girls. This is my first post and yes, I tried searching. Only partially usefull info can be found here - http://forum.e46fanatics.com/showthread.php?t=243778

Anyway, here is what I want to do: block the light sensor so my lights are always on. I believe there are two sensors, does anoyone know exact location ?

Thanks
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Old 12-26-2008, 01:02 AM   #2
Steve@ASPTuning
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So you want your low beams always on right? The outter ones.

If you have the Auto Light Sensor Module the thingy on the windsheild basically you have to make it so no light get's through that module. Tricking it into thinking its "night time" because no light gets through.

Another one is on the LCM its a little diode that detects light also.

Now I have heard from unconfirmed posts saying the little hole on the back of your rear view mirror is also a light sensor... but I don't think so.

Hope tha helps.

Steve
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Old 12-26-2008, 09:49 PM   #3
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why don't you just switch it all the way to the right? it would be easier. and turn it off when you get out
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Old 12-27-2008, 12:34 AM   #4
CRXnut
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Originally Posted by sillieidiot View Post
why don't you just switch it all the way to the right? it would be easier. and turn it off when you get out
You just answered your own question. I would have to turn it off an on myself. Trying to find an easy way for the car to do it for me.

The user manual mentions two sensor, I know one is under the mirror on the windshield - that one is going to be difficult to block. Hoping to find the other one.
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Old 12-27-2008, 01:55 AM   #5
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actually i didn't. you never said in your original post that you wanted the car to do it for you. you just said you wanted them on all the time. there is a big difference.

anyhow, the other sensor should be on the corner of the dash on the driver's side. don't remember exactly though. also, doing this will greatly shorten the life of your xenon components and your battery.
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Old 12-27-2008, 02:19 PM   #6
Steve@ASPTuning
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Originally Posted by sillieidiot View Post
actually i didn't. you never said in your original post that you wanted the car to do it for you. you just said you wanted them on all the time. there is a big difference.

anyhow, the other sensor should be on the corner of the dash on the driver's side. don't remember exactly though. also, doing this will greatly shorten the life of your xenon components and your battery.
I think your talking about the one on the LCM. There's a little diode (crystal) like thing.
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Old 12-29-2008, 03:21 PM   #7
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The dealer can lower or increase the sensitivity of the autolights. I've got it done to my parents car one time. My lights were turning on in very short tunnels so we told them and they supposedly changed the sensitivity. So maybe if you go to the dealer and ask them to change it so they are always on it might work.
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Old 01-01-2009, 06:59 PM   #8
CRXnut
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not a bad idea but I'm still looking for a solution I can do myself (free)
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Old 01-01-2009, 07:06 PM   #9
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If you turn the LCM dial to the right (low-beam symbol, not "A"), the low beams would be on and when you turn off the car and take the keys out of the ignition, all the lights will turn off. No need to turn the dial back to "0" every time.
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Old 01-02-2009, 02:51 AM   #10
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Quote:
Originally Posted by rorschach View Post
If you turn the LCM dial to the right (low-beam symbol, not "A"), the low beams would be on and when you turn off the car and take the keys out of the ignition, all the lights will turn off. No need to turn the dial back to "0" every time.
the parking lights stay on though.
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Old 01-02-2009, 07:34 AM   #11
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the parking lights stay on though.
You mean the turn signals stay lit up? Ok, didn't know that about US cars, here in Europe we have separate bulbs for parking lights and they turn off with the headlights when I take the key out.
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