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Does the Rx8 have an auto headlight On/Off?

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Old 12-01-2010, 08:24 PM
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Does the Rx8 have an auto headlight On/Off?

My lights dont turn off or on automatically, yet there is what appears to be an ambient light sensor on the right of the dash.

So whats the deal? Are they supposed to turn off automatically when you turn the car off? what about turn itself on when it starts geting dark?

If so how would I fix that?
Old 12-01-2010, 08:27 PM
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no, it does not.
easy fix: turn off the lights before exiting the vehicle.


p.s. I highly recommend reading the owner's manual.
Old 12-01-2010, 08:27 PM
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huh?? where is this so called "sensor"?

Last edited by RX8Soldier; 12-01-2010 at 08:30 PM.
Old 12-01-2010, 11:36 PM
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On the right side. I attached a picture. Its the little penny size circle and you can see the reflection on the winshield


Ok so if that isnt it, then what is that?

And has anyone done an ambient light sensor headlight mod then?
Attached Thumbnails Does the Rx8 have an auto headlight On/Off?-sensor.jpg  
Old 12-01-2010, 11:45 PM
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i have honestly never even noticed that! hey, you learn something new every day
Old 12-01-2010, 11:45 PM
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They are not automatic, but its pretty easy not to forget to cut them on and off... The backlights for the radio/ac controls and all don't light up unless the headlights are on, so if it is dark outside it is pretty easy to remember to turn your lights on since you can't see any of your controls without them

And the car beeps at you if you cut the car off and open the door with the lights still on, so its pretty hard to forget to cut them off...

Also, if you have your gauge (rpm gauge etc.) lights set to be red instead of white, they only turn red when the headlights are on.... So that can help you notice if you don't have your lights turned on... Just get in a habit of always checking them and pretty soon you won't even have to think about it.
Old 12-02-2010, 12:42 AM
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Originally Posted by lateralus
They are not automatic, but its pretty easy not to forget to cut them on and off... The backlights for the radio/ac controls and all don't light up unless the headlights are on, so if it is dark outside it is pretty easy to remember to turn your lights on since you can't see any of your controls without them

And the car beeps at you if you cut the car off and open the door with the lights still on, so its pretty hard to forget to cut them off...

Also, if you have your gauge (rpm gauge etc.) lights set to be red instead of white, they only turn red when the headlights are on.... So that can help you notice if you don't have your lights turned on... Just get in a habit of always checking them and pretty soon you won't even have to think about it.

I realize that... its not hard to do, just kind of a nuisance coming from a car and street bike that do it for you, so Im not really in the habit.

Hmmm maybe Ill write up a diy on how to wire one in...
Old 12-02-2010, 12:49 AM
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that's a temp sensor btw
Old 12-02-2010, 12:54 AM
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^ no kidding? is that the temp sensor for the ambient temp reading you get on the LCD display?
Old 12-02-2010, 01:16 AM
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Originally Posted by Cf05
^ no kidding? is that the temp sensor for the ambient temp reading you get on the LCD display?
No. That one is located on the front crash bar behind the bumper cover, drivers side.
Old 12-02-2010, 06:26 AM
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I figured that wasn't it but then again I don't really know why there would be one inside the climate control has nothing to do with temp.
Old 12-02-2010, 06:54 AM
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You must be really lazy if turning the lights on and off is a matter of concern!
Old 12-02-2010, 06:58 AM
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Originally Posted by bren5279
And has anyone done an ambient light sensor headlight mod then?
yes, auto lights both tied to ignition and tied to optical sensor have been done and documented on the forum.

Originally Posted by bren5279
Hmmm maybe Ill write up a diy on how to wire one in...
i wouldnt waste the time. its already here to tie the lights into ignition**... and those with the electrical skills to put together the optical circuit for light sensing can do it with no help, those who arent that skilled, wont be able to do it with the best of instruction

** though it isnt done entirely properly and will result in short HID life.

Last edited by paulmasoner; 12-02-2010 at 07:54 AM.
Old 12-02-2010, 10:12 AM
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Good point. Thanks
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