Where Is The Auto Lights Sensor ? | Volkswagen Scirocco Forum

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ZephyR Z Does anyone know where the sensor is that turns on / off the headlights in auto mode ? Drove to work this morning and home again this afternoon in very bright sunlight, low down right in my face for most of the time - but the auto lights were still on all of the time, both ways. How dark does it have to be ? :roll: Just wondering whether I've got some muck on the sensor fooling it in to thinking it was dark. #1 · Oct 8, 2009 Does anyone know where the sensor is that turns on / off the headlights in auto mode ? Drove to work this morning and home again this afternoon in very bright sunlight, low down right in my face for most of the time - but the auto lights were still on all of the time, both ways. How dark does it have to be ? :roll: Just wondering whether I've got some muck on the sensor fooling it in to thinking it was dark. Sort by Oldest first Oldest first Newest first Most reactions #2 · Oct 8, 2009 I was told it is one of the two sensors in the mirror attachement point to the windscreen. You can see both the rain and light sensors inside the black bordered square from the outside side of the screen. C. #3 · Oct 9, 2009 I have the same issue on my car bright sunshine or even decent day light and the headlights (not DRL which are turned off) are on. I know that the headlights come on automatically if the windscreen wipers are operating for more than a few seconds but no wipers operating today. Sensor area clean on my car as I had cleaned the windscreen the night before. The sensitivity setting for auto headlights appears to be very high compared to other cars I have driven - I did wonder if it was some consequence of turning off the DRLs. Anyone else have this issue or could it be a faulty sensor on some cars? #4 · Oct 9, 2009 Nope, mines very sensitive too. And my DRL's are on, not that that would have anything to do with it anyway. My oldmans A3 has auto lights and they are no where as near as sensitive, he also has DRL's. I noticed going up the road the other day in the sunshine that my headlights were on, and it wasnt raining. I have a light sensor somewhere that I had on an old camera, I'm going to experiment with that and see what light level the autolight on the Roc comes on at compared to the A3, just out of interest. Alan #5 · Oct 9, 2009

scottyroc said:

alanstead said: Nope, mines very sensitive too. And my DRL's are on, not that that would have anything to do with it anyway. My oldmans A3 has auto lights and they are no where as near as sensitive, he also has DRL's. I noticed going up the road the other day in the sunshine that my headlights were on, and it wasnt raining. I have a light sensor somewhere that I had on an old camera, I'm going to experiment with that and see what light level the autolight on the Roc comes on at compared to the A3, just out of interest. Alan Click to expand...

:lol: that would be interesting to know.. i find this an issue but also was the same in my mk5 golf...the seem to be on in sunlight and darkness yet off in dull raining light conditions... :? Click to expand...

Also had the same problem on Mk5 Golf, took it to the dealer who adjusted the sensor, didn't make much difference, then had another sensor fitted, again didn't make much difference, they're just basically a pain. Seems to be less sensitive on the Scirocco (thank god). If memory serves me right the dealer said there were two types of sensor on the Mk5 Golf. I do know from experience that when handled they can be easily damaged, I needed a front windscreen replaced and needed another sensor fitted when the new screen went in. #6 · Oct 9, 2009 Mine are fine on the Golf. WIll be interested to see what the rocs like when it arrives. #7 · Oct 9, 2009

DGOT said: I have the same issue on my car bright sunshine or even decent day light and the headlights (not DRL which are turned off) are on. I know that the headlights come on automatically if the windscreen wipers are operating for more than a few seconds but no wipers operating today. Sensor area clean on my car as I had cleaned the windscreen the night before. The sensitivity setting for auto headlights appears to be very high compared to other cars I have driven - I did wonder if it was some consequence of turning off the DRLs. Anyone else have this issue or could it be a faulty sensor on some cars? Click to expand...

Same on the Roc and two Passats. Seems particularly prone to switching the lights on when it is a bright sunny winter's day so the sun is fairly low in the (blue) sky #8 · Oct 9, 2009 It was a bright sunny morning when I noticed this, yet on previous greyer mornings the lights did not come on. I wonder whether its anything to do with the intense contrasts produced by a bright sun low in the sky. #9 · Oct 9, 2009 Yep, i can remember having this with my beemer. The manual said the light sensor could be triggered by low level sunlight. Maybe it casts a shadow on the sensor or something?? #10 · Oct 9, 2009 They come on during the day due to the low sun giving shallow angle of light hitting sensor. Get this asked a lot during this time of year. Also vast contrast diffence in shadows doesn't help. Hope this helps. #11 · Oct 9, 2009 Right thanks for that - I think that explains it. :thumbup: #12 · Oct 9, 2009 Nice one george, think i read something like that but you explained it better :thumbup: #13 · Oct 11, 2009 Lights also come on when you travel over 90MPH guys and gals... roblem: #14 · Oct 11, 2009

Blackroc said: Lights also come on when you travel over 90MPH guys and gals... roblem: Click to expand...

Right ! Just going out now to test that one #15 · Oct 11, 2009

Blackroc said: Lights also come on when you travel over 90MPH guys and gals... roblem: Click to expand...

Thats most likely this which is turns on at 88mph (= 140kph). http://www.my-gti.com/208/volkswagen-go ... ove-140kph Volkswagen Golf Auto Headlights above 140kph (88mph) The Golf has a feature turned on by default in countries that have the “auto” european light switch. The only requirements are the Central Electronics Controller (09) of type 3C0 XXX XXX XX, a RegenLichtSens (RainLightSensor) and the european light switch. The option of the system is · Lights turn on at 140kph (actual speed not speedometer speed) · Lights turn off after 10 minutes driving under 80kph (again actual speed) or 10 minutes stopped (with or without ignition turned off) Disable Auto Headlights above 140kph 1. Open the Central Electronics Controller (09) 2. Click the drop down box and choose the RegenLichtSens (RainLightSensor) 3. Note the software coding (00)208933) (most cars have different codings) 4. Convert to Hex (0)3 30 25 5. Remove 1 from the left hand value Hex (0)2 30 25 6. Convert to Decimal (00)143397 and replace the old coding. Enabling Auto Headlights above 140kph Perform the above but instead of removing 1 from the left hand value you add 1. Options · +1 = Highway Light · +2 = Rain Light · +4 = Rain Closing #16 · Oct 11, 2009

RW1 said: olkswagen Golf Auto Headlights above 140kph (88mph) The Golf has a feature turned on by default in countries that have the “auto” european light switch. The only requirements are the Central Electronics Controller (09) of type 3C0 XXX XXX XX, a RegenLichtSens (RainLightSensor) and the european light switch. The option of the system is · Lights turn on at 140kph (actual speed not speedometer speed) · Lights turn off after 10 minutes driving under 80kph (again actual speed) or 10 minutes stopped (with or without ignition turned off) Disable Auto Headlights above 140kph 1. Open the Central Electronics Controller (09) 2. Click the drop down box and choose the RegenLichtSens (RainLightSensor) 3. Note the software coding (00)208933) (most cars have different codings) 4. Convert to Hex (0)3 30 25 5. Remove 1 from the left hand value Hex (0)2 30 25 6. Convert to Decimal (00)143397 and replace the old coding. Enabling Auto Headlights above 140kph Perform the above but instead of removing 1 from the left hand value you add 1. Options · +1 = Highway Light · +2 = Rain Light · +4 = Rain Closing Click to expand...

RW1 - you have too much time on your hands matey! :lol: #17 · Oct 11, 2009

Blackroc said: RW1 - you have too much time on your hands matey! :lol: Click to expand...

Naaa... Just learning the Flight Manual off by heart before November take-off in my SkyRocket. #18 · Oct 11, 2009 So what is option +4 at the end - Rain closing ? Does this close your windows when it starts raining ? As opposed to those peeps who've had problems with the windows opening when it rains :roll: #19 · Oct 12, 2009

ZephyR said: So what is option +4 at the end - Rain closing ? Does this close your windows when it starts raining when it rains :roll: Click to expand...

It appears so on the Golf. In the "Central Electronics Controller (09) " and "Comfort System Controller (46)" Long Coding. Need a car to play with as well getting a VAG-COM laptop into shape before Wk46. C. #20 · Oct 12, 2009

Blackroc said: Lights also come on when you travel over 90MPH guys and gals... roblem: Click to expand...

Actually you can hit 100 (not, of course, that I have done that in this country ) briefly then drop back below 90 and the lights will not come on. It takes 4 or 5 seconds before they switch on Insert Quotes Post Reply

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