andicole0
Registered User
My car doesn't have auto lights, but will the wiring and sensor be in place so that I can just replace the switch?
Andi.
Andi.
Auto light switch
- Thread starter andicole0
- Start date
The wiring might be in the loom but you'll not have the sensors. You maybe able to retrofit this..if it can it'll probably need activated via VCDS
We can supply/fit these systems, but chances are wiring wont be fitted, but we can do all this, pm if of interest.
andicole0
Registered User
I spotted an A3 auto light switch on ebay for £20. I thought if it was that cheap it would be a good mod. Wouldn't want to spend much more.
Andi.
Andi.
The auto light/rain sensor clips to a bonded brkt on the windshield which has the required obscurantism around it so you'll most likely need a new screen I would have thought.
Bittern
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Here's a link to a retrofit
http://hazzydayz.com/autolights--rain-sensor---audi-a3-8v---supply--fit-pr-8n6-3655-p.asp
http://hazzydayz.com/autolights--rain-sensor---audi-a3-8v---supply--fit-pr-8n6-3655-p.asp
DJAlix
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I retro fitted Auto Lights and Wipers. Do you have automatic climate control? If not then the needed wiring for the Rain Light and Humidity Sensor will not be in place and it will be a pretty big job. If you do then all you need to do is swap out your current Humidity Sensor and Light Switch then get your car coded with VCDS / VCP.
andicole0
Registered User
Hi DJAlix, fairly new to Audi so is auto climate control anything other than auto air con? I have a 2013 A3 S-Line. Where is the existing humidity sensor, in the mirror module? How do I tell if my windscreen is correct? There is a gap in the windscreen shading by the mirror.
Sorry for the questions I thought a simple switch change would do.
Andi.
Sorry for the questions I thought a simple switch change would do.
Andi.
DJAlix
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From the photos you have posted up it seems like you have everything needed. Your AC / Climate control is correct but lets check to be sure.
The Humidity sensor is located, secured by a metal clip which I do not have an example of, in the mirror mounting point which is stuck to the screen. Mirror mountings for anything other than lane assist are the same and do not require a new windscreen as the 8P used to for this retrofit.
To check whats in there you need to remove the plastic trim which is installed against the windscreen as detailed in my photos. If you have a sensor in there you will see the connecting wires straight away.
Remove the trim as follows:
Looking at your light switch you will need to change that out for a version with an AUTO position. Any switch will work as long as it has the same icons as your existing your fog light ones, even a switch with manual range control (which you don't connect). For 100% correctness tho you should install an 8V0941531L.
The Humidity sensor is located, secured by a metal clip which I do not have an example of, in the mirror mounting point which is stuck to the screen. Mirror mountings for anything other than lane assist are the same and do not require a new windscreen as the 8P used to for this retrofit.
To check whats in there you need to remove the plastic trim which is installed against the windscreen as detailed in my photos. If you have a sensor in there you will see the connecting wires straight away.
Remove the trim as follows:
- Photo 1 = Birdseye view of a detached mirror, in this example an Auto Dimming Mirror which needs a good clean lol
- Photo 2 = Trim Securing Clip (one on each side)
- Photo 3 = Grip the Trim as shown and squeeze in order to release the clips, then pull the top edge down, while pivoting on the bottom edge.
- Photo 4 = Released Trim
- Photo 5 = This is what the humidity sensor looks like, dusty in this example. The circuit at the top (bottom when installed) is the humidity sensor.
- Photo 6 = Humidity sensor flip side. Note that you will not really be able to see the sensor while it's installed.
- Photo 7 = example dusty sensor when in its mounted position.
Looking at your light switch you will need to change that out for a version with an AUTO position. Any switch will work as long as it has the same icons as your existing your fog light ones, even a switch with manual range control (which you don't connect). For 100% correctness tho you should install an 8V0941531L.
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andicole0
Registered User
Wow, thanks for that reply, brilliant.
I've sourced a switch - just in case (8V0941531J).
I'll check the rest tomorrow.
Andi.
I've sourced a switch - just in case (8V0941531J).
I'll check the rest tomorrow.
Andi.
DJAlix
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andicole0
Registered User
Just checked and the part number of the switch is L not J.
How is the switch removed, I've seen 8P videos where you push the switch in but this doesn't seem to work on mine?
Far too wet here today to look at the mirror
Andi.
How is the switch removed, I've seen 8P videos where you push the switch in but this doesn't seem to work on mine?
Far too wet here today to look at the mirror
Andi.
andicole0
Registered User
DJAlix
VAG CAR CODING
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Looks like you are good to go and just need all the parts then, and VCDS / Someone to code it all up.
You do have the correct light switch but it's broken, well damaged. Might still work but the switch should not be pushed in like that and should be flush with the surround. This seems to happen when people get in and out of our cars and hit the switch with their knee.
Best way to remove the switch is to remove the Dashboard side panel access cover and then push the switch out. Is not hard but might need a little more pressure than you think. Just make sure you have a hand on the outside in order to catch the unit should it pop.
You do have the correct light switch but it's broken, well damaged. Might still work but the switch should not be pushed in like that and should be flush with the surround. This seems to happen when people get in and out of our cars and hit the switch with their knee.
Best way to remove the switch is to remove the Dashboard side panel access cover and then push the switch out. Is not hard but might need a little more pressure than you think. Just make sure you have a hand on the outside in order to catch the unit should it pop.
andicole0
Registered User
My switch pushes in as per the 8P removal videos I've seen but it won't allow the unit to come out of the panel. The switch can be pulled back to be flush with the surface though.
Andi.
Andi.
andicole0
Registered User
andicole0
Registered User
Just checked and the part number of the switch is L not J.
View attachment 76585 View attachment 76586
How is the switch removed, I've seen 8P videos where you push the switch in but this doesn't seem to work on mine?
Far too wet here today to look at the mirror
Andi.
Darn it, the switch has arrived and it's not as described, no Auto setting :-( Have to return it and look again, found a couple in Germany but quite a bit more expensive!
Andi.
