Just purchased and installed what I have confirmed to be the correct "euroswitch" (off, park, HL, pull out for front fog and again for rear fog) for my golf '10 TDI. After installing based on all the info I could find (connect yellow trigger wire to pin #3 HL switch and CECM pin #19, and disable DRLs), I am getting the headlights coming on with the parking lights in the park light position and cannot activate fogs in that position either! Am I missing something?
Help!! Euroswitch Problem!!
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Correct, the DRL Disable is required on all mk5-mk6 cars to get the euroswitch to work.
Do you have HID headlights or halogen?
What is the part number of your Euroswitch? What happens in the following positions:
1. headlights off parking brake on
2. headlights off parking brake off
3. headlights set to middle, parking brake on
4. headlights set to middle, parking brake off
5. headlights set to headlight, parking brake on
6. headlights set to headlight, parking brake off.
On a side note, someone on another forum keeps asking which switch they need for their 2010 Jetta and I clearly stated that the mk5 switch is plug-play on all mk5 Jetta. It's possible that a few 2010 don't have the parking light trigger wire but I've tried it on a 2010 Jetta TDI and my 2006 switch is plug-play. If the parking lights aren't working it's because some 2010 Jetta/Sportwagen and probably most mk6 Golf don't have the parking light wire. That should not effect the fogs.
Do you have HID headlights or halogen?
What is the part number of your Euroswitch? What happens in the following positions:
1. headlights off parking brake on
2. headlights off parking brake off
3. headlights set to middle, parking brake on
4. headlights set to middle, parking brake off
5. headlights set to headlight, parking brake on
6. headlights set to headlight, parking brake off.
On a side note, someone on another forum keeps asking which switch they need for their 2010 Jetta and I clearly stated that the mk5 switch is plug-play on all mk5 Jetta. It's possible that a few 2010 don't have the parking light trigger wire but I've tried it on a 2010 Jetta TDI and my 2006 switch is plug-play. If the parking lights aren't working it's because some 2010 Jetta/Sportwagen and probably most mk6 Golf don't have the parking light wire. That should not effect the fogs.
Thanks for the responses 
I did install the parking light wire though, now I'm thinking that all the info i've gotten so far have used cars with Xenons, I have halogens (mind you no one has contested these installs that has halogens)...I'm wondering if the trigger wire might need to go to a different pin other than 19 in the CECM for a car with halogens, thoughts?
I did install the parking light wire though, now I'm thinking that all the info i've gotten so far have used cars with Xenons, I have halogens (mind you no one has contested these installs that has halogens)...I'm wondering if the trigger wire might need to go to a different pin other than 19 in the CECM for a car with halogens, thoughts?Partnumber of switch is: 5K0898007
In the parking light and on position I have headlights on with parking lights, whether parking brake is on or off, no DRL indicator on dash (bc DRLs are deactivated)...when I turn headlight switch off, with handbrake on/off there are no exterior lights (a good sign)
In the parking light and on position I have headlights on with parking lights, whether parking brake is on or off, no DRL indicator on dash (bc DRLs are deactivated)...when I turn headlight switch off, with handbrake on/off there are no exterior lights (a good sign)
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91 Posts
Sounds like the trigger wire you added is not making contact at one end or the other. Did the wire snap fully into place in both connectors?
Yeah, I think you're right...even though I went over it a few times, I'm gonna have to check again to make sure the connectors are tight. I can't see any other reason why it doesnt work, unless the switch is bad, but it seems to be working as far as the positions.
Also, on this switch when you turn to the parking light position, and pull out, should the fog lights come on? (Obviously I mean when the switch is working as intended)
Also, on this switch when you turn to the parking light position, and pull out, should the fog lights come on? (Obviously I mean when the switch is working as intended)
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Yes.
It's possible that halogens are different because the other ones were xenon. Not sure though, thanks for raising the question.
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91 Posts
It does on mine.
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18 Posts
I agree with the possibility that the new parking position pin isn't seated at the HL switch connector. The new switch should work even with the DRL's enabled, you would just gain the new parking position and rear fog position if that is wired.
If you don't have this sorted with the wiring check, post the VCDS scan data from the 09 module so I can see how it's configured.
-Dana
If you don't have this sorted with the wiring check, post the VCDS scan data from the 09 module so I can see how it's configured.
-Dana
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91 Posts
Hey, Dana, I've been looking through Vortex but never saw an answer to this mildly related question. If I want to add a rear fog light without LED tails, can I do that only with coding, or do I need to move wires at the CECM?
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18 Posts
Well, that might not be so simple. Yes you can install the rear fog switch, add the trigger wire to the module, swap the reverse and rear fog signal wires, and install a (non NAR) LHD inner tail/fog lamp ...but most of the exterior lighting is controlled by Byte 18. Please read this before altering Byte 18:
http://forums.vwvortex.com/showthre...s...-(MK6)&p=67300665&viewfull=1#post67300665
This thread explains Byte 18 and the mentioned wire swap:
http://forums.vwvortex.com/showthread.php?4898893-LED-tail-Install-with-or-without-Rear-Fog.
You could give this a trial run before purchasing the actual lamp. The only disadvantages would be the lack of one reverse light (which will be permanent if this works) and the lack of an operational rear fog light until it was finalized. The advantage would be minimal $$ investment if this is a failure. Feel free to post your Auto-Scan and I'll take a look at it.
So I've tried playing around with the switch and wires again and I've found that when I jump pin 3 and 8 on headlight switch harness I get all exterior lights except fog and high beam, I should get parking lights only. This is the same condition I get with the switch plugged in and in the parking light mode. So, I'm satisfied that the switch is not defective. I also got a new trigger wire so I've eliminated that as well. I've also done some VCDS troubleshooting to no avail. I'm totally perplexed as to why this is not working. I need to post scan data as Dana suggested, but I haven't had enough time to spend getting that together. I think my next step is to look under the dash and verify that a pin exists in #19 on the module connector to actually receive the trigger wire I've installed. If there is, I don't know what the next step should be. BTW my fogs still dont come on in parking light position when I pull the switch out. Such a simple task is making me crazy!
ugh...soooo, I just realized that I had tested pin 9 instead of pin 8 against pin 3. I put my paperclip between 3 and 8 behind the headlight switch harness and voila, only the parking lights came on...so I tested the continuity between 3 and 8 on the back of the switch with the switch in parking light position...nothing. So I guess the switch is defective afterall...I guess I'm sending it back to ECS. I opened it up and I dont think there's anything I can do with it.
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So, I can finally put this one to bed. Finally got my replacement euroswitch from ECS...I know its been a while but I kind of sat on it for a while because I've been busy. I popped the switch in and it works 100%! So my suspicions were correct in the end about the switch being defective. During the exchange I opted to change my original choice of the seven position switch to the eight position switch (which adds the Auto position) for the purposes of possibly adding the light sensor at a later time. A little tidbit for those that don't know, without the light sensor, turning the switch to the auto position will turn on the headlights with key in and turned to ON. When the key is removed in the OFF position the headlights and parking lights will completely turn off with the switch in Auto. Now there are other ways to accomplish this (see other threads related to lighting) but this was something I wasn't necessarily expecting. Thanks for everyone's help with this simple install turned bizarre.
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