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No longer work low beam headlights

Posted: Mon May 30, 2016 3:51 pm
by Andrea 6r
Hello everyone,
I have headlights xenon bi aftermarket,I have a diode and I had a coding
last night, suddenly, you are off the headlights and I can not get them back to work
I tried:
to raise the diode
to raise the encoding
to check the fuses
to disconnect the battery
changing column switch lights
a scan with the vag that does not mark errors
high beam work [only lever pressure "sfanalando" manually (not leaving the lever pressed)], I also tried to put a light bulb on the edge of the low beams, but it does not work!
There perhaps have some, a relay, which does not "know"?
thanks

Re: No longer work low beam headlights

Posted: Mon May 30, 2016 11:13 pm
by JayW
I had a similar issues with HID's installed which blew out my body control unit and Wiper motor because of a bad ballast.

If i was you i would check the control unit and see if that helps. I'm not sure what if the control unit will directly affect your headlights but if you have had HID's installed, it could cause this issue.

Re: No longer work low beam headlights

Posted: Tue May 31, 2016 8:08 am
by iichel
so if you pull the column switch lever towards you, for the high beam signal, it works? if so, you can rule out the headlight. that's working fine.
also, you lost both of the headlight at the same time?

Re: No longer work low beam headlights

Posted: Tue May 31, 2016 8:47 am
by Andrea 6r
JayW wrote:I had a similar issues with HID's installed which blew out my body control unit and Wiper motor because of a bad ballast.

If i was you i would check the control unit and see if that helps. I'm not sure what if the control unit will directly affect your headlights but if you have had HID's installed, it could cause this issue.
not sure I understand right :roll:
you're telling me to check ballast of headlight?
this?
Image
iichel wrote:so if you pull the column switch lever towards you, for the high beam signal, it works? if so, you can rule out the headlight. that's working fine.
also, you lost both of the headlight at the same time?
exact, pulling the lever work (it seems with less intensity)
they are "turned off" simultaneously

Re: No longer work low beam headlights

Posted: Fri Jun 03, 2016 5:16 pm
by Andrea 6r
I should have understood the cause of the problem: a contact between the diode and the mass
I have now reinstated the original connection, but still do not work on the low beams
The vag still does not give errors; I checked all the fuses are all OK
there are no other problems to the electrical system
where I can bang your head? :twisted:
ps I also put the pin 3 of the light switch (that is, that of the "fixed" lights but still not accessed the low beam)

Re: No longer work low beam headlights

Posted: Mon Jun 06, 2016 6:48 pm
by Andrea 6r
I solved : it was the relay 449
I changed and low beam lights work again

Re: No longer work low beam headlights

Posted: Thu Jan 14, 2021 12:13 pm
by Steve1954
Hi. Andrea 6r. I think l have the same problem. How did you get access to the relay. Did you remove the lower plastic fascia on the dashboard ? If so where are the fixings and which parts no l need to remove to gain access to the relay. Thanks Steve