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Headlights not working (read FAQ)

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Old 05-26-2009, 09:20 PM   #1
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Default Headlights not working (read FAQ)

So, about four days ago my second headlight went out after my first one had been out for about a week and a half. I replaced the headlights and was surprised to find that they a) didn't appear to be burst and b) weren't working when replaced. I checked the fuses - all fine. After doing some reading, I found out that the headlight switch commonly goes when using Silverstar Ultra Whites, which I was.

I tried the trick of cleaning up the switch and sanding down the plastic on the inside to keep it from sticking. That didn't work. Tonight, I replaced the combo stalk entirely (brand new). That didn't work. I get high beams when I pull back on the stalk, but nothing with the lights. No current coming off the fuse box.

The next logical step appears to be the Load Reduction Relay. The problem is, I'm not seeing any other problem aside from my "One Push" electric windows mysteriously disappearing (I can still roll them down, but just pushing the button once does nothing unlike it usually does). Parking lights work, turn signals work, stereo works, foglights work, climate control works - not sure about cruise control.

Could this still be the relay? Is there any diagnostic steps I can take, without a VAG-COM, that would point me in a good direction?
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Old 05-26-2009, 10:19 PM   #2
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Have you tried the parking brake switch?
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Old 05-26-2009, 10:20 PM   #3
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Parking brake switch? This is the first I've heard mentioned of this being a reason why headlights wouldn't turn on.
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Old 05-27-2009, 06:43 PM   #4
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well, despite the lack of interest in this thread, I'll keep updating:

Installed a new ignition switch today, which hasn't resolved the problem. I spoke with Jose of Euro Tech motors in the morning (Euro-techmotors.com, great guy), and he shot down the idea that it could be the Load Reduction Relay, which was my last hope. I"m all but over my head outside of anything electrical, and this is very much that, so I guess it's time for the shop.
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Old 06-01-2009, 03:48 AM   #5
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Hey thanks for the info. Im interested - and having the same problem. Didnt make the connection with the one touch power windows but now that you mention it...
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Old 06-03-2009, 07:20 PM   #6
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if you disconnected your battery when you were working on your headlight switch (before taking the steering wheel off) this is the cause of the auto up/down feature not working

just put the windows all the way and then all the way up 3 or 4 times in a row and it should reset. Theres something in the manual about it but I can't find it right now.

Also you said you have blinkers but do you have hazard lights? Sometimes when the relay for that goes (which is behind the hazard light switch) it screws up the whole lighting system and vice versa (sometimes the light switch screws up hazard relay). I would try to replace that relay before load reduction - it will save you a lot more money and a lot of time.
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Old 06-19-2009, 06:21 PM   #7
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Default Ignition Switch or load reduction relay

I just had the same problem, the problem must be the load reduction relay or the ignition switch, if it is the ignition switch, you may have to change the terminal that connects with the ignition switch ( it might not be doing proper contact), i just fix it, and i had to change the terminal, because it was melted. I also advice to improve the connection between the terminal and the red cable, it's not properly design and it heats at the terminal.

Good luck
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Old 08-06-2009, 09:58 PM   #8
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I had the exact problem. Took the combination switch and clean....no avail.


When I pull the cruise stick, a relay click and the hi beam comes on. So the problem is somewhere else. No fog light either.

Have you fixed yours? I am waiting for Vag-com to arrive.
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Old 08-07-2009, 06:22 AM   #9
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I don't believe vag-com will tell you anything about this problem, the circuit is not one that is monitored. If your combi switch is good the next step would be to check the ignition switch, the wire in question is red.
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Old 08-09-2009, 12:06 AM   #10
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Most likly you have a burnt terminal on the conection at the headlght switch. Removed the conector and check the female pins.
Or look at the old switch male pins for black marks. I think the wire color that feed the headlight fuses if yellow/black. Look at a wire diagram. If the load relay was bad t
more stuff would not wark

bmwbiker
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Old 05-29-2010, 11:56 AM   #11
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Default Same Problem

Hello,

87' Audi 5000 CS TQ

I am haveing the EXACT same problem. I was using the 100W Silverstar upgraded bulbs for about 2 weeks and now I cannot get my headlights to turn on.

If I pull back on the stick and hold it the high beams will stay on.

Did any of you come up with a solution to this problem? I really need help because I have to drive at night. Thanks in advance!

-Ray
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Old 05-29-2010, 04:20 PM   #12
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Default N/M

Sorry I know this thread is old but I think I actually found a solution to this problem.

http://www.sjmautotechnik.com/troubl...elec.html#lowb

I am going to the junkyard Monday to pull a combo switch of an Audi 200. If anyone who posted before is watching this thread still and hasn't solved their problem, I will let you know how it goes.

Cheers.
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Old 12-29-2010, 03:07 PM   #13
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Default terminal maybe?

so my low beams stopped working last thursday night and i did some research and figured it was the combo switch. bought a used one from auto salvage and replaced myself. I'm no mechanic, though I'm alright with taking things apart and reassembling them (thanks to lego’s). but my low beams/ fog lights still aren't working. i have to work a late shift tomorrow night and I'm stressing to get them fixed immediately!!

if someone can walk me thru on how to check to the terminal, or any other possible reasons on why their not working i would highly appreciate it.

SN: fuses seem fine and i doubt its the actual headlights since they both went out at the same time, along with the fog lights.

thank you.
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Old 05-19-2015, 09:47 AM   #14
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Quote:
Originally Posted by wallabeex View Post
So, about four days ago my second headlight went out after my first one had been out for about a week and a half. I replaced the headlights and was surprised to find that they a) didn't appear to be burst and b) weren't working when replaced. I checked the fuses - all fine. After doing some reading, I found out that the headlight switch commonly goes when using Silverstar Ultra Whites, which I was.

I tried the trick of cleaning up the switch and sanding down the plastic on the inside to keep it from sticking. That didn't work. Tonight, I replaced the combo stalk entirely (brand new). That didn't work. I get high beams when I pull back on the stalk, but nothing with the lights. No current coming off the fuse box.

The next logical step appears to be the Load Reduction Relay. The problem is, I'm not seeing any other problem aside from my "One Push" electric windows mysteriously disappearing (I can still roll them down, but just pushing the button once does nothing unlike it usually does). Parking lights work, turn signals work, stereo works, foglights work, climate control works - not sure about cruise control.

Could this still be the relay? Is there any diagnostic steps I can take, without a VAG-COM, that would point me in a good direction?
I have the same problem too. Both my headlights went out but my blinker works, park lights works beside my head lights. My high beam only works when I hold back the stalk. Also there's no voltage coming out the fuse socket for the head lights when I checked for voltage and also my fog lights don't work. I bought a new ballast and bulb. I install it and still it didn't work. What do you guys think is the problem is? Is something wrong with the wiring? Do I need a brand new fuse box? Rely fuse? I'm a new audi owner and don't really have a clue on this type of situation. I own a 2000 audi a6 quattro.
Please help. Been working on it for about a month now.
Thank you
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Old 07-20-2015, 04:37 PM   #15
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Default 1996 - 2001 B5 A4 Long term fix for failing head light switch

The headlight switch will continue to overheat and stop working until this modification is installed. The relays installed will handle all of the headlight current that the light switch used to not handle to well at all.

This will keep the heat out of the headlight switch and prevent any future failure.

I will attache a PDF of my drawing that I created and used to install the modification into my 1996 - 2001 B5 A4.

1996 - 2001 B5 Audi A4 Head Light Modification Rev 2 .pdf
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Old 07-20-2015, 05:01 PM   #16
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Quote:
Originally Posted by Adam Bierlein View Post
The headlight switch will continue to overheat and stop working until this modification is installed. The relays installed will handle all of the headlight current that the light switch used to not handle to well at all.

This will keep the heat out of the headlight switch and prevent any future failure.

I will attache a PDF of my drawing that I created and used to install the modification into my 1996 - 2001 B5 A4.

Attachment 48451
Thank you.
I will definitely work on that.
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Old 07-26-2015, 05:02 PM   #17
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Default 1996 - 2001 B5 A4 Long term fix for failing head light switch

The headlight switch will continue to overheat and stop working until this modification is installed. The relays installed will handle all of the headlight current that the light switch used to not handle to well at all.

This will keep the heat out of the headlight switch and prevent any future failure.

I will attache a PDF of my drawing that I created and used to install the modification into my 1996 - 2001 B5 A4.

1996 - 2001 B5 Audi A4 Head Light Modification Rev 2 .pdf
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200, 2003, a4, audi, b5, buy, headlight, headlights, light, load, problem, problems, reduction, relay, tdi, working

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