Headlights not working (read FAQ) - AudiWorld Forums

A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

Headlights not working (read FAQ)

Thread Tools Search this Thread
Old 05-26-2009, 10:20 PM   #1
New Member
Thread Starter
Join Date: Dec 2006
Posts: 3
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?
wallabeex is offline   Reply With Quote
Old 05-26-2009, 11:19 PM   #2
AudiWorld Member
Join Date: Aug 2005
Posts: 112

Have you tried the parking brake switch?
jimrobertson is offline   Reply With Quote
Old 05-26-2009, 11:20 PM   #3
New Member
Thread Starter
Join Date: Dec 2006
Posts: 3

Parking brake switch? This is the first I've heard mentioned of this being a reason why headlights wouldn't turn on.
wallabeex is offline   Reply With Quote
Old 05-27-2009, 07:43 PM   #4
New Member
Thread Starter
Join Date: Dec 2006
Posts: 3

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.
wallabeex is offline   Reply With Quote
Old 06-01-2009, 04:48 AM   #5
AudiWorld Member
Join Date: Jun 2009
Location: Sydney, Australia
Posts: 2

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...
surfsmith is offline   Reply With Quote
Old 06-03-2009, 08:20 PM   #6
Audiworld Junior Member
Join Date: Jun 2009
Posts: 22

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.
DRWonoski is offline   Reply With Quote
Old 06-19-2009, 07:21 PM   #7
AudiWorld Member
Join Date: Jun 2009
Posts: 1
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
germax is offline   Reply With Quote
Old 08-06-2009, 10:58 PM   #8
AudiWorld Member
Join Date: Nov 2004
Posts: 11

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.
chiwrong is offline   Reply With Quote
Old 08-07-2009, 07:22 AM   #9
AudiWorld Senior Member
Join Date: Oct 2003
Posts: 734

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.
David.Norton is offline   Reply With Quote
Old 08-09-2009, 01:06 AM   #10
AudiWorld Member
Join Date: Aug 2009
Posts: 6

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 is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Modify 2016 Q5 AMI cable to stream music and sound through bluetooth dongle ltooz_a6_a8_q7 Q5/SQ5 MKI (8R) Discussion 12 11-29-2015 08:21 PM
Thanks for helping! (New D3 owner) LONG CPLYONS A8 / S8 (D3 Platform) Discussion 7 09-07-2015 08:19 PM
Turn Signal Problem roastbeast Q7 Discussion 4 09-04-2015 05:22 AM
95 Cabriolet Power Roof Fix. stormchaser1967 Audi A5 / S5 / RS5 Coupe & Cabrio (B8) 0 09-02-2015 10:26 AM
DRL problems Beena A4 (B8 Platform) Discussion 0 09-02-2015 01:01 AM

200, 2003, a4, audi, b5, buy, headlight, headlights, light, load, problem, problems, reduction, relay, tdi, working

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -8. The time now is 05:39 AM.

  • Ask a Question
    Get answers from community experts
What's your question?