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Audi TT 2000-2006 Xenon Headlight won't ignite intermittently (2002 TT Quattro)


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Last Post: May 6, 2015 11:28 PM Last Post By: Squints 03 TT
2002TTnoir

Posts: 3
Registered: 05/11/10
Xenon Headlight won't ignite intermittently (2002 TT Quattro)
Posted: May 11, 2010 8:32 PM
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Left Xenon headlight won't turn on occasionally. I turn off the switch and try again - usually ignites, sometime I must try many times. Dealer has replaced a lamp ($215) a ballast ($850) and then again replaced the ballast, calling it a "module." I later found out it was the same part number as the previously replaced ballast. I hit the ceiling. None of this fixed the light. Now they want to troubleshoot the wiring harness. Has anyone had this intermittent problem - or any suggestions? Is there a "module and is it different than the ballast? Can the "igniter" be replaced? What should we look at next? I've already spent nearly $2000 - I should add that I have a service warranty and the dealer says the warranty company will pay for replaced parts, but not for troubleshooting - I guess that's why they replaced the ballast again?

Edited by: 2002TTnoir on May 11, 2010 8:33 PM
RickW

Posts: 718
Registered: 02/16/05
Re: Xenon Headlight won't ignite intermittently (2002 TT Quattro)
Posted: May 12, 2010 10:03 AM   in response to: 2002TTnoir in response to: 2002TTnoir
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Hello

Can I ask where you are located?

Rick W
Bentley Publishers
2002TTnoir

Posts: 3
Registered: 05/11/10
Re: Xenon Headlight won't ignite intermittently (2002 TT Quattro)
Posted: May 12, 2010 4:57 PM   in response to: RickW in response to: RickW
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I'm in Southern New Jersey. Why? Do you know something that can help me? I'm reluctant to let the dealer troubleshoot. I'm thinking I may try myself. That's why I researched Bentley Publishers - I'm getting a service manual to try to figure it out. Any suggestions will help. Thanks in advance.
RickW

Posts: 718
Registered: 02/16/05
Re: Xenon Headlight won't ignite intermittently (2002 TT Quattro)
Posted: May 13, 2010 9:45 AM   in response to: 2002TTnoir in response to: 2002TTnoir
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Just confirming you have a US market vehicle, nothing more. Most of the people on here will be able to help with US stuff. Oftentimes headlight systems for cars built for other markets can and do differ.

Honestly, if the lights are coming on intermittently, I would suspect the headlight switch before anything else. The service manual does detail headlight assembly and replacement, as well as headlight switch replacement. I looked in the book, and I don't see any part I'd identify as a "ballast". That's mostly why I wanted to confirm your location - to make sure we were discussing the same headlight system.

Rick W
Bentley Publishers
2002TTnoir

Posts: 3
Registered: 05/11/10
Re: Xenon Headlight won't ignite intermittently (2002 TT Quattro)
Posted: May 13, 2010 11:19 AM   in response to: RickW in response to: RickW
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Thank you. It is only the LEFT headlight - the right one starts every time. Could this still be the switch? Are there separate contacts for each headlamp on the switch?

The "Ballast" I'm referring to is screwed to the side of the lighting assembly - which sends wires to the igniter, a white box which resides inside the assembly, below the lamps. Two wires exiting the igniter attach to the rear of the bulb. The technician said he replaced the "Module" but gave me the removed part - which was the silver metal component screwed to the side of the assembly. This part was identified (twice) as a ballast on the work order. Any info you can shed is appreciated. My manual has not arrived as of yet. Thanks.

Edited by: 2002TTnoir on May 13, 2010 11:30 AM
RickW

Posts: 718
Registered: 02/16/05
Re: Xenon Headlight won't ignite intermittently (2002 TT Quattro)
Posted: May 13, 2010 12:23 PM   in response to: 2002TTnoir in response to: 2002TTnoir
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Well, based on your description and the book, it looks like "ballast" and "module" probably are both referring to the headlight control module. Igniter? I'm not sure. Could you be referring to the bulb holder?

It'll probably make more sense to you once you can see the diagrams yourself, compared against the car (I don't have a car available against which to compare). I also didn't realize that one headlight would go on and that the other would not. My only advice is to start following the wiring diagrams and looking for problem components.

Rick W
Bentley Publishers
TTChick

Posts: 1
Registered: 06/06/10
Re: Xenon Headlight won't ignite intermittently (2002 TT Quattro)
Posted: Jun 6, 2010 7:56 PM   in response to: 2002TTnoir in response to: 2002TTnoir
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I am having the same problem on a 2003. I know for sure it is not the bulb cause a friend and I switched them around and the same assembly failed with the other bulb. I am looking at buying a new assembly, a new ballast or a new igniter, but some info. on which one is the llikely cullprit would be great. I think it is something related to the ignition of the arc in the xenon, based on how xenons work. I do not think it would be the switch.

I believe the module and the ballast are the same thing. The ballast regulates current going to the bulb.

Edited by: TTChick on Jun 6, 2010 7:58 PM
Kory

Posts: 1
Registered: 10/29/10
Re: Xenon Headlight won't ignite intermittently (2002 TT Quattro)
Posted: Oct 29, 2010 8:40 PM   in response to: TTChick in response to: TTChick
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I have the same problem. I find it happens more often when the car is cold and even more so when it has been raining. Once I get it on it is never a problem for that day... Have you made any headway?
goosenmaverick

Posts: 1
Registered: 12/25/05
Re: Xenon Headlight won't ignite intermittently (2002 TT Quattro)
Posted: Dec 28, 2010 2:15 PM   in response to: 2002TTnoir in response to: 2002TTnoir
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I have a 2003 TT with the same problem. Left headlight only. About 30% probability of it turning on at any given time. Once it lights up, it works all day long just as previously stated. After an overnight dwell, you're back to the 30% probability of a light. Dealer changed light/bulb to no avail. None of this is different to the other postings, but just want to keep this thread alive - very frustrating problem and looking for a solution. Must be a systemic problem for everyone's symptoms to be identical.
NoahC

Posts: 1
Registered: 03/03/07
Re: Xenon Headlight won't ignite intermittently (2002 TT Quattro)
Posted: Mar 2, 2011 9:34 AM   in response to: 2002TTnoir in response to: 2002TTnoir
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I, too, have this problem, but only when it rains or there is condensation. I tried a new bulb, etc, and it's only on left side on an '03 TT. I thought that maybe some RTV on the wires going from the igniter/ballast/module to the bulb might help.
JamminKen

Posts: 1
Registered: 03/11/11
Re: Xenon Headlight won't ignite intermittently (2002 TT Quattro)
Posted: Mar 11, 2011 10:34 AM   in response to: 2002TTnoir in response to: 2002TTnoir
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These internet postings saved me $1700....so thanks everyone! I was having the same problem with my driver's side headlight and the local Audi dealer wanted to charge me that much to replace the entire headlight. I picked up my TT from the dealer, turned the switch on and off and on three times, and voila...it fired up...just like pushing the igniter on a gas grill several times. This must be a defect since it is a common issue, so I filled out a customer relations form on Audi's website and also included a link to this thread. Let's hope they decide to recall it and take care of us without soaking us for $1700 each.
whitr

Posts: 4
Registered: 04/11/11
Re: Xenon Headlight won't ignite intermittently (2002 TT Quattro)
Posted: Apr 11, 2011 2:37 PM   in response to: JamminKen in response to: JamminKen
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$1700 is unreal. I would have choked. Try going on-line on e-bay for future needs. You can get a lot of help with parts and prices, just be careful of the imitation stuff.
Manx TT

Posts: 1
Registered: 05/10/11
Re: Xenon Headlight won't ignite intermittently (2002 TT Quattro)
Posted: May 10, 2011 4:21 PM   in response to: 2002TTnoir in response to: 2002TTnoir
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I have same problem. Read the thread but still can't determine what solution has worked for you all. Can someone clarify please. I replaced switch. Still not working. Same as others, worse when cold. Once on, it's on. Swapped bulbs. Swapped igniters. Left to right. Fault stayed on the right. Seems to me that wiring or connectors might be the issue? Help please!
J-Fox

Posts: 1
Registered: 06/25/10
Re: Xenon Headlight won't ignite intermittently (2002 TT Quattro)
Posted: Jun 26, 2011 12:56 AM   in response to: 2002TTnoir in response to: 2002TTnoir
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It's the ignitor inside of the headlight. They are part of the headlight so you either have to buy a new headlight or get one from someone who wrecked. If you get a used one, take the headlight off and take the back off and it's real hard to get to but with a tiny screwdriver, you can push off the electrical connector. Then just plug it into the new one and fit it inside the headlight. Otherwise, new headlight.
razer8282

Posts: 1
Registered: 06/02/12
Re: Xenon Headlight won't ignite intermittently (2002 TT Quattro)
Posted: Jun 2, 2012 2:40 PM   in response to: J-Fox in response to: J-Fox
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I too had the intermittent problem, and I was able to take the ignitor out from the headlight by using a small screwdriver, taping it on the side of the screw head which holds the ignitor in place, it took a while but the screws finally came out.
I installed the new one using double sided tape, it has been 6 month now and no problems.
Buffalo Bob

Posts: 1
Registered: 08/16/12
Re: Xenon Headlight won't ignite intermittently (2002 TT Quattro)
Posted: Aug 16, 2012 11:37 AM   in response to: 2002TTnoir in response to: 2002TTnoir
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I guess I'm not unique, have the same problem left headlamp on my 2000 TT Coupe. It hasn't rained but I did wash the engine. I unplugged the connector and have no power on any pin with ignitionand lights on. The right lamp is fine. I was just trying to tap in to add some LED "eyes" and noticed the lamp out.
Bigtire

Posts: 1
Registered: 07/11/14
Re: Xenon Headlight won't ignite intermittently (2002 TT Quattro)
Posted: Jul 11, 2014 3:07 PM   in response to: 2002TTnoir in response to: 2002TTnoir
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I realize this thread has not been continued for some time but I to have issues with the left (driver side) xenon headlight working intermittently. In fact now it doesn't function at all. I believe the fault is with the ignitor and I have sourced several fixes from replacing the ignitor / ballast combination with aftermarket (not recommended) to replacing the entire headlight assembly with aftermarket quality products (Hella) that arer substantially less than OE parts. I am now considering replacing the Xenon assembly with lower cost Halogen or LED assemblies but am concerned about how the computer system will react to the change. Distressing to say the least. Has anyone else gone this route? Any further suggestions?
Squints 03 TT

Posts: 1
Registered: 05/06/15
Re: Xenon Headlight won't ignite intermittently (2002 TT Quattro)
Posted: May 6, 2015 11:28 PM   in response to: Bigtire in response to: Bigtire
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Im having the same issue. I just bought a whole new headlight assembly and it still sometimes needs switching on several times to get headlamp lit. This is total BS and obviously a manufacturer defect. Weve all spentway too much money on these and even the dealerships cant figure it out. Im filing a complaint to get the recall process started. PLEASE - HELP THIS GET SOME TRACTION AND A RECALL IN ORDER. This ks the only way to get Audi to fix their defect. My thoughts are it is a headlight - a major safety component of any car - theyve got to address it, right?

Go here and file your headlamp issue too!

https://www-odi.nhtsa.dot.gov/VehicleComplaint/index.xhtml

Once they see how many defective headlamps Audi has produced in the TT line theyre sure to act

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