I was driving and had the right headlight go out. The fault indicator stated that the right dipped headlight had a fault, then that the bulb was bad. I kept driving, as I thought that I could see well enough with the left light. After a while, the light came back on. Shortly after that, the same thing happened with the left dipped headlight. Again, I kept driving, as I thought that I could see well enough with the right light. Shortly after that, I entered the interstate, and increased my speed to about 65 mph, and drove in the middle lane as I anticipated going to the left side when the road split in about three miles and then exiting shortly afterward. Then both lights went out. I had to signal to go to the right side of the road, through two lanes of fairly heavy traffic, and stopped. Luckily, another driver who had noticed that I was having problems offered to drive slowly in front of me to allow me to continue until I could get off the highway. I thought that I would be able to drive slowly on off-highway streets to get home, but both lights came back on. Since that time, I have had three other similar incidents. I am afraid to drive the car on the highway at night.

- Salt Lake City, UT, USA

The left headlight dips occasionally, without warning, randomly. Then you have to turn off the lights to hopefully correct/reset the headlight. It's clearly a safety hazard.

- Evanston, IL, USA

I was driving on I-45 S to houston and at 9 pm, I tried turning my front fog light on as it was getting foggy occasionally. I was at 75 mph speed on right lane, all of a sudden all lights went out, I immediately pulled over to the median and after playing around some kind of light came back, drove to nearest exit to gas station about a mile further and checked all lights, it was working fine now. I have read similar kind of complaint here and not sure if it is getting attention. Does death has to occur before nhsta and Audi listen to this problem. 75 mph in interstate at night without lights on, can you imagine my situation. It can easily cause death and damage. Fix this problem because it is not bulb issue, it is manufacturer defect.

- Rapid City, SD, USA

2006 Audi A4 dipped headlight / flicker / problem. Left headlight will flicker and go out, happens at random, at speeds from 0 to 70 mph. Audi dealer said the gas level in the headlamp is low, recommended not to repair at this time, to address, turn lights off and back on when it occurs. Have had to do this multiple times within a 10 minute period to keep the headlamp on.

- Amherst, OH, USA

The car was parked overnight. Once the temperature reach approximately 40 degrees, the brake lights activated, but deactivated when the car was started and I pressed the brake pedal. Over the course of a few months, this malfunction completely drained my battery.

- Atlanta, GA, USA

After the headlights were activated, the left hand light flickered then went out. The display area gave me a warning that the headlight bulb was out. It happens each night and is remedied by deactivating the headlights then turning them on again. I had both headlights changed in June, but the right hand headlight does the same now.

- Atlanta, GA, USA

Headlights flicker and sometimes emit a warning that states "tipped headlight" which triggers the car to immediately turn the affected headlight off--this can occur while the car is parked or in motion. It usually happens to me when I am driving, but there is no pattern and it seems to be getting worse. The only way to fix it is to turn the headlights off and then back on, which is very dangerous!!! there is currently a class action lawsuit against Audi where they will refund a portion of your repairs for the faulty hid headlights on the 2006 Audi A4, but Audi still claims that they are not liable and not at fault (www.hidheadlightsettlement.com/). please force Audi to recall this headlight problem--I should not have to pay my local dealer close to a thousand dollars for something that is obviously defective and should be recalled due to safety reasons (the class action suit only refunds repairs prior to August 2013 and won't even cover the entire cost). There are a lot of 2006 Audi A4's out there with this problem--the complaints are all over multiple message boards, and there were obviously enough people out there with this problem or the class action suit would not have been approved.

- Carson City, NV, USA

The front headlights keep flickering on and off while driving.Audi: There are two separate conditions that both occur in vehicles with bi-xenon, with or without adaptive lighting (afs): One xenon light on either side sporadically flickers or flashes and goes out. When headlamps are turned off and on again or at ignition cycle, the headlamps may function properly or exhibit the same behavior; one xenon light on one side fails permanently.

- Glendale, CA, USA

Headlight flickers then goes out. When car is restarted the light works but then goes out when driving again.

- Lincoln, NE, USA

In regards to hid headlights on 2006 Audi A4 models and speaks to my exact frustration & non-action taken by Audi to resolve this issue as I feel it is the manufacturers responsibility and not that of the owners. Several years ago when I first purchased this Audi, one of my headlights would occasionally flicker while I was driving, & then produce an error code: "left dipped headlight." The problem eventually went away.the bulbs still produce light, but while driving both headlights will flicker, "right dipped headlight" and "left dipped headlight". one way to get the lights to start working again is to turn them off and on which is extremely dangerous and causes me to pull over for the safety of myself and others. The bulbs are somewhat new and all the headlight parts are oem, and this becomes extremely dangerous as it will happen while I'm driving at night in the dark. I understand from online blogs that several other 2006 Audi A4 owners have the same problem, which ties back to the headlight assembly. I feel strongly that NHTSA should look into this issue given that headlights are an important function of a car while and this is a serious hazard for both the driver and other drivers when driving in the dark. I have recently serviced my car and felt I had no choice but to take this matter into my own hands and have faith that the Audi dealer service will resolve this. Although, I have taken it there several times before, and they said they had no issues with the headlamps and could not recreate the problem. Today, they seem to have figured it out but it will be very costly. I strongly believe Audi as a manufacturer should be responsible for some sort of recall or reimbursement for any services done regarding the hid headlamps as it is obviously not an isolated incident. Thank you for your consideration.

- Long Beach, CA, USA

Upon initial start of the vehicle, just about every start, the left headlight will flicker and then shut off and show a left dipped headlight on the display. Shutting off the lights and turning them back on allows the bulb to turn on again, but the flickering keeps happening until the light warms up then it stops. The bulb will repeatedly flicker and shut off causing a serious safety concern.

- Seattle, WA, USA

The left headlight of my 2006 Audi A4 quattro continues to have problems: Randomly, the left headlight flickers and then turns itself off. I get an error message that states, "left dipped headlight." If I turn the light switch off and then back on again, the left headlight illuminates again. Sometimes, it will stay on for as long as 2 hours. Other times, it goes through the above steps within minutes. My local Audi dealer claims that they don't know anything about this (despite multiple online forums where hundreds of people all over the world are complaining about the very same problem). This is very unsafe. The cost to troubleshoot this, according to my Audi dealer, will run into the hundreds of dollars, at minimum, but again, they claim they have no idea about this.

- El Dorado Hills, CA, USA

The left headlight of my 2006 Audi A4 has a safety issue and is a very dangerous problem: 1. the left headlight flickers 2. it then turns itself off 3. the message "left dipped headlight" appears if I turn the light off (note: We're talking about driving at night here) and turn it back on again, the light will become normal again, for about a few seconds to minutes and then the cycle repeats itself. This problem is intermittent. A number of other drivers seem to have this problem as well as evidenced by the comments on several other forums and speaking with the Audi dealer. I was told no "campaign" has been issued.

- Converse, TX, USA

Left headlight/parking light dipped. Extremely unreliable signal. Flickered the bulb and shut off. If you switch off the light and restart, it is on for a minute and again the same.

- Forest Hills, NY, USA

The right dipped headlight flickered and then went out. Turning the lights on and off, restores the right headlight, but is a little dangerous at speed. This is a problem and in bad weather very dangerous.

- North Haven, CT, USA

Both headlights shut off at any time. Error message says left/right dipped headlamp. It seems like a design/engineering flaw. This is a dangerous safety issue, especially at night. This could result in death, injury, and monetary fines from the police. There should be an immediate recall to fix the problem.

- Hudson, NH, USA

This problem has occurred many times since I have owned the car with increasing frequency. Now the issue is happening every time I drive the car. The issue is that when my lights are on, they will flicker and go out. I will get an error message that says "dipped headlight". the only solution to this problem is to flip the lights off and flip them back on. Doing this results in the car being without lights for several seconds. Sometimes the right light will go out and sometimes the left light goes out. They can also happen at the same time, which results in me driving at night with no lights. This is a serious issue that affects the safety of the car. I have been researching the issue for some time and found thousands of other people with his issue. Audi is well aware of the problem but does not have a solution. They continue to tell us to change the light bulb at our cost, which does not solve the problem. Since this is a very serious safety issue that could cause a crash, resulting in injury or death, there needs to be a recall and solution provided. This is a design defect in the car and Audi should be responsible for fixing it.

- Charlotte, NC, USA

The vehicle for the past several months has had head lamp problems. I will be driving along and all of a sudden one of the headlamps will flicker and then go out. A warning on the dash will say left (or right) headlamp dipped. The only way to alter the situation is to turn the headlamp off and then back on at speed. This is a very dangerous situation. The dealer has said they cannot duplicate the situation and therefore cannot fix it. An internet search revealed that many Audi A4 owners have been experiencing the same problem on a regular basis. It is beyond belief that Audi, a manufacturer that prides itself on safety, has not investigated this problem and come up with a fix. I believe a recall should be initiated and Audi should be required to fix this very dangerous problem/defect.

- Dimondale, MI, USA

First, is was only the right headlight, but now it's both. The problem is the lights would flicker then turn off. After the lights turn off even the high beams won't turn on. The headlights turn back on when the lights are turned off and then on again.

- Pinole, CA, USA

Make / models : model/build years: Audi / A3 2006-2009 Audi / A4 2005-2007 Audi / A4 cabriolet 2007-2009 Audi / tt 2008-2009 service bulletin number : tsb-94-09-14 NHTSA item number : 10030587 summary description : Audi: There are two separate conditions that both occur in vehicles with bi-xenon, with or without adaptive lighting (afs): One xenon light on either side sporadically flickers or flashes and goes out. When headlamps are turned off and on again or at ignition cycle, the headlamps may function properly or exhibit the same behavior; one xenon light on one side fails permanently. Make / models : model/build years: Audi / A3 2006-2009 Audi / A4 2005-2007 Audi / A4 cabriolet 2007-2009 Audi / tt 2008-2009 service bulletin number : tsb-94-09-12 NHTSA item number : 10030630 summary description : Audi: Headlight, low beam may not work. There are two separate conditions that both occur in vehicles with bi xenon, with or without adaptive lighting(afs). One xenon light on either side sporadically flickers or flashes and goes out. One xenon light on one side fails permanently.

- San Jose, CA, USA