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full bulletin at NHTSA ↗2006 Audi S4 lighting problems
moderate 18 complaints filed with NHTSA · avg repair $250 · see lighting across all vehicles →
Failure mileage
Complaints
18
Recalls
0
Avg fix
$250
When does it fail?
Of the 18 lighting complaints filed for the 2006 Audi S4, here's the actual mileage breakdown — failures cluster heaviest at 50,000-75,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Lighting accounts for 60% of every owner complaint on file for this vehicle — the dominant problem area across 3 categories tracked.
No new NHTSA lighting complaint has been filed on this vehicle in over 16 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering lighting on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
This informational bulletin contains technical information for when there is condensation visible on the inside of the headlight, taillight, fog light, side marker light, front turn signal, daytime running lights, and/or third brake light lens.
full bulletin at NHTSA ↗Supersedes Technical Service Bulletin Group 94 number 12-92 dated October 24, 2012. Condensation is visible on the inside of the headlight, taillight, fog light, side marker light, front turn signal, daytime running lights, or third brake light lens.
full bulletin at NHTSA ↗Supersedes Technical Service Bulletin Group 94 number 11-52 dated October 11, 2011. Condensation is visible on the inside of the headlight, taillight, fog light, side marker light, front turn signal, daytime running lights, or third brake light lens. Damp air settles on the inside of a cold lens, which creates condensation. The headlight circulation system allows air from the outside to flow through the headlights. This open waterprotected ventilation system (needed for pressure compensation) creates different climate zones in the headlight: very warm areas, where the lens is warmed up by the light, and relatively cool areas, where the lens is cooled own by the air flow. Considerable differe
full bulletin at NHTSA ↗HEADLIGHT AIMING, USING HELLA UNIVERSAL BEAMSETTER.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The 2006 S4's HID headlights fail intermittently, especially within the first 5–10 minutes after startup. One or both lights flicker, dim, or shut off completely—triggered by acceleration, braking, road bumps, or in some cases cold weather. When a light fails, the dashboard displays a "dipped headlight" warning specific to the left or right side. Restarting the vehicle restores function temporarily, but the cycle repeats until the engine warms. Some owners report the right headlight failing specifically, while others experience both lights going dark. Failures happen almost every drive, multiple times per week, occurring at highway speeds and in traffic—creating genuine safety hazards.
Dealers have tried replacing bulbs, HID ballasts, control modules, and shims around the light housings to dampen vibration. These repairs fail repeatedly. Audi issued multiple Technical Service Bulletins without identifying a root cause or permanent fix. Some dealers propose complete headlight assembly replacement at $2,500 per light with no guarantee of success. Owners report this as a design or implementation defect affecting hundreds across multiple Audi model years and a class-action lawsuit that granted limited warranty coverage (5 years/50,000 miles from original purchase). Vehicles past that window, or owners unable to prove pre-warranty failure, pay full repair costs themselves—often repeatedly—with no resolution.
Same Audi S4 lighting reports on nearby years: 2005
Failure modes owners describe
HID headlight intermittent failure with cold-start flicker
One or both HID/xenon headlights flicker and fail within the first 5–10 minutes of driving, particularly during acceleration, braking, or over bumps. Headlight dips or extinguishes completely, triggering a 'dipped headlight' warning on the dash. Restarting the vehicle temporarily restores function; condition resolves after vehicle warms up past 10 minutes of operation. Issue occurs almost every drive cycle, multiple times per week or daily.
When: Within first 5–10 minutes of driving; resolves after 10+ minutes of operation
Symptoms owners cite: Headlight flicker followed by dimming or complete failure; Dashboard 'dipped headlight' warning message (left, right, or both); Intermittent failure triggered by acceleration, braking, or road bumps; Headlight restores function after vehicle restart; One or both lights affected, left and right can fail independently or simultaneously
Codes mentioned: Dipped headlight warning (left), Dipped headlight warning (right)
Repairs/costs cited: Audi dealers have attempted bulb replacement, HID ballast replacement, control module replacement, and installation of shims around light housings to reduce vibration. Trial-and-error repair process; headlight assembly replacement suggested at $2,500 per light with no guarantee of fix. Repairs frequently fail to resolve the problem.
Recalls/TSBs owners mention: Audi of America issued multiple Technical Service Bulletins but did not identify a definitive repair. Out-of-warranty repairs are owner responsibility. Class-action lawsuit settlement extended warranty to 5 years/50,000 miles from original purchase (settlement issued 10/2013); vehicles exceeding warranty cutoff require owner-paid repairs even with proof of pre-warranty failure.
Right-side headlight failure
Right headlight specifically fails intermittently, either flickering then extinguishing or dropping to dipped mode. Single-side failure reported across multiple complaint narratives. Failure intermittent with no consistent trigger; can function properly for weeks or months between occurrences, then malfunction multiple times in a single night.
When: Intermittent; can occur 7–8 times over a year and a half, then gap weeks or months
Symptoms owners cite: Right headlight flickers then goes out; Right-side 'dipped headlight' warning message; Headlight remains off until vehicle restart; Intermittent with variable time between failures
Codes mentioned: Right headlight dipped
Repairs/costs cited: Dealers have performed visual electrical connection inspections and suggested xenon bulb replacement. Bulbs test fine. No permanent repair solution identified.
Recalls/TSBs owners mention: Dealers unable to reproduce issue during service visits; claim visual inspections show no faults.
Cold-weather headlight flicker
Headlights flicker on very cold days, with occasional complete failure of left or right light. Owner reported dealer service did not resolve the issue.
When: Occurs on cold days; low-speed driving through neighborhood documented
Symptoms owners cite: Headlight flicker while driving; Left or right headlight turns off completely on cold days; Flickering dangerous at low speeds with reduced visibility
Repairs/costs cited: Audi dealer service attempted but condition persists.
Synthesized from 18 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 10 most recent
Intermittent headlight malfunction. Over the course of a year and a half of ownership, the right headlight has malfunctioned (turned off), with no consistent cause apparent. The specific error message that appears in the driver information screen is "right headlight dipped". This condition is both unsafe, and illegal - as many states will issue a traffic violation for driving with a…
The headlights flicker, then the dash says they are dipping, then they go out. If you stop the car turn it off then back on the lights come back on, only to do it again. There seems to be wide spread reports of this happening with these Audi's and the HID lights. *tr
Right headlight sporadically shuts off (I.e. Dips) while driving. You have to turn both lights off and on when you are driving to make it function again. It is always the right headlight and sometimes will function properly for a month and then malfunction several times in one night. This is a safety hazard especially when you need to reactivate the light while in traffic at high speeds or when…
Right front headlight flickers and fails. Vehicle must be shut off and restarted in order to get headlight working again. *tr
Right headlight flickers and goes out repeatedly. *tr
Both headlights shutoff while driving at night and would not come back on. Bulbs are still in good condition. Error code 'dipping headlight' this is a known safety problem with Audi and is extremely unsafe for the driver and other vehicles on the road. *tr
I own a 2006 Audi s4 with bi=xenon HID lights. Numerous amounts of times the indication comes up that I have a dipped headlight. This in turn is because the headlight is off and I'm driving at night. This safety violation will end up costing me every time I go to the dealership to get new parts installed and labor and the high probability of a ticket for having a head light out from the police…
This issue affects Audi a4 and s4 vehicles with HID headlights. One or both of the headlights repeatedly fails while driving. This is not an issue with the headlight bulb. If the operator turns off the ignition after one or both of the headlights fails, and then immediately restarts the car, both headlights will operate properly. The issue occurs primarily within the first 5 to 10 minutes…
Passenger headlight starts on. After a few minutes I get a headlight dipped error and the passenger headlight turns off.
Dipped headlight issue. The event is happens almost every night and multiple times. My headlights of my 2006 Audi s4 continue to go out as I drive often at highway speeds. This is a common complaint which Audi has chosen not to fix. Their multiple service bulletins never fixed the issue and now that my car is out of warranty they chose to replace cars headlights with this issue. I only have…
Had lighting trouble with your 2006 Audi S4?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the lighting problem on the 2006 Audi S4?
It's a documented issue but not catastrophic. 18 complaints have been filed. Repairs average $250 and most owners catch it before it causes a breakdown.
At what mileage does the lighting typically fail?
Across the 16 complaints that reported odometer mileage, most lighting failures cluster between 36,000 and 64,500 miles, with the median around 49,650. A quarter of owners report trouble before 36,000; a quarter make it past 64,500. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $250 for lighting repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to lighting?
No active recalls currently cover lighting issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2006/Audi/S4.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.