This bulletin provides information when there is a functional issue with the lights in the rear lid; B146C29.
full bulletin at NHTSA ↗2017 Audi Q7 lighting problems
moderate Owners of the 2017 Audi Q7 have filed 103 NHTSA complaints about the lighting at roughly $250 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See lighting across all vehicles →
Complaints
103
Recalls
0
Avg fix
$250
| Model year | lighting complaints |
|---|---|
| 2017 Q7 (this page) | 103 |
| 2018 Q7 | 19 |
What stands out
Lighting accounts for 33% of every owner complaint on file for this vehicle — the dominant problem area across 12 categories tracked.
Owners have filed 103 lighting complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
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 bulletin provides information on visual concerns with the headlight lens.
full bulletin at NHTSA ↗This bulletin provides information when the exterior lights have moisture accumulation.
full bulletin at NHTSA ↗This bulletin provides information pertaining to when there are foreign objects inside of a headlight or taillight.
full bulletin at NHTSA ↗This bulletin provides detailed information on the proper documentation of optical concerns for headlights and taillights.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners of 2017 Audi Q7s repeatedly get dashboard warnings that read "Front [left/right] side marker light defective" paired with a chime alert. The actual marker lights themselves work fine—multiple owners had them confirmed operational by dealers and independent shops. The problem appears to be a software or sensor fault that falsely flags the lights as inoperative.
Audi recall campaign 97CB (NHTSA 16V642000) addressed a side-marker LED malfunction for *some* 2017 Q7 VINs starting November 2016. That recall required a dealer software upload, free of charge. However, the vast majority of affected owners report their VINs are excluded from the recall despite experiencing the identical fault. When the warning appears, it repeats every 10–20 seconds or intermittently, displaying on the instrument cluster and emitting an audible alert. Some owners report the warning triggers specifically when headlights are on or after sundown when the daylight sensor activates.
Owners who took vehicles to Audi dealers received repair quotes ranging from $2,400 to $12,000 (some quoting both sides), with most estimates between $4,000 and $6,000 per side. The dealer diagnosis consistently states the entire headlight assembly must be replaced because the LED marker light is integral and cannot be serviced separately. A few owners were charged around $3,600–$3,655 under extended warranty before it expired.
Some owners have resorted to OBD-II devices to disable the marker lights entirely, eliminating the warning but reducing vehicle safety and failing inspection requirements. Others simply tolerate the distraction. Owners uniformly cite the cost as excessive for what they believe is a software defect, especially since the factory recall remedy was just a software update.
Same Audi Q7 lighting reports on nearby years: 2018
Failure modes owners describe
False side marker light defect warning
Dashboard warning 'Front [left/right] side marker light defective' appears despite the light functioning normally. The fault is a software or sensor error, not an actual hardware failure.
When: Typically between 44,000 and 100,000 miles; often triggered when headlights are on or in low-light conditions after dusk
Symptoms owners cite: Dashboard warning message 'Front left/right side marker light defective'; Audible chime alert accompanying the warning; Warning appears intermittently or repeatedly (every 10–30 seconds); Marker light confirmed operational by visual inspection and dealer diagnostics; Warning often triggers only when headlights are powered on or automatically engage at dusk
Codes mentioned: C11A615, 16V642000
Repairs/costs cited: Audi dealers quote $2,400–$12,000 to replace entire headlight assembly; no individual LED repair available. Some owners charged $3,600–$3,655 under extended warranty. Others use OBD-II devices to disable the lights (reducing safety) or simply accept the warning.
Recalls/TSBs owners mention: Audi recall campaign 97CB (NHTSA 16V642000) issued November 2016 for software update to correct marker light inoperability. Remedy was free software upload by dealer. However, recall applies only to select 2017 Q7 VINs; majority of owners report their VINs are excluded despite having identical fault. Audi customer service has denied coverage and refused to expand recall.
Side marker LED degradation and false resistance reading
LED marker light in headlamp assembly shows increased electrical resistance on CAN-bus monitoring; light may appear dimmer or the sensor detects a resistance change that triggers a fault code even though the LED still illuminates.
When: Around 70,000–100,000 miles
Symptoms owners cite: Light appears dimmer than the opposite side; CAN-bus system registers changed resistance in LED circuit; Dashboard fault warning triggered despite light still illuminating; Both left and right markers may fail sequentially over time
Codes mentioned: C11A615
Repairs/costs cited: Dealers state entire headlight assembly replacement required ($4,000–$6,000 per side); LED cannot be replaced individually. One owner paid $3,655 under extended warranty for one side.
Recalls/TSBs owners mention: Not covered under standard warranty once vehicle exceeds 50,000 miles. Extended warranty may cover if active. Audi denies coverage as a defect; states only remedy is full headlight assembly replacement at owner expense.
Intermittent marker light failures during specific lighting conditions
Some owners report that side marker lights do not illuminate reliably when parking lights or headlights are on, consistent with the software glitch described in recall 97CB but occurring in non-recalled VINs.
When: Variable; some reported at 55,000 miles
Symptoms owners cite: Side marker lights fail to illuminate when parking lights or headlights are activated; Lights may work when tested with diagnostic equipment but not under normal operation; Reduced vehicle visibility at night
Codes mentioned: 16V642000
Repairs/costs cited: No repair completed by some owners. Others disabled lights via OBD-II workaround.
Recalls/TSBs owners mention: Recall 97CB remedy (software update) would address this, but only applies to specific VINs. Owners outside recall range denied free repair.
Synthesized from 103 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 4 most recent
I was driving last night and the "marker light is defective" error came on. This is a well documented defect in the Audi Q7 and many are subject to recall for this issue.
Dash light is on saying “Front right marker light is defective”. However, the marker light appears to be fine. This seems to be a software issue.
There is an issue with this vehicle that seems to have been addressed by Audi recall campaign 97CB (NHTSA campaign ID 16V642000), however it does not apply to all affected vehicles. I bought the car used in 2020 with approx 35k miles on it. At about 55k miles, I began getting a warning on the dash that says “front (left/right) side marker light defective. see owners manual.” It began with the…
2017 Audi Q7 , issue is Left marker light not working according to the dash computer, called Audi , inspected and they said it works but is dimmer than the other side, so needs replaced. $6000.... not doing that, called Audi customer service and they would do a good will for less but still $4000.. I chose to just put up with it since it works and the dash light stays on all the time. Then months…
Had lighting trouble with your 2017 Audi Q7?
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 2017 Audi Q7?
It's a documented issue but not catastrophic. 103 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?
Based on the 103 complaints filed, lighting issues most often appear around 72,158 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
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/2017/Audi/Q7.
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.