Service Bulletin - The headlight seal may become damaged from a misadjusted hood. Damage to the headlight seal may lead to moisture condensation building up in the headlight.
full bulletin at NHTSA ↗2021 Honda Ridgeline lighting problems
moderate 14 complaints filed with NHTSA · avg repair $250 · see lighting across all vehicles →
Complaints
14
Recalls
0
Avg fix
$250
What stands out
No new NHTSA lighting complaint has been filed on this vehicle in over 3 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.
Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021 Ridgelines with a customer complaint of moisture in headlight. To better understand the cause of this condition, AHM would like to inspect the vehicle before you attempt a repair of any kind.
full bulletin at NHTSA ↗Service bulletin - One or more accessory running board lights are flickering or not working. The running board light assembly is faulty. * Denotes Required Fields TSB ID : TSB Date : Calendar for date entry assistance Source : All Manual EMAIL MCA Portal
full bulletin at NHTSA ↗Dealer message - American Honda Motor Co., Inc. (AHM) is searching for certain 2019-2020 Passports, Pilots & 2021 Ridgelines with a customer complaint of moisture in the headlight. To better understand the cause of this condition, AHM would like to inspect the vehicle before you attempt a repair of any kind.
full bulletin at NHTSA ↗Dealer message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021 Ridgelines with a customer complaint of moisture in the headlight. To better understand the cause of this condition, AHM would like to inspect the vehicle before you attempt a repair of any kind.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The 2021 Ridgeline automatic high-beam system is consistently reported as malfunctioning across 14 complaints. Owners describe erratic cycling where high beams activate for seconds, shut off for ~10 seconds, then repeat regardless of road conditions. The feature fails to engage on dark roads, stays active or flashes when oncoming traffic is 100–300 feet away, and deactivates in response to reflective road signs and mile markers instead of detecting actual vehicles. Multiple owners note the system did not activate below 45 mph. Comparison complaints reveal the 2019 and earlier models worked reliably; Honda moved from a dedicated automatic high-beam camera to a shared multi-purpose camera in 2020, and owners tie the degradation to this architectural change.
Dealers have been unable to fix the issue despite multiple service visits. Honda provides no service bulletins or repair guidance, and customer service offers no solutions. Owners report widespread complaints in Ridgeline forums and Facebook groups, indicating this is not isolated. The flashing behavior creates distraction and has prompted owners to disable the feature entirely to avoid blinding oncoming drivers. One complaint documents moisture inside the driver-side headlight housing at 43,928 miles, though this was addressed by manual cleaning.
Same Honda Ridgeline lighting reports on nearby years: 2020 · 2022 · 2023 · 2024
Failure modes owners describe
Automatic high-beam system malfunction — erratic activation and false trigger
The adaptive/automatic high-beam feature activates inappropriately in response to reflections from road signs, mile markers, and other road infrastructure, and fails to deactivate reliably when oncoming traffic is detected. The system appears to lack adequate filtering logic to distinguish between actual oncoming vehicles and reflective road objects.
When: Since new (April 2021 onward); affects 2020 and later model years with merged multi-purpose camera architecture
Symptoms owners cite: High beams activate for seconds then turn off for ~10 seconds in cycling pattern; High beams fail to engage when needed on dark roads; High beams remain on or flash when oncoming traffic is 100–300 feet away; System turns off/flickers in response to reflective road signs and markers; Flashing behavior causes driver distraction and potential road-rage incidents; Feature does not activate below 45 mph
Repairs/costs cited: Dealers unable to resolve; multiple repair attempts across different dealers yielded no fix. No parts replacement or software update guidance available from Honda. Owners resort to disabling feature via settings.
Recalls/TSBs owners mention: Honda provides no service bulletins or recalls for this issue as of the complaint dates. Dealers confirm the behavior but state 'no guidance from Honda' on how to correct it. Honda Customer Service has not provided solutions.
Moisture intrusion in driver-side headlight housing
Moisture accumulated inside the driver-side headlight lens/housing, requiring disassembly and manual moisture removal. Condition occurred at relatively low mileage.
When: Approximately 43,928 miles
Symptoms owners cite: Visible moisture/condensation inside headlight assembly
Repairs/costs cited: Owner disassembled and manually blew out moisture; no further repairs documented or needed at time of complaint.
Recalls/TSBs owners mention: Manufacturer confirmed VIN not under recall.
Synthesized from 14 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 4 most recent
The auto-highbeam feature does not operate properly. The highbeams are frequently engaged when an oncoming car is no more than 300 feet away. This irritates the oncoming motorist and creates a dangerous situation causing risk of a crash. The auto-highbeams also have a tendency to switch to low beam at inopportune times because the glare from roadside signs is recognized as an oncoming motorist.
Headlights don't dim in the auto function when there is oncoming traffic. Lights cycle from dim to bright when no oncoming traffic is present. This is an ongoing problem that presents every time the vehicle is driven at night.
The 'automatic high beam/low beam' function is totally worthless. Any reflective sign along the road turns the high beams off. The system on my earlier 2017 Honda Ridgeline worked almost 100%. This 2021 system basically doesn't work. In addition you must reach 45 mph before it activates. On many of the back roads that I travel on, the speed limit is less than 45 mph. I have heard that Honda…
1) The automatic high beam functionality, and it is available for inspection 2) Safety of others is out at risk, as the automatic high beams will turn on even if an incoming car is detected, and in most cases will flash off and on automatically with oncoming traffic, resulting in the oncoming driver being blinded and unable to operate their vehicle safely. 3) It’s been inspected by the dealer,…
Had lighting trouble with your 2021 Honda Ridgeline?
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 2021 Honda Ridgeline?
It's a documented issue but not catastrophic. 14 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 14 complaints filed, lighting issues most often appear around 22,514 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/2021/Honda/Ridgeline.
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.