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Is this both headlights or just one that are going out fast?
Actually, it's just the drivers side low beam.
We just replaced all 4 (upgrading to the ultra bulbs and you can really tell the difference at night) in Oct of last year and that one bulb went out this morning.
The bulbs do have a 1 year warranty from Sylvania, I filled out the form on the website, waiting to see what happens.
Also, I told her to stop using the Auto Headlight feature. Having the low beams come on every time you open a door can't be helping.
It could just be a fluke that the bulb burned out. I'd check that the healight is secure to the car and not vibrating. Once you get a replacement bulb, cut the pin out of the old bulb. See if the pin has drag on both bulb connectors to ensure the socket didn't get spread apart. When using dielectric grease, you don't want that to get into the pins that can cause a poor contact, but where the weather strip seals the bulb, so a light coating on the rubber of the seal in the socket will be enough to keep water out. Spraying some electrical contact cleaner to get out the dielectric grease can help.
That one lamp has never lasted more then 6 months since we got the car in 2021. It's just that one location. It had less then 20k on it when we got it and it is still like new. We had the windows done with 3M Ceramic IR (not shown) and put an OEM bra (sorry, nose guard) on it right away. I also added a power outlet panel in the trunk. Other then that and switching to goodyear tires, it's still stock.
I'm a retired auto tech and we do not skimp on car care. We drove our last Honda (Civic) for 15 years and it had just under 500k on it when we sold it.
I wasn't aware you were an auto tech. I typically assume most are new at DIY work on here.
If the headlight is secure and the connection is tight on the pins, then you almost have to look at wiring. Voltage drop tests on the power and ground wires might give you a hint. You can clean the ground that is likely behind the bumper on that side of the car. You can swap the L and R headlight relay to see if the other bulb burns out prematurely?
If the pin fitment is tight on the connector, then you'll have to test the current to that bulb. You'd almost need an oscilloscope and an amp clamp to see if the current is fluxuating/noisy to the bulb vs the other side that doesn't burn out. Not much else could cause the bulb to quickly burn out other than constant heating/cooling of the filament.
2017 Accord headlamps constantly burn out
