fewtrees Posted November 24, 2023 Report Share Posted November 24, 2023 Has anyone had the same? Started the engine and turned the lights on. Dipped beam came on for about 1/5 second then gone. Warnings on the dash say check both left and right dipped beam. I’ve never had both lights go at the same time and seems a bit suspect to me… painful that there aren’t separate fuses for the headlights either and I wonder if an ecu has gone pop! Yet to check the fillaments as it’s freezing outside… Quote Link to comment Share on other sites More sharing options...
mike597 Posted November 24, 2023 Report Share Posted November 24, 2023 Headlight switch? Quote Link to comment Share on other sites More sharing options...
Bike Loon Posted November 25, 2023 Report Share Posted November 25, 2023 I would start with the most obvious and try the bulbs, they are easy access and not expensive. Its possible that they went at the same time / a surge on switch on etc and the cheapest thing to try Quote Link to comment Share on other sites More sharing options...
greenman986s Posted November 25, 2023 Report Share Posted November 25, 2023 Could be the switch itself... Quote Link to comment Share on other sites More sharing options...
Menoporsche Posted November 25, 2023 Report Share Posted November 25, 2023 (edited) Noting his My Ride is a 987.2, not normally known for headlight switch failures - as opposed to the 986, famous for them. I think the switch was redesigned. I agree that both out at the same time suggests not bulbs blowing. Do sidelights work? Main beam? Flash? Edited November 25, 2023 by Menoporsche Quote Link to comment Share on other sites More sharing options...
fewtrees Posted November 25, 2023 Author Report Share Posted November 25, 2023 I took the headlights out both sides. I would suggest if anyone does this to get a non metal brush and brush the slides for any muck before putting them back. My lights were very difficult to come out as there’s fine dirt in the slides.. Inspected the bulbs and both fillaments blown but these are quite recent Phillips bulbs. @Menoporsche Everything else worked fine ie Main/side lights.. Quote Link to comment Share on other sites More sharing options...
Menoporsche Posted November 25, 2023 Report Share Posted November 25, 2023 Both blown. Ok so’s my hypothesis… Quote Link to comment Share on other sites More sharing options...
Bike Loon Posted November 25, 2023 Report Share Posted November 25, 2023 18 minutes ago, Menoporsche said: Both blown. Ok so’s my hypothesis… Occam's Razor Quote Link to comment Share on other sites More sharing options...
Menoporsche Posted November 25, 2023 Report Share Posted November 25, 2023 Or a lightbulb moment. Quote Link to comment Share on other sites More sharing options...
BrianJ Posted November 25, 2023 Report Share Posted November 25, 2023 Beans obviously don't like being dipped. Never tried it myself. Quote Link to comment Share on other sites More sharing options...
EagleStar Posted November 25, 2023 Report Share Posted November 25, 2023 32 minutes ago, BrianJ said: Beans obviously don't like being dipped. Never tried it myself. Sounds like they’ve been baked Quote Link to comment Share on other sites More sharing options...
Menoporsche Posted November 25, 2023 Report Share Posted November 25, 2023 Fried. Quote Link to comment Share on other sites More sharing options...
Arfur Posted November 30, 2023 Report Share Posted November 30, 2023 We had a mk1 qashqai that would blow both headlight bulbs on the first frosty week of the year…every year, within a few days of each other. The auto headlamps would flick on and off rapidly when starting the car and that seemed to be too much shock for the filaments. Replace the bulbs and they would survive until the next year. I wonder if a similar thermal shock situation could have happened to you now that the cold weather is here? Quote Link to comment Share on other sites More sharing options...
Hewy Posted November 30, 2023 Report Share Posted November 30, 2023 Had this happen to me on a Golf GTI a few years back. Standard filament bulbs, turned the lights on when I was on the motorway the dipped side never came on. 100 miles from home so had to turn the head light adjusters down and finish the journey on main beam lights. Both bulbs had blown, replaced them and never had another problem with them again. No idea as to why they went together! Quote Link to comment Share on other sites More sharing options...
The Caped Crusader Posted November 30, 2023 Report Share Posted November 30, 2023 I would suggest getting Osram ultralife bulbs. Porsche fit long life bulbs as standard but they're not fitted routinely after the originals go. Amazon usually sell them. Quote Link to comment Share on other sites More sharing options...
BBB Posted November 30, 2023 Report Share Posted November 30, 2023 1 hour ago, Hewy said: Had this happen to me on a Golf GTI a few years back. Standard filament bulbs, turned the lights on when I was on the motorway the dipped side never came on. 100 miles from home so had to turn the head light adjusters down and finish the journey on main beam lights. Both bulbs had blown, replaced them and never had another problem with them again. No idea as to why they went together! I wonder if this is a slight fault in the relay in the circuit. One bulb fails, the relay then routes a current surge to the other bulb and it blows too. 1 Quote Link to comment Share on other sites More sharing options...
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