My low beam on the driver's side of my VW Golf has been flickering constantly since yesterday evening. I've already changed the bulb, but the problem persists. Could it be an electrical issue or is it the switch itself?
If the flickering is still there after changing the bulb, it's probably an electrical issue - either poor contact in the socket, a loose cable, or a faulty ballast. When you changed the bulb, did you also check whether the socket is clean and the contacts are sitting properly? With modern Golfs, moisture problems inside the headlight itself can also cause contact issues, so I'd take a look to see if water is getting in anywhere.
Don't rush to the workshop first - check the socket yourself. Unscrew the new bulb again and see if the contacts in the socket are clean and not oxidized. Sometimes a little polishing with sandpaper does the trick. If that doesn't help, there could be a loose connection in the headlight connector itself, which you can reach from the back - just take it out and push it back in firmly. That often fixes flickering issues like this.
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