Why is my headlight not working with a new bulb?

For example, in cases where you have replaced the light bulb, one of the headlights is not working. Most headlight failures are caused by a blown a fuse. Other common problems include bad relay, switch, or module. Wiring problems, especially inside the headlight, can also cause a headlight to stop working.

What causes headlight to keep blowing?

This is due to spikes of high voltage jumping through the system which in-turn blow the bulb filaments and/or headlight fuses. You can perform a simple test to check if the voltage regulator is faulty, however you’ll need another person to help you rev the engine whilst you take a multimeter reading.

Why are my low beams so dim?

Over time, your lenses can become oxidized—leading to a foggy, cloudy, or yellowed lens appearance. The opaque shade caused by oxidation does not let as much light pass through as clear lenses. This will leave your headlights looking dim, even if you have brand-new bulbs.

Do headlights run on a fuse?

Like all electrical systems, the headlights in your vehicle have a fuse in the circuit to prevent too much electricity from reaching the bulb. There will also be a headlight relay that switches power from the low beams to the high beams. If the fuse goes bad, you likely won’t have any headlights at all.

Can adaptive headlights on Audi A3 be fixed?

Fixing adaptive headlights may seem difficult, but sometimes it is a simple fix. At the very least, you can save yourself the diagnostic fees at the dealer by following our step-by-step diagnostic. This article applies to the Audi A3, A4 B7, A4 B8, A6 C5, A6 C6, and Q5/Q7 (2003-Present)

Are Audi dealerships bad at fixing headlight bulbs?

The truth is that even Audi dealerships are notoriously bad at fixing this problem. Their remedy is typically to suggest replacing the bulbs and ballasts at full retail price, costing you several thousand dollars for a job that is something you could fix yourself for a tenth of the price.

What kind of Lights does Audi A4 Avant have?

I have UK 2008 audi A4 Avant. Upon start up with main beam on the driver side light goes off after a few minutes. Get a dipped driver light warning. Turn car off and let it cool and it’s all good again for a few minutes. Lights are xenon.

What kind of headlights does the Audi A8 have?

Soon as you engage high beams it sweeps left and right massively with cornering and low beam dead centre nothing else. It’s an Audi A8 D4H 2011 with the Hella Apdaptive Xenon Lights.