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Why does my Ford Focus have an error light?

Why does my Ford Focus have an error light?

So I suspect a false alarm, but it’s still annoying to see an error light all the time when driving around. :/ Online I can find similar references (can’t post links though due to forum limits) boo… though no real fixes, except of course to make sure to top off the headlight fluid!

What to do when both head lights stop working at the same time?

When that happens, the operational lifespan of your headlight capsule will be severely compromised, and the only fix is to replace the headlight assembly. When both headlights stop working at the same time, the bulbs usually aren’t at fault.

How is the lighting on a Ford Focus ST controlled?

No offense. These arn’t your ma and pa kinda cars anymore, they are complicated. The lighting on the ST, regardless of trim level is controlled by the BCM (body control module). The BCM uses what is referred to as FET (field affect transistor) to prevent damage to the module while controlling a 12 volt function.

What does it mean when your headlights don’t work?

With that in mind, it can be tremendously useful to start off by looking at whether both, or just one, of your headlights have failed, and whether or not the high or low beam mode still works. When headlights stop working, it’s usually an electrical problem or an physical issue with the bulbs themselves.

No offense. These arn’t your ma and pa kinda cars anymore, they are complicated. The lighting on the ST, regardless of trim level is controlled by the BCM (body control module). The BCM uses what is referred to as FET (field affect transistor) to prevent damage to the module while controlling a 12 volt function.

When that happens, the operational lifespan of your headlight capsule will be severely compromised, and the only fix is to replace the headlight assembly. When both headlights stop working at the same time, the bulbs usually aren’t at fault.

Why are my headlights not working in high beam?

If just one bulb fails to work in either high beam mode or low beam mode, it may be the bulb. Most headlight failures that are limited to just high or low beams are related to a relay or the high beam control switch.

What to do if your HID light bulb is not working?

The easiest way to verify that your HID headlight capsule is bad is to carefully remove both bulbs and replace the one that doesn’t work with the one that does. If the known-good bulb fails to turn on when placed in the other socket, then you’re dealing with a more complicated issue.

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Ruth Doyle