Why does high beam work but not low beam?
Headlight Fuse or Relay These are designed to ‘blow’ and break the circuit if too much power comes through them. Most headlight systems are also designed with a relay that switches the power between low beam and high beam headlights. If this relay goes bad, it could allow power to the high beams, but not the low beams.
Are brights and low beams the same bulb?
In the past, high beams and low beams were separate bulbs on all cars. Today, that’s not the case. Most modern vehicles have a single bulb with two filaments. One is for the low beams and one is for the high beams.
What cars use a H7 bulb?
Many cars use H7 bulbs as headlights, most notably a variety of BMW, Audi, and Mercedes vehicles.
Why are the low beams in my Subaru not working?
If the low beams in your Subaru aren’t working, it might seem like a good idea to use the high beams–but that can be dangerous, as well. If the high beams work, but the low beams don’t, there are a number of possible causes. Below, we list four of the most common ones. 4. Burned-Out Bulbs
Why are my low beam headlights not working?
If a headlight fuse blows, it could cause the headlights to stop working. Most headlight systems are also designed with a relay that switches the power between low beam and high beam headlights. If this relay goes bad, it could allow power to the high beams, but not the low beams.
What to do if your low beams don’t work?
Either way, if your low beams aren’t working but your high beams are, the first things we check are the bulbs. If you’re thinking of replacing the headlight bulbs yourself, make sure you’re familiar with the correct installation procedure for the type of bulb you’re replacing.
Why are the headlights not turning on in my Subaru?
Bad wiring can cause a fuse to blow, but it can also manifest itself in many other ways. Even if the fuse is still intact, a problem with the wiring in your Subaru could cause the headlights not to turn on. Because the wiring is so complex, it’s best to leave these repairs to the people who really know what they’re doing.