How to diagnose blown tail lamp fuse

Check the fuse.

  1. If the piece of metal inside the taillight fuse is intact, the fuse is still good.
  2. If the piece of metal looks broken or fractured, the fuse is blown and will need replacing. Use your fingers or a tweezer to take out the fuse. Most new cars have a fuse extractor in the fuse box or in the tool kit.

Can a blown fuse make your tail lights not work?

The most common reason why your tail lights are not working but brake lights are is due to a bad or wrong type of light bulb installed. It can also be caused by a blown fuse, bad wirings, or corroded sockets or plugs. A faulty control light switch could also be to blame.

Which fuse controls tail lights?

The tail light fuse may be located in either the fuse panel in the front passenger side of your vehicle or in the main fuse box under the hood. Once you’ve opened either the panel or the main fuse box, locate the tail light fuse. If you’re unsure which one it is, use the owner’s manual for guidance.

Can a fuse cause a tail light to go out?

The most likely cause for malfunctioning tail lights is a blown fuse, followed by a problem with the wiring or the control switch. Other causes include bad light bulbs, faulty bulb socket, or a bad light sensor. The taillights have separate controls, wiring, and sockets for each of the functionalities.

How do you diagnose tail light problems?

How to Check Each Component

  1. Burnt bulb. For you to confirm your tail lights problem, you should check various elements. …
  2. Damaged or dislocated wiring. To check the condition of your taillight wiring is easy. …
  3. Blown-out fuse. …
  4. Electrical problems. …
  5. check Wiring. …
  6. Check Turn Signal Switch.

Why won’t my tail lights and dash lights work?

Taillight is Out

Often, this is because the two sets of lights share the same fuse and circuit. If all your dash lights stop working at once, the fuse is good, and it’s not the dimmer switch, walk around the back and check your taillights.

Why does my tail light work but not my brake light?

Tail lights are usually powered by the running lights circuit, which is always hot (powered) when the key is in the “on” position. The tail light fuse only has power when the headlight switch is turned on. That’s why your brake lights work but your tail lights don’t – because your headlight switch isn’t turned on!

Why is my tail light fuse keep blowing?

A brake light fuse may keep on blowing out due to a short circuit. Short circuits are almost always the reasons why fuses get blown. In the case of your brake light fuse, a short circuit might have happened due to a bulb that may have already corroded to a point where they can easily create a short circuit.