What to Do during a Toyota Tacoma Turn Signal Assembly Malfunction
Your Toyota Tacoma turn signal assembly is composed of four blinking lights, which are responsible for warning other drivers behind you that you are about to make a turn or change lanes. It would be confusing and dangerous if you do not have a properly functioning turn signal assembly-there would be no way for other drivers to figure out how to adjust correctly to the changes in your vehicle's movements. So it's important to regularly check it for defects. Should your turn signals stop working, consider looking at the following reasons:
Blown signal fuse
It is very common for the turn signal assembly to fail due to a blown fuse. You would have to open the fuse box and locate the turn signal fuse, which you must pull out. Once the fuse is out, check if its metal link is connected. A broken link means a blown fuse. Replace the fuse immediately.
If you notice the turn signal on one side to be working just fine and the other seems to have a problem, check the defective turn signal's bulb if it is burnt. To determine a burnt bulb, look at it closely and see if dark matter is present at its base. If that's the case, you can try cleaning it off to improve connection. However, it would be best to get a replacement instead. That way, you can be sure that the bulb is capable of functioning well.
Defective turn signal switch
Your turn signal assembly consists of flashers, which are responsible for the turn signal's actual blinking. Find out if your turn signal switch is defective by testing a flasher's prongs with a test wire. You would have to unplug the flasher and apply a test wire on the horizontal prong and another wire to the vertical prong. Listen closely for a click. If there is none, connect the wire to the other vertical prong and test it. If you still can't hear a click, it's an indication that you need to replace your flasher. However, if replacing it doesn't seem to work, the turn signal switch could be in a really bad condition.