Left Low Beam Fuse keeps blowing?

2013 TOYOTA HIGHLANDER
196,500 MILES • 3.5L • V6 • 2WD • AUTOMATIC
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RDAVIS1
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  • 1 POST
fuse 42 keeps blowing. just blew two 15A spares testing it. they blow immediately. i can’t turn on switch and step around see if bulb comes on before it blows.
Sep 15, 2025 at 8:02 PM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
The first thing I need is to verify Fuse 42 is TAIL or PANEL circuit (it should be in your fuse box lid label). Next, I would check the trailer wiring connector which are famous for shorting out. Then turn the headlight switch on running lights only to see if the fuse blows, if so I would start buy removing the bulbs to check the sockets. They can overheat and melt causing the short. Here is a guide to help.

https://www.2carpros.com/articles/no-tail-lights-exterior-running-lights-tail-lights-out

Please give me more information to help you. Upload images of anything you find that may cause the problem please.
Sep 16, 2025 at 11:34 AM
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