Left Low Beam Fuse keeps blowing?

Tiny
RDAVIS1
  • MEMBER
  • 2013 TOYOTA HIGHLANDER
  • 3.5L
  • V6
  • 2WD
  • AUTOMATIC
  • 196,500 MILES
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.
Monday, September 15th, 2025 AT 8:02 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
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.
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Tuesday, September 16th, 2025 AT 11:34 AM

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