brake light wiring diagrams please?

2011 HYUNDAI SONATA
170,000 MILES • 2.4L • 6 CYL • 2WD • AUTOMATIC
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DMELENDREZ
  • MEMBER
  • 1 POST
Brake light on back windshield does work. Bulbs and fuses are good. Could it be the brake switch?
Oct 19, 2019 at 8:38 AM
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STRAILER
  • ASE Certified Mechanic
  • 54,837 POSTS
  • ASE Certified Mechanic
Hello,

It could be yes there are two wire feeds through the switch. here is a guide to help you test the switch and the wiring diagrams below so you can see how the system works:

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Use the continuity feature. Also check for power at the fuses STOP LP and ECU4

https://www.2carpros.com/articles/how-to-check-a-car-fuse

If all good the the IP junction box is bad. Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.

Mar 22, 2021 at 10:50 AM
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