Flashing hazard lights would not turn off

2007 BUICK TERRAZA
150,000 MILES • 2.0L • 6 CYL • 2WD • AUTOMATIC
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The hazard lights started to flash and wouldn't shut off. They flashed until the battery ran down.
Jun 15, 2021 at 6:40 AM
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JACOBANDNICKOLAS
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Hi,

I reviewed the wiring schematic and attached them below. Either we have a short to ground, via the tan wire I highlighted, the switch itself has failed and is shorted to ground, or there is an internal fault in the body control module.

What I would suggest is to do would be to disconnect the hazard switch to see if they turn off. If they do, chances are the switch itself is bad.

Here is a link that explains how to check wiring. I thought it may be helpful to you.

https://www.2carpros.com/articles/how-to-check-wiring

Let me know what you find or if you have other questions.

Take care,

Joe

See pics below.

Jun 16, 2021 at 9:53 PM