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Lexus SC Ignition Interruption

Hi, my 2009 Lexus SC with a gasoline engine won't start. The error memory shows a Terminal 15 ignition positive interruption. I suspect it's a defective cable or plug connection. Has anyone else experienced this?

A 2009 Lexus SC is experiencing starting issues, with an error indicating a Terminal 15 ignition positive interruption. The suspected cause is a defective cable or plug connection. A similar case suggested checking the wiring harness around the battery terminal for corrosion or loose connections. A workshop visit is recommended for a thorough diagnosis and repair.

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4 comment(s)

I had a similar issue with my SC. Check the wiring harness around the battery terminal. Any sign of corrosion or a loose connection?

Thanks! I'll check that. Was your error message exactly the same? And did you notice any voltage drop before it completely failed?

Yes, the error was the same, and I did see a slight voltage drop beforehand. Honestly, I would recommend a workshop visit.

Appreciate the confirmation and advice. I'll take it to a workshop, as you suggested. The repair cost was 95€.

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LEXUS

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