Why most engineers fail their first ISO 26262 audit (and how to not be one of them)
I've reviewed a lot of automotive safety audits. The failures almost always come from the same 3 mistakes.
1. Treating HARA as a paperwork exercise
Your Hazard Analysis and Risk Assessment is the foundation of your entire safety case. If it's generic or copy-pasted from a previous project ā auditors will find it. Your HARA needs to be specific to your system's ODD, with real-world use cases your team actually analyzed.
2. Misunderstanding ASIL decomposition
ASIL D does not mean "make everything redundant." Decomposition only works when decomposed requirements are genuinely independent ā hardware, software, and execution context. I've seen teams decompose ASIL D into two ASIL B elements that share the same microcontroller. That's not decomposition, that's paperwork.
3. No traceability between safety goals and technical requirements
By the time you're in an audit, every technical safety requirement must trace back to a safety goal, and every safety goal back to a hazardous event. If your toolchain doesn't enforce that automatically, you're manually explaining gaps to an auditor under pressure.
The standard is long (10 parts, 700+ pages) but the core logic is straightforward once you've internalized it.
That's what IEC Mastery is for ā structured coaching for automotive engineers getting fluent in ISO 26262.
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