WarrantyKeepUpdated 2026-07-18
What Actually Voids a Warranty (and What Doesn't)
Fewer things void a warranty than companies imply. Here's what genuinely does — and the common myths that don't.
A warranty is genuinely at risk when damage comes from misuse, abuse, an accident, or an act of nature; when an unauthorized repair or modification actually causes the fault; when the serial number is altered or removed; or when you can't show proof of purchase. Note the pattern: for repairs and parts, it's not the act itself but proof that it caused the failure that matters.
Several 'warranty voiders' are largely myths in the US. Under the federal Magnuson-Moss Warranty Act, a manufacturer cannot void your warranty simply because you used an independent shop, installed an aftermarket or recycled part, or performed your own routine maintenance — unless it can prove that specific part or work caused the problem. Tie-in clauses that require you to use only branded parts or service are generally prohibited.
'Warranty void if this seal is broken' stickers are also generally unlawful under the same act — the FTC has publicly warned major companies that these stickers are deceptive. Opening a device or breaking such a sticker does not, by itself, legally void your coverage.
Cosmetic wear normally doesn't void coverage either, and the act bars a maker from denying a claim over unrelated cosmetic damage unless it can show that damage caused the internal failure. When in doubt, ask the company to point to the exact clause and the causal link — often it can't.
FAQ
What voids a manufacturer warranty?
Do 'warranty void if removed' stickers actually void my warranty?
Related
General information, not legal advice — confirm specifics with the manufacturer.
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