Skipping manufacturer procedures does not automatically void your factory warranty. At Auto Collision Center of Exeter, we know federal law protects you here. A manufacturer must prove a specific repair caused the failure before it can deny a claim. Our own workmanship warranty for auto collision repair in Exeter, NH, is a separate matter entirely.
Key Takeaways
- Magnuson-Moss Warranty Act: a 1975 federal law barring warranty voids over independent repairs or non-OEM parts.
- Burden of proof: a manufacturer generally must demonstrate that a specific repair or replacement part caused the failure before denying warranty coverage for that issue.
- Two separate warranties: your vehicle’s factory warranty and a shop’s workmanship warranty cover different things.
- Documentation matters: repair records, parts invoices, and calibration logs are what a manufacturer reviews during a dispute.
What Does the Magnuson-Moss Warranty Act Say About Aftermarket Repairs?
The Magnuson-Moss Warranty Act is a federal warranty law enforced by the FTC (Federal Trade Commission). It generally bars manufacturers from conditioning warranty coverage on the use of independent repairs or non-OEM parts, unless the manufacturer provides those parts or services for free or obtains an FTC waiver.
The Anti-Tying Rule Behind This Protection
FTC guidance confirms that manufacturers generally cannot require consumers to use a specific brand of replacement part or repair facility to maintain warranty coverage unless the manufacturer provides those parts or services free of charge or receives an FTC waiver. This is often called the anti-tying provision. A manufacturer cannot deny your claim simply because you used a trusted aftermarket part instead of an OEM part. The manufacturer still needs to connect that specific part to the failure.
Car collision repair procedures fall under this rule, too. A manufacturer cannot deny coverage because a shop welded a panel instead of bolting it. The method itself would need to have caused the problem being claimed.
Which Warranty Is Actually at Risk?
Two different warranties come up in this conversation, and they are not the same thing.
| Warranty Type | Who Backs It | What Actually Voids It |
| Factory or Manufacturer Warranty | The vehicle manufacturer | Only if a specific part or procedure is proven to have caused the failure |
| Auto Collision Center of Exeter Limited Lifetime Warranty | Our shop | No listed voiding conditions; it covers workmanship and paint while you own the vehicle |
Parts we install carry the manufacturer’s own warranty terms, separate from our workmanship coverage. Knowing which warranty applies matters, but proving compliance is what actually protects it.
What Documentation Proves a Repair Followed Manufacturer Procedures?
Documentation is the record that a manufacturer actually reviews during a warranty dispute. At Auto Collision Center of Exeter, we build that record on every vehicle we repair.
- Pre-repair diagnostic scan: we run Snap-On and Bosch scans before any panel is touched. This captures every fault code tied to your vehicle’s systems.
- Frame measurement report: our Spanesi laser system compares your vehicle’s structure against factory tolerances and produces a documented reading.
- Parts invoice: we record whether each part is OEM or a trusted aftermarket alternative. This is a detail a manufacturer checks early in a dispute.
- Post-repair scan and calibration record: a final scan confirms no fault codes remain. Any ADAS recalibration is coordinated through our certified partners and documented in your file.
Affordable collision repair should never mean skipped documentation. Thorough collision repair protects your warranty and costs less than a denied claim later.
Bryan Dinger, our general manager, brings more than twenty years of collision repair experience to every file we build. Our team carries fifty years of combined experience across collision repair and refinishing. That experience shapes how we document every certified collision repair we complete.
Frequently Asked Questions
Does Auto Collision Center of Exeter repair vehicles still under a manufacturer’s warranty?
Yes. We repair vehicles under active manufacturer warranties and document every procedure, so your coverage stays protected.
What should I do if a dealer denies a warranty claim after an independent repair?
Ask for the denial in writing. Under the Magnuson-Moss Warranty Act, the dealer has to show that the specific repair caused your vehicle’s failure.
Does the limited lifetime warranty change if I have other work done elsewhere later?
Our limited lifetime warranty covers workmanship and paint only. It lasts for the entire time you own your vehicle. Work performed elsewhere falls outside that coverage.
Schedule Certified Collision Repair at Auto Collision Center of Exeter
If you need collision repair services in Exeter, NH, call Auto Collision Center of Exeter at (603) 772-0214 or email accofexeter@gmail.com. We document every procedure so your warranty stays exactly where it belongs, with you.