Right to Repair Laws: Parts, Documentation, and Warranty Effects

Two different laws are usually at work when a repair goes wrong, and readers mix them up constantly. The first is a state right-to-repair statute, which can require a manufacturer to sell parts, tools, diagnostic software, and repair documentation to owners and independent shops. The second is the federal Magnuson-Moss Warranty Act, which limits a manufacturer's ability to condition warranty coverage on using its own parts or service. Access and warranty are separate questions, and which one your problem sits in decides who you complain to.

Two engines, pulling in different directions

The access engine is new, state-level, and uneven. One state's statute can require a manufacturer to publish service manuals and sell diagnostic tools on fair and reasonable terms while the neighboring state requires nothing. There is no national right-to-repair statute for consumer goods generally.

The warranty engine is old, federal, and nationwide. Magnuson-Moss has applied to consumer product warranties for decades, and the Federal Trade Commission enforces it. It does not force anyone to sell you a part; it limits what a warrantor can demand before honoring the warranty it already gave.

So a consumer in a state with no repair statute still has federal warranty protection, and a strong state repair statute will not win a warranty argument.

What a state access statute typically does — and does not — require

State statutes share a family resemblance. They generally require manufacturers to make available to owners and independent repair providers the same parts, tools, and documentation they give their own authorized networks, on fair and reasonable terms.

Coverage is where they diverge sharply. Some cover consumer electronics and home appliances; others are limited to a single sector such as agricultural equipment, powered wheelchairs, or automobiles. New York, Minnesota, California, Colorado, and Oregon are commonly cited as early adopters, and their statutes differ in scope, effective dates, and exclusions. Treat those as examples, not a template, and read the statute that applies where you live. As of mid-2026 the landscape is still expanding.

Automotive repair information has its own long-running track, separate from the newer consumer-electronics statutes, running through industry agreements and state ballot measures — including a Massachusetts ballot-law fight over telematics data, the wireless diagnostic information a modern vehicle transmits, which produced extended litigation. That question is unsettled. A different vehicle problem, a shop that will not release the car, is covered in our piece on repair estimates, authorization, and mechanic's liens.

The federal warranty rule most people have heard wrong

Magnuson-Moss prohibits tie-in service provisions in consumer product warranties: a warrantor generally cannot condition coverage on the consumer using the manufacturer's branded parts or authorized service network. The exceptions — where the manufacturer provides the part or service free, or where the FTC has granted a waiver — are narrow.

This is why "warranty void if removed" stickers are generally not lawful as blanket conditions, and the FTC has publicly pressed companies over the practice. Its consumer information site and business guidance both address warranty obligations, and warranty claims in advertising fall under the FTC's advertising rules.

What the statute does not do is force a manufacturer to keep covering a product it did not break. That distinction is where nearly every dispute lives.

Watch out: A manufacturer may lawfully deny coverage for damage an independent repair actually caused. The question is causation, not who held the screwdriver. If a third-party battery swap left a torn ribbon cable, the display failure that follows is on the repair. If the device later develops an unrelated software fault, refusing coverage because the case was opened is a much weaker position.

Where repair still runs into walls

Even in states with access statutes, three obstacles recur, none fully solved.

Software locks and parts pairing. A genuine replacement part can be rejected unless it is cryptographically authorized. Some state statutes address pairing directly; many do not, and a parts-supply obligation means little if the part will not activate.

Copyright and anti-circumvention. Federal copyright law restricts circumventing technological measures that control access to protected works, including embedded software. The U.S. Copyright Office runs a periodic rulemaking granting temporary exemptions, and repair-related exemptions have been granted for several device categories. They are time-limited — check the current cycle at copyright.gov rather than assuming a past exemption still applies.

Trade-secret objections. Manufacturers argue that schematics and diagnostic logic are trade secrets, and most statutes carve out genuinely proprietary information. The same tension drives source-code escrow in vendor agreements.

A fourth friction point is contractual. Terms of service, license agreements, and activation click-throughs frequently restrict repair and modification. Whether such a term binds the buyer of a physical product is a separate question courts have not answered uniformly.

Building a record when access or coverage is refused

Repair disputes are won on documentation, because the decisive facts are contested after the fact. Gather these before complaining to anyone.

• Proof of purchase, the model and serial number, and the date of first sale.
• The written warranty text as it appeared at purchase, not a current web version.
• Photographs of the device before and after the repair, including internal condition.
• The shop's written estimate and invoice, describing exactly what was replaced.
• Part numbers and supplier receipts for every component installed.
• The manufacturer's denial in writing, with the stated reason quoted in full.
• Any request for parts, tools, or documentation, and the response or silence that followed.
• Dates, names, and case reference numbers for every call.
• Diagnostic outputs or error codes recorded before and after the work.

Where to send the complaint depends on the engine. A refusal to sell parts or release documentation goes to the state attorney general or the agency the statute names. A warranty denial resting on tie-in conditions is federal territory and goes to the FTC, alongside any state-law remedy. If the product is unsafe rather than merely broken, that is a third track — see our guide to recall reporting duties and corrective action plans.

Note: Used goods complicate this. A product sold "as is" may carry no warranty at all, which changes the analysis; the mechanics are in our piece on as-is sales and undisclosed damage. State implied-warranty rules and lemon statutes vary, and some states restrict as-is disclaimers more than others.

Common questions

Can a manufacturer refuse warranty service because an independent shop opened the product?

Generally not on that basis alone. Under the federal Magnuson-Moss Warranty Act, a warrantor cannot ordinarily condition coverage on using its own branded parts or authorized service unless it supplies them free or has an FTC waiver. What it can do is decline coverage for damage the outside repair caused. The refusal should identify the specific damage and connect it to the work performed, not point at a broken seal.

My state has no repair statute — is there anything I can still use?

Yes, though less. Federal warranty protection applies nationwide regardless of state repair law, so tie-in conditions remain restricted. State consumer-protection statutes may reach misleading warranty statements. And nothing stops you buying parts on the open market or using an independent shop; what is missing is the affirmative duty on the manufacturer to supply parts and manuals, which is what the state statutes create.

Why can't my repair shop get the diagnostic software it needs?

Usually one of three reasons. The device class may fall outside your state's statute, or your state may have none. The manufacturer may treat the diagnostic logic as a trade secret, which most statutes partly protect. Or the software may be licensed only to authorized dealers on terms the shop cannot meet. Ask in writing what the licensing terms are — the written refusal is what a state enforcement agency wants to see.

Are aftermarket parts a problem for coverage?

Not automatically. A warrantor cannot generally require its own branded parts as a blanket condition of coverage. It can still deny a claim where a specific aftermarket part caused the failure — an underspecified power supply that damaged a board, for example. Keep the receipt and specification sheet for every part installed, since showing that a part met the original specification is the practical answer to that argument.

Working a repair or warranty refusal, in order

1. Identify which engine applies. Refused parts or documentation is a state access question; refused coverage is a federal warranty question. Some disputes are both.
2. Read your state's statute, not a summary. Check covered device classes, the effective date, exclusions, and who enforces it.
3. Get the denial in writing. Ask for the specific reason and the damage relied on; a verbal refusal is hard to challenge.
4. Assemble the record from the documentation list above, while the parts and invoices are still available.
5. Escalate inside the company first. Complaint processes resolve a fair share, and the paper trail helps either way.
6. File with the right agency. State attorney general for access failures, the FTC for tie-in issues, both where they overlap.
7. Consider a small-value claim. Where the amount is modest, small claims can beat any regulatory route.

Practical step: Before authorizing any out-of-warranty repair, ask the shop in writing to record the device's condition on intake, with photographs. Establishing what was already broken is the most useful evidence in a later causation argument.