Published June 30, 2025
Recall vs TSB: Understanding Technical Service Bulletins
Vehicle owners often confuse recalls and Technical Service Bulletins (TSBs), but they are fundamentally different. Recalls address safety defects and require free repairs. TSBs are repair guidance documents for known issues that may or may not involve safety. Understanding the difference can save you money and help you advocate for your vehicle.
What Is a Safety Recall?
A safety recall is a formal action issued when a vehicle or vehicle equipment has a safety defect or does not comply with a federal motor vehicle safety standard. Recalls are governed by the National Traffic and Motor Vehicle Safety Act, which requires manufacturers to notify all registered owners and repair the defect at no cost. NHTSA oversees the recall process and can order recalls if manufacturers do not act voluntarily.
Key characteristics of a recall: the manufacturer must notify all owners, repairs are always free regardless of warranty status, and NHTSA monitors completion rates. Learn more about the full recall process.
What Is a TSB?
A Technical Service Bulletin is a document issued by a manufacturer to its dealer network describing a known issue and the recommended repair procedure. TSBs are internal technical guidance — they tell the dealership mechanic how to diagnose and fix a specific problem that the manufacturer has identified through warranty claims, quality data, or engineering analysis.
TSBs cover a wide range of issues, from minor annoyances (rattles, squeaks, software glitches) to more significant problems (drivetrain issues, premature part wear). The key distinction is that the manufacturer has not determined that the issue constitutes a safety defect, so the recall notification and free-repair requirements do not apply.
Key Differences
The most important differences between recalls and TSBs relate to owner rights. With a recall, the manufacturer must proactively notify you and fix the problem for free. With a TSB, you typically need to bring the problem to the dealer's attention, and the repair may not be free if your warranty has expired.
TSBs also differ from recalls in their regulatory status. NHTSA does not issue TSBs — only manufacturers do. However, NHTSA does collect and publish TSBs in its database, making them available for consumer research. This is important because a vehicle with many TSBs may indicate quality issues that have not risen to the level of a safety recall.
When TSBs Become Recalls
Sometimes a problem initially addressed by a TSB is later upgraded to a full safety recall. This typically happens when NHTSA determines that the issue poses an unreasonable risk to safety — for example, when a TSB-addressed problem is linked to crashes or injuries. The NHTSA investigation process may use TSB data as evidence when evaluating whether a safety defect exists.
How to Use TSB Information
TSBs are valuable for vehicle owners because they confirm that a manufacturer is aware of a specific problem and has a fix for it. If you are experiencing a known issue covered by a TSB, you can reference the TSB number when visiting the dealer, which may expedite the diagnosis and repair process.
When buying a used car, checking both the recall history and TSB history gives you a more complete picture of the vehicle's known issues. A vehicle with multiple TSBs for the same system may indicate a design problem that could lead to ongoing maintenance costs. See also our guide to how recalls work.
Frequently Asked Questions
A TSB is a document issued by a vehicle manufacturer to dealership technicians describing a known problem and the recommended repair procedure. Unlike recalls, TSBs are not mandated by NHTSA and do not require the manufacturer to notify owners or provide free repairs.
Not always. If the vehicle is under warranty, the TSB repair is typically covered. If the warranty has expired, the owner may need to pay for the repair. However, some manufacturers extend warranty coverage for problems addressed by TSBs, especially if the issue is widespread.
Yes. If a problem addressed by a TSB is later determined to be a safety defect, it can be escalated to a full recall. This happens when NHTSA determines that the issue poses an unreasonable risk to safety, which is the legal standard for a recall.
NHTSA maintains a TSB database at NHTSA.gov where you can search by year, make, and model. Manufacturer dealer networks also have access to all active TSBs. Third-party services like Consumer Reports and various automotive websites also track TSB data.