US 5,442,553 · Granted 1995-08-15
Motorola's 1995 Patent for Remote Car Diagnostics Predicted Today's Connected Vehicles
Imagine your car can talk to the manufacturer's computers without you doing anything. This patent describes a system where your vehicle wirelessly sends performance data to a remote station, mechanics diagnose problems there, and fixes get beamed back to your car automatically. It's the blueprint for how modern connected cars work today.
The plain-English version
What it protects
The claim covers a wireless system that connects a vehicle's microprocessor to a transceiver and memory module, allowing diagnostic data to be stored and periodically transmitted to a remote station for analysis. What's protected here is the method of collecting operating data from a vehicle, sending it over wireless signals, diagnosing problems at a remote location, and transmitting software fixes back to the vehicle's onboard computer—the core architecture of remote vehicle diagnostics and over-the-air updates.
Why it matters
This patent was filed in 1992 and granted in 1995, years before smartphones or widespread internet connectivity existed. Motorola patented the fundamental concept of a vehicle communicating with a manufacturer's servers for diagnostics and remote repair. Today, every connected vehicle—from Tesla to Ford to BMW—relies on this exact principle. The patent establishes the legal foundation for what became a standard industry practice, allowing manufacturers to monitor fleets, push software updates, and reduce recall costs by fixing problems wirelessly.
Real-world use
When your car's check engine light comes on and your mechanic plugs in a diagnostic scanner, or when your Tesla downloads a software update overnight, you're experiencing technology directly descended from this patent's architecture.
Original USPTO abstract
A transceiver and additional memory are connected to the microprocessor in a vehicle so that all, or selected portions, of operating data is stored in the memory and periodically transmitted to a remote station. The data is diagnosed at the remote station and, for minor repairs, a fix is transmitted back to the vehicle. The information for a large population of vehicles is used by the manufacturer to determine if a problem is generic to a specific model and to generate repairs and/or model changes.
Patent details
- Publication number
- US 5,442,553
- Filing date
- 1992-11-16
- Grant date
- 1995-08-15
- Assignee
- Motorola
- Inventor(s)
- PARRILLO; LOUIS C.
- CPC class
- G07C5/0808
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