Autel AL539B OBD2 Scanner - 3-in-1 Code Reader, Battery Tester & Full OBDII Diagnostics

All-in-one vehicle diagnostic tool

The Autel AL539B reimagines handheld diagnostics by combining OBD2 scanning, a battery test function, and a circuit check into one compact device. This 3-in-1 approach helps you quickly understand what is happening under the hood without swapping tools.

Comprehensive OBDII and CAN diagnostics

Built for vehicles from 1996 onward that support OBDII or CAN, the AL539B offers a full range of diagnostics: read and erase fault codes, view live data streams, capture freeze frame snapshots, and check readiness. It provides clear insight into what the vehicle computer is signaling.

• Read and erase fault codes, view live data, and check readiness status.
• Test sensors and monitor O2 data to identify potential emissions or performance concerns.

Battery health testing on the go

Beyond code reading, the AL539B includes a battery testing function powered by a built-in AVOMeter. It works with most 12V battery types, including AGM and maintenance-free variants, giving you a quick snapshot of voltage and overall health.

• Assess voltage levels and general battery health quickly.
• Plan maintenance or replacement before a roadside issue arises.

Electric circuit checks made simple

The circuit test lets you measure voltage, continuity, and current at your fingertips. This helps you check wiring and connections and quickly identify potential electrical issues affecting starting or charging systems.

Faster, smarter diagnostics

Autel keeps the flow moving with DTC lookup, data playback, and optional print capability. Save or share reports to document vehicle health, or compare live values over time for easier troubleshooting.

Everyday practicality and reliability

Designed for DIY enthusiasts and professionals, the AL539B combines a clear display with straightforward controls. Its portable form makes it convenient for home garages, service bays, or on-the-road checks where you want dependable insights without needing multiple devices.

Compatibility and care

While the AL539B covers a broad vehicle range, verify compatibility with your specific model and battery status before use. The tool is built to travel with you and endure everyday shop conditions while providing informative feedback.