AUTEL AL539 OBD2 Scanner – The Complete Diagnostic Solution

The AUTEL AL539 is a professional-grade 3-in-1 diagnostic tool that combines an OBD2 scanner, multimeter, and battery/charging system tester—all in one compact device. Whether you're a mechanic, technician, or car enthusiast, this tool provides the detailed diagnostics you need to identify, troubleshoot, and fix vehicle issues efficiently.

• Retrieves generic (P0, P2, P3, U0) and manufacturer-specific (P1, P3, U1) codes

• Clears Check Engine Light (MIL) and resets monitors

• Displays pending codes to catch issues before they trigger a warning

• Real-time sensor data (RPM, fuel trim, oxygen sensors, etc.)

• Freeze Frame – Captures vehicle conditions at the time of a fault

• O2 Sensor Test – Checks performance for emissions compliance

• EVAP System Test – Detects fuel vapor leaks

• One-Click I/M Readiness Test – Quickly verifies if your vehicle is ready for a smog check

• Drive cycle verification – Ensures monitors are complete

• Measures DC/AC voltage (up to 30V)

• Tests circuit resistance & continuity (open/short detection)

• Current measurement (0–20A) – Helps diagnose electrical draws

• Verifies diode functionality

• Checks battery voltage & health directly at terminals

• Tests Standard, AGM, Gel, and Spiral batteries

• Checks CCA, CA, MCA, DIN, SAE, JIS ratings

• Starter Test – Predicts if the battery can start the engine

• Charging System Test – Verifies alternator output (voltage & current)

• Bright Color Display – Easy-to-read live data & graphs

• Color-Coded LEDs & Audible Alerts – Quick status checks

• Multilingual Support – English, Spanish, French, and more

• DTC Lookup – Detailed code definitions for faster repairs

• Data Logging & Playback – Save and review scans later

• Vehicle Info Retrieval – Reads VIN, CIN, CVN for identification

? Mechanics & Technicians – Professional-grade diagnostics in a portable tool
? DIYers & Car Enthusiasts – Easy-to-use for home repairs
? Smog Check Stations – Fast emissions readiness verification

Works on most 1996 and newer OBD2 & CAN-compliant vehicles, including:

• Domestic (Ford, GM, Chrysler, etc.)

• European (BMW, Mercedes, VW, etc.)

• Asian (Toyota, Honda, Nissan, etc.)