Autel AutoLink AL539B with unique patented One-Click I/M Readiness Key, circuit test, starting and charging systems tests, battery test, TFT color display, and built-in speaker. AL539b will streamline automotive service and help ensure rapid, accurate diagnosis and timely repair 1. Works on ALL 1996 and newer vehicles(OBDII & CAN)-domestic and import 2. Capable of diagnosing 12V charging systems, starting systems and condition of discharged battery 3. Easy-to-read AVOmeter allows you to test voltage, continuity and current at the fingertip 4. Features the unique patented One-Click I/M Readiness Key for quick State Emissions readiness check and drive cycle verification 5. Provides quick and accurate load-free testing of most types of 12V batteries, including AGM, standard and maintenance-fee batteries 6. Bright color coded LEDs and built-in speaker provide both visual and audible tone for readiness verification
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