Autel AutoLink AL539 – A smart OBD2 scanner pick for diagnosing electrical problems

April 19, 2020

Autel AutoLink AL539 is one of the best OBD2 scanners because it does something that most other OBD2 scanners can’t: It can check electrical connections with a built-in multimeter to uncover pesky electrical shorts or burned-out cables. Just note that the multimeter is a stand-alone function that doesn’t work when the AL539 is connected to the car as an OBD scanner.

Autel AL539 OBD2 Scanner
Autel AL539 OBD2 Scanner

Autel AutoLink AL539, as a code reader combined with AVO meter, is specially designed for technicians and DIYers to diagnose vehicle emission-related problems with full 10 OBD test modes accesses, and to test the vehicle circuit problems with DC or AC voltage test, continuity test, and current test.

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Autel AutoLink AL539 Review

The Autel AutoLink AL539 has connectors for the multimeter’s included test cables for doing anything from checking continuity and current to voltage. The device’s lithium-ion battery powers it for checking fuses, the alternator’s voltage or the gas gauge.

The AL539 not only shows live data, like engine speed, coolant temperature and other items but also can run a comprehensive preinspection readiness key. It shows results as three lights for faults: red (permanent fault), yellow (temporary fault) or green (no faults).

Despite its soft rubber bumpers, the AL539 is fairly compact and light at 6.7 x 3.6 x 1.4 inches and 10.6 ounces. It has a unique pull-out leg so the device can stand on its own, as well as a generous 58-inch cable. Its bright, 2.8-inch color display has icons for major functions and an easy-to-follow, eight-key interface.

The AL539 found the fault I introduced into my 2014 Audi Allroad and was able to turn off the car’s check engine light. With a one-year warranty, the AL539 is a dual-purpose scanner that can find more than OBD faults.

AutoLink AL539 Specifications

Display/size: Color/2.8 inches
Bluetooth/handheld: Yes/no 
I/M Readiness test:  Yes
Displays live data:  Yes
 Number of keys: 8
Warranty:  1 year
Size:  6.7 x 3.6 x 1.4 inches
Weight: 10.6 ounces

Pros And Cons of AutoLink AL539

Pros Cons
  • Includes electrical multimeter
  • Battery tests
  • Includes stand
  • Can’t use OBD scanner and electrical meter at once
  • Need to recharge battery

Final verdict

The Autel AutoLink AL539 supports all 10 modes of OBDII test for a complete diagnosis. Featuring the unique patented One-click I/M readiness Key, circuit test, starting and charging system test, TFT color display, and built-in speaker, the versatile, easy-to-use AL539 will streamline automotive service and help ensure repaid, accurate diagnosis and timely repair.

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