The packaging includes a USB charging cable but no AC adapter. You also have to charge the Autel's internal battery to power the multimeter. The Autel AutoLink AL539 sets itself apart from the crowd with a digital multimeter, but you can't use that function and the OBD-II scanner at the same time. If it's green, then that's a good indicator the car will pass inspection.
The device's ReadyTest feature is a pre-inspection series of tests that shows a green check mark when everything is OK, or a yellow exclamation mark or red octagon when something requires attention. It also tests the cylinder pressure, charging system and starter. When connected to the car's computers, the Autel AutoLink AL539 can show live data, such as the engine speed and the coolant temperature, to help you figure out hard-to-diagnose problems. It quickly detected a fault that I had deliberately introduced (a disconnected oil-temperature sensor) and then allowed me to turn off the Check Engine light. The scanner worked well with both my cars, a 2014 Audi A4 AllRoad and a 2016 Infiniti Q50. It can, however, show the car's vehicle identification number (VIN). The AL539 lacks the ability to directly read the make, model and year data from the car's computer.
You press the center of the four-way control to activate the selection. The Autel's eight-key interface is rudimentary but easy to master.
In addition, there's an icon for firing up the electrical tester. The Settings section has options to configure the scanner the way you want it. Its home screen provides access to the most frequently used items, such as Diagnostics, Ready Test and fault-code lookup, as well as the ability to review stored data and print it.
#OBD2 READER REVIEWS SOFTWARE#
The AL539's software is icon-based and visually oriented. The Autel AutoLink AL539's 2.8-inch color screen is on a par with the Innova CarScan 5310 and SeekOne SK860, but is smaller than the 3-inch display on the Bosch OBD1300.
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