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Autel AutoLink AL539B OBDII Code Reader & Electrical Test Tool


Autel AutoLink AL539B Code Reader/OBDII Diagnostic Tool/Tester/Circuit Test/Starting & Charging Systems Tests/Battery Test etc.

The AutoLink AL539b OBDII & Electrical Test Tool supports all 10 modes of OBD II test for a complete diagnosis. Featuring the unique patented One-Click I/M Readiness Key, circuit test, starting and charging systems tests, battery test, TFT color display, and built-in speaker, the versatile, easy-to-use AL539b will streamline automotive service and help ensure rapid, accurate diagnosis and timely repair.

Autel AutoLink AL539B 1

Autel AutoLink AL539B 2

Autel AutoLink AL539B 3

Autel AutoLink AL539B Product Features:

  •  Works on Most 1996 and newer vehicles(OBDII & CAN)-domestic and import
  •  Capable of diagnosing 12V charging systems, starting systems and condition of discharged battery
  •  Easy-to-read AVOmeter allows you to test voltage, continuity and current at the fingertip
  •  Features the unique patented One-Click I/M Readiness Key for quick State Emissions readiness check and drive cycle verification
  •  Provides quick and accurate load-free testing of most types of 12V batteries, including AGM, standard and maintenance-fee batteries
  •  Bright color coded LEDs and built-in speaker provide both visual and audible tone for readiness verification
  •  Easily determines the cause of the Check Engine Light (MIL)
  •  Retrieves generic (P0, P2, P3, and U0), manufacturer specific (P1, P3, and U1) codes and pending codes
  •  Turns off Check Engine Light (MIL), clears codes and resets monitors
  •   Displays monitor and I/M readiness status (emissions)
  •   Reads live PCM datastream, live O2 sensor test data, freeze frame data
  •   Graphs data (1996 and newer)
  •  Troubleshooter codes tips guide technicians to the root cause of trouble code faster, saving diagnosis and repair time
  •  Memory/battery backup for off-vehicle data review and analysis
  •  Multilingual menu and DTC definitions-English, Spanish and French, etc.
  •  Retrieves vehicle information (VIN, CIN and CVN)
  •  Internet updateable and upgradeable
  •  Prints data via PC

Bullet Points:

WIDE APPLICATION: Working on most 1996 and newer American, Asian and European OBDII/CAN compliant vehicles, AL539B has been termed to be one of the most extensive diagnostic scanner code readers that you would be able to lay your hands on.

BATTERY TEST: Comparing with the basic AL539, AL539B can perform one more function: Battery Test.

This diagnostic tool provides a quick and accurate load-free testing of most types of 12V batteries including AGM, standard and maintenance-free batteries for better user experience.

OBDII FUNCTIONS: The auto scanner provides 10 modes of OBDII functions including Read/Clear codes, Live Data, Freeze Frame Data, I/M Readiness, O2 Monitor Test, On-Board Monitoring etc., for quick & precise test results of your vehicle health status.

BUILD-IN MULTIMETER: AL539B features a build-in auto-ranging automotive diagnostic Multimeter to test voltage, continuity and current of 12V charging systems, starting systems and condition of discharged battery for matching users’ specific needs.

I/M READINESS: The code reader features the unique patented one-click I/M Readiness Key for quick check the operations of the Emission System on OBDII compliant vehicles, to eliminate drive cycle guesswork.

CABLE ACCESSORIES: Three different cables are included for OBD, AVOmeter and Batter Test.

The batter test cable has the red/back clamps for making a solid connection with the battery positive/negative terminals.

WARRANTY & UPDATE: Autel AL539B carries a complete 12-month guarantee from date of sale to ensure it is reliable and suitable for diagnosing work and free lifetime updating online.


Display: TFT color display (320 x 240 dpi)

Operating Temperature: 0 to 60°C (32 to 140 F°)

Storage Temperature: -20 to 70°C (-4 to 158 F°)

Packing List

AL539B Main unit


Battery Test Cable


USB Cable

User Manual

Carry Case

3.7V Li-ion Battery



Weight 2.2 kg
Dimensions 28.5 × 25 × 10 cm