Autel Autolink Al539B Code Reader & Electrical Test Diagnostic Tool

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


1.Easily determines the cause of the Check Engine Light (MIL) 
2. Provides quick and accurate load-free testing of most types of 12V batteries, including AGM, standard and maintenance-fee batteries 

3.Troubleshooter codes tips guide technicians to the root cause of trouble code faster, saving diagnosis and repair time 

4.Turns off Check Engine Light (MIL), clears codes and resets monitors 

5.Displays monitor and I/M readiness status (emissions) 

6.Retrieves generic (P0, P2, P3, and U0), manufacturer specific (P1, P3, and U1) codes and pending codes 

7.Reads live PCM datastream, live O2 sensor test data, freeze frame data 
8.Capable of diagnosing 12V charging systems, starting systems and condition of discharged battery 

Package Lists

1*Battery Test Cable 

1*Carry Case 

1*OBDII Cable 



1*User Manual 
1*3.7V Li-ion Battery 

1*USB Cable

It works on most of the 1996 and newer vehicles(OBDII & CAN)-domestic and import
Features the unique patented One-Click I/M Readiness Key for quick State Emissions readiness check and drive cycle verification
Easy-to-read AVOmeter allows you to test voltage, continuity and current at the fingertip
Multilingual menu and DTC definitions-English, Spanish and French, etc.
Bright color coded LEDs and built-in speaker provide both visual and audible tone for readiness verification

Customer Reviews (21)