Enhanced Autel AL539B OBD2 Scanner: 3-in-1 Code Reader, Battery Tester, Avometer for 12 Volts Batteries, Advanced OBDII Diagnosis and Circuit Starting & Charging Systems Test Review

This is a DIY OBDII combo scan tool with DMM that you must have as you can reproduce MANY tests using much more expensive equipment but at a MUCH lower price. It just needs a good test Leads that allow you to switch end probes to facilitate multiple test methods. The test leads provided with this unit are of good quality, but the ends of the test leads are unconnected and cannot be replaced. The only thing that disappointed me a little but I knew about it before I bought it. . The included…

The main reason I bought this unit was to test the battery/starter/charger. The device is easy to use and well designed. I have a favorite Autel Maxisys Elite as well as an Autel TS-601 for TPMS services so I decided to add an Autel 539B as my main battery tester. So far I like everything about this device, especially that it has an ammeter/voltmeter/ohmmeter (AVO meter). There are a few improvements I would suggest: 1. longer battery cables - during a run test I need someone to start the…

This has saved me a lot of money on exhaust repairs. that's the main reason I got it. 1> It has an oscilloscope function on the multimeter. By the way, the multimeter is designed for only 30 volts, a maximum of 20 amperes, which is enough to work with almost any car. I used it to record the current amplitude of the fuel pump (the pump was fine) and the crankshaft position sensor (it was bad) 2> It has a built in battery capacity tester. The battery capacity tester costs the same as this…

The device worked normally on the first run. It looks like a high quality device and accessories in a nice storage box. After testing the unit I went online to register it with Autel and found that both the Maxi-Link II software and the 539B's internal software and DTCs had been updated. I updated the PC software, then updated the wearable's internal software and error code list. As a result, the device quickly broke. When I press OK for the OBD menu or the setup menu I just get a list of two…

Autel recommends upgrading your device at the time of purchase. I updated and lost the DVOM function! Wrote to Autel and here is the reply. I did an update and after that everything went perfectly! Hope this helps." Hi Christopher, AL539 will not register. Please try the update again and follow these instructions: Go to www.autel.com (top of web page) Support & Updates > Firmware & Downloads > Update Client > Download MaxiLinkII (top row, middle image) After downloading the file, open…

This device is a battery tester, multimeter and OBDII scanner. It can test both conventional flooded and lead-acid AGM batteries. I have a Lexus Hybrid equipped with a Panasonic 12 volt AGM motor. When hooked up to my old battery, this unit started up immediately and showed a 9.8v terminal potential which no wonder explains why my car wasn't booting up properly, with blind spot monitor failing, infotainment screen flashing, blank gear indicator instead of the letter "P" and there is no green…

Autel AutoLink AL539B OBDII is a really good product, so it's easy for me to test it. Received this specifically for the battery check function plus obdii diagnostics. Well, it worked out great, just like I expected. It came quickly with a sturdy and durable carrying case containing various accessories, a test main line, a test machine, a probe, a battery test lead, a mini USB cable and instructions. Everything is well organized. Car maintenance and repairs have always cost me a lot of money at

I've done quite a bit of diagnostic work in the past and have used several different technical level diagnostic tools and automotive oscilloscopes - Snap On MT2500 (ex (e.g. Red Brick), Vantage, some OTC systems, GM Tech 1 and 2 and some engine analyzers from Sun and Snap-On. Let's get one thing straight: the AL539b is not a replacement for any of them. At $89 it shouldn't be, and that's fine. This is a code reader/scan tool that can perform several other diagnostic functions. It doesn't do…