Autel AutoLINK AL549

Autel AutoLINK AL549 Engine and ABS Code Reader with Battery Tester

The AutoLINK AL549 is a 2-in-1 diagnostic tool that combines an OBD II engine and ABS code reader with a basic battery, starter, and charging system tester — all accessed through the OBD II port, no separate leads required. It runs on a 2.8-inch color LCD and covers U.S., Asian, and European vehicles 1996 and newer. At its price point, the AL549 fills a useful niche: shops that want more than a basic engine code reader (adds ABS codes and battery testing) but don't need full 4-system coverage.

Who Should Buy the AL549

The AL549 makes sense for:

• General repair shops that want ABS code capability alongside engine diagnostics without jumping to a more expensive 4-system reader
• Shops handling pre-purchase inspections — ABS and battery health checks in one tool are a natural fit for vehicle inspections
• Technicians who do a lot of check-engine and ABS light work on everyday passenger cars and light trucks

The AL549 does not cover SRS (airbag) or transmission codes. If you need those systems, look at the AL629, which adds SRS and transmission coverage for a modest price difference. The AL549 also does not include the electrical test probes that the AL539 carries — the battery/charging test on the AL549 runs through the OBDII port rather than with dedicated test leads.

Engine and ABS Diagnostics

• Read and erase engine codes — full OBDII engine diagnostics including all 10 test modes per J1979 spec
• Read and erase ABS codes — anti-lock brake system fault codes on supported vehicles
• Enhanced PCM and ABS coverage — reads manufacturer-specific codes beyond generic OBDII
• Live Data and Freeze Frame — view what the vehicle was doing when a fault occurred
• I/M Readiness / Emissions monitoring — color-coded pass/fail status for quick emissions checks
• Record and Playback — capture data streams for later review
• Component Test — test individual emission-related components

Battery, Starting, and Charging System Testing

The AL549 adds basic electrical system testing via the OBD II port — no separate test leads needed. This is a practical feature for shops that want to quickly assess whether a battery or charging issue is contributing to diagnostic faults:

• Battery condition check
• Starter system test
• Charging system test

Note: this is basic battery/charging testing through the OBD port. It is not equivalent to a dedicated battery analyzer with test clamps. For more thorough electrical system testing with voltage test probes included, the AL539 is the Autel alternative.

Vehicle Coverage

• U.S., Asian, and European vehicles, 1996 and newer
• Tri-lingual software: English, Spanish, French
• Auto VIN detection not confirmed for this model — manual vehicle selection may be required

Technical Specifications

• Display: 2.8-inch LCD, 320x240 dpi, color
• Connectivity: Type C USB / OBD II DB16
• Power: 8.0 to 18.0 V via vehicle battery
• Operating Temperature: 0°C to 60°C (32°F to 140°F)
• Storage Temperature: -20°C to 70°C (-4°F to 158°F)
• Dimensions: 150.6 mm x 85 mm x 19.9 mm (5.9" x 3.3" x 0.8")
• Weight: 275.4 g with cable / 166.9 g without cable

What Is Included

• AutoLINK AL549 tool
• USB Type C cable (for software updates and printing via PC)
• OBDII cable
• Free Maxi PC Suite download for printing diagnostic reports

Software Updates

Software updates are downloaded via USB to PC. Autel does not specify lifetime free updates for the AL549 the same way it does for higher-end AutoLINK models — verify current update policy at purchase. The tool includes a 1-year limited warranty.

AL549 vs. AL629: Which One Do You Need?

The AL549 covers Engine + ABS. The AL629 covers Engine + ABS + SRS + Transmission for a modest price difference. If airbag codes and transmission codes matter to your workflow at all, the AL629 is the better buy. The AL549 makes sense if you specifically want battery/charging testing through the OBD port — a feature the AL629 does not include. Know your priority before choosing.

Why Buy the Autel AutoLINK AL549 From Autel Diagnostic Tools?

Autel Diagnostic Tools has specialized in professional diagnostic equipment since 2016. We can walk you through the AutoLINK lineup and help you pick the right tool for your shop. Every purchase includes free shipping, a full manufacturer warranty, and free tech support at 866-217-0063. We give honest upgrade guidance — no upsell for tools you do not need.

Call 866-217-0063 for quick answers and help!