The Autel AutoLink AL539 is a unique OBD2 scanner that combines diagnostic capabilities with a built-in multimeter. This comprehensive review explores its features, performance, design, and overall value, helping you decide if it’s the right tool for your automotive needs.
Design and Features of the Autel AL539
The AL539 boasts a rugged design with a ribbed, rubberized exterior built to withstand tough conditions. Its compact size (6.7 x 3.6 x 1.4 inches) and weight (10.6 ounces) make it easily portable. A unique pull-out stand allows for hands-free use, setting it apart from competitors like the Innova CarScan Inspector 5310 and SeekOne SK860.
Autel AutoLink AL539 with stand
The 2.8-inch color display, while smaller than the Bosch OBD1300’s screen, provides clear and easy-to-navigate menus. The icon-based interface and eight-key navigation are straightforward, even for beginners. Key features accessible from the home screen include:
- Diagnostics: Read and clear fault codes, view live data.
- Readiness Test: Pre-inspection check to ensure vehicle compliance.
- Fault Code Lookup: Provides detailed information on specific codes.
- Data Review and Print: Save and analyze diagnostic data.
- Multimeter Function: Access the integrated digital multimeter.
Autel AutoLink AL539 interface
Performance and Functionality
The Autel AL539 quickly connects to a vehicle’s OBD2 port and provides comprehensive diagnostic information. While it doesn’t automatically read the vehicle’s make and model, it displays the VIN and allows for in-depth analysis.
In testing, the AL539 accurately detected a deliberately introduced fault (disconnected oil temperature sensor) and allowed for clearing the Check Engine light. Live data parameters like engine speed and coolant temperature can be monitored in real-time, aiding in complex diagnoses. Additional functionalities include:
- Cylinder Pressure Test: Evaluate engine health.
- Charging System Test: Assess battery and alternator performance.
- Starter Test: Verify starter motor operation.
- Ready Test: Provides a pre-inspection readiness check indicated by clear visual cues (green checkmark for pass, yellow exclamation or red octagon for attention).
Autel AutoLink AL539 displaying test results
The integrated digital multimeter offers features beyond basic OBD2 scanners, enabling users to check AC/DC voltage, continuity, and current flow. However, the multimeter requires separate charging via a USB cable (AC adapter not included) and cannot be used simultaneously with the OBD2 scanner.
Setup and Use
Connecting the AL539 is simple: plug the 58-inch cable into the vehicle’s OBD2 port. The cable length is sufficient for most applications and can be extended if necessary. Dedicated ports for the OBD2 cable, multimeter leads, and a 5-volt charging input are clearly labeled. A mini-USB port allows for firmware updates via PC connection.
Autel AutoLink AL539 connected under the hood
Final Verdict
The Autel AutoLink AL539 offers a compelling combination of OBD2 diagnostics and multimeter functionality in a single device. While the inability to use both functions concurrently is a limitation, the AL539’s rugged design, comprehensive diagnostic capabilities, and added multimeter features make it a valuable tool for both DIY enthusiasts and professional mechanics. The one-year warranty, however, is shorter than some competitors, such as the SeekOne SK860’s lifetime updates. Overall, the AL539 is a powerful and versatile tool that provides excellent value for its price.
