For car owners and auto repair enthusiasts, having a reliable OBDII code reader is essential for diagnosing and resolving vehicle issues. Among the popular options available, the Autel AutoLink AL439 and AL519 stand out. This review delves into a detailed comparison, helping you decide if the Autel AL439 OBDII/EOBD code reader is the right choice for your diagnostic needs.
Before we dive into the specifics, let’s get a quick overview of each device.
Autel AutoLink AL439 Overview
The Autel AutoLink AL439 OBDII/EOBD scanner is designed for comprehensive diagnostics, supporting all 10 modes of OBDII testing. It’s equipped with Autel’s patented One-Click I/M Readiness Key, a feature that simplifies emissions readiness testing. Beyond basic OBDII functions, the AL439 includes circuit testing capabilities, along with starting and charging system tests, making it a versatile tool for a broader range of diagnostic tasks. Its user-friendly interface features a color TFT display and a built-in speaker for audible feedback.
Image alt text: Autel AutoLink AL439 OBDII EOBD code reader displaying diagnostic interface.
Autel AutoLink AL519 Overview
The Autel AutoLink AL519 OBDII/EOBD scanner is another robust tool in Autel’s lineup, offering complete OBDII diagnostic functions. It also features the convenient One-Click I/M Readiness Key and a color TFT display. The AL519 is known for its ease of use and speed, aiming to make vehicle diagnostics more efficient for users. It includes helpful troubleshooter code tips to aid in faster diagnosis and repair, and it supports printing diagnostic reports via a Windows-based PC.
Image alt text: Autel AutoLink AL519 OBDII EOBD scanner showing DTC lookup function on screen.
Autel AL439 vs AL519: Key Function Comparisons
To make an informed decision between the Autel AL439 and AL519, let’s compare their functions, hardware, and price.
| Feature Category | Feature | Autel AL519 | Autel AL439 |
|---|---|---|---|
| Diagnostic Functions | Read MIL Status | √ | √ |
| One-Touch I/M Readiness Key | √ | √ | |
| View Freeze Frame Data | √ | √ | |
| View Live Data | √ | √ | |
| Read/Erase DTCs | √ | √ | |
| View Vehicle Information | √ | √ | |
| O2 Monitor Test | √ | √ | |
| On-board Monitor Test | √ | √ | |
| Component Test | √ | √ | |
| Modules Present | √ | √ | |
| Advanced Tests (AL439 Exclusive) | AC/DC Voltage Test | – | √ |
| Resistance Test | – | √ | |
| Starter Test | – | √ | |
| Charging System Test | – | √ | |
| Data Management & Output | Save and Play Back Data | √ | √ |
| DTCs Help | √ | √ | |
| Print Data Via Windows-based PC | √ | √ | |
| Vehicle Compatibility | OBD Protocol Compliance | OBD Compliant Vehicles | OBD Compliant Vehicles |
Image alt text: Side-by-side visual comparison of Autel AL519 and Autel AL439 OBDII code readers highlighting their similar design.
Functionality: AL439 Extends Diagnostic Capabilities
As seen in the comparison chart, both the AL519 and AL439 offer a comprehensive suite of OBDII diagnostic functions. They are equally capable in reading and clearing diagnostic trouble codes (DTCs), performing I/M readiness tests, accessing live data streams, and conducting essential OBDII tests.
However, the Autel AL439 distinguishes itself with additional advanced functions. It incorporates AC/DC voltage testing, resistance testing, and dedicated tests for starter and charging systems. These features elevate the AL439 beyond basic OBDII scanning, allowing users to perform circuit tests and evaluate the health of crucial vehicle electrical systems. This expanded functionality makes the AL439 a more versatile tool for users who need to delve deeper into electrical diagnostics.
Hardware and Design: Minor Differences
In terms of hardware, both scanners are designed to be user-friendly and durable. They both feature color TFT displays, although the AL519 boasts a slightly higher resolution (320 x 240 dpi) compared to the AL439 (220 x 176 dpi). Both operate within the same temperature ranges and are powered directly from the vehicle’s battery.
Physically, the AL519 is slightly larger and heavier than the AL439. These are minor differences and shouldn’t significantly impact usability for most users. The choice here may come down to personal preference regarding size and screen resolution, although both offer clear and readable displays for diagnostic information.
Price and Value: Balancing Cost and Features
Price is always a crucial factor. The Autel AL519 is generally positioned as a more budget-friendly option. The Autel AL439, with its added circuit testing functions, comes at a higher price point.
The decision between the two often hinges on whether the additional circuit testing capabilities of the AL439 are necessary for your needs. If you primarily require standard OBDII diagnostics for reading and clearing codes, and basic system checks, the AL519 provides excellent value. However, for users who anticipate needing to diagnose electrical issues, test circuits, and evaluate starting and charging systems, the extra investment in the AL439 may be justified.
Which Autel OBDII Code Reader is Right for You?
Choose the Autel AL439 if:
- You need a comprehensive OBDII scanner with advanced electrical system diagnostic capabilities.
- Circuit testing, starter, and charging system tests are important for your diagnostic work.
- You are a DIY enthusiast or professional technician who wants a versatile tool for a wider range of issues.
Choose the Autel AL519 if:
- You are looking for a reliable and easy-to-use OBDII scanner for basic to intermediate diagnostics.
- Your primary needs are reading and clearing codes, checking emissions readiness, and viewing live data.
- You want a cost-effective OBDII scanner without the need for advanced circuit testing features.
In conclusion, both the Autel AL439 and AL519 are excellent OBDII code readers. The “best” choice depends on your specific diagnostic requirements and budget. For users needing expanded functionality including circuit testing, the Autel AL439 OBDII EOBD code reader is the superior option. For those focused on core OBDII diagnostics at a more affordable price, the Autel AL519 remains a highly capable and recommended tool.
