Autel code reader AL539b vs ML529 vs ML629 vs TOPDON AL500B vs TOPDON TopScan Pro comparison
Autel and TOPDON OBD2 Scanner Code Reader Comparison Chart
| Feature | TOPDON AL500B ($69) | TOPDON TopScan Pro ($99) | Autel AL539B ($93) | Autel ML529 ($55) | Autel ML629 ($91) |
|---|---|---|---|---|---|
| OBD2 Full Functions | ✔ | ✔ | ✔ | ✔ | ✔ |
| One-Click I/M Readiness | ✔ | ✔ | ✔ | ✔ | ✔ |
| ABS/SRS System Diagnosis | ✘ | ✔ | ✘ | ✘ | ✔ |
| Engine & Transmission Diagnosis | ✘ | ✔ | ✘ | ✘ | ✔ |
| Bi-Directional Control | ✘ | ✔ | ✘ | ✘ | ✘ |
| IMMO Key Programming | ✘ | ✔ | ✘ | ✘ | ✘ |
| Battery Test | ✔ (12V) | ✘ | ✔ (12V) | ✘ | ✘ |
| Cranking & Charging Test | ✔ (12V/24V) | ✘ | ✔ (12V) | ✘ | ✘ |
| Circuit Test (AC/DC Voltage) | ✘ | ✘ | ✔ | ✘ | ✘ |
| Auto VIN Technology | ✘ | ✔ | ✘ | ✔ | ✔ |
| Wireless & Mobile Support | ✘ | ✔ | ✘ | ✘ | ✘ |
| Multilingual Support | ✔ (7 Languages) | ✔ | ✘ | ✔ | ✔ |
| Screen Type | 2.8" Color LCD | Uses Smartphone | TFT Color LCD | TFT Color LCD | TFT Color LCD |
| Software Updates | ✔ Free | ✔ Free | ✘ | ✘ | ✔ |
TOPDON AL500B ($69): Ideal for those needing both OBD2 diagnostics and battery testing (12V/24V) at a budget-friendly price. It’s great for checking engine issues and assessing battery health but does not support advanced functions like ABS, SRS, or bi-directional control.
TOPDON TopScan Pro ($99): A feature-packed scanner for those who want advanced diagnostics, key programming, reset functions, and bi-directional control. It also supports wireless connectivity, making it more convenient for professional or DIY users working on multiple vehicles.
Autel AL539B ($93): Best for users needing OBD2 diagnostics plus electrical testing (voltage/circuit tests). While it helps diagnose electrical faults, it does not support ABS, SRS, or transmission diagnostics, making it less ideal for full system checks.
Autel ML529 ($55): A basic OBD2 scanner with AutoVIN for quick vehicle identification. It's a cost-effective choice for reading and clearing engine codes but lacks battery and circuit testing, limiting its usefulness beyond basic diagnostics.
Autel ML629 ($91): The best budget-friendly option for full-system diagnostics, covering OBD2, ABS, SRS, Engine, and Transmission. Ideal for those who need more than just engine diagnostics but don’t require advanced bi-directional controls or reset functions.
Which One Should You Buy?
For basic OBD2 diagnostics: Autel ML529
For OBD2 + electrical testing: Autel AL539B
For OBD2 + ABS, SRS, Engine & Transmission: TOPDON TopScan Pro or Autel ML629
For OBD2 + battery testing (12V/24V): TOPDON AL500B
For advanced functions like key programming & bi-directional control: TOPDON TopScan Pro
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