Opening A2L Files

The A2L file type is primarily associated with ASAP2 Tool-Set.

A2L	File extension: A2L
	File type:	electronic circuit description

What is an A2L file

A2L files mostly belong to ASAP2 Tool-Set by Vector. An A2L file contains information about all data objects describing the interface (measurements, properties, and access permissions) of an Electronic Control Unit (ECU). The contents of this file are stored as ASCII or UTF-encoded text in accordance with the ASAM MCD-2 MC (previously ASAP-2) standard used for measurement, calibration, and diagnostics. Parameters, real/virtual measured variables, maps, variant dependencies, and unit conversion rules created for an ECU are stored in this file. Electronic Control Unit modeling, testing, and calibration tools such as CANape, ASAP2 Tool-Set, and, Simulink can be used to create and edit an A2L file.

How to open an A2L file

You need a suitable software like ASAP2 Tool-Set to open an A2L file. You need a suitable software like ASAP2 Tool-Set from Vector to open an A2L file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your A2L file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a A2L file directly in the browser:. Just drag the file onto this browser window and drop it.

Online A2L Text Viewer

Choose your .a2l file to view

or drag and drop it here

Online File Viewer

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How to extract texts from A2L files or capture a screenshot to PDF, JPG, DOCX, TXT, ...

If you want to extract texts from A2L file or capture a screenshot, you can use our free Online A2L File Viewer:

To do this, click the button "Choose your .a2l file to view" on this page.
Your A2L file will then be displayed in the browser.
Now click on "Save as..." at the top of the page.
Then choose the file format (e.g. JPG, PDF, DOCX, TXT, ...) you want.
Download the converted file.

Can't Open Your .A2L File? Try These Steps

Because .A2L files can originate from various specialized programs, they aren't universally openable.

Identify the Source: If received from an automotive engineer or CAD workflow, it is likely an electronic circuit description or ECU calibration file.
Check the Header: Open the file in a text editor to inspect the first lines:
- Readable ASAP2_VERSION text implies an ECU database.
- "PK" indicates a compressed archive.
- Garbled symbols suggest a proprietary binary.
Use the Original Software: The original program is usually required; try Vector ASAP2 Tool-Set, ETAS INCA, or ask the sender if uncertain.
Use this Webpage: Drag and drop your file into our viewer to detect the format, extract readable text or metadata, and preview contents.

Technical Data for A2L File Extension

File classification:

CAD

Related files:

zip, dbc, cdd, arxml

Related links:

CANape, ASAM MCD-2 MC

an a2l electronic circuit description is a special file format by Vector and should only be edited and saved with the appropriate software.

How to solve problems with A2L files

Associate the A2L file extension with the correct application.
Update your software that should actually open electronic circuit descriptions. Because only the current version supports the latest A2L file format. Search, therefore, e.g. on the Vector manufacturer website after an available ASAP2 Tool-Set update.
To make sure that your A2L file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .A2L file online - secure, fast, and no downloads needed.