Automotive Diagnostic Tools (OEM Scanning) 101

The addition and expansion of ADAS technology in more vehicles has resulted in increasingly complex repairs, and as a result, shop owners need proper diagnostic equipment to compete in this growing service sector. It’s a critical part of offering ADAS calibrations and confidently knowing that you’ve followed OEM instructions to the last detail. 

And with repairs as minor as a quick wheel alignment potentially resulting in the need for ADAS calibrations, you can’t afford not to have automotive diagnostic tools that can help you identify and pre-screen all necessary repairs and complete all calibration processes. 

With plenty of automotive diagnostic tools on the market, however, it can be difficult to determine which are worth the investment. To help you make the right choice for your shop, this post breaks down what OEM scanning tools are, how automotive diagnostic tools function, and what to consider when making a purchasing decision for your shop. 

What is OEM scanning?

OEM scanning uses manufacturer-specific diagnostic tools to collect data from the vehicle’s computer system to diagnose potential issues. 

Unlike after-market scanners, OEM (Original Equipment Manufacturer) scanners are designed specifically for certain vehicle makes. They provide complete access to all electronic control units (ECUs), which means they can read every diagnostic trouble code (DTC), access all vehicle modules, and perform bidirectional controls with the same capabilities as dealer-level equipment.

For shops expanding into ADAS calibration, OEM scanning is critical because modern advanced driver assistance systems require precise diagnostics before, during, and after calibration procedures. Using manufacturer-specific tools ensures that all potential issues are identified, fixed through ADAS calibration or critical repair processes, and reset according to factory specifications.

Why OEM scanners are critical for ADAS calibrations

When it comes to ADAS calibrations, OEM scanners aren't just beneficial—they're essential. Modern vehicles integrate multiple safety systems, all of which are highly sensitive and can require recalibration after other standard repairs. 

Generic scanners often lack the capabilities to access all ADAS-related modules or perform the specific commands required during calibration procedures.

Meanwhile, OEM scanners provide several critical advantages for ADAS work:

• Complete module access: Many ADAS features use proprietary systems that generic tools simply cannot communicate with properly.
• Bidirectional control: OEM scanners can both read data and send commands to modules—necessary for activating calibration modes and confirming proper operation.
• Factory-exact procedures: Manufacturer scanners follow the exact calibration sequences designed by engineers who built the systems.

Using inadequate diagnostic equipment for ADAS calibrations creates significant liability risks. 

A miscalibrated forward-facing camera or radar sensor that’s off by even a few degrees can cause emergency braking systems to activate too late or lane-keeping systems to malfunction at highway speeds. These aren't merely convenience features—they're safety-critical systems where precision matters.

How do automotive diagnostic tools work? 

Automotive diagnostic tools function by establishing a communication link with your vehicle's onboard diagnostic system through the OBD-II port (typically located under the dashboard). Once connected, these tools use proprietary communication protocols to exchange data with the vehicle's ECUs.

At a technical level, the scanner sends query messages to specific modules within the vehicle, which then respond with requested data. For ADAS-equipped vehicles, this process is particularly important as these systems rely on multiple interconnected modules that must be properly identified and accessed.

Modern OEM scanning tools typically include:

• A hardware interface that connects to the vehicle.
• Software that interprets the data and provides a user interface.
• Regular updates to maintain compatibility with new vehicle models and systems.
• Vehicle-specific databases containing reference values and procedures.

When performing an ADAS calibration, these tools allow you to verify system status, clear fault codes, perform initialization procedures, and confirm successful calibration completion. They also provide real-time data parameters that help identify potential issues that might affect calibration accuracy.

What to look for when purchasing automotive diagnostic tools? 

When investing in diagnostic tools for ADAS calibration work, several key factors should guide your decision:

• Coverage depth: Ensure the tool provides full access to all modules in the vehicles you service most frequently. For ADAS work, you need complete access to cameras, radar units, and their associated control modules. Partial coverage can leave you unable to complete calibrations properly.
• Software update frequency: Vehicle systems evolve rapidly, particularly in the ADAS space. Choose tools from manufacturers that provide regular updates to maintain compatibility with newer vehicle models and system variations.
• Technical support: Solid technical backing is invaluable when you encounter unusual situations. Look for providers that offer phone support with experienced technicians who understand calibration procedures.
• Factory instructions: Look for providers that include information on not just how to use the tool and perform calibrations. 
• Multi-brand capabilities: If your shop services multiple makes, you can consider after-market solutions that work across multiple makes and models. 

Need more than just a new diagnostic scanner? You can learn more about other types of ADAS calibration tools, too. 

Maximize shop efficiency and revenue with RevvHQ 

Proper diagnostic tools are the foundation of successful ADAS calibration services. Without the right scanning equipment, shops can’t confidently perform the precise calibrations modern vehicles require. This creates a clear choice: Invest in quality diagnostic solutions now, or risk falling behind the competitors that offer these essential services.

While the initial investment in OEM-level diagnostic tools represents a significant cost, it opens the door to a rapidly growing service category that customers increasingly need. Every windshield replacement, front-end collision repair, and even some basic alignments now trigger the need for proper ADAS calibrations—creating consistent service opportunities for prepared shops.

RevvHQ’s ADAS calibration software has helped shops and mechanics across the country successfully implement diagnostic solutions that enable complete ADAS calibration services according to OEM specifications. You can ensure that you’re able to best serve each client, resulting in increased revenue and retention. 

Ready to confidently offer ADAS services to your clients? Book your free demo with Revv today.