How to Control ASW System Combi Output Using an OBD Scanner for Volkswagen

The Adaptive Suspension Workgroup (ASW) System Combi Output is a crucial component in modern Volkswagen vehicles, responsible for managing the adaptive suspension system. This advanced feature enhances ride comfort and handling by adjusting the suspension based on road conditions and driving style. In this comprehensive guide, we'll explore how to control the ASW System Combi Output using an OBD (On-Board Diagnostics) scanner, specifically focusing on Volkswagen vehicles equipped with Short Distance Radar 4 technology.

Understanding the ASW System Combi Output

Before diving into the control process, it's essential to understand what the ASW System Combi Output does and why it's important:

The ASW System Combi Output is part of the adaptive suspension system in Volkswagen vehicles.
It helps adjust the suspension's stiffness and damping characteristics in real-time.
This system works in conjunction with various sensors, including the Short Distance Radar 4, to provide optimal ride quality and handling.

Choosing the Right OBD Scanner

To effectively control the ASW System Combi Output, you'll need a compatible OBD scanner. Not all scanners are created equal, and some may not have the necessary functionality to access and control this specific system.

Recommended OBD Scanners for Volkswagen

Scanner	Compatibility	Features
VCDS (VAG-COM Diagnostic System)	Excellent	Comprehensive VW/Audi functionality
OBDeleven	Very Good	User-friendly interface, mobile app
Ross-Tech HEX-V2	Excellent	Professional-grade diagnostics

For this guide, we'll focus on using the VCDS system, as it offers the most comprehensive functionality for Volkswagen vehicles.

Connecting the OBD Scanner

Before you can control the ASW System Combi Output, you need to properly connect your OBD scanner:

Locate the OBD-II port in your Volkswagen. It's typically found under the dashboard on the driver's side.
Ensure the ignition is turned off.
Plug the OBD scanner into the port securely.
Turn the ignition to the "On" position, but don't start the engine.
Power on the OBD scanner and wait for it to initialize.

Accessing the ASW System Combi Output

Once your scanner is connected and initialized, follow these steps to access the ASW System Combi Output:

From the main menu, select "Control Modules."
Choose "19 - CAN Gateway" from the list of modules.
Select "Installation List" to view all installed modules.
Look for "14 - Susp. Elect." or a similar entry related to the suspension system.
Select this module to access the ASW System Combi Output controls.

Controlling the ASW System Combi Output

Now that you've accessed the correct module, you can begin controlling the ASW System Combi Output:

1. Reading Current Settings

Start by reading the current settings to understand the baseline:

Select "Measuring Blocks" from the module menu.
Look for blocks related to suspension settings, typically in the 001-010 range.
Note down the current values for reference.

2. Adjusting Suspension Stiffness

To modify the suspension stiffness:

Select "Basic Settings" from the module menu.
Choose the appropriate channel for suspension stiffness (consult your vehicle's manual for specific channel numbers).
Use the up and down arrows to adjust the stiffness value.
Confirm the changes and exit the Basic Settings menu.

3. Modifying Damping Characteristics

Adjusting the damping characteristics requires a similar process:

Return to the "Basic Settings" menu.
Select the channel corresponding to damping adjustments.
Modify the values as desired, keeping in mind that higher values typically result in firmer damping.
Confirm and save your changes.

4. Calibrating the System

After making adjustments, it's crucial to calibrate the system:

Select "Output Tests" from the module menu.
Choose the calibration test for the ASW System Combi Output.
Follow the on-screen prompts to complete the calibration process.
This step ensures that your changes are properly integrated into the system.

Integrating Short Distance Radar 4

The Short Distance Radar 4 system plays a vital role in the ASW System Combi Output's functionality. Here's how to ensure it's properly integrated:

1. Verifying Radar Functionality

Access the "19 - CAN Gateway" module again.
Look for the "Short Distance Radar" or "SDR" entry in the installation list.
Select this module and run a quick scan to ensure it's communicating properly.

2. Aligning Radar Settings with Suspension

To optimize the ASW System Combi Output with the Short Distance Radar 4:

Access the radar module's settings.
Look for options related to suspension integration or ride height.
Adjust these settings to match your new suspension configuration.
Save the changes and perform a system-wide calibration.

Testing and Fine-Tuning

After making adjustments and calibrating the system, it's essential to test and fine-tune your settings:

1. Road Testing

Take your Volkswagen for a test drive on various road surfaces.
Pay attention to ride comfort, handling, and overall suspension performance.
Note any areas that need improvement or feel inconsistent.

2. Data Logging

Use your OBD scanner's data logging feature to gather real-time information:

Select "Data Logging" from the main menu.
Choose the relevant suspension and radar modules.
Record data during your test drive.
Analyze the logs to identify any anomalies or areas for improvement.

3. Making Refinements

Based on your road test and data analysis:

Return to the ASW System Combi Output settings.
Make small adjustments to fine-tune the suspension characteristics.
Repeat the testing process until you achieve the desired performance.

Troubleshooting Common Issues

Even with careful adjustments, you may encounter some issues. Here are some common problems and their solutions:

1. Inconsistent Ride Quality

If you notice inconsistent ride quality after adjustments:

Check for any fault codes in the suspension module.
Verify that all sensors, including the Short Distance Radar 4, are functioning correctly.
Recalibrate the entire system and reset adaptations.

2. Error Messages

If you receive error messages during the adjustment process:

Double-check that you're using the correct module and channels for your specific Volkswagen model.
Ensure your OBD scanner's firmware is up to date.
Clear any existing fault codes and retry the adjustment process.

3. Unresponsive Controls

If the ASW System Combi Output doesn't respond to your inputs:

Verify that you have the necessary security access to make changes.
Check for any software updates for your vehicle's ECU.
Consult with a Volkswagen specialist if the issue persists.

Best Practices and Safety Considerations

When working with the ASW System Combi Output, keep these best practices in mind:

Always refer to your vehicle's specific manual and wiring diagrams before making changes.
Start with small adjustments and gradually work towards your desired settings.
Keep a record of all changes made, including initial settings, for easy reversal if needed.
Ensure your vehicle is on a level surface when performing calibrations.
Be cautious when test driving after making adjustments, as the vehicle's handling characteristics may have changed.

Conclusion

Controlling the ASW System Combi Output using an OBD scanner for your Volkswagen can significantly enhance your vehicle's performance and ride quality. By following this comprehensive guide and integrating the Short Distance Radar 4 system, you can achieve a customized suspension setup that meets your specific needs and preferences. Remember that while this process can be rewarding for enthusiasts and DIY mechanics, it's essential to approach these adjustments with caution and respect for the complex systems involved. If you're ever in doubt, don't hesitate to consult with a professional Volkswagen technician to ensure the safety and optimal performance of your vehicle. By mastering the control of your ASW System Combi Output, you're taking a significant step towards a more personalized and enjoyable driving experience in your Volkswagen. Happy tuning!