Mercedes Distronic Plus Retrofit: The Ultimate Guide

1. Understanding Mercedes Distronic Plus

Mercedes Distronic Plus is an advanced driver-assistance system (ADAS) that enhances safety and convenience by automatically maintaining a safe following distance from the vehicle ahead. It combines adaptive cruise control with steering assist to provide a semi-autonomous driving experience. This system uses radar sensors to monitor the traffic ahead and adjusts your car’s speed to match, even in stop-and-go traffic.

1.1. Key Features of Distronic Plus

• Adaptive Cruise Control (ACC): Automatically adjusts your vehicle’s speed to maintain a safe following distance.
• Stop-and-Go Assist: Functions in heavy traffic, bringing the car to a complete stop and resuming when traffic moves.
• Steering Assist: Provides gentle steering inputs to help keep the vehicle centered in its lane.
• Automatic Emergency Braking: Detects potential collisions and applies brakes to mitigate or avoid accidents.

1.2. Benefits of Retrofitting Distronic Plus

• Enhanced Safety: Reduces the risk of accidents by automatically maintaining a safe distance and providing steering assistance.
• Increased Convenience: Makes driving more relaxing, especially on long journeys and in heavy traffic.
• Improved Resale Value: Adds a desirable feature to your Mercedes, potentially increasing its market value.
• Modern Driving Experience: Brings older models up to par with the latest technological advancements.

2. Compatibility: Which Mercedes Models Can Be Retrofitted?

Before considering a Mercedes Distronic Plus retrofit, it’s essential to verify that your vehicle is compatible. Many newer Mercedes models come with pre-installed hardware, making the retrofit process straightforward.

2.1. Supported Models

According to CARDIAGTECH.NET, the following models are generally supported:

• A Class 2018+
• B Class 2019+
• CLA 2019+
• C Class 2018+
• GLC 2019+
• GLA 2020+
• GLB 2020+
• GLE 2019+
• GLS 2019+
• EQC 2018+
• EQA 2020+
• EQB 2021+
• G Wagon 2018+

Mercedes-Benz Models Supported for Distronic Plus Retrofit

2.2. Specific Model Considerations

• GLC/C Class: These models often require a replacement radar sensor, adding to the cost of the retrofit.
• GLE/GLS: These models may need an additional part behind the buttons due to different connector configurations in the USA-made vehicles.
• Newer Models (2023+): For models with the latest touch controls on the steering wheel, a Distronic Pro retrofit might be necessary.

2.3. Checking Compatibility

If you’re unsure whether your Mercedes is compatible, contact CARDIAGTECH.NET with your VIN number. They can quickly verify if your vehicle supports Distronic Plus retrofit.

3. Essential Components for Distronic Plus Retrofit

Retrofitting Mercedes Distronic Plus involves several key components to ensure seamless integration and functionality.

3.1. Distronic Steering Wheel Buttons

The most visible component is the set of buttons on the steering wheel that control the Distronic Plus system. These buttons allow you to set the desired speed, adjust the following distance, and engage or disengage the system.

Mercedes Distronic Plus Steering Wheel Buttons

3.2. Radar Sensor

The radar sensor is crucial for detecting the distance and speed of vehicles ahead. For some models like the GLC and C Class, a replacement radar sensor is necessary to ensure compatibility and optimal performance.

3.3. RemoteOBD Dongle

A RemoteOBD (On-Board Diagnostics) dongle is used for coding the Distronic Plus system to your vehicle’s computer. This device allows remote access and programming, making the retrofit process convenient regardless of your location.

3.4. Additional Wiring and Connectors

Depending on the model, additional wiring and connectors may be required to ensure proper integration of the Distronic Plus system. These components are typically plug-and-play, eliminating the need for soldering or wire splicing.

3.5. Optional Components

• Additional Part for GLE/GLS: For GLE and GLS models manufactured in the USA, an extra part behind the buttons may be needed to ensure proper functionality due to different connector configurations.

4. Step-by-Step Installation Guide

Retrofitting Mercedes Distronic Plus can be a DIY project with the right guidance. Here’s a step-by-step guide based on information from CARDIAGTECH.NET:

4.1. Preparation

1. Gather Necessary Tools: You will need basic tools like a screwdriver, plastic pry tools, and possibly a wrench, depending on your car model.
2. Review the Retrofit Guide: CARDIAGTECH.NET provides a detailed retrofit guide that includes step-by-step instructions and visual aids.
3. Ensure Vehicle Compatibility: Double-check that your Mercedes model is supported and identify any specific requirements (e.g., replacement radar sensor).

4.2. Steering Wheel Button Replacement

1. Disconnect the Battery: Disconnect the negative terminal of your car battery to prevent electrical accidents.
2. Remove the Airbag: Carefully remove the airbag from the steering wheel. This usually involves releasing retaining clips or screws.
3. Detach Old Buttons: Disconnect and remove the existing cruise control buttons from the steering wheel.
4. Install New Buttons: Connect the new Distronic Plus buttons, ensuring all connections are secure.
5. Reinstall Airbag: Carefully reinstall the airbag, making sure it is properly secured.
6. Reconnect Battery: Reconnect the negative terminal of the car battery.

Replacing Steering Wheel Buttons for Distronic Plus

4.3. Radar Sensor Replacement (If Required)

1. Remove Front MB Star: Rotate the front Mercedes-Benz star counter-clockwise to remove it.
2. Unclip Old Sensor: Unclip the old radar sensor from its mounting bracket.
3. Install New Sensor: Replace the old sensor with the new radar sensor provided by CARDIAGTECH.NET.
4. Additional Wiring: Connect any additional wiring required, ensuring all connections are plug-and-play.
5. Reinstall MB Star: Reattach the front Mercedes-Benz star.

4.4. Remote Coding

1. Connect RemoteOBD Dongle: Plug the RemoteOBD dongle into your car’s OBD port.
2. Follow Instructions: Follow the instructions provided by CARDIAGTECH.NET to initiate the remote coding process.
3. Coding Process: Allow the technicians at CARDIAGTECH.NET to remotely access your car’s computer and code the Distronic Plus system.
4. Verification: Verify that the system is functioning correctly after coding.

4.5. Final Checks

1. Test Distronic Plus: Test the Distronic Plus system in a safe environment to ensure it is working as expected.
2. Check for Errors: Use a diagnostic tool to check for any error codes and address them accordingly.
3. Secure All Connections: Double-check all connections to ensure they are secure and properly installed.

5. Common Issues and Troubleshooting

While retrofitting Mercedes Distronic Plus is generally straightforward, some issues may arise. Here are common problems and how to troubleshoot them:

5.1. System Not Activating

• Cause: Incorrect coding, faulty connections, or incompatible components.
• Solution: Double-check all connections, ensure the RemoteOBD dongle is properly connected, and contact CARDIAGTECH.NET for coding support.

5.2. Radar Sensor Malfunction

• Cause: Damaged radar sensor, incorrect installation, or wiring issues.
• Solution: Inspect the radar sensor for damage, verify the installation is correct, and check the wiring connections.

5.3. Steering Assist Not Working

• Cause: Coding errors, faulty steering assist module, or incorrect installation.
• Solution: Verify the coding is correct, check the steering assist module, and ensure all components are properly installed.

5.4. Error Codes

• Cause: Various issues, including sensor malfunctions, coding errors, or wiring problems.
• Solution: Use a diagnostic tool to read the error codes and address them according to the manufacturer’s recommendations.

5.5. Compatibility Issues

• Cause: Incorrect parts, incompatible model, or missing components.
• Solution: Verify that all parts are compatible with your Mercedes model, ensure all necessary components are installed, and contact CARDIAGTECH.NET for assistance.

6. Cost Analysis of Distronic Plus Retrofit

Understanding the costs involved in retrofitting Mercedes Distronic Plus is crucial for budgeting and planning. The total cost can vary depending on the model, required components, and installation method.

6.1. Component Costs

• Distronic Steering Wheel Buttons: $300 – $600
• Radar Sensor (if required): $250 – $500
• RemoteOBD Dongle: Included in the retrofit package from CARDIAGTECH.NET
• Additional Parts (GLE/GLS): $35 (approximate)

6.2. Installation Costs

• DIY Installation: $0 (excluding tools)
• Professional Installation: $200 – $500 (depending on the shop and model)
• CARDIAGTECH.NET Fitting (NW London): Free for most models (additional charge for GLC/C Class)

6.3. Total Cost Estimates

• Basic Retrofit (Steering Wheel Buttons Only): $300 – $600 (DIY) or $500 – $1100 (Professional)
• Retrofit with Radar Sensor Replacement: $550 – $1100 (DIY) or $750 – $1600 (Professional)

6.4. Factors Affecting Cost

• Model and Year: Newer models or those requiring additional components will cost more.
• Installation Method: DIY installation can save on labor costs but requires technical skills.
• Location: Prices for professional installation can vary depending on your location.
• Part Source: Genuine Mercedes-Benz parts may be more expensive than aftermarket alternatives.

7. Maintaining Your Distronic Plus System

Proper maintenance is essential to ensure the long-term reliability and performance of your Mercedes Distronic Plus system.

7.1. Regular Cleaning

Keep the radar sensor clean from dirt, snow, and debris. A clean sensor ensures accurate readings and optimal performance.

7.2. Software Updates

Ensure your vehicle’s software is up to date. Software updates can improve the performance and functionality of the Distronic Plus system.

7.3. Routine Inspections

Periodically inspect the wiring and connections to ensure they are secure and free from damage.

7.4. Professional Servicing

Schedule regular servicing with a qualified Mercedes-Benz technician to address any potential issues and maintain the system’s performance.

7.5. Addressing Error Codes

Promptly address any error codes that appear in your vehicle’s system. Ignoring error codes can lead to more significant problems and reduced system performance.

8. Frequently Asked Questions (FAQ)

8.1. What is Mercedes Distronic Plus?

Mercedes Distronic Plus is an advanced driver-assistance system (ADAS) that combines adaptive cruise control with steering assist to provide a semi-autonomous driving experience.

8.2. Which Mercedes models are compatible with Distronic Plus retrofit?

Compatible models include A Class 2018+, B Class 2019+, CLA 2019+, C Class 2018+, GLC 2019+, GLA 2020+, GLB 2020+, GLE 2019+, GLS 2019+, EQC 2018+, EQA 2020+, EQB 2021+, and G Wagon 2018+.

8.3. Do I need to replace the radar sensor for Distronic Plus retrofit?

Some models, like the GLC and C Class, require a replacement radar sensor.

8.4. Can I install Distronic Plus myself?

Yes, with the right tools and guidance, you can install Distronic Plus yourself. CARDIAGTECH.NET provides a detailed retrofit guide and remote coding services.

8.5. How much does Distronic Plus retrofit cost?

The cost varies depending on the model, required components, and installation method, but it typically ranges from $300 to $1600.

8.6. What is a RemoteOBD dongle?

A RemoteOBD (On-Board Diagnostics) dongle is used for coding the Distronic Plus system to your vehicle’s computer remotely.

8.7. How do I maintain my Distronic Plus system?

Regular cleaning, software updates, routine inspections, and professional servicing are essential for maintaining your Distronic Plus system.

8.8. What should I do if I encounter issues during installation?

Double-check all connections, ensure the RemoteOBD dongle is properly connected, and contact CARDIAGTECH.NET for coding support.

8.9. Does Distronic Plus improve my car’s resale value?

Yes, adding Distronic Plus can increase your car’s resale value by making it more appealing to potential buyers.

8.10. Is Distronic Plus worth the investment?

Yes, Distronic Plus enhances safety, convenience, and driving experience, making it a worthwhile investment for many Mercedes owners.

9. Why Choose CARDIAGTECH.NET for Your Distronic Plus Retrofit?

When it comes to retrofitting Mercedes Distronic Plus, choosing the right provider is crucial for a seamless and successful experience. CARDIAGTECH.NET offers several compelling reasons to be your preferred partner.

9.1. Expertise and Experience

CARDIAGTECH.NET specializes in Mercedes-Benz retrofits and has extensive experience with Distronic Plus installations. Their expertise ensures that your retrofit is performed correctly and efficiently.

9.2. Genuine Mercedes-Benz Parts

CARDIAGTECH.NET provides only genuine Mercedes-Benz parts, ensuring optimal compatibility and performance. This commitment to quality guarantees that your Distronic Plus system will function as intended.

9.3. Comprehensive Support

CARDIAGTECH.NET offers comprehensive support throughout the retrofit process, including detailed guides, remote coding services, and troubleshooting assistance. Their team is available to answer your questions and provide guidance every step of the way.

9.4. Remote Coding Convenience

With the RemoteOBD dongle, CARDIAGTECH.NET can remotely code the Distronic Plus system to your vehicle, regardless of your location. This convenient service eliminates the need for in-person visits and ensures a hassle-free retrofit experience.

9.5. Customer Satisfaction

CARDIAGTECH.NET is committed to customer satisfaction and strives to exceed your expectations. Their dedication to quality, support, and convenience makes them a trusted choice for Mercedes-Benz retrofits.