How to Activate Mercedes-Benz Traffic Sign Assist Function

The Mercedes Benz Traffic Sign Assist system, also known as Mercedes Speed Limit and Traffic Sign Assist, helps drivers by displaying speed limits and road signs directly on the instrument cluster. If you are searching for how to activate Mercedes Traffic Sign Assist, this guide from AutoExplain will show you the exact steps to enable the function on your vehicle. With our solution, you can ensure the feature works properly without confusion. If you need technical support, contact us via WhatsApp: +1(936)2896695.

Mercedes Benz Traffic Sign Assist Function

What Is Mercedes Benz Traffic Sign Assist?

Mercedes-Benz Traffic Sign Assist is an advanced driver assistance feature designed to improve both safety and convenience. The system uses a forward-facing camera combined with navigation map data to detect traffic signs in real-time.

It can identify and display:

• Current speed limits
• No-passing zones
• Other critical road signs

All detected information is shown directly on the instrument cluster or central display, with alerts provided when necessary. This ensures drivers stay informed of traffic regulations at all times, leading to safer and more compliant driving.

Mercedes Benz Traffic Sign Assist speed warning

Benefits of Mercedes Benz Traffic Sign Assist and Why You Should Activate It

Activating Mercedes-Benz Traffic Sign Assist brings several advantages that directly improve your driving experience:

• Enhanced Safety – By constantly monitoring road signs, the system helps you avoid accidental speeding or entering restricted zones.
• Increased Awareness – Real-time sign detection ensures you never miss important traffic rules, even in unfamiliar areas.
• Reduced Stress – The clear display of speed limits and warnings minimizes the need to guess or search for roadside signs.
• Compliance With Regulations – Staying updated with speed limits and no-passing zones helps you avoid fines and penalties.
• Value-Added Feature – Unlocking and activating this function allows you to fully utilize the advanced driver assistance technology already built into your Mercedes.

Mercedes Benz Traffic Sign Assist warning watch for pedestrians

In short, activating Traffic Sign Assist ensures a smarter, safer, and more confident driving experience.

However, activating Traffic Sign Assist is not as simple as switching it on from the menu. You need the right tools and software to complete the process. So, what equipment is required and how can you perform the activation? Let’s explore the details below.

Tools Required for Mercedes Speed Limit and Traffic Sign Assist

To activate Mercedes-Benz Traffic Sign Assist, you need proper diagnostic tools and software. Without the right equipment, the feature cannot be coded or enabled. Here is what you should prepare:

• Diagnostic Interface (VCI) – e.g., SD Connect C4, C5, or compatible VCI.
• Vediamo Software
• Stable Laptop Setup – running Windows, with Vediamo installed and properly configured.

If you do not yet have the required tools and software and need technical advice to choose the right compatible equipment, feel free to contact the AutoExplain technical team via WhatsApp at +1 (936) 289-6695 for free and accurate support.

Once you have prepared all the necessary tools, the next step is to follow the activation process carefully. Let’s go through each step to see exactly how to enable Mercedes-Benz Traffic Sign Assist.

How to Activate Mercedes Traffic Sign Assist

Activating Mercedes Traffic Sign Assist requires coding knowledge. To ensure the process is accurate and efficient, follow the step-by-step guide for Mercedes speed limit and Traffic Sign Assist below:

Sep 1: Connect your vehicle with Vediamo via VCI

Plug in the diagnostic device and establish a connection between the laptop and the vehicle.

Sep 2: Access the HU_204 Module

Open Vediamo software and connect to the HU_204 (Head Unit) control module.

Sep 3: Change MPC Speed Limit Display to “ON”

In the coding menu, activate the option to display speed limits.

Sep 4: Enable Camera or Map-Based Detection

• If your car has a front camera → activate “Show speed limit signs (MPC/Camera data).”
• If your car does not have a camera → activate “Map speed limit information.”

Once coded successfully, Traffic Sign Assist will appear in your display, showing real-time speed limits and road sign information.

Notes When Turning On Active Speed Limit Assist on Mercedes-Benz

Before activating Speed Limit Assist on Mercedes-Benz, keep in mind that it requires precise coding and the correct hardware setup. Any mistakes in configuration may lead to system errors or incomplete functionality.

• Ensure your vehicle supports Traffic Sign Assist and Active Speed Limit Assist
• A compatible camera or map-based speed limit data is required
• Use the correct diagnostic software (Vediamo/DTS Monaco) and VCI device
• Double-check module compatibility before coding (e.g., HU_204, MPC)
• Backup the original coding data before making changes
• Not all models/years support full activation — confirm before proceeding
• If unsure, seek professional technical support to avoid system errors

If you need remote technical support, please contact the AutoExplain team on WhatsApp at +1 (936) 289-6695 for the fastest assistance.

Remote Support Service for Mercedes Traffic Sign Assist Retrofit

At AutoExPlain, we provide professional remote technical support to help you activate or retrofit Mercedes Traffic Sign Assist quickly and safely. Our service is designed to assist both workshops and individual users who may not have the full expertise or confidence to perform coding and activation on their own.

Why choose AutoExPlain?

• Expertise – Our technicians are highly experienced in Mercedes coding and programming.
• Remote Convenience – No need to bring your car to a shop. We support you anytime, anywhere.
• Correct Tools & Guidance – We advise you on the right diagnostic devices and software before activation.
• Fast & Reliable – Step-by-step remote assistance ensures accuracy and efficiency.
• Free Consultation – If you’re unsure about compatibility or required tools, our team provides free guidance via WhatsApp.

With AutoExPlain, you get seamless activation of Mercedes Traffic Sign Assist, ensuring your vehicle is fully equipped with advanced driver assistance features. Contact us now via WhatsApp: +1 (936) 289-6695 for immediate assistance.

If you are a professional Mercedes technician but don’t yet have much experience with ECU coding and programming, don’t worry. At AutoExplain, our team of experts has years of hands-on experience, and all that knowledge has been distilled into the book “Vediamo Expert Techniques For Mercedes ECU Programming”. This guide will help you quickly master coding, programming, and unlocking the full potential of Vediamo, so you can confidently handle any Mercedes-Benz technical task.

You can see details about the book at: Vediamo Coding Manual

Activating Mercedes Benz Traffic Sign Assist bring extra safety, convenience, and confidence to every Mercedes-Benz driver. With the right tools, software, and proper coding, these functions can be fully activated or retrofitted to enhance your driving experience.

At AutoExPlain, we provide not only the technical know-how but also remote support services to ensure the process is smooth, accurate, and efficient. Whether you’re looking to activate existing features or retrofit new ones, our expert team is here to guide you step by step. Don’t hesitate to contact us via WhatsApp +1(936)2896695 for the fastest support!