How to Active Agility (A) and Manual (M) mode in Mercedes

Mercedes-Benz vehicles are known for their performance, precision, and driving comfort. But did you know that some models have hidden A (Agility) and M (Manual) modes that can be activated through coding?

These driving modes are not always visible or accessible by default. With proper tools and the right coding procedure, you can unlock Agility Mode (A) — allowing the car to adapt to your driving style — and Manual Mode (M) — giving you full control over gear shifting.

Activating these features not only enhances the driving experience but also gives you deeper interaction with your vehicle’s performance system. In this guide, AutoExplain will show you how to active A and M modes using diagnostic tools and provide step-by-step instructions tailored for Mercedes models equipped with 7G-Tronic or 9G-Tronic transmissions.

Let’s get started.

What Are A (Active Agility) and M (Manual) Modes?

Mercedes vehicles often come with hidden driving modes designed to enhance responsiveness and driving enjoyment. Two of the most sought-after are:

A Mode – Active Agility

“A” stands for Agility, a dynamic mode that allows the vehicle to automatically adapt gear shifts and throttle response based on driving style. When activated, it provides a sportier and more responsive driving feel, especially useful in urban traffic or twisty roads.

M Mode – Manual

“M” stands for Manual, where the driver gains full control over gear selection. Instead of automatic shifting, you shift gears using paddles or the gear lever. This is ideal for sporty driving, track use, or when descending steep hills where engine braking is crucial.

Both modes are often preinstalled but disabled by default. With proper coding, you can activate them and access driving features usually reserved for AMG or higher trims.

Tools Required To Code Active Agility (A) And Manual (M) Mode In Mercedes

To activate the hidden A (Active Agility) and M (Manual) driving modes on Mercedes vehicles, you need the proper diagnostic tools and software. Below is the list of required tools and preparation steps:

Hardware Requirements

• Mercedes-Benz SD Connect C4 / C5 / VXDIAG diagnostic interface
• A laptop running Windows (preferably Windows 10, 64-bit)

Software Requirements

• Xentry Diagnostic Software (latest version recommended)
• DTS Monaco or Vediamo (optional, for advanced offline coding)
• Mercedes SMR-D or CBF coding files

Before proceeding with any coding, always create a backup of the original vehicle configuration to avoid potential errors or data loss.

At AutoExplain, we provide complete solutions including diagnostic devices and pre-installed software packages for Mercedes coding tasks. If you need help choosing the right tool or setting up your system, feel free to contact us via WhatsApp +1(936)2896695 for expert support and consultation.

How To Coding Active Agility (A) And Manual (M) Mode In Mercedes

For advanced users, Vediamo offers deeper control over the TCM (Transmission Control Module). Here’s how to code A and M modes using Vediamo:

Step 1: Connect TCM Module

Launch Vediamo and connect to the TCM (e.g., VGSNAG2 or VGSNAG3) using the ECU variant VCD_SCN_Variantkodierung.

Step 2: Enter Manual Coding

Go to Manual Coding section.

Step 3: Modify Byte Value

Locate Byte E6 and change its value from E6 to F6. This enables the display and function of A (Active Agility) and M (Manual) modes.

Step 4: Apply ECU Coding

After editing, select ECU Coding to apply the change.

Restart the vehicle and check the gear selector or cluster to verify that A and M modes are now active.

If you need support with anything, feel free to contact AutoExPlain via WhatsApp at +1 (936) 289-6695 for the best assistance.

Why Activate A And M Modes?

Activating A (Active Agility) and M (Manual) modes in your Mercedes enhances the driving experience by giving you more control over vehicle performance:

• A Mode (Active Agility): This mode dynamically adjusts suspension, throttle response, and steering based on driving conditions, offering a sportier, more responsive feel. It’s ideal for drivers who want sharper handling without sacrificing comfort.
• M Mode (Manual): In Manual mode, the driver gains full control over gear selection using paddle shifters or the gear selector. This mode is perfect for spirited driving or specific road conditions where automatic shifting isn’t ideal.

By enabling these modes, you unlock hidden performance potential that Mercedes has built into your vehicle but not made available by default. Whether you’re tuning for better handling or just want more control, activating these modes delivers a noticeable upgrade in driving dynamics.

Important Notes When Coding A And M Modes In Mercedes

Before proceeding with the coding process, take note of the following points to ensure safety and avoid system conflicts:

• Backup Original Coding: Always save the original coding data from the TCM (Transmission Control Module) before making any changes. This is crucial in case you need to revert to factory settings.
• Use Stable Power Supply: Ensure your vehicle’s battery is fully charged or use a reliable power supply to prevent interruption during the coding process.
• Correct ECU Targeting: Double-check that you’re connected to the correct ECU (usually VGS – 7G Tronic) in Vediamo to avoid modifying unrelated modules.
• Vehicle Compatibility: This coding process may not be available on all Mercedes models or software versions. Confirm compatibility before starting.
• Coding Risk Acknowledgment: Improper changes to TCM coding can lead to shift delays, malfunction warnings, or drivetrain errors. Proceed only if you’re confident in your knowledge—or seek professional support.
• Post-Coding Testing: After coding, test drive the vehicle in both A and M modes to ensure smooth operation and responsiveness.

Remote Service for Coding Active Agility (A) and Manual (M) Mode in Mercedes

AutoExPlain offers remote coding service to activate the Active Agility (A) and Manual (M) driving modes on Mercedes vehicles equipped with 7G-Tronic or 9G-Tronic transmissions. The entire process takes just 15–30 minutes and does not require visiting a workshop.

Why Choose AutoExPlain?

• No programming skills required – our expert technicians perform the entire coding process remotely.
• Complete support for tools and software – including Vediamo, DTS Monaco, StarFinder, and more.
• Safe and non-intrusive – the procedure does not affect any other vehicle functions.
• Free consultation – to verify compatibility and explain the process before starting.

AutoExPlain provides full solutions and setup support. Contact us via WhatsApp: +1(936)2896695 for immediate assistance.

Activating Active Agility (A) and Manual (M) modes in your Mercedes not only enhances your driving experience but also unlocks dynamic performance capabilities tailored to your preferences. With the right tools and expert guidance, this coding process is straightforward and safe. If you’re unsure or need help, AutoExplain is here to support you remotely with both software and technical solutions. For expert assistance, contact AutoExPlain via WhatsApp at +1 (936) 289-6695.