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Pre-Safe Mode is an advanced safety feature found in Mercedes-Benz vehicles, designed to prepare the car and its occupants for an impending collision. However, in some cases, Pre-Safe Mode may be triggered unnecessarily due to sensor malfunctions or modifications, leading to inconveniences like restricted vehicle performance and error messages on the dashboard.
In this guide, we will explain how to turn off Pre-Safe Mode in Mercedes-Benz vehicles using DTS Monaco, a powerful engineering software tool used by professionals for in-depth vehicle diagnostics and coding.
Requirements to Turn Off Pre-Safe Mode in Mercedes-Benz
Before proceeding, ensure you have the following:
- DTS Monaco Software installed on your laptop.
- A compatible Mercedes-Benz diagnostic interface (e.g., C4, C5, or other approved devices).
- A stable connection to your vehicle’s ECU.
- Basic knowledge of vehicle coding to avoid accidental changes to other systems.
How to Turn Off Pre-Safe Mode in Mercedes-Benz Using DTS Monaco
DTS Monaco is an engineering tool used by Mercedes-Benz professionals for coding, programming, and ECU modifications. Here’s how you can use it to disable Pre-Safe Mode:
Step 1: Launch DTS Monaco
Ensure you have DTS Monaco installed on your diagnostic laptop and that your system is properly connected to the vehicle’s OBD-II port using a compatible interface (e.g., SD Connect C4, C5, or C6).
Step 2: Select Variant Coding Mode
- Open DTS Monaco and select Variant Coding Mode.
- This mode allows you to modify ECU settings and configurations.
Step 3: Access the EIS22 Module
- Locate and select EIS22 (Electronic Ignition Switch module).
- This module controls various security and operational settings, including Pre-Safe.
Step 4: Modify the Pre-Safe Setting
- Find the 299 Pre-Safe option in the coding list.
- Change the setting from “ja” (yes) to “nein” (no).
- This effectively disables Pre-Safe Mode, preventing the system from engaging in emergency situations.
Step 5: Apply the Changes
- Click “Do Coding” to save the new configuration.
- The system will process the change, and Pre-Safe Mode will be disabled.
Step 6: Restart the Vehicle
- Turn off the ignition and restart the car to ensure the changes take effect.
- Use a diagnostic tool to verify that Pre-Safe is now turned off.
Important Considerations
- Safety First – Disabling Pre-Safe Mode means your vehicle will not engage automatic safety responses in critical situations. Only disable it when necessary and re-enable it if required.
- Software Compatibility – Ensure you are using the correct DTS Monaco version that supports your Mercedes-Benz model.
- Professional Assistance – If you are unfamiliar with DTS Monaco or ECU coding, seek professional help to avoid unintended issues.
Need Expert Help? Contact AutoExplain!
If you require assistance with Mercedes-Benz diagnostics, coding, or programming, our expert team at AutoExplain is here to help. We provide remote support, step-by-step guidance, and professional automotive solutions.
📞 WhatsApp: +84967469410
🌐 Website: AutoExplain.com
Contact us today for expert support on Pre-Safe Mode, ECU coding, and more!
