Activation of PCMflash Module 99: Volvo/Renault TRW EMS2.3/EMS2.4 Bootloader
The PCMflash Module 99 is designed for professional work with engine control units (ECUs) used in Volvo and Renault trucks. This module enables stable and efficient interaction with TRW EMS2.3 and EMS2.4 systems based on MPC5674 and SPC5777 processors, making it an essential tool for diagnostics, firmware operations, and chip tuning.
Volvo/Renault EMS 2.3/2.4 Flash [RD/WR/CK]
Volvo/Renault EMS 2.3/2.4 EEPROM [RD/WR]
To activate the module you need a USB dongle PCMflash. When ordering, please indicate the Serial Number of the key.
Features and Functions of Module 99
Module 99 provides a comprehensive set of capabilities required for ECU service and calibration:
- Full Flash reading and writing (R/W)
- Automatic checksum (CS) verification and correction
- Stable operation in Bootloader mode (bench work)
- Optimized workflow for Volvo EMS 2.4 reading/writing and Renault EMS 2.3 firmware
Supported ECU Types
The module supports the following control units:
- Volvo EMS 2.3
- Volvo EMS 2.4
- Renault EMS 2.3
- Renault EMS 2.4
These ECUs are widely used in Euro 5 and Euro 6 trucks, including Volvo FH4 and Renault Trucks models.
Advantages of Using PCMflash
Choosing PCMflash Module 99 ensures:
- High reliability and stable communication with ECUs
- Regular software updates and protocol improvements
- Compatibility with trusted J2534 adapters, especially Scanmatik 2 PRO
- Efficient chip tuning for Volvo FH4 and Renault trucks
The solution is optimized for professionals who require precision when working with MPC5674 and SPC5777 architectures, including checksum correction (CS) and pinout handling for EMS 2.4.
Important Note
To use the module, a valid PCMflash USB protection key and base software are required. Operation depends on the ECU revision—Bootloader mode may allow bench work without opening the unit (refer to official documentation for details).
Run the program and on the main screen it says "USB dongle serial number"

Launch the program and click “Settings”

Paste the code to activate the module and click “Activate”

After rebooting, the activated module should be displayed, highlighted in bold text.

1. No Refunds or Modifications for Digital Licenses
Activated modules or licenses cannot be returned or refunded.
If an incorrect key or device number is entered by the customer, the purchase is not eligible for return.
Licenses cannot be modified, transferred, or reissued for another device under any circumstances.
2. Irreversible Order Processing
After the order status changes to “Waiting for activation”, the data has already been sent to the developer.
From this point onward, the order cannot be canceled, edited, corrected, or refunded.
3. Responsibility for Software Functionality
Our store is not responsible for the functionality, performance, or declared features of any software module.
We do not guarantee the listed functions because we are not the developer.
4. Accuracy of Product Information
Module and script descriptions are provided directly by the manufacturer.
IOBD.io is not responsible for any inaccuracies, missing details, or differences between the description and actual operation.
In disputed situations regarding functionality or listed features, the customer must contact the manufacturer.
5. Customer Responsibility for Installation
IOBD.io sells professional automotive diagnostic software and equipment.
Installation, setup, configuration, and compatibility checks must be performed by the customer.
We do not provide remote installation, programming, or setup services unless explicitly stated otherwise.
6. Required Technical Knowledge
These products are intended for users with basic technical knowledge in automotive diagnostics.
The customer is fully responsible for understanding the installation process and using the software and hardware correctly.
7. No Liability for Incorrect Usage
IOBD.IO is not responsible for issues caused by:
incorrect installation
unsupported or incompatible hardware
improper configuration
third-party interference