Script for Programming Mercedes VDO Instrument Clusters (NEC35xx) via OBD2 / CAN
This script is designed to work with Mercedes-Benz dashboards manufactured between 2013 and 2017, based on NEC3525 / NEC3526 processors.
The script only works with original iProg Pro programmer! Please write Serial Number and UID in the order.
Supported models include:
- W205 (analog needles)
- W447 (analog needles)
- W253 (analog needles)
- W222 (LCD pre-facelift)
Programming is performed via the OBD2 diagnostic port directly on the vehicle or via the CAN bus on the workbench.
Features and Capabilities:
- Odometer read/write
- EEPROM read/write
- Clear all event logs
- Clear all Assist+ history
Mileage Correction
For early versions (2013–2014), odometer correction is possible, but a CAN filter is required, as the ignition lock contains an active data copy.
If the cluster has already been patched previously, no filter is needed.
If not, and you want to patch it, you’ll need an external tool such as:
- Renesas V850E2 Locked script
- Or any third-party programmer that supports reading/writing locked NEC35xx chips.
Workflow:
- Read EEPROM and firmware version via OBD.
- Remove and disassemble the instrument cluster (soldering point photos included).
- Flash patched firmware - can be purchased separately.
- Reassemble the cluster and re-write the original EEPROM.
- You can now modify the mileage without a filter via CAN (on bench) or OBD (in vehicle).
Recommended Equipment:
OBD-II adapter based on MCP2515 for reliable communication and safe programming.
Open the program and click “Help” -> “About”.
Copy data from the program when placing an order
After completing the order, you will receive files, they must be added to the Scripts folder..
Launch the program and on the left side of the screen you will see the added scripts.
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From this point onward, the order cannot be canceled, edited, corrected, or refunded.
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We do not guarantee the listed functions because we are not the developer.
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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.
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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.
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incorrect installation
unsupported or incompatible hardware
improper configuration
third-party interference