Module 91 - Mercedes Benz CRD3, CRD3P

Caption:

• RD: Read
• WR: Write
• CK: Checksum correction

Supported ECU

• Mercedes-Benz CRD3/CRD3P FLASH [RD/WR/CK]
• Mercedes-Benz CRD3/CRD3P EEPROM [RD/WR]

In version 1.3.2, a module has been added for working with all modifications of Delphi CRD3/CRD3P ECUs. The available protocols are as follows:

Mercedes-Benz CRD3/CRD3P FLASH [RD/WR/CK]
Mercedes-Benz CRD3/CRD3P EEPROM [RD/WR/CK]
Mercedes-Benz CRD3/CRD3P FLASH 800Kbps [RD/WR/CK]
Mercedes-Benz CRD3/CRD3P EEPROM 800Kbps [RD/WR/CK]
Explanation about speeds: In some models, such as the W205 and W907, the internal CAN bus operates at a speed of 800 Kbps. Therefore, when connecting to such ECUs on the bench (EXCLUSIVELY), you need to use these protocols. When working in vehicles, the speed will be the standard 500 Kbps. The connection setup can be found in the downloads.

Features: Reading, writing, CRC check and correction, and automatic disabling of tuning protection are supported. Working with the EEPROM is also supported. It’s recommended to write EEPROM on the bench to avoid issues with the immobilizer in case of any failures.

ECU cloning is possible; in such cases, when writing, press Ctrl+Shift+Write. This will rewrite service areas, including the boot. Warning: Any failure during this process could brick the ECU, and recovery would require opening it with module 53. When cloning, ensure that the hardware versions (see labels) match, otherwise, functionality is not guaranteed.

For normal in-vehicle operation, reading and writing the software have no special features. Interruptions are not an issue, the ignition can be turned off, and it’s possible to work even when there’s a central gateway requiring authorization (such as in the W907).

Reading and writing times: 5-10 minutes, depending on the vehicle model.

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