ECU Finder

Search by Mercedes Vehicle Model

Find out which CBF and SMR-D file names your Mercedes-Benz uses

This resource helps you locate the list of CBF and SMR-D files used by your Mercedes.

These files are crucial for diagnostics, coding, and ECU programming with software like Xentry, Vediamo, and DTS Monaco.

If this tool becomes popular, we plan to add direct download links for these files and quick access to StarFinder images.

In the meantime, if you have Xentry installed, you can usually find the files in your Xentry installation folder.


What is an ECU?

ECU (Electronic Control Unit) is the brain of a modern car.

As new vehicle models are released, so do new and updated ECUs appear.

And while sometimes, the same ECU can be found in multiple vehicles, that is not always the case.

Therefore, by selecting the vehicle model above, you will be shown a list of ECUs that can be found on that specific vehicle.

Please note that not all the vehicles will have all these ECUs, because ECU availability is subject to the optional equipment the vehicle comes with.

Additionally, the Vehicle Model list doesn't differentiate between a pre-facelift and a post-facelift vehicle model. Therefore, the ECU list contains specifications for both.


What is a CBF file?

CBF (Caesar Binary File) provides a user-friendly interface for interacting with your Mercedes ECU during diagnostics, coding, and programming.

Think of it as a translator between you and your car's computer.

Since it contains a set of pre-determined instructions, compatible for the specific ECU, it facilitates your interaction with the car.

If you have Xentry installed, you will find these files by default at C:\Program Files (x86)\Mercedes-Benz\Xentry\MB_PKW\Caesar\cbf

When you want to flash these control units, CFF files are used. You can find them available for download at our Firmwares page


What is a SMR-D file?

SMR-D (Steuergerät Motor Reparatur-Daten) is the newer format for Mercedes ECU interaction.

Therefore, for older cars, you will find only CBF files, in newer cars, only SMR-D, and for cars during the transition period, you might find both.

If you have Xentry installed, you will find these files by default at C:\Program Files (x86)\Mercedes-Benz\Xentry\Kontexte\ODXProjekte\PKW_COMMON\dbr

When you want to flash these control units, SMR-F files are used. You can find them available for download at our Firmwares page