Original file
MB CL 55 original file SW 365088
Mercedes-Benz CL 55 Petrol 351.6 kW (478 HP) 365088 Original2003, Petrol, 351.6 kW (478 hp)
Calibrated ECU file for (SW 365088). Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.
How it works
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Read your ECU
With KESS, KTAG, AutoTuner or Flex. Keep the read: it is your way back.
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Match the numbers
Your read must show software 365088.
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Pay and download
Card, Apple Pay or Google Pay. The file is in your account straight away.
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Write it and drive
Write it back the way you read it. Not right for your car? We correct it free.
What the car needs
Required modifications: Factory.
Hardware
- Factory hardware: no modifications required
Software / calibration
- OEM calibration restored (recovery / immobiliser / coding work)
Original files are used to revert to factory state, repair after a faulty tune, or recover an ECU before service work.
Vehicle & ECU specifications
Exact vehicle, engine and ECU identifiers this calibration file is written for. Cross-check against your ECU before flashing.
| Vehicle make | Mercedes-Benz |
|---|---|
| Vehicle model | Cl 55 |
| Model year | 2003 |
| Fuel / Induction | Petrol |
| Factory power | 351.6 kW (478 HP) |
| Calibration stage | Original (Factory) |
| File format | BIN / ORI |
| Checksum | Pre-corrected (ready to flash) |
| Delivery | Instant download after payment |
About this calibration file
This is the factory (original) ECU calibration for the 2003 Mercedes-Benz Cl 55 Petrol, extracted from a genuine stock control unit. Use it as a verified backup before flashing any performance tune, or as a reference when recovering an ECU from a failed write.
This file matches a OEM ECU. Verify both identifiers in your flashing tool before writing — an ID mismatch is the most common cause of a bricked ECU. If you are unsure, upload a read of your original file via the file-request wizard and our engineers will confirm compatibility before you flash.
The file is delivered as a ready-to-flash BIN (and ORI backup where applicable) compatible with all major tools — KESS V2/V3, KTAG, AutoTuner, CMDFlash, Dimsport New Genius, MPPS, Flex, BFlash, PCMFlash, MMFlash — via OBD, bench or boot-mode as supported by your ECU family. Checksums are pre-computed and verified; no additional checksum tool is required. All files include a free revision if post-flash logs reveal a fuelling, boost or EGT issue.
Frequently asked questions
Product details
This product contains a complete original ECU backup (stock file) for MB CL 55 2003 Benzin 351.6KW 365088 . This original file corresponds to a factory engine output of approximately 351.6 kW (~478 HP). This file is ideal for ECU cloning, restoring the car back to stock and using it as a safe base for future remaps.
All ECU tuning files from TUNING-DATABASE are prepared for professional use. They are useful whenever you search by ECU ID, hardware or software number the ECU part number in the product title.Use this file for diagnostics, cloning, recovery or as a base for custom remapping.
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