Delphi control unit
Delphi DCM3.7
DCM3.7 is a Delphi control unit that CARTESIAN recognises from the content of its file, whatever tool read it. It is listed for 9 vehicle brands (Audi, Chevrolet, Hyundai, Kia and others). The archive holds original files for it, collected since September 2026.
- Maker
- Delphi
- Vehicle brands
- 9
- Original files
- in the archive
- Checksum
- corrected on save
- Opening the unit
- High
- Last file added
- October 2026
Vehicles
Listed for Audi, Chevrolet, Hyundai, Kia, Opel, Seat, Škoda, Tata, Volkswagen.
Known vehicles: VAG commercial diesel (DCM3.7, SH72xxx).
Most seen in the archive: Volkswagen Polo, Seat Ibiza, Škoda Fabia 2, Chevrolet Captiva, Opel Antara, Chevrolet Cruze, Škoda Fabia, Škoda Fabia 1.
What CARTESIAN does with this unit
The solutions CARTESIAN offers for a file of this unit are those the file itself supports: DPF, EGR, AdBlue, lambda, flaps, start/stop, speed limiter, hot start fix and fault codes one by one by name. The app lists only what the opened file supports and refuses what it cannot change exactly.
Checksum: corrected automatically on every save, so the file is ready to write with your own tool.
Back to the original: with the archive's original file a modified unit can be returned to stock, and History keeps the original of every job you process.
Original files in the archive
The archive holds original files of this unit, collected since September 2026 and last added in October 2026. Search them in your account or in the app by hardware or software number, or hand it the file you read and the closest originals are suggested; downloads count against your plan's daily allowance.
| Hardware | Software |
|---|---|
| 4F0909444AA | 03P906021B |
| 03P906021AA | 03P906021AA |
| 03P906021B | 03P906021B |
| 4F0909444AA | 03P906021 |
| 4F0909444AA | 03P906021P |
| 4F0909444AA | 03P906021K |
| 03P906021AJ | 03P906021AJ |
| 03P906021AG | 03P906021AG |
| 4F0909444AA | 4F0909444AA |
| 03P906021BE | 03P906021BE |
- Typical file size
- 2,048.00 KB, 2,176.00 KB, 1,984.00 KB
- Fuel
- diesel 99%
- Brands in the archive
- Volkswagen, Seat, Škoda, Chevrolet, Hyundai, Opel
Opening the unit: high difficulty
- Ordinary circuit board in a two-part aluminium housing closed with sealant; thermal compound holds the board to the housing.
- On most versions direct access means freeing the board from both halves of the housing and soldering six or seven small bridges.
- Tool documentation advises refitting the unit and checking that the engine starts after opening, before any further work.
- Normally read and written through the diagnostic socket; opening is only for recovery, cloning or a full backup.
Advice: Keep it closed whenever the job can be done without opening it. If work inside the unit is needed, leave it to someone who opens this unit regularly.
General information: units with the same name can differ. Follow your tool's connection guide.
Related Delphi units
Open a Delphi DCM3.7 file in CARTESIAN
Download the app, sign in with your e-mail and open the file you read: the unit is recognised from its content and the solutions it supports are listed.