Bosch control unit
Bosch MED17.5.20
MED17.5.20 is a Bosch control unit that CARTESIAN recognises from the content of its file, whatever tool read it. It is listed for 4 vehicle brands (Audi, Seat, Škoda, Volkswagen). The archive holds original files for it, collected since September 2026.
- Maker
- Bosch
- Vehicle brands
- 4
- Original files
- in the archive
- Checksum
- corrected on save
- Opening the unit
- Medium
- Last file added
- October 2026
Vehicles
Listed for Audi, Seat, Škoda, Volkswagen.
Most seen in the archive: Volkswagen Golf, Audi A3, Seat Leon, Seat Leon 1.4 TSI, Volkswagen Passat, Volkswagen Jetta, Volkswagen Golf 1.4 TSI, Volkswagen Sagitar.
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 |
|---|---|
| 0261S07359 | 1037528597 |
| 0261S04396 | 1037399087 |
| 0261S04394 | 1037396265 |
| 0261S04396 | 1037515772 |
| 0261S04396 | 1037507116 |
| 0261201788 | 1037390714 |
| 0261S04405 | 1037396271 |
| 0261201788 | 1037393741 |
| 0261201788 | 1037519112 |
| 0261S06105 | 1037520948 |
- Typical file size
- 2,048.00 KB, 1,504.00 KB, 256.00 KB
- Fuel
- petrol 93%, diesel 7%
- Brands in the archive
- Volkswagen, Audi, Seat, Škoda
Opening the unit: medium difficulty
- Ordinary circuit board, no gel, in a sealed aluminium housing.
- On most versions the lid is bonded with a sealant bead and one edge of the board sits in thermal compound; levering there can bend the board.
- The boot contact on the board is small; overheating it has broken tracks in documented cases.
- Most versions can be read and written through the connector, so opening is rarely needed.
Advice: Check first whether the job can be done without opening it. If you open it, cut the sealant, never lever on the board, and reseal it afterwards.
General information: units with the same name can differ. Follow your tool's connection guide.
Related Bosch units
Open a Bosch MED17.5.20 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.