The right file, or nothing.

No. Open the ECU file, switch on the solutions you need and save. CARTESIAN finds the maps, fault-code tables and checksum blocks itself and applies each change for you: no hex or map editing.

Yes, automatically, on every file you save. The file is ready to write to the ECU with your own tool; no separate checksum tool or manual step is needed.

CARTESIAN never guesses. Each solution is checked against the file before it is applied; if a change cannot be made exactly, it tells you clearly and writes nothing, instead of risking the control unit.

Any. Bench, boot or OBD reads from the tool you already use: each file is recognised by its content, not by the tool that made it, and you write the saved file back with the same tool.

1602 control units across 106 brands, from passenger cars to commercial and agricultural vehicles. Search the coverage list on this page; new units are added every week, and on request.

Depending on the file: DPF, EGR, AdBlue, Lambda, flaps, start/stop, speed limiter and hot start fix, fault codes one by one by name, and IMMO OFF on supported control units. CARTESIAN lists only what the opened file supports.

Yes. CARTESIAN can turn a modified file back into its original from the archive, and History keeps the original of every job you process, so a car can always go back to stock.

Original files for a wide range of vehicles and the OEM flash files of VAG, Ford/JLR, Toyota and FCA, with VBF, FRF, SGO and CUW files converted to BIN. Search by make, ECU or part number, or give it your own file and the closest originals are suggested. Your plan sets how many original files you can download a day.

Several times a week: new versions add control units and refine solutions, and the app installs each one itself when it starts. The Updates section on this page shows the real figures.

No. CARTESIAN has simple annual plans with a daily file allowance instead of per-file credits; the larger plans add tools such as OEM file conversion and the checksum module. Pricing shows what each plan includes.

Per machine, on an annual plan. Your licence is created for your e-mail address; sign in to CARTESIAN with it and the machine is tied to that licence.

A Windows 10 or 11 PC and an internet connection. CARTESIAN works with the files your read tool produces; it does not replace your read tool.

From the Support tab in the app: ask a question or open a file request, for example an Eco or Stage 1 to 3 file or a control unit that is not covered yet, with your files and photos attached. The answer arrives in the app, as a notification and by e-mail, and we reply in all ten languages of the app.

The whole app is available in ten languages: Turkish, English, Spanish, Portuguese, German, French, Italian, Russian, Polish and Arabic.

No. Switching off a code only stops the control unit from reporting it; the part itself is not repaired. Use it for codes of equipment that has been removed, and repair real faults first.

It depends on the country and on how the vehicle is used: in many countries a vehicle may not be driven on public roads after such a change. These functions are meant only for uses the law allows, such as motorsport on closed courses, machines used off public roads or vehicles exported where the change is permitted. The workshop decides and is responsible.