Resources for Tuners

Volkswagen MD1 oil-pressure patch

Free oil-pressure map analysis and patching for supported VAG Bosch MD1CS004 and MD1CP004 files. Sign in with your tuning.wales account to upload an original raw BIN or Intel HEX file and download a separate patched BIN.

Open the free oil-pressure tool

Supported files and limits

The current profile searches for the recovered V1 and V3 oil-pressure map patterns. An ECU name alone does not guarantee support; the file must contain an accepted map pattern. The upload and expanded image each have a 32 MiB limit. Intel HEX gaps are filled with FF and the download is raw binary.

Before using a patched file

The patch does not correct checksums. Correct and verify the checksum before writing with your normal programming equipment. Always use a clean original once: applying the patch again stacks its changes. Keep your original backup and confirm suitability for the vehicle and ECU software.

MAP4 and MAP5 share a temperature axis. The service rejects files when their map pairing is ambiguous. Supported pattern detection does not certify a vehicle result.