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MasterX

IMMO OFF

Immobilizer, ECU by ECU.

Pick the manufacturer and the ECU: MasterX shows the supported procedure (flash, EEPROM or both) and the files to provide. Compatibility depends on the ECU and on the reads you drop.

IMMO OFF: 150 ECUs added or updated in MasterX 167

MasterX 167 · 08/10/2026

150 ECUs added or updated

145 new entries and 5 updates across 20 brands and groups, with 153 Flash and EEPROM profiles. Hino Denso generations 1, 2 and 3 are now a single entry.

IMMO OFF with MCU ID in MasterX 160

MasterX 160 · 02/10/2026

Guided MCU ID

For the control units that need it, MasterX walks you through entering the MCU ID, in eight languages. Seven control units: PSA MD1CS003, Renault MD1CS006, MD1CS016 and SID310, VAG MD1CS004, MG1CS001 and MG1CS008.

IMMO OFF

A dedicated space for immobiliser work.

Select the brand and ECU, then load the FLASH and EEPROM files required by the supported procedure. Compatibility depends on the ECU and the files provided.

FLASH & EEPROM

Separate file inputs for the supported immobiliser procedures.

Check before applying

Review the detected result before preparing the modified file.

MasterX — IMMO OFF, by manufacturer and ECU
Real capture · IMMO OFF · choose the manufacturer and the ECU: the method (flash, EEPROM or both) is shown, then drop your reads

Check the IMMO OFF list

The public list shows the supported method for each ECU. It is dated: always confirm in MasterX on your own reads.

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