Manufacturer: Fiat-Alfa-Lancia
Brand: Marelli
Model: MJD 8F3.XX
Function: Immo off, immo virgin (autorecode)
Emulator: No
Marelli MJD8F3 Immo off: Fiat and Alfa Romeo
We offer a reliable immo off online service for the Magneti Marelli MJD 8F3.xx ECU, commonly found in Fiat and Alfa Romeo diesel vehicles. This service is intended for cases where the factory immobilizer system is preventing engine start—due to key loss, ECU replacement, or immo-related faults. Our method cleanly disables the immobilizer function while preserving normal ECU operation.
Supported vehicle models with Marelli MJD 8F3 ECU
This ECU variant is used in several 1.3 JTDm-equipped models, supported vehicles include:
- Fiat Ducato – 2.3 M-Jet
- Fiat Grande Punto – 1.3 M-Jet
- Fiat Punto EVO – 1.3 M-Jet
- Fiat Panda – 1.3 M-Jet/JTD
- Fiat Fiorino – 1.3 JTD
- Fiat Qubo – 1.3 M-Jet
- Alfa Romeo Mito – 1.3 M-Jet
MJD 8F3 Immo off procedure explained with CK Decode
To disable the immobilizer on the Marelli MJD 8F3, follow these steps:
- Download CKDecode through this link
- Click on the Functions Tab and select Fiat/Alfa/Lancia – MARELLI – MJD 8F3.XX – Immo off
- Read Flash with your interface and upload the file
- Click Process button
- Write the file processed by CKDecode
Some supported models:
- MJD 8F3.B1
- MJD 8F3.B4
- MJD 8F3.B6
- MJD 8F3.BD
- MJD 8F3.BN
- MJD 8F3.C1
- MJD 8F3.F6
- MJD 8F3.F7
- MJD 8F3.G1
- MJD 8F3.GB
- MJD 8F3.GG
- MJD 8F3.GH
- MJD 8F3.K3
- MJD 8F3.M1
- MJD 8F3.M2
- MJD 8F3.P1
- MJD 8F3.P2
- MJD 8F3.P8
- MJD 8F3.Q1
- MJD 8F3.Q3
- MJD 8F3.Q9
- MJD 8F3.QB
- MJD 8F3.QF
- MJD 8F3.X1
- MJD 8F3.X3
- MJD 8F3.Y1
- MJD 8F3.Y2
