Manufacturer: Fiat-Alfa-Lancia
Brand: Marelli
Models: IAW5SF3 – IAW SF3.M2 – IAW SF3.M1
Function: Immo off, immo virgin
Emulator: No
Immo off Marelli IAW5SF3: Fiat and Lancia vehicles
If you’re dealing with a Magneti Marelli IAW5SF3 ECU and need to bypass the immobilizer, our expertly developed immo off solution is tailored for this unit. Typically mounted on 1.2L and 1.4L petrol or LPG engines, this ECU is found in a range of Fiat and Lancia models.
Our method ensures a permanent and safe immobilizer deactivation, with no need for emulators. This is the ideal fix for lost keys, ECU swaps, or retrofits — tested and verified for reliability.
Supported vehicle models with Marelli IAW 5SF3
Designed for versatility, the IAW5SF3 ECU works with numerous models, including:
- Fiat Punto EVO 1.4
- Fiat Grande Punto 1.2 / 1.4
- Fiat Punto (199) 1.2
- Fiat 500 1.2
- Fiat Panda 1.2
- Lancia Ypsilon 1.2 / 1.4
Reasons for immobilizer removal: benefits and risks
There are several reasons why vehicle owners and mechanics might opt to disable the immobilizer on the IAW5SF3 ECU:
- Faulty Immobilizer System: Immobilizer malfunctions can prevent the engine from starting, even when the correct key is used. In these cases, bypassing the system can restore normal engine operation.
- ECU Replacement: When installing a new or used IAW5SF3 ECU, the immobilizer may need to be bypassed to ensure compatibility with the vehicle’s existing components.
- Performance Upgrades: Some users choose to remove the immobilizer for custom vehicle modifications and performance tuning.
However, removing the immobilizer comes with risks. Disabling this security feature makes the vehicle more vulnerable to theft, and in some regions, immobilizer removal may be restricted by law.
Tools required for IAW5SF3 Immo off
For a successful immo off procedure on the IAW5SF3 ECU, you will need the following tools:
- EEPROM Reader/Writer: A key tool to access and modify the immobilizer data within the ECU.
- CK Decode Software: Essential for decoding and disabling the immobilizer.
- Soldering Tools (if needed): In some cases, accessing the ECU’s EEPROM might require delicate soldering to attach leads for the reader.
Marelli IAW5SF3 Immo off by using CK Decode
CK Decode is one of the most reliable and widely used software solutions for performing immo off procedures. It allows users to easily remove immobilizer data from Magneti Marelli ECUs, including the IAW5SF3. Here’s how to use it:
- Download CKDecode through this link
- Click on the Functions Tab and select FIAT/ALFA/LANCIA – MARELLI – IAW5SF3.XX – Immo off
- Read Flash with your interface and upload the files
- Click Process button
- Write the file processed by CKDecode
