Simplify your Maserati’s starting system with our professional Immobilizer OFF (Immo Off) ECU programming service for Maserati GranTurismo M145 4.2L and Maserati Quattroporte M139 4.2L models. This service reprograms your ECU/DME to bypass the immobilizer system, eliminating the need for the transponder “pill” inside the key fob.

This service is ideal for:

• Lost keys or unprogrammable transponders

• Failed or malfunctioning immobilizer modules

• Removing a common failure‑prone starting component

Important: This service is for blade‑style key vehicles only and is not compatible with proximity (smart) key systems.

Compatible Vehicles

• Maserati GranTurismo M145 – 4.2L

• Maserati Quattroporte M139 – 4.2L

Supported ECU Details

• Bosch ECU Part Number: 0 261 208 592

• Bosch Format: 0261208592

What This Service Includes

• Immobilizer OFF Programming – ECU is modified to start without a transponder

• Bench Testing – ECU is tested before return

• Plug‑and‑Play Solution – No immobilizer authorization required

• Alarm System Unaffected – Factory alarm remains fully functional

• Fast Turnaround – Typically completed within 5 business days after ECU receipt

How the Process Works

1. Purchase the service through our Shopify store.

2. Ship only the ECU to our facility (do not send keys or immobilizer parts).

3. We reprogram and test the ECU.

4. The ECU is returned ready for installation.

ECU Location

• Inside the passenger‑side floorboard compartment

Important Installation Step

• Disconnect the ignition switch transponder antenna from the steering column after reinstalling the ECU to prevent immobilizer conflicts.

Important Notes

• This is a service only — no ECU is supplied.

• ECU part number must match (0 261 208 592 or associated numbers).

• Vehicle must use a blade‑style key (not proximity).

• ECU may need to be opened, which can void any existing warranty.

• Intended for off‑road, track use, or vehicles with irreparable immobilizer faults. Customer is responsible for legal compliance.

Texas‑Based Service – Nationwide Mail‑In

We are based in San Marcos, Texas, serving Austin, San Antonio, Houston, Dallas–Fort Worth, and surrounding areas. Nationwide mail‑in service is available for Maserati ECU immobilizer programming.

Shipping Instructions

Securely package your ECU and include a note with:

• Full name

• Return shipping address

• Phone number or email

• Vehicle year and model

Ship to:

ClusterFix Texas
16044 N Hwy 123
San Marcos, TX 78666

After shipping, send tracking info to info@clusterfixtexas.com or text (512) 792‑1717.

FAQ

What does IMMO OFF do?
IMMO OFF disables the immobilizer system inside the ECU, allowing the vehicle to start without a transponder pill.

Will my factory alarm still work?
Yes. The alarm system remains fully functional.

Do I need to send keys or immobilizer components?
No. Send only the ECU.

Is this compatible with proximity key vehicles?
No. This service is blade‑key only.

Will the vehicle start normally after installation?
Yes. Once installed, the vehicle will start normally without immobilizer authorization.

How long does the service take?
Typically 5 business days after ECU receipt.

Do you offer this service outside Texas?
Yes. We offer nationwide mail‑in service.