Airbag control unit with part number 311930

What is the function of Airbag Control Unit 311930?

The airbag control unit with Ferrari part number 311930 is the central control module for the occupant protection system. It is specifically designed for the Ferrari 458 Speciale F142 and 458 Speciale A F142 models and is responsible for deploying airbags and seatbelt pretensioners within milliseconds in the event of a crash.

As the “brain” of the safety system, this module continuously processes data from various crash sensors distributed throughout the vehicle. In the event of a collision, it analyzes incoming signals and determines which restraint systems need to be activated to provide optimal protection for occupants.

The proper functioning of this control unit is therefore critical for safety. Any malfunction or failure will result in the entire airbag system being disabled, which could have fatal consequences in a real‑world scenario.

Why does Control Unit 311930 fail?

The most common cause of failure for Control Unit 311930 is the storage of crash data after an accident. This data internally locks the module, causing the warning light to remain illuminated permanently. Error codes such as B1111 directly indicate a defective or locked unit that must be reset.

After an airbag deployment, the control unit irrevocably writes a data record into its internal memory. This process locks the unit and prevents further use to ensure safety. The system enters a permanent fault state that can only be resolved through a targeted reset.

Although stored data is the primary cause, technicians also inspect the hardware for secondary damage during repairs. Defects in components like capacitors or damaged connector pins can likewise lead to malfunctions and are identified and rectified as part of a professional service.

How do you recognize a defect in Control Unit 311930?

A defect in the Ferrari Control Unit 311930 primarily manifests as the airbag warning light (SRS lamp) remaining constantly illuminated on the instrument cluster. The system is locked following a crash and no longer operational, confirmed by corresponding fault‑memory entries in the diagnostic tool.

The airbag warning light fails to extinguish after starting the vehicle. This is a clear indication that the control unit has registered a serious, non‑clearable error, rendering the restraint system inoperative.

During workshop diagnostics, the fault memory cannot be cleared. Often, error code B1111 is read, signaling an internal fault or blockage in the control unit, making repair or replacement unavoidable.

In which Ferrari models is Control Unit 311930 installed?

The airbag control unit with part number 311930 is exclusively used in high-performance Ferrari models. At Airbag24, we specialize in repairing this specific unit for the Ferrari 458 Speciale and Ferrari 458 Speciale A, restoring full functionality to the safety system.

Specifically, this control unit can be found in the following vehicles:

Ferrari 458 Speciale F142 (model years 2013–2016)

Ferrari 458 Speciale A F142 (model years 2014–2016)

How is Control Unit 311930 professionally repaired?

Repair of Control Unit 311930 involves electronic restoration. Upon submission to Airbag24, the unit is thoroughly analyzed, stored crash data is erased using specialized software, and the module is restored to its factory settings. We offer 2 years' statutory liability for defects on all repairs performed.

The process begins with the careful removal of the control unit from the vehicle. It is essential to disconnect the battery and wait at least 10 minutes to fully discharge any capacitors in the system. In the Ferrari 458, the unit is typically located in the center console or the trunk.

At Airbag24, the submitted module undergoes an initial inspection. Repairs focus on erasing crash data and resetting the fault memory—done at the chip level without replacing hardware, provided no additional defects are present.

Following successful repair, the control unit is returned to the customer. After reinstallation, functionality must be verified: the airbag warning light should extinguish as expected upon engine start-up, confirming full system readiness.

What are the benefits of repairing Control Unit 311930?

Repairing Control Unit 311930 offers substantial cost savings of up to 90% compared to purchasing a new unit, which can cost as much as €750. Once installed, the repaired unit is immediately fully functional, eliminating the need for complex reprogramming of the vehicle.

Instead of purchasing an expensive new part, refurbishment offers a cost-effective and environmentally friendly alternative. You receive the original, vehicle-specific unit back, eliminating compatibility issues from the outset.

Another advantage is the quick and hassle-free process. Once installed, the repaired control unit performs just like a new one—it’s “plug-and-play,” as the vehicle’s original configuration is preserved.