Airbag control unit with part number 220244118

What is the function of Airbag Control Unit 220244118?

The airbag control unit with part number 220244118 is the central control module for the passive safety system in the Ferrari 458 Spider F142. It continuously analyzes data from acceleration and crash sensors to deploy airbags and seatbelt pretensioners precisely and within milliseconds in the event of a collision.

As a primary OEM component, this control unit is responsible for processing all relevant sensor signals. It coordinates the interaction between front, side, and knee airbags as well as seatbelt pretensioners to ensure optimal occupant protection.

An alternative but technically identical part number for this unit is 285850. Both numbers refer to the original Ferrari component specifically engineered to meet the requirements of the F142 chassis.

Why does control unit 220244118 fail?

The most common cause of failure for control unit 220244118 is the storage of crash data after an accident. Even minor collisions where not all airbags deploy can trigger an internal lockout of the unit. Additional defects arise from electronic malfunctions, water damage, or failure of individual components on the circuit board.

Following an accident—even if only a rear or knee airbag has deployed—the control unit’s internal memory stores irreversible crash data. For safety reasons, this lockout prevents further operation of the airbag system and can only be reset through specialized repair.

Electronic malfunctions are another widespread cause. Defects in individual components, sensors, or internal errors in the memory chip can impair functionality. Such issues are often repairable since they rarely affect the entire circuit board.

External factors like water damage also lead to corrosion and short circuits on the circuit board. During workshop diagnostics, it is therefore frequently recommended to consider professional inspection and repair before opting for an expensive replacement (often exceeding €1,000).

How do you recognize a defect in 220244118?

A defect in airbag control unit 220244118 primarily manifests as the airbag warning light remaining constantly illuminated in the cockpit. Additionally, workshops using diagnostic equipment often find they can no longer establish communication with the control unit to read or clear fault codes.

The clearest indication is the activation of the airbag warning lamp immediately after starting the vehicle. Unlike usual, it does not extinguish after a few seconds but stays lit permanently, signaling a critical fault in the safety system.

Another clear symptom is the lack of response from the control unit during diagnostic queries. If the workshop attempts to access the device via the OBD interface, the connection fails—indicating either an internal error or a lockout due to crash data.

Diagnostic logs may contain specific fault codes such as “side sensor error” or “internal control unit error,” directly pointing to a problem with the control unit itself rather than external sensor malfunctions.

In which vehicles is control unit 220244118 installed?

The airbag control unit with part number 220244118 was developed specifically for models manufactured by Ferrari. At Airbag24, this component is professionally refurbished for the corresponding vehicle model to restore full functionality of the safety system.

This control unit is exclusively used in the following model:

Ferrari: 458 Spider (F142 series, model years 2011–2015)

Repair represents a proven, cost-effective solution to maintain the safety and original condition of this high-performance vehicle without resorting to an expensive new part.

How is control unit 220244118 professionally repaired?

Professional repair of control unit 220244118 at Airbag24 includes diagnosing the reported fault, selectively erasing stored crash data, and replacing defective electronic components. Finally, the unit undergoes a comprehensive functional test to ensure proper activation of all airbag circuits.

After submitting the removed control unit along with a detailed fault description, an initial incoming inspection is performed. Technicians utilize modern diagnostic tools to pinpoint the exact cause of the issue—whether it’s a locked memory or a hardware defect.

The core of the repair involves clearing crash data from memory and restoring the unit to its factory settings. If components such as internal sensors or other electronic parts are damaged, they are expertly replaced.

Following repair, a comprehensive functional test is performed. This tests the control unit’s communication and ensures that all outputs for airbags and seatbelt pretensioners are activated correctly. All repairs come with 2 years' statutory liability for defects.