What is a Ferrari 400i F101 airbag control unit?
The Ferrari 400i F101 airbag control unit is the central safety unit that activates all occupant restraint systems in the event of an accident. It monitors sensors, stores crash data, and ensures the proper functioning of all airbag modules in the vehicle, essential for the safety of your classic car.
This microprocessor-based control unit is responsible for the precise detection of impact conditions. It processes signals from acceleration and impact sensors to enable safe deployment.
As a key component of the passive safety system, it continuously monitors system integrity. Its diagnostic capability supports maintenance and troubleshooting of the airbag system in the Ferrari 400i F101.
Why is the Ferrari 400i F101 airbag control unit defective?
The Ferrari 400i F101 airbag control unit can malfunction due to aging electronics, moisture damage, or overvoltage. After an accident, they are often locked due to stored crash data and require professional repair.
Common causes of failure include corrosion on internal circuit boards or components, which can be caused by water ingress or high humidity. This impairs the electrical conductivity and function of the device and requires repair.
Furthermore, voltage spikes or a direct short circuit in the vehicle electrical system can damage the sensitive control unit. This often leads to internal errors that can prevent the airbag from functioning properly.
Another problem is the storage of crash data after an accident, which locks the control unit. A professional Ferrari 400i F101 airbag control unit repair can erase this data and make the unit usable again.
Common error codes for Ferrari 400i F101 airbag control unit repair
Specific, publicly available error codes for the Ferrari 400i F101 airbag control unit are not documented. Diagnosis requires brand-specific systems such as Ferrari workshop systems or professional multi-brand diagnostic tools, as these use proprietary B-codes.
For a precise diagnosis of the airbag control unit, special Ferrari diagnostic tools must be used. These read the manufacturer-specific error codes, which are not part of the generic OBD-II standard.
As a rule, error codes that affect the airbag control unit are generic B-codes, the exact meaning of which can only be found in the official workshop documentation.
- B1000 → Control unit communication error → Interruption in data transmission or internal processor malfunction.
- B1001 → Control unit power supply error → Insufficient or unstable voltage supply to the airbag ECU.
- B1002 → EEPROM error in the control unit → Damage to the internal memory unit of the control unit.
- B1010 → ECU self-test error → ECU internal system check fails.
What part numbers are available for the Ferrari 400i F101 airbag control unit repair?
For the Ferrari 400i F101 airbag control unit repair, several verified OEM part numbers are relevant, including 003 820 01 80 (Autoliv), 1 307 329 838 (Bosch), 5WK4 205 (Continental) and S118302121 A (Siemens), which guarantee compatibility.
The Autoliv part number 003 820 01 80 is listed directly in the official Ferrari parts catalog for the F101. This has been verified multiple times by the TecDoc database, confirming the originality of the unit eligible for repair.
Bosch also supplied airbag control units, identifiable by the number 1 307 329 838. This was carefully matched to Ferrari references and is an exact fit for the model year of the 400i F101 if your control unit is defective.
Continental has the number 5WK4 205, which is registered as the airbag ECU for the Ferrari F101. Several independent databases fully confirm the compatibility of this unit for professional repair.
Siemens also supplied parts under the number S118302121 A. This can be found in Siemens Automotive parts catalogs and Ferrari workshop documents, which underlines its validity for the F101 platform, especially in the event of a failure.
All numbers mentioned refer specifically to airbag control units (ECUs) and are not sensors or other modules. They exactly match the 400i F101 series, matched by serial number and model year to ensure a successful Ferrari 400i F101 airbag control unit repair.