Airbag control unit with part number 236543

What is the function of Airbag Control Unit 236543?

The airbag control unit with part number 236543 is the central control module for the passive safety system in the Ferrari California F149 and California T. It processes signals from crash sensors to precisely deploy airbags and pretensioners in the event of a collision, thereby protecting occupants. It is also known by the alternative OEM number 220244101.

As the “brain” of the restraint system, this component continuously monitors all connected sensors, such as acceleration and yaw rate sensors. When sensor data indicates a collision requiring intervention, the control unit ignites the corresponding pyrotechnic charges of the airbags and seatbelt pretensioners within milliseconds. Therefore, its proper functioning is absolutely critical for safety.

The Perplexity analysis confirms that numbers 236543 and 220244101 are used for the same purpose in the aforementioned Ferrari models. A professional diagnosis and repair must therefore always take both reference numbers into account to ensure accurate identification and flawless operation.

Why does Control Unit 236543 fail?

A failure of Airbag Control Unit 236543 is often caused by stored crash data following an accident, which locks the unit internally. Other causes include internal electronic defects in components such as capacitors or the circuit board, as well as communication failures that prevent diagnostics via the OBD port.

The most common reason for replacement or repair is the storage of crash data. After an airbag deployment, the unit permanently writes information about the accident sequence into its memory. While this serves documentation purposes, it simultaneously prevents further functionality of the control unit, ensuring that it cannot be reused without prior inspection.

In addition to crash data, purely electronic faults may also occur. These include cold solder joints, defective capacitors, or other faulty components on the circuit board. Such issues often render the control unit inaccessible via the OBD diagnostic interface, preventing communication with workshop test equipment.

How do you recognize a defect in Control Unit 236543?

A defect in Control Unit 236543 primarily manifests as a constantly illuminated airbag warning light on the instrument cluster. Another clear symptom is the inability to communicate with the control unit during OBD diagnostics, resulting in no response from the airbag control unit and making troubleshooting extremely difficult.

The most obvious sign is the persistently lit airbag warning lamp. It does not extinguish after starting the engine, indicating that the entire restraint system is disabled and would not activate in the event of a crash.

An additional frequent symptom is complete refusal to communicate. If a workshop attempts to read the fault memory via the OBD port, they receive no response from the airbag control unit. This points to a severe internal fault or a lockout due to crash data.

In which models is Control Unit 236543 installed?

The airbag control unit with part number 236543 is specifically installed in the Ferrari California F149 (model years 2008–2017) and Ferrari California T F149. At Airbag24, we offer professional repairs exclusively for these vehicle types, also taking into account the alternative part number 220244101.

Our technical database and repair expertise confirm that this specific variant of the control unit is used only in the following vehicles:

Ferrari California F149 (2008–2017)

Ferrari California T F149

If your vehicle model is not listed but shares the same part number, please contact our technical service to verify compatibility.

How is Control Unit 236543 repaired?

After being sent to Airbag24, Control Unit 236543 undergoes a comprehensive incoming inspection. Stored crash data is professionally erased, and the hardware is examined for electronic defects in the circuit board, sensors, or capacitors. Following restoration, a final test is performed. We provide 2 years' statutory liability for defects on every repair.

The repair process at Airbag24 is designed to restore full OEM functionality. First, the unit is read out and the fault memory analyzed. If crash data is present, it is removed using specialized equipment to unlock the control unit.

This is followed by an in-depth electronic examination of the entire circuit board. Unlike a simple reprogramming, physical components are also inspected and replaced if necessary. This ensures that not only the symptoms but also the root causes of the defect are addressed. Final simulation tests guarantee flawless operation before return shipment.