Airbag control unit with part number 05094018AL

What is the function of the airbag control unit 05094018AL?

The airbag control unit with part number 05094018AL is the central control module for the passive safety system in certain Chrysler vehicles. It is responsible for monitoring crash sensors and ensuring the precise, split-second deployment of airbags and seatbelt pretensioners in the event of a collision, thereby protecting occupants.

The device continuously processes data from sensors distributed throughout the vehicle. When a collision exceeds predefined threshold values, it sends critical ignition signals to the pyrotechnic charges of the airbags and seatbelt pretensioners.

Thus, the proper functioning of this control unit is essential for the effectiveness of the entire restraint system. A failure disables these life-saving components and compromises vehicle safety, which is indicated by the airbag warning light.

Why does the control unit 05094018AL fail?

The most common cause of failure for the control unit 05094018AL is the storage of crash data after an accident, which triggers an internal lockout. Similarly, internal defects in electronic components on the circuit board—often due to aging, moisture, or thermal stress—can lead to complete unit failure.

Following an accident in which airbags or seatbelt pretensioners have deployed, the control unit permanently stores this information in its internal memory. This lockout prevents reuse and makes repair impossible without first erasing the crash data.

Another frequent issue is hardware component failure, affecting processors, memory chips, or sensors on the circuit board. Such internal faults often manifest as diagnostic error code B1111 (control unit defective), directly indicating a problem within the device itself.

How can you recognize a defect in the 05094018AL?

A defective airbag control unit 05094018AL primarily manifests as a constantly illuminated or flashing airbag warning light (SRS lamp) in the instrument cluster. Communication between the control unit and a diagnostic tool may also be lost, complicating fault analysis.

The airbag indicator light signals a system error. It fails to extinguish after starting the vehicle, indicating that the airbags and seatbelt pretensioners are disabled and would not deploy in the event of a crash.

After an accident, the warning light may flash, or error messages such as “Airbags defective” may appear. These are clear signs of stored crash data blocking the system.

Additional specific symptoms include a malfunctioning clock, total device failure when heated, or explicit error messages like “Component defective,” “Crash sensor defective,” or “Fuel shutoff valve defective.” Therefore, accurate diagnosis through reading error codes is the first step.

In which vehicles is 05094018AL installed?

The airbag control unit 05094018AL is specifically used in Chrysler vehicles. It mainly affects older model series, such as the Town & Country across its first three generations, as well as the Dynasty and Aries models. At Airbag24, this control unit is professionally refurbished for specific Chrysler models.

At Airbag24, we repair part number 05094018AL for the following Chrysler models:

Chrysler Town & Country (1st Generation, 2nd Generation, 3rd Generation)

Chrysler Town & Country (AS, GS, NS series)

Chrysler Dynasty (C series, model years 1988–1993)

Chrysler Aries (K series)

How does the repair of 05094018AL proceed at Airbag24?

At Airbag24, repairing the 05094018AL follows a standardized process that begins with a thorough incoming inspection. Technicians perform electronic repairs, replacing faulty components and erasing stored crash data. Finally, the unit is calibrated and tested on a test bench.

After removal and submission of the control unit, a comprehensive diagnosis is conducted to identify the exact cause of the fault—at the component level.

The actual refurbishment involves replacing defective parts, such as circuit board elements or sensors, and professionally resetting the software to clear crash data. This restores the device’s full functionality.

Before return shipping, the repaired control unit undergoes rigorous quality control: the fault memory is cleared, and all functions are verified. Airbag24 provides 2 years' statutory liability for defects on every repair.