Airbag control unit with part number 05084001AC

What is the function of the airbag control unit 05084001AC?

The airbag control unit with part number 05084001AC is the central control module for the occupant protection system in the Chrysler Sebring FJ Coupé (1995–2000). It processes signals from the acceleration sensors and, within milliseconds, determines whether to deploy airbags and seatbelt pretensioners to protect occupants during a collision.

The 05084001AC control unit is a critical safety component. Its primary task is continuously monitoring vehicle dynamics via connected crash sensors.

In the event of a collision, the internal electronics analyze incoming data. If predefined thresholds indicating an accident are exceeded, the unit sends ignition pulses to the corresponding airbag modules and seatbelt pretensioners.

After deployment, the unit stores relevant crash data—known as “crash data”—and locks itself to prevent further use. This is a manufacturer‑specified safety measure.

What defects occur in the 05084001AC?

Typical defects of the 05084001AC control unit include stored crash data after an accident, which prevents further operation. Communication issues (error codes U101100, U015100) or internal electronic faults—caused by component aging, moisture, or voltage spikes—are also common.

A frequent reason for repair is the storage of crash data. Following an accident, the unit is factory‑locked and must be professionally reset to restore full functionality.

Communication failures, indicated by error codes such as U101100 or U015100 in the vehicle’s diagnostic memory, often point to an internal fault in the control electronics. Processors or communication modules on the circuit board may be affected.

General electronic malfunctions or water damage can also lead to failure. Moisture corrodes traces and components, while age‑related defects in capacitors or memory chips result in implausible error messages and a lit airbag warning light.

How do you recognize a defect in the 05084001AC control unit?

A defect in the 05084001AC airbag control unit almost always manifests as a permanently or intermittently illuminated airbag warning light on the instrument cluster. Another clear sign is when the control unit cannot be accessed via diagnostic software, with error codes like U101100 or U015100 stored in the memory.

The most obvious symptom of an airbag system malfunction is the persistently lit warning light, signaling that the system is not operational and may fail to deploy in the event of a crash.

If a workshop attempts to read the fault memory but cannot establish communication with the airbag control unit, this indicates a serious communication issue—strongly suggesting a defect within the control unit itself.

The specific error codes U101100 (loss of communication with ECM/PCM) or U015100 (loss of communication with the restraint system control module) directly identify the 05084001AC control unit as the source of the problem during diagnosis.

In which vehicles is the 05084001AC control unit installed?

The airbag control unit with part number 05084001AC was specifically developed for the Chrysler Sebring. At Airbag24, this control unit is professionally refurbished for the Chrysler Sebring FJ Coupé models from 1995 to 2000.

This control unit is found exclusively in a specific vehicle generation. At Airbag24, we service part number 05084001AC for the following model:

Chrysler Sebring FJ Coupé (1995–2000)

How does the repair of the 05084001AC proceed at Airbag24?

At Airbag24, the 05084001AC control unit undergoes an initial inspection upon receipt to precisely diagnose the fault. Stored crash data is then erased, electronic defects at the component level are repaired, and the unit is restored to its factory condition. A final functional test ensures quality.

Once the removed control unit arrives at Airbag24, a standardized repair process begins. First, the device is connected to specialized test benches to reproduce reported errors and perform an accurate diagnosis.

The core of the repair involves professionally erasing stored crash data and addressing the root cause of the fault. This may include replacing defective microcontrollers, memory chips, or other electronic components on the circuit board.

Following restoration, each control unit undergoes a comprehensive functional test that simulates communication and all safety‑critical functions. Only after successful completion is the unit approved for return shipment, including a 12‑month warranty on the repair performed.

What shipping options are available at Airbag24?

You can either ship your control unit to Airbag24 yourself at no cost or arrange a convenient UPS pickup. For the return shipment, you have the choice between free standard UPS shipping and faster express options. A local pickup is also possible by prior arrangement.

You have several ways to send us your defective control unit. You can pack it yourself and send it to us free of charge, or opt for the convenient UPS pickup service arranged by us at your preferred location.

For returning the repaired unit, we offer free standard UPS shipping as the default option. If you need it sooner, you can choose UPS Express shipping.

Both standard and express shipping can optionally be paid for via cash on delivery. Alternatively, once the repair is complete and agreed upon, you can pick up your repaired control unit directly from our premises.