Airbag control unit with part number 68405565AC

What is the function of the airbag control unit 68405565AC?

The airbag control unit with part number 68405565AC is an original OEM safety unit (SRS Control Unit) designed for specific Chrysler models. Its primary role is to monitor the entire restraint system, process sensor signals, and precisely deploy airbags and seatbelt pretensioners in the event of a crash.

The device serves as the central control unit for the occupant protection system. It continuously collects data from various acceleration and G‑sensors in the vehicle to detect an imminent collision.

In the event of a crash, the control unit’s logic determines within milliseconds which safety devices—such as front, side, or curtain airbags, as well as seatbelt pretensioners—must be activated to provide optimal occupant protection.

It is specifically engineered for models like the Chrysler Pacifica and Voyager and maintains constant communication with other vehicle control units to ensure system integrity.

What types of defects occur in 68405565AC?

Defects in the 68405565AC control unit typically manifest as stored crash data after an accident, which locks the system. Other common causes include internal electronic failures, communication issues with diagnostic tools, or physical damage such as water ingress that leads to component malfunctions.

The most frequent reason for repair requests is the storage of crash data. Following a collision, the control unit self‑locks for safety reasons, preventing further airbag deployment until the data is professionally cleared.

Internal electronic faults are also a widespread issue. These include defects in processors, memory modules, or sensor inputs on the circuit board. Water damage can likewise cause corrosion and short circuits, impairing functionality.

A complete loss of communication is a clear indication of a severe internal fault. In such cases, the control unit becomes unresponsive via the diagnostic interface, making on‑board fault analysis impossible.

The aforementioned failure modes apply not only to part number 68405565AC but also to closely related variants such as 68405565AB, 68405567AC, or 68526663AB, which are used in similar vehicle platforms.

How do you recognize a defect in 68405565AC?

A defective 68405565AC airbag control unit primarily shows itself through a permanently illuminated airbag warning light on the instrument cluster. Additionally, the control unit may become unresponsive during diagnostics, or specific error codes may be logged in the SRS system.

The most obvious symptom is the persistently lit airbag warning light (SRS light). It does not turn off after starting the engine, indicating a critical, stored fault in the system.

In many cases, a workshop cannot establish communication with the airbag control unit. The diagnostic tool reports “no communication,” preventing accurate on‑board fault diagnosis and pointing to a serious internal defect.

Especially in models like the Chrysler Pacifica WL, specific error codes may be stored in the fault memory, directly indicating an internal malfunction of the control unit. It is advisable to have a professional workshop generate an error log before removal.

In which models is 68405565AC installed?

The airbag control unit 68405565AC is mainly installed in various Chrysler models and generations. This includes the second‑generation Chrysler Pacifica, as well as several versions of the Chrysler Voyager, necessitating targeted repairs for these vehicle families.

At Airbag24, we repair part number 68405565AC and its variants for the following specific Chrysler models and series:

Chrysler Pacifica: 2nd Gen, RU (2016–2020), RU Facelift (from 2020), and the WL series, including hybrid versions.

Chrysler Voyager: The 5th generation S, AS, and GS series are also equipped with this type of control unit.

How does the repair process work at Airbag24?

Professional repair of the 68405565AC control unit involves a detailed initial inspection of the hardware and fault memory, followed by targeted restoration. This includes securely erasing crash data, replacing faulty electronic components, and conducting a final functional test.

After submitting the removed control unit to Airbag24, the repair follows a proven, safety‑focused procedure. First, a comprehensive preliminary analysis is performed to pinpoint the exact cause of the fault—whether it’s a stored crash data record or a hardware defect.

The core of the repair lies in electronic refurbishment. Stored crash data is completely and securely erased, ensuring the control unit is fully functional once again. In cases of hardware defects—such as those caused by water damage or short circuits—the affected components, like capacitors or processors on the circuit board, are professionally replaced.

Following repair, each control unit undergoes an intensive functional test. This checks communication, sensor signal processing, and the correct logic for airbag deployment. We provide 2 years' statutory liability for defects on all repairs performed.

What are the benefits of repairing the 68405565AC?

Repairing the 68405565AC control unit is an economically and technically sensible alternative to costly new purchases. You save significantly on expenses, retain your vehicle’s original configuration, and benefit from a swift process backed by 2 years’ statutory liability for defects.

The biggest advantage is substantial cost savings. While research indicates a new part often costs over 500 euros, repair is considerably more affordable, helping you stay within budget.

Since your vehicle’s original control unit is repaired, all vehicle-specific data and coding remain intact. No time-consuming reprogramming at the workshop is required after installation—unlike with a brand-new unit. The device can simply be reinstalled.

Moreover, refurbishment is more sustainable than replacement, conserving valuable resources. With 2 years' statutory liability for defects on the completed repair, you take no risks.