Airbag control unit with part number 4606028

What is the function of Airbag Control Unit 4606028?

The airbag control unit with part number 4606028 is the central control module for the occupant safety system (SRS) in models such as the Chrysler Cirrus JA and Stratus JA. It processes signals from impact sensors and, in the event of a crash, determines whether to deploy airbags and seatbelt pretensioners. Additionally, it continuously monitors the functionality of all system components.

As the “brain” of the safety system, this module analyzes data from acceleration and crash sensors in real time. If it detects a collision requiring deployment, it sends ignition pulses to the appropriate airbags and seatbelt pretensioners.

At the same time, control unit 4606028 performs continuous self-tests. When faults are detected—such as issues with sensors, wiring, or the airbags themselves—the airbag warning light on the dashboard illuminates to alert the driver.

Why does control unit 4606028 fail?

Defects in control unit 4606028 typically arise from stored crash data after an accident, which prevents further operation. Other common causes include internal hardware failures on the circuit board leading to communication breakdowns, as well as aging of electronic components like chips and capacitors.

Following an airbag deployment, so‑called crash data is saved in the control unit’s memory. For safety reasons, this lockout prevents reusing the module and often cannot be reset by workshops, leaving the airbag warning light permanently illuminated.

Another frequent source of failure is internal defects on the circuit board, often resulting in error codes such as B1111 or the generic message “control unit defective.” These issues frequently stem from aging electronic components—processors, memory chips, or capacitors—that no longer meet their original specifications.

External factors, such as moisture ingress due to vehicle leaks or improper repair attempts, can also cause lasting damage to the control unit’s sensitive electronics, potentially leading to total failure.

How do you recognize a defect in control unit 4606028?

A faulty airbag control unit 4606028 primarily manifests as a persistently illuminated airbag warning light (SRS lamp) on the instrument cluster. Often, the control unit can no longer be read by a diagnostic tool, or error codes such as B1111 (“control unit defective”) are logged. A malfunctioning clock when exposed to heat may also indicate a problem.

The most definitive sign is the active airbag warning light, which remains on after starting the vehicle—indicating a persistent, safety‑critical fault within the system.

A complete loss of communication is another clear symptom: the workshop is unable to establish a connection with the airbag control unit using a diagnostic tool to access the fault memory. The module is no longer reachable on the vehicle’s network.

In some cases, specific error codes appear in the diagnostic report, directly pointing to an internal defect in the control unit. A typical code in this context is B1111, signaling an irreparable internal hardware failure.

Additionally, drivers may report specific issues, such as a flashing engine check light after an airbag deployment or a malfunctioning clock display under high interior temperatures—symptoms that suggest thermal problems affecting the electronics.

In which vehicles is control unit 4606028 installed?

The airbag control unit with part number 4606028 was specifically developed for certain models of the Chrysler Group. It is mainly used in the Chrysler Cirrus JA series from 1995 to 2000, as well as in the identical Chrysler Stratus JA. At Airbag24, repairs are available for these specific vehicles.

At Airbag24, professional repair services for control unit 4606028 are offered for the following models:

Chrysler Cirrus JA (model years 1995–2000)

Chrysler Stratus JA

How is control unit 4606028 professionally repaired?

Repair of control unit 4606028 at Airbag24 involves precise electronic diagnostics to pinpoint the fault. Defective components, such as chips or capacitors, are then replaced, and any stuck crash data is cleared. After restoration, the unit undergoes thorough testing to ensure proper functionality before being prepared for reinstallation. A 12-month warranty is provided on the repair.

Before removal, it is recommended to have the fault memory read out at a workshop and note down the error code. The control unit is typically located in the center console, often beneath the handbrake lever. Once removed, it is securely packaged and shipped to Airbag24.

At Airbag24, a detailed component-level diagnosis is followed. Technicians identify the faulty parts and replace them with new, high-quality components. At the same time, any existing crash data is erased from the device’s memory using specialized procedures.

After repair, the control unit undergoes a final test to ensure all functions have been restored. Once reinstalled in the vehicle, the fault memory should be cleared, after which the airbag warning light will go out.

Is it worth repairing control unit 4606028?

Yes, repairing control unit 4606028 is highly cost-effective. The savings compared to a new part—priced at approximately €400 according to workshop estimates—are substantial. Moreover, the repaired unit can be put back into service immediately, as the original vehicle configuration is preserved. Airbag24 also provides a 12-month warranty on the repair performed.

The biggest advantage is the significant cost reduction compared to purchasing a new part from an authorized Chrysler dealer. Repair costs are considerably lower than the new‑part price of around €400.

An additional key benefit is the preservation of the original coding and software. Since the vehicle‑specific unit is repaired, there is no need for expensive and time‑consuming reprogramming. After installation, the unit is fully functional right away (“plug-and-play”).

With a 12‑month warranty on the work performed, this repair offers a safe and reliable alternative to costly replacement.

What shipping options does Airbag24 offer?

You can either ship your control unit to Airbag24 free of charge yourself or arrange a convenient UPS pickup. For the return shipment after repair, you have the choice between free standard UPS shipping and optional UPS Express shipping. Both options are also available with cash-on-delivery, and self‑pickup is another possibility.

For sending your unit to us, you have two choices: drop off the package at the post office yourself, or use UPS’s convenient pickup service, which collects the package directly from your home or workshop.

Once the repair is complete, the control unit will be promptly returned to you. By default, this is done via free standard UPS shipping. If you need faster delivery, you can opt for UPS Express shipping.

To provide maximum flexibility in payment, both standard and express shipping are available as cash-on-delivery options. Of course, you can also pick up your repaired unit in person at Airbag24.