Airbag control unit with part number 04602430AE

What is the function of the airbag control unit 04602430AE?

The airbag control unit 04602430AE, also known as the SRS control unit, is the central control module for the occupant protection system in the Chrysler 300M LR. It processes data from crash sensors and, within fractions of a second, determines whether to deploy airbags and seatbelt pretensioners to protect vehicle occupants in the event of a collision.

This unit continuously monitors all components of the restraint system. Upon impact, the microprocessor inside the control unit analyzes incoming signals and activates the necessary safety devices. At the same time, it records relevant crash data that is essential for accident analysis and system diagnostics.

Technically equivalent part numbers that perform the same function include 04602430AF, 285001367, 343278, and 04896371AA. Proper functioning of this component is critical for vehicle safety.

Why does the airbag control unit 04602430AE fail?

The most common cause of failure for control unit 04602430AE is the storage of crash data after an accident, which the system locks out for safety reasons. Other causes include internal electronic defects due to aging, component failures such as capacitors or microprocessors, and external factors like water damage.

Following a collision, the control unit self‑locks to prevent unintended re‑deployment of airbags. This lock is permanent and can only be lifted through professional repair and deletion of the crash data.

Electronic malfunctions are often attributable to the natural aging of components. These may manifest as specific faults, such as complete failure when the unit heats up, or an internal error that disrupts communication with other vehicle systems—often triggering fault code B1000.

Water exposure can also lead to severe damage, as moisture causes corrosion on the circuit board and short circuits that destroy sensitive electronics.

How do you recognize a defect in the control unit 04602430AE?

The clearest symptom of a defect is the SRS airbag warning light that remains steadily illuminated or flashes on the dashboard. Another clear indication is when the control unit cannot be accessed via the diagnostic port and fails to communicate with a workshop tester. Specific malfunctions, such as a non‑functioning clock, may also point to issues with the control unit.

The airbag warning light signals a critical fault in the restraint system. In this state, airbags and seatbelt pretensioners are typically disabled, posing a significant safety risk in the event of another accident.

When workshops attempt to read the fault memory, communication with the control unit fails. Often, a generic fault code B1000 (internal control unit error) or a similar message appears, indicating an irreparable internal defect.

Even after repairs to body damage following an accident, the warning light remains active. This is due to crash data stored in the control unit, which prevents re‑activation until it is professionally erased.

In which vehicles is the control unit 04602430AE installed?

The airbag control unit with part number 04602430AE is primarily used in Chrysler models. It is mainly found in the Chrysler 300M of the LR series. Equivalent variants can also be found in other models from the same era, such as the Chrysler Voyager or Sebring.

At Airbag24, we repair part number 04602430AE and its compatible counterparts for the following specific models:

Chrysler: 300M (LR, model years 1998–2001), 300M (LR facelift, model years 2001–2004)

Due to compatibility with replacement numbers 04602430AF, 285001367, 343278, and 04896371AA, this control unit may also be installed in other Chrysler models of the same generation. A precise verification of the part number directly on the device provides final confirmation.

How is the repair of the control unit 04602430AE carried out?

Repair at Airbag24 follows a certified process. After submission, your control unit undergoes a detailed initial inspection to precisely identify the root cause of the fault. Depending on the issue, crash data is deleted or defective electronic components are replaced at the chip level. Following a final functional test, the unit is returned with 2 years' statutory liability for defects.

Upon receipt at Airbag24, a systematic analysis is performed on our test benches. Here, reported symptoms are verified, and the exact source of the problem—whether it’s a crash‑data lockout or a hardware defect—is pinpointed.

Repair is carried out with precision: stored crash data is professionally reset, ensuring the control unit is fully functional again. For electronic faults, our technicians replace defective components such as microprocessors, capacitors, or other circuit board modules.

Following repair, each control unit undergoes a comprehensive functional test to confirm it meets the specifications of a new part. Since the original vehicle coding is preserved, the unit is ready for immediate use after installation (plug-and-play).

What are the benefits of repair?

The primary advantage of repair is substantial cost savings—up to 70% compared to a new part, which often costs between €500 and €1,000. Additionally, repair is a sustainable solution that conserves resources and preserves the vehicle’s original programming, eliminating the need for costly re‑programming at the workshop.

From a financial standpoint, repair is by far the wiser choice. You receive a fully functional component at a fraction of the price of a new one, without compromising on safety.

An additional key benefit is that the repaired control unit is immediately ready for use. Because the vehicle‑specific coding remains intact, there’s no need for re‑programming—a process that can be complex and expensive with a new part.

By reusing the existing unit, you also make an active contribution to environmental protection. This helps avoid electronic waste and saves the energy and raw materials required to manufacture a new part. We offer 2 years' statutory liability for defects on all repairs.