Airbag control unit with part number 04602406AC

What is the function of Airbag Control Unit 04602406AC?

The airbag control unit with part number 04602406AC is the central control module for the occupant protection system in Chrysler 300 models. It processes data from acceleration sensors to precisely deploy airbags and seatbelt pretensioners at the right moment during a crash, thereby ensuring the safety of vehicle occupants.

As the brain of the passive safety system, this control unit continuously monitors all connected components, including the various airbags in the vehicle, pyrotechnic seatbelt pretensioners, and crash sensors positioned at strategic points on the vehicle body.

In the event of a collision, the electronics analyze sensor data within milliseconds and determine which restraint systems need to be activated. After deployment, the unit stores crash data, necessitating subsequent repair of the component.

What defects occur in 04602406AC?

Typical defects of control unit 04602406AC are electronic in nature. Common issues include communication errors with diagnostic equipment, a permanently illuminated airbag warning light, or memory faults where crash data and error codes cannot be cleared. Internal CAN bus malfunctions and overvoltage damage are also well-known causes of failure.

A widespread problem is communication failure, where the control unit no longer responds to requests from diagnostic tools, preventing workshops from reading fault codes or performing diagnostics.

Following a crash, so‑called crash data is stored in the control unit’s internal memory. These cannot be erased using standard diagnostic tools, effectively disabling the unit even if there is no visible mechanical damage—this is one of the most frequent reasons for repair.

Other electronic defects include overvoltage damage caused by jump-starts or onboard electrical system issues, as well as internal component failures leading to CAN bus malfunctions or implausible error codes.

A repaired control unit is technically equivalent to a new part and compatible with additional part numbers such as 04602430AD, 68316752AB, 68371752AA, and 68105510AE, enhancing flexibility during repairs.

How do you recognize a defect in control unit 04602406AC?

A defect in control unit 04602406AC primarily manifests as a permanently illuminated airbag warning light on the instrument cluster. Additionally, the control unit may become unresponsive via the diagnostic interface, preventing workshops from accessing fault analysis. Error codes often cannot be permanently cleared.

The most obvious symptom is the persistently lit airbag indicator light, signaling a fault in the safety system and resulting in failure during the mandatory technical inspection (HU). In this state, the entire restraint system is typically inoperative.

Another clear sign is when a specialized workshop’s diagnostic tool cannot establish communication with the airbag control unit. The unit fails to respond to diagnostic commands, hindering precise fault analysis.

Error codes stored in the fault memory that cannot be cleared also point to an internal defect or retained crash data. Typical entries often directly indicate an internal control unit malfunction.

In which vehicles is 04602406AC installed?

The airbag control unit 04602406AC is specifically designed for Chrysler vehicles. It is mainly used in the first generation of the Chrysler 300, as well as in the Chrysler 300 LX produced between 2004 and 2010. Repairs are possible for both model variants.

At Airbag24, we repair part number 04602406AC for the following specific models:

Chrysler 300 First Generation

Chrysler 300 LX (model years 2004–2010)

How does repair proceed at Airbag24?

At Airbag24, repairing control unit 04602406AC begins with a comprehensive electronic preliminary diagnosis. Depending on the defect, faulty components are replaced, internal issues are resolved, and stored crash data is cleared. Following successful restoration, a final functional test ensures full operability.

To avoid misdiagnosis, it is recommended to have the vehicle inspected at a specialized workshop before removing the control unit. Diagnostic reports and fault logs should be included with the shipment to Airbag24 to expedite the repair process.

Upon receipt of the unit, our technicians conduct a detailed analysis to pinpoint the exact cause of the fault. Based on findings, defective electronic components are replaced, or complex memory errors such as crash data entries are reset at the hardware level.

Subsequently, the repaired control unit undergoes a comprehensive functional test on the test bench. This ensures that it meets the specifications of a new part and communicates flawlessly with the vehicle once again. We provide a 12-month warranty on every repair.

What shipping options are available?

For repairing your control unit at Airbag24, you can either send the component back yourself free of charge or arrange a convenient UPS pickup. Several return‑shipping options are available, including free standard UPS shipping, faster UPS Express shipping, as well as cash‑on‑delivery payment or in‑person collection.

For the outbound shipment, you have two choices: pack the control unit securely and send it yourself, or book a convenient UPS pickup directly from your preferred location, such as your workshop or home.

After the repair is completed, we offer flexible return‑shipping options. Standard UPS shipping is free for you. If you need it faster, you can opt for UPS Express shipping. Both options are also available with cash‑on‑delivery. Alternatively, you can pick up the repaired unit in person from our facility.