Airbag control unit with part number 04606927AC

What is the function of the airbag control unit 04606927AC?

The airbag control unit 04606927AC is the central control module for the passive safety systems in specific Dodge models. It continuously analyzes data from connected crash sensors to precisely and millisecond‑fast deploy the airbags and seatbelt pretensioners in the event of a collision, thereby protecting occupants.

As a core component of the Supplemental Restraint System (SRS), this module interprets signals from acceleration and pressure sensors. When predefined threshold values are exceeded, it sends ignition pulses to the corresponding airbag modules and seatbelt pretensioners. A malfunction inevitably results in deactivation of the entire system.

This control unit, often manufactured by the original equipment supplier Mopar (Chrysler/Dodge OEM), is also compatible with part number 68233535AA. Its proper functioning is critical for vehicle safety and maintaining roadworthiness.

Why does the control unit 04606927AC fail?

Failures of the control unit 04606927AC typically arise from stored crash data after an accident, which prevents further operation. Internal hardware faults in electronic components such as memory modules (error B1010) or general hardware defects (B1100) are also common, requiring component‑level repairs.

The most frequent cause of failure is the storage of crash data. After an airbag deployment, the control unit internally locks to prevent unintended re‑deployment. This condition often cannot be reset by conventional workshop diagnostics and requires specialized intervention.

Electrical and hardware malfunctions are also prevalent. Error codes such as B1010 (internal memory error) or B1100 (hardware fault) indicate physical damage to memory chips, capacitors, or other circuit board components. An unstable power supply can also trigger error code B1020. Common causes include aging, vibration, or moisture ingress.

Communication errors, indicated by codes like B1000 (control unit communication error), U0073 (control unit defective), or U0171 (loss of communication), may likewise point to internal defects. Sometimes calibration data is corrupted (B1120), or the memory becomes overloaded due to too many crash events (B120C).

How do you recognize a defect in the 04606927AC?

A defect in the control unit 04606927AC almost always manifests as a permanently illuminated or flashing airbag warning light (SRS indicator) on the instrument cluster. Additionally, crash data stored in the fault memory often cannot be cleared using standard diagnostic tools, indicating an internal lockout.

The most obvious symptom is the active SRS warning light. It alerts the driver that the passive safety system is inoperative and that airbags would not deploy in the event of a crash. In this state, the vehicle is no longer roadworthy.

Another clear sign is the inability to erase error codes, especially after an accident. The diagnostic tool continues to display messages such as “Crash Event Stored” or similar, even when no mechanical damage remains.

In some cases, the control unit becomes completely inaccessible to diagnostic equipment. It fails to respond to queries via the OBD interface, suggesting a severe internal hardware or communication fault.

In which vehicles is the 04606927AC installed?

The airbag control unit 04606927AC is primarily installed in Dodge vehicles. At Airbag24, we repair this module for specific generations of the Dodge Grand Caravan and Dodge Caravan models, offering a cost‑effective alternative to expensive new parts from manufacturers like Mopar.

At Airbag24, part number 04606927AC is professionally refurbished for the following models:

Dodge: Grand Caravan 2nd generation (1991–1995), Grand Caravan 5th generation (2008–2020), Caravan 2nd generation.

This repair service is a proven solution to restore full functionality of the airbag system without resorting to costly new parts, which often require additional coding.

How is the 04606927AC professionally repaired?

At Airbag24, the repair of the 04606927AC follows a systematic, certified process. Following an initial assessment, stored crash data is professionally erased based on the nature of the fault, defective electronic components such as memory chips or capacitors are replaced, and a final functional test is performed.

After submission to Airbag24, each control unit undergoes a comprehensive diagnosis. First, the fault memory is read to verify reported error codes and narrow down the root cause—whether it’s crash data, hardware issues, or software problems.

The actual repair is performed at the component level. Stored crash data is erased directly from the memory chip using specialized software. In cases of hardware defects, faulty components such as memory chips, processors, or capacitors are replaced with new, high-quality parts. The software is then calibrated.

Finally, each repaired control unit is tested on a test bench to simulate and verify the proper functioning of all systems. We provide a 12-month warranty on every repair.

What shipping options does Airbag24 offer?

Airbag24 provides flexible and secure shipping options for your control unit. You can either send the package yourself at no cost or arrange a convenient UPS pickup. For returns, you have access to free standard UPS shipping as well as faster express options, including cash-on-delivery.

For the outbound shipment, you have two choices: you can pack the removed control unit securely and ship it to us at your own expense, or take advantage of UPS’s free pickup service at your preferred location. Alternatively, you can drop off the unit in person at our facility.

After successful repair, the return shipment is provided free of charge via standard UPS delivery by default. If you need it faster, you can opt for UPS Express shipping for an additional fee. Both options can also be combined with cash-on-delivery if you prefer to pay upon receipt of the package.