Airbag control unit with part number 5094019AK

What is the function of Airbag Control Unit 5094019AK?

The airbag control unit with part number 5094019AK is the central safety module (SRS/ORC) for the 5th-generation Dodge Grand Caravan. It processes data from connected crash sensors and is responsible for the timely deployment of front and side airbags as well as seatbelt pretensioners, ensuring occupant safety in the event of a collision.

As a safety-critical component (ECU) from Mopar/Chrysler-Dodge, it serves as the brain of the vehicle’s passive safety system. It continuously monitors all airbag system components, ensuring they operate correctly in an emergency. Without a properly functioning control unit, the protective functions of airbags and seatbelt pretensioners cannot be guaranteed.

Typical Defects of Control Unit 5094019AK

The most common defect is the permanent storage of crash data after an accident, which activates the airbag warning light and cannot be cleared. In addition, internal control unit errors frequently occur, indicated by fault codes such as B1010 (memory error), B1100 (hardware error), or communication failures (B1000), requiring repair.

Following a crash, the control unit records a so‑called “crash event.” This entry locks the module for safety reasons, preventing further use even if the vehicle has been professionally repaired. The airbag warning light remains on, and the fault codes cannot be erased using standard diagnostic tools.

Another category of faults involves internal hardware and logic defects. These manifest as specific fault codes directly pointing to a malfunction within the control unit. For Dodge Grand Caravan models, these include B1000 (communication error), B1010 (internal EEPROM/Flash memory error), B1100 (general hardware failure), B1120 (faulty calibration data), or B120C (memory overflow).

External factors can also lead to failure. Moisture and water damage cause corrosion on connectors and the circuit board. Vibrations and temperature cycles may result in hairline cracks at solder joints—so‑called “cold solder joints”—in critical components like processors or connector pins. Such defects are also observed in related part numbers such as 04686939AF, 68062118AG, or 04686602AJ.

How do you recognize a defective 5094019AK airbag control unit?

A defective 5094019AK control unit almost always presents with a permanently illuminated airbag warning light (SRS lamp) in the instrument cluster. Often, the control unit can no longer be read via diagnostic equipment (communication failure), or internal, non‑erasable fault codes appear.

The most obvious symptom is the persistently lit airbag check light. It does not turn off after starting the engine, indicating a serious, stored error in the safety system.

Another clear sign is when a professional workshop’s diagnostic tool cannot establish communication with the airbag control unit. The module stops responding, often suggesting an internal hardware issue with the power supply or the communication IC.

If fault codes such as B1000, B1010, or B1100 appear during diagnostics and cannot be cleared, this is a direct indication of a defect within the control unit itself. The display may also show an additional message like “Check Airbag.”

In which vehicles is the 5094019AK control unit installed?

The 5094019AK airbag control unit is primarily used in Dodge models. At Airbag24, we professionally repair this control unit for the 5th‑generation Dodge Grand Caravan (model years approximately 2008–2020), as well as various versions of the Dodge Caravan and Grand Caravan.

At Airbag24, the airbag control unit with part number 5094019AK is professionally refurbished for the following models and series:

Dodge: 5th‑generation Grand Caravan (2008–2020), Grand Caravan S, Grand Caravan AS, Grand Caravan NS, Grand Caravan GS, Grand Caravan RT, 2nd‑generation Caravan, Caravan S, Caravan AS.

To ensure compatibility, always verify that the part number on the label of the removed control unit matches the one listed here.

How does the repair of 5094019AK proceed at Airbag24?

Repair at Airbag24 follows a standardized process: Upon receipt, the 5094019AK control unit undergoes a thorough analysis. Subsequently, crash data is electronically erased, defective components are replaced, and solder joints are reworked. A final functional test confirms full operability.

After submitting the removed control unit to Airbag24, the repair proceeds according to a proven, professional workflow. First, an initial inspection is performed, during which the fault memory and any stored crash data are read out.

Electronic refurbishment follows. In the event of a crash‑related entry, data in the internal memory (EEPROM/Flash) is selectively reset without altering the vehicle‑specific coding. For hardware defects, defective SMD components such as voltage regulators, driver ICs, or protective devices are replaced under a microscope, and cold solder joints are re‑soldered.

After repair, the control unit is tested on a specialized test bench. Communication is verified, and ignition circuits are simulated using load resistors. Only when all internal faults have been resolved and no crash data remains is the unit approved for return shipment. We provide 2 years' statutory liability for defects on all repairs.