Airbag control unit with part number 68029112AB

What is the function of the airbag control unit 68029112AB?

The airbag control unit with part number 68029112AB is the central control module for the occupant protection system in Dodge Avenger models. It processes data from the acceleration sensors and, in the event of a crash, determines which airbags and seatbelt pretensioners should be deployed to provide optimal protection for occupants.

As the heart of the passive safety system, this control unit continuously monitors all connected components, including the crash sensors located at the front and sides of the vehicle, as well as the airbag modules themselves.

The primary task of the device is to evaluate sensor data in real time. If it detects a collision severe enough to pose a risk to occupants, it sends ignition signals to the appropriate restraint systems within milliseconds.

Why does the airbag control unit 68029112AB fail?

A common reason for failure of the control unit 68029112AB is the storage of crash data after an accident, which causes the module to become locked. Other causes include internal electronic malfunctions, communication errors on the CAN bus, or physical damage resulting from water ingress or accident impacts.

Following a collision in which the airbags have deployed, the control unit stores so‑called crash data. This internal lockout ensures safety by preventing reuse without professional inspection and repair. The module is then disabled for normal operation.

Internal electronic faults are also a frequent cause. Defective components on the circuit board, CAN bus errors, or issues with the internal memory can lead to malfunctions, often manifesting as persistent error codes or complete loss of communication.

External factors such as water damage can cause corrosion on the circuit board and short circuits. Likewise, direct mechanical damage to the housing or connectors caused by an accident may impair the control unit’s functionality.

How do you recognize a fault in the control unit 68029112AB?

A defective airbag control unit 68029112AB is primarily indicated by the airbag warning light remaining constantly illuminated in the instrument cluster. Additionally, the control unit may become inaccessible via diagnostic equipment, or specific error codes indicating an internal fault may be stored.

The most obvious sign is the active airbag warning light, which fails to extinguish after starting the vehicle, signaling a malfunction in the safety system that requires immediate inspection.

Another clear symptom occurs when the workshop’s diagnostic tool cannot establish communication with the airbag control unit. Such a communication breakdown often points to a serious internal defect within the control module.

If error codes are read out indicating an “internal control unit fault” or “crash data stored,” the root cause lies directly within the device itself. These errors cannot be resolved simply by clearing them.

In which vehicles is the control unit 68029112AB installed?

The airbag control unit with part number 68029112AB is specifically designed for various generations and variants of the Dodge Avenger. At Airbag24, we offer professional repair services for all models where this control unit is factory‑installed.

At Airbag24, we repair part number 68029112AB for the following Dodge models:

Dodge Avenger 1st Gen (First Generation)

Dodge Avenger 2nd Gen (Second Generation)

Dodge Avenger Sedan (2007–2011) as well as the sedan facelift model (2011–2014)

How does the repair of the control unit 68029112AB proceed?

Repair at Airbag24 follows a standardized process: After submitting the removed control unit, a comprehensive diagnosis is performed to pinpoint the source of the fault. Stored crash data is then erased, defective electronic components are replaced, and finally, the unit undergoes a final functional test.

Once the defective control unit 68029112AB arrives at Airbag24, our technicians conduct a thorough analysis. They read out the fault memory to determine whether crash data is stored or if an electronic fault exists.

The next step involves actual restoration. Stored crash data is professionally reset, restoring full functionality to the module. For electronic issues such as CAN bus errors or internal defects, faulty components on the circuit board are identified and replaced with high‑quality new parts.

After successful repair, each control unit undergoes a functional test to ensure proper operation. We provide 2 years' statutory liability for defects on every repaired unit.