Airbag control unit with part number 68371748AA

What is the function of Airbag Control Unit 68371748AA?

The airbag control unit with part number 68371748AA is a verified OEM Mopar component, serving as the central controller for the occupant protection system across various generations of the Dodge Charger. It analyzes sensor data to detect crash situations and, in the event of an accident, deploys the airbags and seatbelt pretensioners.

As the heart of the passive safety system, this module continuously processes information from acceleration and yaw rate sensors. When it detects an impact exceeding predefined threshold values, the control unit sends ignition signals to the appropriate pyrotechnic components of the restraint system.

At the same time, the unit logs all relevant events, including system faults and triggered crash incidents. This data is crucial for vehicle diagnostics and post-accident analysis.

Why does Airbag Control Unit 68371748AA fail?

The most common cause of failure is the storage of crash data after an accident, which locks the control unit. Other reasons include electronic defects in internal components such as voltage regulators or SMD parts, as well as communication errors on the CAN bus that necessitate repair.

Following an airbag deployment, a so‑called crash data record is permanently stored in the control unit’s memory. This lockout is a manufacturer‑imposed safety measure designed to prevent the use of a potentially compromised device. A professional repair can reset this data and restore full functionality.

On the hardware level, aging or defective electronic components often lead to failure. These include faulty voltage regulators, damaged SMD (Surface-Mount Device) components, or cold solder joints. External factors such as corrosion caused by water damage can also irreversibly damage internal circuit traces or memory chips (EEPROM/FLASH).

Communication issues—where the control unit becomes unreachable via the OBD interface—indicate defects in the CAN bus interfaces or contact damage. It is important to note that for Dodge Charger models, similar part numbers like 68371750AA and 68316744AA also exist, making precise compatibility verification essential before any repair.

How do you recognize a fault in 68371748AA?

A malfunction of the airbag control unit 68371748AA primarily manifests as a permanently illuminated airbag warning light on the dashboard. Additionally, during diagnostics, the control unit may become unresponsive, or specific error codes may be stored, indicating an internal fault or locked crash data.

The most noticeable symptom is the persistently lit airbag warning light. This indicates a fault in the restraint system and fails to extinguish after starting the vehicle, resulting in a significant defect during the mandatory technical inspection.

When attempting to read the fault memory, the diagnostic tool may be unable to establish communication with the airbag control unit. This lack of CAN communication is a clear sign of a serious electronic issue within the module.

Alternatively, error codes can be retrieved, directly pointing to an internal device fault, a faulty power supply, or the aforementioned locked crash data.

In which vehicles is 68371748AA installed?

This Mopar OEM control unit can be found in numerous Dodge Charger models spanning multiple generations and series. Due to variants such as 68371750AA, verifying the part number against the original unit before repair is critical for ensuring compatibility.

At Airbag24, we repair the control unit with part number 68371748AA for various Dodge models, particularly for the Charger across several generations:

Dodge Charger: 1st, 2nd, 3rd, 4th, and 5th Generation

Dodge Charger: 6th Generation (2006–2010), 7th Generation (2011–2015), and 7th Generation Facelift (2015–2023)

Dodge Charger Series: LX, LD, SRT LX, SRT LD

To avoid incorrect orders, it is essential to compare the part number printed on the control unit’s housing.

How is 68371748AA professionally repaired?

A professional repair at Airbag24 includes a detailed initial diagnosis, targeted elimination of hardware defects through component replacement, and safe resetting of stored crash data. A final functional test ensures full operability, backed by 2 years' statutory liability for defects.

After submitting the removed control unit to Airbag24, the repair follows a standardized and transparent process. First comes an initial diagnosis, where error codes are read and a microscopic inspection of the circuit board is performed to pinpoint the exact fault.

Subsequently, the actual electronic repair takes place. Defective SMD components, voltage regulators, or capacitors are professionally replaced, and damaged traces or solder joints are repaired. In cases of water damage, the circuit board is thoroughly cleaned and preserved.

A key step is processing the crash data. Stored event records are reset to factory settings, thereby lifting the device’s electronic lock. If vehicle-specific data such as the VIN needs to be restored, this is also performed at this stage.

Before being returned, each repaired control unit undergoes a comprehensive final inspection. During this process, communication, fault-free operation, and all safety‑critical functions are tested. We provide 2 years' statutory liability for defects on every repair performed.