Airbag control unit with part number 68316744AA

What is the function of the airbag control unit 68316744AA?

The airbag control unit with part number 68316744AA is an OEM safety module (SRS module) that serves as the central control unit for the passive restraint system in Dodge Charger models. It analyzes data from acceleration and seatbelt force sensors and, within milliseconds, determines whether to deploy airbags and tighten seatbelts.

As the “brain” of the airbag system, this control unit—often manufactured by suppliers such as Bosch or Delphi—is responsible for monitoring all safety‑related components. It continuously processes signals from crash sensors, seat occupancy mats, and seatbelt buckle detectors to precisely activate the appropriate restraint devices in the event of a collision. Proper functionality is essential to ensure occupant protection.

In addition, the 68316744AA module communicates constantly with other vehicle control units via the CAN bus. It logs internal faults and controls the airbag warning light on the instrument cluster to inform the driver about the system’s status. A fully functional control unit is therefore a fundamental requirement for vehicle operational safety and for passing the mandatory technical inspection.

Why does the airbag control unit 68316744AA fail?

The most common cause of failure for the 68316744AA control unit is the storage of crash data after an accident, which locks the device and prevents further deployment of airbags. Other defects arise from electronic malfunctions such as water damage, voltage surges, or failure of internal components, leading to communication loss or persistent error codes.

Following a crash, the SRS module irrevocably stores crash data in its internal memory. This manufacturer‑imposed safeguard locks the control unit and prevents re‑deployment of airbags. In such cases, professional data erasure and restoration of full functionality are absolutely necessary.

Electronic failures are another widespread cause. Moisture ingress through leaks in the vehicle can lead to corrosion on the circuit board, while voltage spikes in the vehicle’s electrical system may damage sensitive microcontrollers or memory chips. These issues often manifest as error code 65535, indicating an irreparable internal fault.

Communication problems over the CAN bus (CAN errors) or internal error 93F9 are also typical. Such faults may stem from defective solder joints or failed processors. The 68316744AA control unit shares technical similarities with numbers like 68371750AA or 68371748AA, commonly installed in seventh‑generation Dodge Chargers and capable of exhibiting similar fault patterns.

How do you recognize a defect in the 68316744AA control unit?

The clearest sign of a malfunction is a permanently illuminated or flashing airbag warning light (SRS light) on the dashboard. Often, the control unit can no longer be accessed by diagnostic equipment, or specific error codes such as 65535 (control unit failure) or communication errors are stored in the fault memory.

If the SRS warning light remains on continuously, the system indicates a critical fault. In this state, the entire airbag system is disabled, posing a significant safety risk in the event of a crash. Immediate inspection at a specialized workshop is strongly recommended.

Another clear symptom is the absence of communication. If the workshop’s diagnostic tool cannot access the airbag control unit, this points to a severe internal hardware failure. Reading or clearing error codes then becomes impossible.

Additionally, unusual accompanying symptoms may appear. According to workshop experience, these include a clock that stops working when heated, a blinking engine check light, specific error messages related to the knee airbag, or general CAN‑bus malfunctions—all attributable to a defect in the SRS module.

In which vehicles is the 68316744AA control unit installed?

The airbag control unit 68316744AA is specifically designed for various generations and variants of the Dodge Charger. It is used in the 6th and 7th generation series, as well as in special models such as the Charger LD and Hellcat LD. At Airbag24, we repair this control unit for a wide range of Dodge Charger models.

At Airbag24, the part number 68316744AA is professionally refurbished for the following models:

Dodge: Charger 1st Gen, Charger 4th Gen, Charger 5th Gen, Charger 6th Generation (2006–2010), Charger 7th Generation (2011–2015), Charger 7th Generation Facelift (2015–2023), Charger LD, Charger Hellcat LD.

This control unit is particularly common in U.S.-spec models based on the Chrysler LX platform. Due to technical similarities, specialized repair services frequently handle it in the context of Dodge Charger and Challenger models.

How is control unit 68316744AA professionally repaired?

At Airbag24, the repair process begins with a systematic analysis that examines the control unit at both the hardware and software levels. Next, stored crash data is erased, and any defective electronic components are replaced. A final functional test on a test bench ensures full operability, followed by 2 years’ statutory liability for defects.

After sending the unit to Airbag24, experienced mechatronics technicians perform a detailed fault diagnosis. They simulate sensor signals and inspect the board’s electronic components to pinpoint the exact source of the issue—whether it’s water damage, overvoltage, or an internal component failure.

The core of the repair involves addressing the identified cause. This includes properly erasing crash data from the memory chip and repairing or replacing faulty processors, resistors, or capacitors, using only high-quality replacement parts.

Following restoration, each control unit undergoes a comprehensive final test that simulates all functions under real-world conditions. Only when the device communicates flawlessly and correctly activates all outputs is it approved for return shipment. In rare cases where repair isn’t feasible, a remanufactured replacement unit is often available.