Airbag control unit with part number 68316747AB

What is the function of the airbag control unit 68316747AB?

The airbag control unit with part number 68316747AB is the central control module for the occupant safety system (SRS) in certain Dodge Challenger models. Its primary task is to process sensor data to precisely and promptly deploy the airbags and seatbelt pretensioners in the event of a crash.

Technically speaking, this control unit continuously monitors all components of the airbag system, including crash sensors, seat occupancy mats, seatbelt pretensioners, and the airbag modules themselves. It processes signals from these sensors in real time to assess the severity and nature of an impact.

Based on this analysis, the electronics determine within milliseconds which restraint systems need to be activated. Following a crash, the unit also stores relevant crash data, enabling later analysis—but this storage results in the unit being locked out.

Why does the control unit 68316747AB fail?

A failure of the airbag control unit 68316747AB is usually caused by stored crash data after an accident. Other common causes include internal electronic malfunctions, water damage, or overvoltage, leading to total failure or communication issues with the diagnostic system.

The most frequent cause of an apparent malfunction is the retention of crash data. After a collision in which the airbags deployed, the control unit locks itself for safety reasons. It must be professionally reset to restore full functionality.

Internal electronic faults are another significant cause of failure. These include defects in processors, memory chips, or other circuit board components. Such damage can result from aging, manufacturing defects, or external factors like moisture or voltage surges in the vehicle’s electrical system.

Physical damage to wiring or connectors can also impair operation. Broken wires or corroded contacts disrupt communication between the control unit and sensors or actuators, resulting in persistent error messages.

How do you recognize a fault in the 68316747AB?

A fault in the control unit 68316747AB typically manifests as a permanently illuminated or flashing airbag warning light (SRS light) on the instrument cluster. Another clear indication is when the control unit cannot be accessed via a diagnostic tool or reports internal error codes.

The most obvious symptom is the persistently lit SRS warning light. This indicates that the safety system has detected a fault and may not function correctly in the event of a crash. The light does not extinguish even after restarting the engine.

Another critical sign is the lack of communication. When a specialist workshop attempts to read the fault memory using a diagnostic tool, it may be unable to establish a connection with the airbag control unit—often pointing to a severe internal hardware defect.

In which vehicles is the control unit 68316747AB installed?

The airbag control unit with part number 68316747AB is specifically designed for various generations and variants of the Dodge Challenger. It is used in second- and third-generation models, including facelifted versions up to 2023, as well as in the LC model series.

At Airbag24, we repair the control unit with part number 68316747AB for the following models:

Dodge Challenger 2nd Gen

Dodge Challenger 3rd Generation (2008–2014)

Dodge Challenger 3rd Generation Facelift (2014–2023)

Dodge Challenger LC

How is the control unit 68316747AB professionally repaired?

Repairing the control unit 68316747AB at Airbag24 involves precise fault analysis, targeted correction of the defect by experienced mechatronics technicians, and clearing stored crash data. Finally, the unit undergoes comprehensive quality testing to ensure full functionality.

After sending the unit to Airbag24, the repair process begins with a thorough diagnosis. Specialized testing equipment reads internal error logs and pinpoints the exact source of the problem on the circuit board—whether it’s a defective component or memory blocked by crash data.

This is followed by professional restoration, which includes erasing crash data, replacing faulty electronic parts, and reworking solder joints. Our technicians draw on years of experience working with control units from manufacturers such as Bosch, Continental, Delphi, Denso, and TRW.

Following successful repair, the control unit undergoes rigorous quality checks. All functions are simulated and tested to ensure compliance with manufacturer specifications and flawless performance in the vehicle. We provide 2 years' statutory liability for defects on every repair.