Airbag control unit with part number 68371752AA

What is the function of Airbag Control Unit 68371752AA?

The airbag control unit with part number 68371752AA is the central control module for the passive safety system (SRS – Supplemental Restraint System) in various Chrysler 300 models. It processes data from crash and acceleration sensors to precisely deploy airbags and seatbelt pretensioners in the event of a collision, thereby protecting occupants.

This control unit, also known as the ECU (Electronic Control Unit), serves as the brain of the entire airbag system. It continuously monitors all connected components—such as sensors, airbag igniters, and seatbelt pretensioners—for proper functionality.

This specific part number corresponds to a component used in Chrysler vehicles, typically starting around the 2015 model year. Technically, it is recognized as a direct replacement for part number 68316752AB, which is important when searching for replacement parts or performing repairs.

The proper functioning of 68371752AA is critical for safety. Any internal malfunction or communication error can prevent the entire restraint system from operating correctly during an emergency, making immediate diagnosis essential whenever the airbag warning light illuminates.

Why does Control Unit 68371752AA fail?

The most common cause of failure for Control Unit 68371752AA is the storage of crash data after an accident, which locks the unit. Other causes include electronic malfunctions on the circuit board, water damage, physical damage to wiring or connectors, and faults originating from defective peripheral devices such as seat occupancy mats or sensors.

Following an airbag deployment, the control unit permanently stores so‑called crash data. This permanent recording is intentionally designed by the manufacturer and renders the module unusable for further use. In many cases, repair is possible by erasing this stored data—provided there are no irreparable hardware damages.

Electronic defects represent another frequent source of failure. These include cold solder joints, faulty components on the circuit board, or internal errors within the memory chip. Such issues may occur even without a crash and can likewise disable the system.

External factors like water ingress through leaks in the vehicle can lead to corrosion on the circuit board and cause short circuits. Similarly, mechanical problems—such as broken wires, incorrect wiring, or loose connectors—can disrupt communication and trigger error codes.

How do you recognize a defect in 68371752AA?

A defect in Airbag Control Unit 68371752AA primarily manifests as a persistently illuminated airbag warning light on the instrument panel. Often, communication with the control unit via a diagnostic tool becomes impossible, or specific internal fault codes are logged in the fault memory, indicating a problem within the device itself.

The most noticeable and definitive symptom is the airbag warning light. It fails to extinguish after starting the vehicle, signaling a malfunction in the safety system. Ignoring this warning poses serious safety risks, as the protective functions are no longer guaranteed.

During workshop diagnostics, it often becomes apparent that the control unit is unresponsive. The diagnostic tool cannot establish a connection to read the fault memory, suggesting a severe internal fault or a power supply issue.

Alternatively, specific fault codes may be retrieved, directly pointing to an “internal fault in the control unit.” Such messages confirm that the root cause lies not in external components like sensors or airbags, but within the control unit itself.

In which Chrysler models is 68371752AA installed?

The airbag control unit with part number 68371752AA is specifically designed for various configurations of the Chrysler 300. It is used in the LX and LD series, covering diverse engine options and trim levels, including the 300C, SRT, Touring, and Limited trims.

At Airbag24, we service part number 68371752AA and its compatible replacement, 68316752AB, for the following Chrysler models:

Chrysler 300 LX (2004–2010)

Chrysler 300 SRT LX and Chrysler 300 SRT LD

Chrysler 300C LX and Chrysler 300C LD

Chrysler 300 Touring LX

Chrysler 300 Limited LX and Chrysler 300 Limited LD

How is 68371752AA professionally repaired?

Professional repair of 68371752AA involves a detailed analysis to pinpoint the fault, elimination of electronic defects at the component level, and clearing of stored crash data. This is followed by a comprehensive functional test to restore factory conditions and ensure full safety. Each repair comes with 2 years' statutory liability for defects.

After submission to Airbag24, the repair process begins with a thorough diagnosis of the removed control unit. Technicians read out the internal fault logs and inspect the hardware for visible damage such as corrosion or defective solder joints.

The core of the repair involves addressing the identified cause of failure. This may include clearing crash data that prevents functionality after an accident, or replacing faulty electronic components on the circuit board.

Following restoration, the control unit is tested on a specialized test bench. Here, communication is simulated, and the correct operation of all outputs (e.g., for airbags and seatbelt pretensioners) is verified. Only after a successful final test is the unit approved for return shipment.

What are the advantages of repair over replacement?

Repairing the original airbag control unit 68371752AA is a cost-effective and reliable alternative to an expensive new part or an uncertain used component. It offers significant savings, restores full functionality, and is backed by 2 years’ statutory liability for defects.

A key advantage is cost: repair is typically far cheaper than purchasing a new control unit from an authorized dealer, helping you stay within budget without compromising safety.

Unlike used control units from salvage platforms—often with an unclear history and potentially containing crash data—the repaired original part undergoes comprehensive inspection. The 2 years' statutory liability for defects provides added peace of mind.

Since the vehicle’s original control unit is repaired, its factory configuration remains intact. The repair restores the original settings, ensuring seamless communication with other vehicle systems upon reinstallation, which simplifies the workshop process.