Airbag control unit with part number 68316752AB

What is the function of the airbag control unit 68316752AB?

The airbag control unit with part number 68316752AB is the central control module for the entire occupant safety system (SRS) in Chrysler 300 models. As an original Mopar replacement part, it continuously monitors data from crash sensors, controls airbag deployment, and activates seatbelt pretensioners in the event of a collision.

This module serves as the brain of the safety system. It constantly receives and analyzes data—including signals from the engine control unit—to accurately detect crash events and initiate necessary protective measures within milliseconds.

Its core functions include activating airbags, locking seatbelts, and deploying seatbelt pretensioners. It is also compatible with related part numbers such as 05081042AD or 04602406AC.

Why does the control unit 68316752AB fail? Common defects

The most frequent cause of failure for the control unit 68316752AB is the storage of crash data after a collision. These so-called “hard codes” lock the module and cannot be cleared using standard diagnostic tools. Other causes include internal component failures, often resulting from heat exposure.

Following a collision—even a minor one—the control unit writes vehicle-specific crash data into its internal memory. This process is a safety feature that permanently locks the device, indicated by the airbag warning light remaining steadily illuminated.

In addition to stored crash data, hardware-related defects may occur, such as failures of individual electronic components on the circuit board or issues caused by thermal stress over time.

It is crucial to have a professional workshop diagnosis performed before removing the control unit. The cause of the illuminated SRS warning light could also lie in wiring, faulty crash sensors, or seat-mounted airbags—not necessarily in the control unit itself.

How can you recognize a defect in the 68316752AB?

A defective 68316752AB airbag control unit primarily manifests as a persistently illuminated airbag warning light (SRS light) on the instrument cluster. Often, communication between the workshop’s diagnostic tool and the control unit is also lost, preventing the reading of fault codes.

The clearest indication is the SRS indicator light that remains on after starting the vehicle. This signals a critical fault in the restraint system that requires immediate inspection.

Another sign is complete loss of communication: when a workshop attempts to read the fault memory via the OBD interface, no response is received from the airbag control unit.

In some cases, specific functional malfunctions may also occur, such as issues with seatbelt pretensioners directly controlled by the unit.

In which vehicles is the control unit 68316752AB installed?

The part number 68316752AB is a specific OEM Mopar control unit mainly used across various trims and generations of the Chrysler 300, covering a long production span from LX models to newer LD variants.

At Airbag24, we repair the airbag control unit with part number 68316752AB for the following Chrysler models:

Chrysler 300 LX (2004–2010)

Chrysler 300 LD (2011–2023)

Chrysler 300 SRT LX

Chrysler 300C LX

Chrysler 300 Touring LD

Chrysler 300 Limited LX

Chrysler 300 Limited LD

How does the repair of the 68316752AB proceed at Airbag24?

The repair focuses on professionally resolving the root cause of the issue, particularly clearing the stored crash data. After removal and shipment, the control unit is analyzed at Airbag24, the “hard codes” are eliminated, and the module is restored to factory condition.

Upon receiving the removed control unit, an initial inspection is conducted. Removal should always be performed with the battery disconnected, and the module is typically located beneath the center console.

The core of the repair involves reprogramming the memory to completely erase the crash data (hard codes) locked after a collision. If additional hardware defects are detected during diagnostics, these will also be expertly addressed.

The goal is to restore the unit to its original factory condition. A key advantage of this repair is that no further coding or programming by an authorized service center is required after reinstallation.

All repair work performed on the control unit comes with a standard 2 years' statutory liability for defects.