Airbag control unit with part number 04759012AI

What is the function of the airbag control unit 04759012AI?

The airbag control unit with part number 04759012AI is the central control unit (SRS ECU) for the restraint system in specific Chrysler and Dodge models. It continuously analyzes data from the connected crash sensors and is responsible for precisely and rapidly deploying the airbags and seatbelt pretensioners in the event of a collision.

As the brain of the passive safety system, this module determines which restraint devices must be activated during an impact to provide optimal protection for occupants. Its software and hardware are specifically tailored to the vehicle architecture of models such as the Chrysler Intrepid or LHS, ensuring flawless operation.

Why does the airbag control unit 04759012AI fail?

The most common cause of failure for the 04759012AI control unit is the storage of crash data after an accident, which results in an irreversible lockout of the device. Other causes include internal electronic component failures leading to communication loss, as well as external factors such as moisture or overvoltage in the vehicle’s electrical system.

After an airbag deployment, a permanent entry is stored in the control unit’s memory, blocking the system for safety reasons. This is an intentional state designed to prevent further use without professional inspection and reset.

Electronic components on the circuit board may also fail due to age or thermal stress, often triggering internal fault codes such as B1111 (control unit malfunction) or model-specific codes like B1035 or B1000, indicating hardware defects.

How do you recognize a defect in the 04759012AI control unit?

A defective 04759012AI airbag control unit almost always manifests as a permanently illuminated airbag warning light (SRS lamp) in the instrument cluster. Often, it is also no longer possible to access the control unit via a diagnostic tool to read out error codes. The fault memory frequently contains internal errors such as B1111.

The most obvious symptom is the persistently lit SRS warning light, which does not extinguish even after restarting the engine. This indicates a serious fault in the restraint system that requires immediate inspection.

Another clear sign is complete loss of communication: the workshop cannot establish a connection between the diagnostic tool and the airbag module, making it impossible to troubleshoot other components such as sensors or wiring.

In some cases, specific error messages appear—such as “Airbag error on startup” or issues related to side‑impact sensors or the CAN bus—which directly point to an internal defect in the control unit.

In which vehicles is the 04759012AI control unit installed?

The 04759012AI airbag control unit is specifically designed for certain North American models from the Chrysler Group. It is primarily used in the second-generation Chrysler LHS, as well as in the first- and second-generation Chrysler and Dodge Intrepid models based on the LH platform. At Airbag24, we repair this control unit for the aforementioned models.

Specifically, this part number is refurbished for the following vehicles:

Chrysler: LHS 2nd generation (1998–2001), Intrepid 1st generation (1992–1997), Intrepid 2nd generation (1997–2004), Intrepid LH

Dodge: Intrepid 1st generation (1992–1997), Intrepid 2nd generation (1997–2004), Intrepid LH

For removal, the control unit is typically located in these models in the center console, directly beneath the handbrake lever.

Is repairing the 04759012AI control unit worthwhile?

Repairing the 04759012AI control unit is an economically and technically sensible alternative to expensive replacement. You can save up to 90% compared to purchasing a new unit, which often costs several hundred euros. Additionally, you receive your original part restored to factory condition, backed by 2 years’ statutory liability for defects.

A new unit can cost up to €750, depending on the manufacturer and availability. Therefore, repair represents the most cost-effective solution for restoring full functionality to the airbag system.

Since your original unit is refurbished, a time-consuming re‑coding of the vehicle is not necessary. After installation and clearing the fault memory, the repaired control unit can be used immediately within the overall system (plug-and-play).

How does the repair process work at Airbag24?

At Airbag24, the 04759012AI control unit is professionally refurbished after removal and shipment. The process includes expert erasure of stored crash data, correction of internal faults, and replacement of defective electronic components. Finally, the unit is thoroughly tested to ensure full functionality.

Once the control unit has been received at our facility, our technicians perform a thorough analysis to identify the root cause of the fault. The focus is on removing the crash-data lock and repairing any hardware defects on the circuit board.

The repair is carried out at the component level. Defective components are replaced, and the device is fully restored to its factory condition. Final tests ensure that the module communicates flawlessly and performs all functions correctly. We provide 2 years' statutory liability for defects on every repair.