Airbag control unit with part number 13313750

What is the function of Airbag Control Unit 13313750?

The airbag control unit with part number 13313750 is the central control module for the occupant safety system (SRS) in the Daewoo Lacetti J300. It is responsible for evaluating signals from crash sensors and, in the event of a collision, precisely deploying the airbags and activating seatbelt pretensioners.

As an SRS module, it continuously monitors all components of the restraint system, from the sensors to the airbag igniters. After a collision, the unit stores relevant crash data to enable post‑crash analysis.

This functionality ensures reliable operation in emergencies but can also lead to specific fault symptoms if the stored data is not properly reset after an accident.

Why does Control Unit 13313750 fail? Typical defects.

The most common cause of failure for Control Unit 13313750 is the retention of crash data following an airbag deployment. This data permanently locks the module, preventing further operation. Similarly, internal faults in the memory chip can result in a defect often indicated by error code B1111.

After a collision involving airbag deployment, a so‑called “crash lock” is set in the control unit’s memory. This condition is permanent and cannot be cleared by standard workshop diagnostic tools. The system then reports a persistent fault and remains disabled.

Another potential defect arises from internal electronic malfunctions or memory damage, even without a prior collision. Such issues likewise trigger activation of the SRS warning light and prompt deactivation of the system for safety reasons.

How do you recognize a defect in Airbag Control Unit 13313750?

A defect in Control Unit 13313750 almost always manifests as a persistently illuminated airbag or SRS warning light on the instrument cluster. During diagnosis, error code B1111 (control unit defective) is frequently read; this code cannot be cleared and indicates an internal, locked‑up fault.

The illumination of the warning light is the primary signal to the driver that the entire airbag system is non‑functional. This poses a significant safety risk and inevitably results in failing the main vehicle inspection (TÜV).

In the workshop, the suspicion is confirmed when the diagnostic tool displays error code B1111 or a similar internal module fault. Attempts to clear this error typically fail, as the defect is hardware‑level and embedded in the unit’s memory.

In which vehicles is Control Unit 13313750 installed?

The airbag control unit with part number 13313750 is specifically used in Daewoo vehicles. At Airbag24, this module is best known for its application in the Daewoo Lacetti of the J300 series.

Specifically, this control unit is installed in the following model, for which Airbag24 offers professional repair:

Daewoo Lacetti J300 (model years 2004–2010)

How is Control Unit 13313750 professionally repaired?

Professional repair at Airbag24 focuses on electronic restoration of the original control unit. Stored crash data is completely erased at the chip level, and the internal memory is restored to factory settings. This fully reinstates functionality without requiring a new part.

Following careful removal from the vehicle—typically from the center console beneath the handbrake lever or the glove compartment—the control unit is sent to Airbag24. Before removal, the vehicle battery must be disconnected for at least 10 minutes.

Technicians at Airbag24 analyze the unit and use specialized programming and diagnostic tools to reset the internal memory. After successful repair, the module undergoes a functional test to ensure proper operation.

Upon reinstallation in the vehicle, only the fault memory needs to be cleared using a diagnostic tool. The airbag system is then immediately ready for use again. Airbag24 provides 2 years' statutory liability for defects on every repair.

What are the advantages of repairing 13313750?

The key benefit of repair lies in substantial cost savings—up to 90% compared to purchasing a new, expensive part that often costs several hundred euros. Since the original control unit is retained, there is no need for time‑consuming recoding or reprogramming of the vehicle.

While a new part can cost between €400 and over €750 according to the manufacturer, repair represents a far more economical solution. You receive a fully functional component at a fraction of the price of a new one.

Another advantage is the preservation of the vehicle’s original configuration. Since the hardware and the control unit’s core software remain unchanged, it becomes immediately compatible and ready for use after installation.

Moreover, repair is a sustainable alternative that conserves resources and helps avoid electronic waste, backed by 2 years' statutory liability for defects.