Airbag control unit with part number 5757A026

What is the function of the airbag control unit 5757A026?

The airbag control unit with part number 5757A026 is the central control module of the occupant safety system (SRS) in the Mitsubishi Pajero V90. Its primary task is to process sensor data to precisely deploy the airbags and seatbelt pretensioners at the right moment during a collision, which is crucial for occupant safety.

This component, known as the SRS Control Unit, continuously monitors all connected sensors—such as acceleration and pressure sensors—as well as the airbag ignition circuits. When critical values indicating a collision are received from the sensors, the control unit initiates activation of the restraint systems.

After an activation event, the unit stores so‑called crash data. This storage serves as a safety feature that prevents the system from operating uncontrollably after an accident. At the same time, this entry locks the control unit’s functionality until it is professionally reset or repaired.

Why does the control unit 5757A026 fail?

The most common causes of failure for the 5757A026 control unit are physical in nature, ranging from damaged wiring to internal defects following a crash. Often, the unit remains technically intact but becomes locked due to stored crash data. Broken wires or loose connectors can also lead to malfunctions.

A primary cause of failure is the retention of crash data after a collision. In such cases, the control unit self‑locks to prevent further damage. This lock can only be released through specialized repair.

Additional failures arise from the control unit’s peripherals. Faulty wiring, corroded or loose connectors can disrupt communication and trigger error codes. Less frequently, internal electronic components on the circuit board fail without any external influence.

Diagnostics are performed in the workshop using an OBD scanner. By reading the fault memory, the root cause can be precisely identified—whether the issue lies directly in the control unit, the sensors, or the wiring.

How do you recognize a defect in the 5757A026 control unit?

A defect in the 5757A026 airbag control unit is unmistakably indicated by a permanently illuminated or flashing SRS warning light on the instrument cluster. This signal shows that the entire airbag system is disabled and will not deploy in the event of a crash, posing a significant safety risk.

The illumination of the warning light is the clearest symptom. It alerts the driver to a critical malfunction in the restraint system. This warning should never be ignored, as the protective functions of the airbags and seatbelt pretensioners are no longer guaranteed.

In some cases, communication problems may also occur. A diagnostic tool might fail to establish a connection with the airbag control unit or display general internal error codes, strongly suggesting a defect within the control unit itself.

In which vehicles is the 5757A026 control unit installed?

The airbag control unit with part number 5757A026 was specifically developed for the fourth-generation Mitsubishi Pajero (V90). It is used in both the original models and the facelifted version.

At Airbag24, we repair the 5757A026 control unit for the following specific models:

- Mitsubishi Pajero V90 (2007–2012)

- Mitsubishi Pajero V90 Facelift (2012–2021)

What are the advantages of repair over replacement?

Repairing the original control unit is an economically and technically superior solution. It saves 30–50% compared to purchasing a new unit and is more environmentally friendly, as existing resources are reused. Another benefit is that extensive re‑coding is unnecessary.

The financial difference is substantial. A new control unit can cost up to €800, depending on the manufacturer. Repair is significantly cheaper, as only defective components on the circuit board are replaced or crash data is cleared.

Since the original vehicle‑specific control unit remains intact, no new coding or programming is typically required after repair. The repaired unit can simply be reinstalled and is ready to use immediately (plug-and-play).

How does repair work at Airbag24?

The repair process at Airbag24 is designed for maximum efficiency and safety. After removal and shipment of the control unit, experienced technicians conduct a systematic analysis. Defects are then fixed at the component level, crash data is cleared, and a final quality check is performed.

After the control unit has been removed at your workshop, please send it to Airbag24. Our mechatronics experts will perform an incoming inspection to verify the reported fault and identify any additional potential issues.

The actual repair focuses on addressing the root cause. Stored crash data is securely erased, and defective electronic components such as processors or memory chips are replaced with new, high-quality parts. Finally, the control unit is tested on a test bench to ensure flawless functionality.

Following successful repair and testing, the device will be returned to you. We provide a 12-month warranty on all repairs.

What shipping options are available?

Airbag24 offers various shipping methods for convenient and speedy processing. You can send your defective control unit free of charge or arrange a paid pickup via UPS. For return shipping, you have access to free standard options as well as faster express services, including cash-on-delivery.

For outbound shipping, you can either send the package yourself at no cost or arrange a UPS pickup from a location of your choice.

The return shipment of the repaired control unit is provided free of charge by default via UPS Standard shipping. If you require faster delivery, we also offer UPS Express shipping for an additional fee. Both options are available with cash-on-delivery as well. Of course, you may also choose to pick up your device in person at our facility.