Airbag control unit with part number 95400-3B000-CA0

What is the function of the airbag control unit 95400-3B000-CA0?

The airbag control unit 95400-3B000-CA0 is the central control module for the occupant safety system (SRS) in the SsangYong Chairman CW700. It continuously analyzes data from acceleration and crash sensors to precisely deploy airbags and seatbelt pretensioners at the right moment in the event of a collision. Its proper operation is critical for safety.

As the “brain” of the restraint system, this module communicates with all relevant components, including front and side airbags, seatbelt pretensioners, seat occupancy detection, and their associated sensors. It constantly monitors system integrity and reports faults via the airbag warning light on the instrument panel.

The correct functioning of the control unit ensures that, in an emergency, all safety devices operate as intended by the manufacturer to provide optimal protection for occupants. A repair restores this functionality.

Why does the control unit 95400-3B000-CA0 fail?

The most common cause of failure is the storage of crash data after a collision. In such cases, the control unit locks itself and must be reset electronically. Other defects arise from internal component failures on the circuit board due to aging or thermal stress. Moisture damage can also destroy the electronics.

Following an airbag deployment, a permanent entry known as “crash data stored” is recorded in the control unit’s internal memory. This entry prevents further system operation and can only be cleared through specialized electronic repair, offering a cost-effective alternative to replacing the part entirely.

Electronic components such as processors, memory chips (EEPROM/Flash), or voltage regulators may fail over time, leading to internal errors that are logged in the fault memory and trigger the airbag warning light. Such defects can be specifically repaired at the circuit board level.

This control unit is also known under alternative part numbers 95400-3B000, 5WK44001, and 954003B000. The fault patterns and repair methods are identical across these variants.

How do you recognize a defect in the 95400-3B000-CA0?

The clearest symptom is a persistently illuminated airbag warning light (SRS lamp) on the dashboard. Often, the control unit can no longer be accessed by diagnostic equipment (no communication). Typical entries in the fault memory, such as “crash data stored” or “control unit internal error,” directly indicate a malfunction.

If the red SRS warning light fails to extinguish after starting the engine, the system signals a critical fault. Continuing to drive is not recommended, as airbag functionality is no longer guaranteed. Immediate diagnosis at a qualified workshop is essential.

Another clear sign is when the workshop cannot establish communication with the airbag control unit via the OBD port. This points to a severe internal electronic fault, often affecting the power supply or the main processor.

Specific error codes like “control unit defective,” “component defective,” or detailed indications of persistent errors in the ignition circuits of airbags or seatbelt pretensioners are also clear indicators that a control unit inspection and repair are necessary.

In which vehicles is the 95400-3B000-CA0 installed?

The airbag control unit with part number 95400-3B000-CA0 is specific to SsangYong models. At Airbag24, we professionally repair this control unit for the following vehicle, restoring full functionality of the safety system at a competitive price.

Specifically, this component is used in the following model:

SsangYong Chairman CW700 (model years approximately 2013–2017)

How is the 95400-3B000-CA0 professionally repaired?

Repair at Airbag24 follows a standardized process. After removal by a qualified workshop and submission, the control unit undergoes an initial inspection. Crash data is then erased, or defective components on the circuit board are replaced. A final test on a bench ensures full functionality before re‑shipping.

First, the control unit must be expertly removed from the vehicle. This should only be performed by trained personnel, as work on the airbag system involves safety‑critical procedures. The removed unit is then sent to Airbag24 along with a detailed description of the fault.

Our technicians conduct a thorough analysis of the electronics. Depending on the nature of the fault, stored crash data is cleared while preserving the vehicle‑specific coding; defective ICs, voltage regulators, or memory modules are replaced, and cold solder joints are reworked.

After repair, the control unit is tested on a specially designed test bench. Here, all inputs and outputs as well as communication are simulated to ensure it functions like new again. We provide a 12-month warranty on every repair.

How does the control unit get to Airbag24?

We offer flexible and secure options for shipping your removed control unit to us. You can either send the package yourself free of charge or use our convenient UPS pickup service from your preferred location. After the repair, you can choose the return shipping method that best suits you from our range of options.

For the outbound shipment, you have two choices: pack the control unit securely and send it to us yourself, or arrange a UPS pickup, where the courier will collect the device directly from your home or workshop.

For the return shipment, we provide several options. Free standard UPS shipping is our default choice. For faster delivery, UPS Express shipping is available. Both options can also be arranged with cash-on-delivery upon request. Of course, personal collection at our premises is also possible.