Airbag control unit with part number DPI 7088104

What is the function of the airbag control unit DPI 7088104?

The airbag control unit with part number DPI 7088104 is a safety-critical control module manufactured by Siemens (manufacturer code 5WK4116) for the Daewoo Nexia N100 and N150. Its primary task is to process signals from crash sensors, activate the airbags and seatbelt pretensioners in the event of an accident, and communicate with the vehicle’s network.

As the central brain of the passive safety system, this component processes signals from acceleration and impact sensors in real time. Upon impact, it determines within milliseconds which restraint systems need to be deployed to provide optimal protection for occupants.

It is technically identical to OEM part numbers 96187128 and KT95. Proper functionality is essential for vehicle safety, as a failure can disable the entire airbag system.

What defects occur in DPI 7088104?

A defect in the DPI 7088104 control unit is most commonly caused by stored crash data after an airbag deployment, which locks the device. Other causes include internal hardware failures in components such as the memory chip, water damage, short circuits in the vehicle’s electrical system, or an unstable power supply.

After a collision, the unit stores so‑called crash data in its internal memory (EEPROM/Flash), which blocks further functions. This data cannot be erased using standard diagnostic tools.

Internal hardware faults are another frequent cause. Components such as the processor, capacitors, or the memory chip itself may fail due to aging or electrical disturbances. External factors like moisture ingress (water damage) or voltage issues in the vehicle often result in irreparable board-level damage.

Specific fault codes indicating a control unit defect include:

B1000: Control unit communication error, often caused by an internal processing fault or a damaged data line.

B1005: Internal memory error, indicating damage to the EEPROM or Flash memory.

B1010: Diagnostic sensor error, suggesting a malfunction of the internal acceleration sensor.

B1020: Insufficient power supply, either due to problems in the vehicle’s electrical system or a defect in the unit’s internal power circuitry.

B1100: A generic code for unspecified hardware damage to the control unit.

How do you recognize a defect in the DPI 7088104 control unit?

The most obvious sign of a defect in the DPI 7088104 control unit is the airbag warning light that remains illuminated on the instrument cluster. Often, the control unit can no longer be accessed by a diagnostic tool, or persistent fault codes appear that cannot be cleared.

The airbag warning light, which fails to turn off after starting the vehicle, directly alerts the driver to a malfunction, potentially preventing the airbags from deploying in an accident.

Another clear symptom is the lack of communication. When a workshop attempts to read the fault memory via the OBD interface, the diagnostic tool receives no response from the airbag control unit, indicating a serious internal fault.

In cases where communication is still possible, fault codes pointing to internal defects or stored crash data cannot be reset using standard workshop tools. The system remains stuck in an error state.

In which vehicles is the DPI 7088104 control unit installed?

The Siemens airbag control unit with part number DPI 7088104 (manufacturer code 5WK4116) was specifically developed for Daewoo vehicles. It is primarily used in the Nexia series, particularly in the N100 and N150 models.

At Airbag24, we repair the DPI 7088104 control unit for the following models:

Daewoo Nexia N100 (1994–1997) Daewoo Nexia N150

For flawless operation, ensuring compatibility is crucial. This control unit is not interchangeable with modules from manufacturers such as Bosch or Continental. Using an incorrect part number could lead to malfunctions throughout the entire safety system.

How does Airbag24 repair the DPI 7088104?

After you send us your removed control unit, our technicians perform a precise diagnosis to identify the root cause of the issue. Depending on the defect, repairs may involve professionally resetting the crash data or replacing faulty electronic components, followed by a comprehensive final test.

The repair process at Airbag24 consists of the following steps:

1. Initial Diagnosis: First, the control unit is read out to analyze the fault memory. A visual inspection of connectors, wiring, and the circuit board provides initial clues about potential physical damage.

2. Fault Localization: Using specialized testing equipment, defective components such as memory chips (EEPROM), processors, or capacitors are precisely identified.

3. Repair: For stored crash data, this information is securely erased using special software while preserving the vehicle identification number. In cases of hardware defects, damaged components are expertly replaced with genuine parts. Damage caused by short circuits or moisture is also repaired at this stage.

4. Final Test and Calibration: After repair, a comprehensive functional test is performed. The fault memory is cleared, and proper coding is verified to ensure plug-and-play functionality upon reinstallation. Each repair comes with 2 years' statutory liability for defects.