What is a Porsche 911 Speedster 991 airbag control unit?
The Porsche 911 Speedster 991 airbag control unit is the central safety unit that activates all occupant restraint systems in the event of an accident. It monitors sensors, stores crash data, and ensures the proper functioning of all airbag modules in the vehicle, which is essential for safety.
This sophisticated electronic component processes signals from acceleration and crash sensors. Based on complex algorithms, it makes the decision to deploy the airbags in milliseconds.
Why is the Porsche 911 Speedster 991 airbag control unit defective?
A Porsche 911 Speedster 991 airbag control unit is often defective because it stores crash data after an accident, requiring reprogramming, or it becomes inoperable due to overvoltage damage or internal component failure. These defects significantly impair the safety systems.
Because the control unit stores important crash data after deployment, it usually needs to be replaced or reprogrammed after an accident. In this case, a **Porsche 911 Speedster 991 airbag control unit repair** is necessary to restore full functionality.
Aging, moisture, or manufacturing defects can also cause internal component failure. This leads to a system malfunction, which should be detected early through **diagnosis**.
Common error codes for Porsche 911 Speedster 991 airbag control unit repair
During the Porsche 911 Speedster 991 airbag control unit repair, specific error codes are read out, indicating internal control unit problems or sensor malfunctions. These codes are crucial for a precise diagnosis and correcting typical failures in the vehicle's airbag system.
- C12184 → Airbag control unit functional restriction (FCT) → Signal error or internal **defect** in the airbag ECU.
- 0404 → Thorax airbag driver side - resistance too high → The control unit registers an unusually high resistance, which may indicate a **broken** airbag or wiring harness.
- 2004 → Driver's seat belt buckle - open circuit → The control unit detects an open circuit in the seat belt buckle, which impairs safety and requires **repair**.
What part numbers are available for the Porsche 911 Speedster 991 airbag control unit repair?
For Porsche 911 Speedster 991 airbag control unit repairs, the original OEM part numbers from Porsche itself are primarily relevant. These are precisely tailored to the model series and ensure full compatibility and the highest safety standards during replacement or repair.
The validated OEM part numbers for the airbag control unit of the Porsche 911 Speedster (model series 991) include:
- 991.618.201.10
- 991.618.201.04
- 991.618.201.08
- 991.618.201.03
- 991.618.201.02
These numbers have been confirmed by trusted sources such as airbag24.de and design911.com. Alternative spare part numbers or supplier numbers are not verified as 100% compatible for these safety-critical components. **Repair** or replacement should always be performed with exactly matching OEM parts.