What is a Porsche 911 Turbo S 991 airbag control unit?
The Porsche 911 Turbo S 991 airbag control unit is the central safety unit that activates all occupant restraint systems in the event of an accident. It continuously monitors sensors, stores important crash data, and ensures the proper functioning of all airbag modules and seatbelt pretensioners in the vehicle to provide maximum occupant protection.
This specific control unit was developed for the seventh generation of the Porsche 911 (991 series), produced from approximately 2011 to 2019. It is essential for controlling the front and side airbags, including the Porsche Side Impact Protection System (POSIP).
It also integrates the activation of belt tensioners and belt force limiters and ensures communication with ISOFIX child seat attachments.
Why is the Porsche 911 Turbo S 991 airbag control unit defective?
A Porsche 911 Turbo S 991 airbag control unit often fails because it stores crash data after an accident that cannot be erased without specialized repair, or because of internal electronic faults such as water or overvoltage damage. These problems then lead to a permanent error message and make a professional Porsche 911 Turbo S 991 airbag control unit repair unavoidable.
The age of the component or extreme temperature fluctuations can also lead to failure of the internal components. If a defect occurs, the airbag warning light in the instrument cluster will display a warning, necessitating a diagnostic visit to the workshop.
A typical cause of failure is also faulty communication with other vehicle systems, as the control unit is centrally integrated into the vehicle network. Such problems require specialist knowledge for correct diagnosis and repair.
Common error codes for Porsche 911 Turbo S 991 airbag control unit repair
The most common error codes requiring a Porsche 911 Turbo S 991 airbag control unit repair indicate problems with the trigger unit, internal communication, or implausible signals detected directly by the control unit. These error codes are stored in the ECU memory and can only be read with special diagnostic tools.
- C11005: Indicates a faulty airbag deployment unit. This problem results in a permanently active airbag warning light.
- B1000: Indicates a general communication error within the airbag ECU. This code indicates internal malfunctions.
- C12184: Describes a functional limitation of the control unit due to an implausible signal. This can be caused by internal ECU errors.
- 0404: Indicates excessive resistance on the driver's side thorax airbag. The code is detected and stored by the control unit.
- 2004: Indicates an open or open circuit in the driver's seat belt buckle. This safety fault is also registered by the control unit.
For accurate error code reading and deletion after a successful Porsche 911 Turbo S 991 airbag control unit repair, manufacturer-specific diagnostic devices such as the Porsche PIWIS Tester or specialized scan tools are required. Standard OBD-II devices are not sufficient for this.
What part numbers are available for the Porsche 911 Turbo S 991 airbag control unit repair?
For the Porsche 911 Turbo S 991 airbag control unit repair, several exact OEM part numbers are relevant, as they are either original parts or variants within the 991 series. These numbers are crucial for correct identification and compatibility of the replacement part.
The primary and most frequently cited part number for the airbag control unit of the Porsche 911 Turbo S 991 is 991.618.201.10. This has been specifically confirmed for the repair of airbag control units in this series.
Additionally, other OEM numbers from the 991.618.201.xx series are listed for the 991 Turbo. These include 991.618.201.04, 991.618.201.08, 991.618.201.03, and 991.618.201.02, which function as closely related original parts or variants of the same control unit.
These part numbers are 100% verified through validation via multiple trusted sources such as airbag24.de and design911.com. They are specifically designed for the 991 series of the Porsche 911 Turbo S and are essential for a professional Porsche 911 Turbo S 991 airbag control unit repair.