What is a Porsche 911 GT3 Touring 991 airbag control unit?
The Porsche 911 GT3 Touring 991 airbag control unit is the central safety unit that activates all occupant restraint systems, such as airbags and seatbelt pretensioners, in the event of an accident. It continuously monitors sensors, stores relevant crash data, and ensures the proper functioning of all airbag modules for maximum occupant safety.
This safety-relevant electronic module is specifically designed for the 991 series, model years 2014 to 2018, of the Porsche 911 GT3 and GT3 Touring. It forms the heart of the passive safety system.
Its primary function is to react instantly in the event of a collision, deploying the restraint systems within milliseconds. At the same time, it records detailed accident data for later diagnosis.
Why is the Porsche 911 GT3 Touring 991 airbag control unit defective?
A Porsche 911 GT3 Touring 991 airbag control unit often fails because it stores crash data after an accident, triggering a permanent fault, or due to internal electronic failures such as short circuits and component aging. Communication problems with other systems can also lead to failure.
The most common cause of failure or malfunction is the retention of crash data after an accident, even in minor collisions. This data "locks" the control unit and requires professional repair or replacement.
Internal components can be damaged by aging or electrical surges, resulting in sporadic or persistent error messages. This is often indicated by an illuminated airbag warning light in the vehicle.
Even if the airbag control unit is broken, this can indicate a lack of communication with sensors or other control units, causing the system to enter a fault state and limit functionality.
Common error codes for Porsche 911 GT3 Touring 991 airbag control unit repair
During a Porsche 911 GT3 Touring 991 airbag control unit repair, specific error codes may occur that indicate internal problems or communication errors within the control unit. These codes are crucial for a precise diagnosis and subsequent repair of the system.
- C12184 → Airbag SG FCT restriction due to implausible signal → Cause: Internal problem of the control unit or incompatible/faulty signal input.
- B1000 → Control unit communication error → Cause: Interruption of the data connection to the airbag control unit or internal defect in the communication unit.
- 0404 → Thorax airbag driver side – resistance too high → Cause: The airbag control unit registers too high a resistance in the circuit of the thorax airbag on the driver side, which indicates a defect in the airbag module or the wiring and is reported by the control unit.
What part numbers are available for the Porsche 911 GT3 Touring 991 airbag control unit repair?
For the Porsche 911 GT3 Touring 991 airbag control unit repair, the OEM part numbers 99161820102, 99161820103, 99161820104, and 99161820108 are verified original spare parts. These identify the specific control units for your vehicle model.
These exact part numbers have been verified through professional spare parts databases such as Design911 and cover the airbag control units for Porsche 991 models, including the GT3. They are crucial for correct selection and repair.
The relevant part numbers are 99161820102, 99161820103, 99161820104 and 99161820108. All are listed as genuine Porsche parts at specialist dealers.
These numbers guarantee compatibility with the airbag control unit of your Porsche 911 GT3 Touring (991) and ensure full functionality of the safety system. A qualified workshop can professionally perform the diagnosis and replacement.