What is a Porsche 911 Cabriolet 964 airbag control unit?
The airbag control unit for the Porsche 911 Cabriolet (964) is the central control unit of the passive safety system. It continuously monitors the vehicle's sensors, processes critical data in the event of an impact, and precisely deploys the airbags and seatbelt pretensioners to provide maximum protection for the occupants.
This safety-relevant component analyzes the force and direction of the impact in an accident. It then decides which airbag systems need to be deployed to minimize injuries.
The control unit is also responsible for storing crash data. After a triggering event or a serious incident, this data is permanently stored in the internal memory.
Why is the Porsche 911 Cabriolet 964 airbag control unit defective?
The Porsche 911 Cabriolet 964 airbag control unit may be defective because it stores crash data after an accident that needs to be erased, or because internal electronic components fail due to age. A defect may be indicated by a permanently illuminated airbag warning light in the instrument cluster.
Common causes of a defect include stored crash data after the airbag system has been deployed or even minor collisions. This data prevents the system from being restarted until it has been professionally erased.
Electronic malfunctions such as short circuits, low-voltage problems, or internal component failures can also lead to failure. In such cases, a professional Porsche 911 Cabriolet 964 airbag control unit repair is essential.
Common error codes for Porsche 911 Cabriolet 964 airbag control unit repair
When diagnosing a faulty Porsche 911 Cabriolet 964 airbag control unit, specific error codes may occur that indicate internal problems or communication failures. These codes, such as 25, 27, and 112, are stored directly in the airbag ECU's memory and require professional reading and erasure.
- 25 → Passenger seat belt pretensioner error → Logged in the airbag ECU memory.
- 27 → Passenger ignition circuit error → Recorded in the airbag control unit.
- 112 → Unknown error code → Occurs frequently with 964 control units, indicates an internal problem.
These error codes do not necessarily indicate a direct defect in the components mentioned, but rather the detection of a problem by the airbag control unit itself. They are therefore important indicators for the need for a Porsche 911 Cabriolet 964 airbag control unit repair .
After a successful repair or after erasing crash data, the error log must be reset using a suitable diagnostic tool. Otherwise, the airbag warning light will remain active even if the error is corrected.
What part numbers are available for the Porsche 911 Cabriolet 964 airbag control unit repair?
For the repair or replacement of an airbag control unit in a Porsche 911 Cabriolet 964, two exact OEM part numbers are primarily relevant: 944.618.217.02 and 964.618.217.03. These numbers, which often indicate Bosch as the original manufacturer, are verified for the 964 series and ensure full compatibility.
Part number 944.618.217.02 is known to be a genuine part, especially for the Porsche 911 model 964, including the convertible. It has been confirmed multiple times by professional repair services.
Likewise, the number 964.618.217.03 is a confirmed genuine part number for the Porsche 911 964 series airbag control unit. Both part numbers are crucial for a precise Porsche 911 Cabriolet 964 airbag control unit repair .
No other OEM part numbers from Siemens, Continental, or Autoliv have been reliably documented for this specific airbag control unit in the 964 Cabriolet series. Therefore, a thorough diagnosis is always important.