What is a Saturn Aura Hybrid airbag control unit?
The Saturn Aura Hybrid airbag control unit is the central safety unit that activates all occupant restraint systems in the event of an accident. It precisely monitors crash sensors, stores relevant crash data, and ensures the proper functioning of all airbag modules in the vehicle. Its primary function is to ensure occupant safety in an emergency.
It functions as a Sensing Diagnostic Module (SDM) and is responsible for monitoring the entire safety restraint system, including all airbags and seatbelt pretensioners. The unit is typically located under the center console and is permanently connected to the vehicle's bus system.
Inside, the control unit contains an EEPROM memory that records all relevant crash data and any error messages. This is essential for diagnosis and subsequent Saturn Aura Hybrid airbag control unit repair.
Why is the Saturn Aura Hybrid airbag control unit defective?
A Saturn Aura Hybrid airbag control unit often fails because it permanently stores crash data after an accident, requiring a reset. Internal electrical faults, such as processor or memory problems, as well as power supply disruptions, can also impair function. Such defects require a professional Saturn Aura Hybrid airbag control unit repair.
After an accident, the module is required to store crash data. This data prevents the module from being used again without a specialized reset, which "breaks" the control unit, even though it may be physically intact.
Common failures also result from internal defects such as EEPROM read/write errors, control logic errors, or problems with the control unit's power supply. Such internal errors cause the airbag warning light to remain permanently illuminated and the system to be reported as unsafe.
A quick diagnosis is crucial to determine if a simple reset or a more extensive Saturn Aura Hybrid airbag control unit repair is required.
Common error codes for Saturn Aura Hybrid airbag control unit repair
During Saturn Aura Hybrid airbag control unit repairs, specific error codes signal internal problems with the module. These include communication errors, memory failures, or processor malfunctions. These B-codes are crucial for a precise diagnosis. They point directly to the core function of the airbag control unit and require specialized diagnostic equipment to read.
- B1000 → Control unit communication error → Problems with data transmission within the airbag system.
- B1001 → Internal memory error in the airbag control unit → Damage or corruption of the EEPROM memory for crash data.
- B1002 → Airbag control unit processor error → Malfunction of the main processing unit of the module responsible for system control.
- B1003 → EEPROM Read/Write Error → Inability of the control unit to correctly save or retrieve data to the internal memory.
- B1004 → Internal error in the airbag control unit → General unspecified internal hardware or software error in the module.
- B1010 → Internal self-test failed → The control unit could not successfully complete its internal functional tests.
- B1025 → Airbag control logic error → Problems in the software or hardware that controls the deployment of airbags and seat belt pretensioners.
- B1242 → Airbag ECU internal fault → Another general internal defect that affects the operation of the control unit.
- B1823 → Control unit voltage supply error → Insufficient or unstable power supply to the airbag control unit.
These trouble codes relate exclusively to the airbag control unit and do not include sensor, belt pretensioner, or seat occupancy codes. They are crucial for the Saturn Aura Hybrid airbag control unit repair.
Reading and clearing these B-codes requires special SRS diagnostic tools, as standard OBD2 engine scanners aren't suitable for this purpose. These errors should be cleared after resetting the module.
What part numbers are available for the Saturn Aura Hybrid airbag control unit repair?
Several precisely validated OEM part numbers are relevant for a Saturn Aura Hybrid airbag control unit repair. Although specific hybrid numbers are rarely listed, GM OEM numbers such as 15835185 and AU5WY79410 serve as an important starting point. Bosch supplier numbers such as 5WY77100-95160 are also suitable for the 2008-2009 Saturn Aura.
The main OEM part number for the Saturn Aura airbag control module is 15835185 from General Motors. An alternative, but equally valid, GM part number is AU5WY79410 , which often serves as a replacement or cross-reference number.
In addition, the Bosch OEM number 5WY77100-95160 is often associated with this control unit, often listed under the GM number 25785006. Bosch is a well-known OEM supplier for airbag systems.
These part numbers, although primarily validated for the non-hybrid Saturn Aura model (2008-2009), provide a reliable starting point for Saturn Aura Hybrid airbag control unit repair. In many cases, the airbag control units are technically identical, with possible software adaptations for hybrid models.
If you are unsure or need exact VIN programming after the repair, we recommend contacting an authorized GM dealer or a specialized repair service.