What is a Toyota Prius XW60 airbag control unit?
The Toyota Prius XW60 airbag control unit is the brain of the Supplemental Restraint System (SRS), which precisely activates the airbags and seatbelt pretensioners in the event of a collision. It continuously monitors acceleration sensors, stores relevant crash data, and ensures the proper functioning of all safety-relevant components for the occupants.
It processes sensor signals from integrated MEMS-based accelerometers that accurately measure impact directions and intensities. This technology enables lightning-fast decisions on necessary safety measures.
The control unit communicates with other important systems such as ABS and stability control via the vehicle's CAN bus, ensuring seamless coordination of safety functions.
The module is coded to the specific vehicle's VIN, requiring individual programming to correctly manage the security status. This is crucial to avoid malfunctions and warnings.
Why is the Toyota Prius XW60 airbag control unit defective?
The Toyota Prius XW60 airbag control unit may be defective because it is storing crash data after an accident, internal electronic errors occur, or the power supply is compromised. This often results in a permanently illuminated airbag warning light, requiring immediate Toyota Prius XW60 airbag control unit repair, as otherwise the safety systems remain inactive.
A common reason is the storage of crash data after a collision, even in minor impact events. In such cases, the control unit must be reset or replaced, otherwise it will remain blocked.
Internal component errors such as defective memory chips (EEPROM) or firmware errors can also impair functionality. These malfunctions result in specific diagnostic codes and prevent proper system monitoring.
Power supply issues or communication disruptions with the vehicle's electrical system can paralyze the control unit. A missing or unstable power supply makes a Toyota Prius XW60 airbag control unit repair unavoidable.
Common error codes for Toyota Prius XW60 airbag control unit repair
During Toyota Prius XW60 airbag control unit repairs, specific B-type error codes may occur, indicating internal defects or communication problems with the airbag ECU. These codes help specialized repairers identify the exact cause of the malfunction and initiate a targeted repair to restore the safety system's full functionality.
- B1000: Control Unit Communication Error – Indicates a faulty data connection of the airbag ECU.
- B1100: Airbag ECU Internal Memory Error – Indicates a defect in the internal data memory of the airbag ECU.
- B1200: Control Unit Power Supply Error – Indicates an insufficient or interrupted power supply to the airbag ECU.
- B1300: Airbag ECU EEPROM Error – Indicates a problem with the non-volatile memory (EEPROM) of the airbag ECU.
- B1400: Airbag ECU General Fault – A general internal functional fault has occurred in the airbag ECU.
- B1500: Faulty Firmware in Control Unit – Indicates corruption of the internal software (firmware) of the airbag ECU.
- B1600: Diagnostic Interface Error – The airbag ECU cannot communicate correctly via the diagnostic interface.
- B1700: Internal Temperature Monitoring: Overheat – The airbag ECU has detected a critical internal temperature.
What part numbers are available for the Toyota Prius XW60 airbag control unit repair?
For Toyota Prius XW60 airbag control unit repairs, the OEM part numbers 89170-47860 and 8917047860 are primarily relevant, as they are verified as the main airbag control unit. Part number 89170-47030 is for older models, which is important to note when checking compatibility with the Prius XW60.
- 89170-47860: Genuine OEM airbag control unit from Toyota, verified for the Prius XW60.
- 8917047860: Identical to 89170-47860, alternative spelling in Toyota OE format.
- 89170-47030: Original OEM airbag control unit, primarily for older Prius models; compatibility with XW60 must be checked.