What is a Toyota Vitz RS airbag control unit?
The Toyota Vitz RS airbag control unit is the central safety unit that continuously evaluates data from crash sensors and seat occupancy mats. In the event of an accident, it precisely controls the deployment of all relevant airbags and seatbelt pretensioners within milliseconds, thus ensuring vital protection for all vehicle occupants.
This is the control center of the airbag system, also known as the SRS module or airbag ECU. This module processes signals and initiates the ignition of the pyrotechnic elements when the crash intensity is sufficient.
The precise response time in the millisecond range is crucial for optimal occupant protection. The device is also programmed to a specific vehicle identification number (VIN).
Why is the Toyota Vitz RS airbag control unit defective?
The Toyota Vitz RS airbag control unit is often defective because it stores irreversible crash data after an accident, requiring a professional reset. Internal errors, communication problems, or a loss of the vehicle identification number (VIN) can also lead to a failure that activates the airbag warning light.
After an accident, so-called crash data is often stored in the control unit. These hard codes cause the airbag warning light to remain permanently activated and cannot be simply cleared via OBD-II.
Another frequently reported error is the loss of the vehicle identification number (VIN) in the control unit. This also represents a memory or communication issue at the ECU level that requires a special repair.
Typical internal errors or general malfunctions can also lead to module failure. In such cases, professional diagnosis and repair of the Toyota Vitz RS airbag control unit is essential.
Common error codes for Toyota Vitz RS airbag control unit repair
During Toyota Vitz RS airbag control unit repair, specific error codes may occur that indicate problems with the control unit itself. These include communication problems and internal errors, often caused by stored crash data or VIN issues that activate a warning light.
- B1100 → Communication to the airbag control unit disturbed → Signal loss or interruption between ECU and other modules
- B0118 → Airbag control unit error (general) → Internal defect, memory problem or processing error in the module
- Crash data → Hard codes after accident → Impact data permanently stored after collision that requires a professional reset
- VIN loss → chassis number missing in the control unit → identification problem of the module with the vehicle system, often after battery failure
What part numbers are available for the Toyota Vitz RS airbag control unit repair?
For Toyota Vitz RS airbag control unit repairs, the exact Toyota OEM part number 89170-0D020 is the primary reference. This specific number is verified for the Toyota Vitz/Yaris RS airbag control unit and is essential for correct replacement part procurement or repair.
Part number 89170-0D020 is specifically specified for the airbag control unit in the Toyota Yaris, which is identical to the Toyota Vitz. It is confirmed as a genuine Toyota OEM part number.
After extensive research, no other OEM part numbers from suppliers such as Bosch, Continental, or Siemens could be found for this specific control unit. This underscores the uniqueness of this number for your model.
If your module has this part number, a specialized Toyota Vitz RS airbag control unit repair is possible. Professional services can erase stored crash data and restore functionality.