What is a Toyota Yaris Cross airbag control unit?
A Toyota Yaris Cross airbag control unit is the central safety unit in your vehicle that activates all occupant restraint systems in the event of an accident. It continuously monitors sensors, stores relevant crash data, and ensures the proper functioning of all airbag modules and seatbelt pretensioners to maximize occupant safety.
This module, also known as the SRS Control Module, is responsible for the precise evaluation of acceleration and crash data.
Its main task is the timely and safe deployment of airbags and seat belt tensioners in an emergency.
Why is the Toyota Yaris Cross airbag control unit defective?
A Toyota Yaris Cross airbag control unit may be defective because it stores and blocks crash data after an accident, or it may have internal system errors that cause it to malfunction. Common causes include internal circuit faults, communication problems, or a power surge, which may require repair or replacement.
After an impact, the control unit stores accident data, which requires reprogramming or erasing the data for further use.
Even without an accident, the airbag control unit can develop internal errors that cause the airbag warning light to illuminate and require professional diagnosis.
These errors can be caused by aging components, moisture or sporadic failures in the vehicle electronics and make a Toyota Yaris Cross airbag control unit repair necessary.
Common error codes for Toyota Yaris Cross airbag control unit repair
During Toyota Yaris Cross airbag control unit repair, specific error codes may occur that indicate internal control unit malfunctions, communication issues, or ignition circuit failures. These codes, such as B1000 or B1100, signal direct problems with the airbag control unit itself and require a precise diagnosis to resolve the issue.
- B1000 → Control unit defective → Internal error or loss of communication with the airbag ECU.
- B1100 → Airbag deployment unit error → Deployment function malfunction directly related to the control unit.
- B0108 → Passenger airbag ignition circuit error → The control unit detects a problem in the ignition circuit of the passenger airbag.
- B0118 → Error in the driver's side ignition circuit → The control unit registers a malfunction in the driver's airbag ignition circuit.
- B1141 → Control unit error / internal errors in the airbag module → Comprehensive internal defect in the airbag control unit.
What part numbers are available for the Toyota Yaris Cross airbag control unit repair?
For Toyota Yaris Cross airbag control unit repairs, several verified OEM part numbers are relevant, ensuring exact compatibility with your vehicle model. These specific numbers help identify the correct control unit for replacement or repair and include both Toyota and TRW references for original parts.
- 89170-0D020 (Toyota / TRW): A genuine control unit for Toyota Yaris Cross models.
- 89170-0D010 (TRW): Another genuine part number that conforms to TRW specifications.
- 55302K0061E0 (Toyota): An exact OEM part number, specifically for the airbag control unit of the Toyota Yaris Cross.
- 89170-K0060 (Toyota): Also a genuine airbag control unit listed for the Toyota Yaris Cross.
The part numbers mentioned are intended exclusively for the airbag control unit (SRS Control Module) and not for sensors or other components.
Correct part number identification is crucial to ensure compatibility of the replacement part or repair for your Toyota Yaris Cross airbag control unit.