What is a Toyota Prius XW50 airbag control unit?
The Toyota Prius XW50 airbag control unit is the central safety unit that activates all occupant restraint systems in the event of an accident. It precisely monitors sensors, stores relevant crash data, and ensures the proper functioning of all airbag modules in the vehicle for maximum safety.
This module, also known as the SRS control unit, is responsible for detecting collisions and the controlled deployment of the airbags and seat belt pretensioners.
It contains MEMS-based acceleration sensors that reliably measure front and side impact forces.
Why is the Toyota Prius XW50 airbag control unit defective?
The Toyota Prius XW50 airbag control unit often fails because it stores irreversible crash data after an accident, requiring reprogramming or replacement to restore full functionality of the airbag system. Age-related internal electronic faults or moisture can also lead to failure, necessitating a Toyota Prius XW50 airbag control unit repair.
After an impact, the control unit locks and must be reset to be operational again.
Internal component damage due to wear, overvoltage, or water ingress can also cause failure.
A correct diagnosis in a specialist workshop is crucial to determine the exact cause of the defect.
Common error codes for Toyota Prius XW50 airbag control unit repair
While no specific trouble codes are publicly verified for the Toyota Prius XW50 airbag control module (89170-47030, 89170-47611), generic Toyota airbag codes may indicate a malfunction within the control module. These codes indicate communication problems or wiring faults within the safety system and require professional diagnosis.
- B1000 → Control unit communication error → Internal fault or data transmission problem.
- B1801 → Driver side airbag wiring error → Open or short circuit in the driver airbag circuit.
- B1811 → Passenger side airbag wiring fault → Malfunction in the passenger airbag circuit, possibly after an impact.
These trouble codes are common examples from the Toyota airbag system and require special Toyota diagnostic tools for accurate reading and resolution.
After a successful Toyota Prius XW50 airbag control unit repair, all error codes must be cleared and the system recalibrated.
What part numbers are available for the Toyota Prius XW50 airbag control unit repair?
For Toyota Prius XW50 airbag control unit repair, two exact OEM part numbers are primarily validated: 89170-47030 and 89170-47611. These genuine Toyota part numbers ensure compatibility and correct function in the Toyota Prius XW50 generation.
Part number **89170-47030** is a genuine Toyota airbag control unit listed in professional databases for the Prius XW50.
Part number **89170-47611** is also a genuine Toyota airbag control unit for the Prius IV (XW50) and is often found together with supplier code 150800-9560.
When replacing or repairing the Toyota Prius XW50 airbag control unit, it is critical to use the exact part number to ensure system integration and safety.