What is a Toyota Matrix XRS airbag control unit?
The Toyota Matrix XRS airbag control unit is the central safety unit that precisely activates all occupant restraint systems in the event of an accident. It continuously monitors sensors, stores important crash data, and ensures the proper functioning of all airbag modules in the vehicle.
This SRS (Supplemental Restraint System) control module collects and processes sensor information from the vehicle. Its primary function is to precisely coordinate the deployment of the airbags and seatbelt pretensioners in an emergency.
A defective control unit can impair the functionality of the entire airbag system, reducing vehicle safety and making an urgent Toyota Matrix XRS airbag control unit repair necessary.
Why is the Toyota Matrix XRS airbag control unit defective?
The Toyota Matrix XRS airbag control unit becomes defective because it stores crash data after an accident or internal components fail. This causes the airbag warning light to remain permanently illuminated. A malfunction compromises safety and makes a Toyota Matrix XRS airbag control unit repair essential.
Because crash data is permanently stored in the module, the airbag system can no longer be reset after an accident. In this case, the airbag warning light remains permanently illuminated.
An internal control unit error or communication problems can also lead to failure. Such defects render the system unreliable and require professional repair.
Moisture damage or electrical short circuits are also common causes of a defect. A thorough diagnosis is essential for any Toyota Matrix XRS airbag control unit repair.
Common error codes for Toyota Matrix XRS airbag control unit repair
Toyota Matrix XRS airbag control unit repair is often triggered by specific error codes that indicate internal problems. These codes include crash data storage, hardware defects, or communication errors within the control unit. Such malfunctions impair airbag function and require specialized diagnostics and professional reset.
- B1000 → Control unit communication error / SDM malfunction → Indicates a failed communication of the airbag control unit.
- B1620 / B1670 → Internal error in the airbag control unit → Indicates a hardware or software defect within the control unit itself.
- B1499 → Airbag condition monitor detects deployed airbag → Indicates that the module has registered a crash and processed the deployment of airbags.
- B1231 → Event Threshold Exceeded → Means that crash data has been permanently stored in the memory of the airbag control unit.
- B1193 → Crash Event Storage → Indicates that the control unit has registered an impact and stored the corresponding data.
- 65535 → Internal control unit memory error → Indicates a malfunction in the internal memory or firmware of the control unit.
- B1000/31 → Center Airbag Sensor Assembly Malfunction → Concerns a malfunction of the central airbag sensor connected to the control unit.
- 8-5/5-1/9-1 → Internal failure in SRS unit → Indicates a general internal hardware or software error in the airbag control unit.
What part numbers are available for the Toyota Matrix XRS airbag control unit repair?
For Toyota Matrix XRS airbag control unit repairs, specific OEM part numbers are crucial to ensure compatibility and safety. The relevant original airbag control unit part numbers for the Toyota Matrix XRS are 89170-02420 and 89170-01100. An exact part number match is essential for correct and safe operation.
The primary original OEM part number for the Toyota Matrix XRS airbag control module is 89170-02420. This number identifies the central airbag control module for your vehicle.
Another relevant OEM number is 89170-01100, which is also used for the Toyota Matrix XRS airbag control module, even in tested used modules. This is important for a successful Toyota Matrix XRS airbag control module repair.
Note part number 62180-01020, which refers to a curtain airbag module, not the central control unit itself. Nevertheless, it is relevant in the context of the Matrix XRS airbag systems.
For a professional Toyota Matrix XRS airbag control unit repair, the module can be reset after an airbag deployment. This service allows the original control unit to be reused, which is often more cost-effective than purchasing a new one.