What is a Toyota Sequoia K30 airbag control unit?
The Toyota Sequoia K30 airbag control unit is the central safety unit in the Supplemental Restraint System (SRS), which activates all occupant restraint systems, such as airbags and seatbelt pretensioners, in the event of an accident. It continuously monitors sensors, stores relevant crash data, and ensures the proper functioning of all airbag modules in the vehicle to ensure maximum occupant safety.
This module, also known as SRS module or airbag ECU, is crucial for the vehicle's passive safety.
It processes data from collision sensors to precisely control the deployment of airbags and seat belt pretensioners.
Why is the Toyota Sequoia K30 airbag control unit defective?
A Toyota Sequoia K30 airbag control unit often becomes defective because it stores crash data after an accident that requires reprogramming or replacement, or due to internal electronic errors such as short circuits, power surges, or age-related component failures, which makes a Toyota Sequoia K30 airbag control unit repair necessary.
After an airbag deployment event, the control unit's memory is blocked and must be reset or replaced, otherwise malfunctions may occur.
Internal component failures, corrosion at connectors, or problems with the vehicle voltage can also lead to module failure, indicated by the illuminated airbag warning light.
Common error codes for Toyota Sequoia K30 airbag control unit repair
During Toyota Sequoia K30 airbag control unit repair, specific error codes occur that point directly to problems within the control unit rather than sensors or other components of the SRS system, allowing for targeted diagnosis and reducing repair costs.
- **B1000** → Control Unit Communication Error (Airbag ECU Malfunction) → This code is recorded when an internal fault is detected in the airbag control unit itself, often caused by a short circuit, open circuit, or internal component failure.
- **B1660** → Passenger Airbag OFF Indicator Circuit Malfunction → This trouble code indicates a problem with the passenger airbag status indicator circuit that originates directly from the airbag control module.
What part numbers are available for the Toyota Sequoia K30 airbag control unit repair?
For Toyota Sequoia K30 airbag control unit repair, the 100% verified OEM part number 89170-0C030 is the primary choice for model years 2001-2005, while similar numbers such as 89170-0C040 and 89170-0C050 also exist but require specific VIN and model year verification to ensure compatibility.
Part number 89170-0C030 is fully confirmed as a genuine OEM Airbag Control Module for the Toyota Sequoia K30 (2001-2005).
Alternative numbers from the 89170-0C0xx series range may be compatible, but require exact verification of the chassis number before installation.