What is a Toyota Innova Hycross airbag control unit?
The Toyota Innova Hycross airbag control unit is the central safety unit in your vehicle, activating all occupant restraint systems, such as airbags and seatbelt pretensioners, in the event of an accident. It continuously monitors sensors, stores important crash data, and ensures the proper functioning of all safety-related modules in the vehicle to provide maximum occupant safety.
This safety-critical module is specifically designed for the third-generation Toyota Innova Hycross (from 2023). It is designed for models with up to seven airbags and advanced driver assistance systems (ADAS).
The control unit works closely with the ABS and Vehicle Stability Control (VSC). After an accident, it stores relevant crash information and activates the airbag warning light until repairs or a reset are made.
Why is the Toyota Innova Hycross airbag control unit defective?
A Toyota Innova Hycross airbag control unit is often reported as defective after an accident because it permanently stores crash data that requires a reset. Internal electronic errors, such as component aging or overvoltage, can also lead to failure, impairing the function of the airbag system.
When an airbag is deployed, the control unit stores the impact data in its non-volatile memory. This "crash data" must be professionally erased to restore the system to full functionality.
Other causes can include internal short circuits, communication errors with other vehicle systems, or a faulty power supply. A defective control unit always activates the SRS warning light on the dashboard.
Common error codes for Toyota Innova Hycross airbag control unit repair
There are currently no verified OEM trouble codes specific to the Toyota Innova Hycross airbag control unit. However, generic Toyota trouble codes such as B1000, B1651, and B1660 may occur, indicating internal problems or communication failures within the airbag module.
These codes typically indicate problems with the control unit itself, not with sensors or other airbag components. A professional diagnosis using a Toyota-specific tool is essential to determine the exact cause.
- B1000 → Control unit communication error → The airbag control unit cannot communicate correctly with other systems.
- B1651 → Manual Deactivation Switch Error → A problem with the passenger airbag deactivation switch has been detected.
- B1660 → Passenger airbag ON/OFF indicator error → The passenger airbag status indicator is not working properly.
What part numbers are available for the Toyota Innova Hycross airbag control unit repair?
After extensive research, there are currently no unique, 100% verified OEM part numbers available for the Toyota Innova Hycross airbag control unit in leading parts catalogs (as of June 2025). Existing numbers such as "89170-0K140" are often intended for other Innova variants and are not confirmed for the Hycross.
Sources usually only mention "Toyota Innova" or "Innova Crysta" in general, but not specifically the Hycross series. This means that a direct compatibility check using a general part number is currently unreliable.
For the exact OEM part number, we strongly recommend contacting an authorized Toyota dealer directly, providing your vehicle identification number (VIN). This is the most reliable way to obtain the correct part number for your specific Toyota Innova Hycross model.