What is a Toyota bZ4X XC10 airbag control unit?
The Toyota bZ4X XC10 airbag control unit is the central safety unit in the vehicle, continuously monitoring all impact sensors and instantly activating life-saving occupant restraint systems such as airbags and seatbelt pretensioners in the event of an accident. It also stores important crash data and is responsible for the proper functioning of the entire SRS (Supplemental Restraint System).
This module is critical for the safety of vehicle occupants as it processes data from frontal, side, curtain and knee airbag sensors as well as seat occupancy sensors.
It is tailored to the specific vehicle electrical system voltage of the Toyota bZ4X and features an on-board diagnostic unit for fault detection and system monitoring.
Why is the Toyota bZ4X XC10 airbag control unit defective?
A Toyota bZ4X XC10 airbag control unit typically becomes defective or fails because it permanently stores crash data after an accident, preventing further safe operation without a professional reset service or replacement. Internal hardware or software errors, communication problems in the CAN bus, or power supply issues can also lead to failure, necessitating immediate Toyota bZ4X XC10 airbag control unit repair .
Because the control unit stores accident data, it often needs to be reset or repaired after a collision, otherwise the airbag warning light will remain permanently lit and the system will remain deactivated.
A broken module can also be caused by internal electronic errors or faulty programming, which makes system diagnosis difficult and requires a special Toyota bZ4X XC10 airbag control unit repair or replacement.
Common error codes for Toyota bZ4X XC10 airbag control unit repair
While no official, specific trouble codes are publicly available exclusively for the Toyota bZ4X XC10 airbag control unit, general airbag ECU codes (B-codes) in the B1000-B1600 range indicate problems with the control unit itself, which may require a Toyota bZ4X XC10 airbag control unit repair . These generic codes typically signal internal errors, communication problems, or issues with the module's power supply.
- B1000 → Control unit communication error → Cause: Problem in data transmission between ECU and other systems.
- B1100 → Internal airbag control unit error → Cause: Hardware or software error within the module itself, causing failure.
- B1120 → Airbag control unit hardware monitoring → Cause: The control unit detects an internal malfunction or inconsistency.
- B1200 → Airbag control unit voltage supply → Cause: Insufficient or unstable power supply to the control unit.
- B1400 → EEPROM memory error in the airbag control unit → Cause: Damage to the non-volatile memory data, often after an accident.
A professional diagnosis with Toyota-specific tools in the workshop is essential to identify the exact cause of the error codes and to perform a correct Toyota bZ4X XC10 airbag control unit repair .
What part numbers are available for the Toyota bZ4X XC10 airbag control unit repair?
For Toyota bZ4X XC10 airbag control unit repair, two 100% verified Toyota OEM part numbers are primarily relevant: 89170-42E70 and 89170-42B60. Both are confirmed as original airbag control units for the Toyota bZ4X model years 2023 and 2024 (until 11/2023). These numbers are sourced from official or professional Toyota spare parts sources and ensure full compatibility and safety standards.
The part number 89170-42E70 is repeatedly identified as a suitable original module for the Toyota bZ4X (model year 2023).
The number 89170-42B60 is also an official OEM part number, listed by the official Toyota parts platform for the bZ4X as of November 2023.
No other OEM part numbers from suppliers such as Bosch or Continental could be publicly verified for this specific model and control unit, which narrows down the search for suitable replacement parts for a Toyota bZ4X XC10 airbag control unit repair .