What is a Toyota Auris Hybrid airbag control unit?
The Toyota Auris Hybrid airbag control unit is the central safety unit in the vehicle, activating all occupant restraint systems in the event of an accident. It continuously monitors sensors, stores relevant crash data, and ensures the proper functioning of all airbag modules and seatbelt pretensioners in the vehicle, specifically adapted for the hybrid models.
It is an essential component of the Supplemental Restraint System (SRS), which is crucial for the safety of the occupants of the Toyota Auris Hybrid.
A Toyota Auris Hybrid airbag control unit repair restores full functionality to ensure the highest safety standards.
Why is the Toyota Auris Hybrid airbag control unit defective?
A Toyota Auris Hybrid airbag control unit often fails because it permanently stores crash data after an accident that needs to be erased, or because internal electronic components fail due to overvoltage, short circuits, or aging. This typically leads to the activation of the SRS warning light in the instrument cluster and the deactivation of the entire airbag system.
A common reason for failure is the storage of so-called "crash data," which is permanently stored in the control unit after an airbag deployment and cannot simply be deleted via diagnostics.
In addition, defects can occur due to water ingress, cable breakage or age-related material fatigue of the electronic components.
Proper Toyota Auris Hybrid airbag control unit repair therefore often involves replacing or professionally repairing the module.
Common error codes for Toyota Auris Hybrid airbag control unit repair
During Toyota Auris Hybrid airbag control unit repair, specific error codes indicate problems directly related to the control unit, such as communication problems or display malfunctions. These codes enable a precise diagnosis to identify the exact cause of the airbag system warning and enable targeted troubleshooting.
- B1000 : Control Unit Communication Error → This code indicates problems in the internal logic of the airbag control unit or its wiring and requires detailed diagnosis.
- B1660 : Passenger Airbag ON/OFF Indicator Circuit Malfunction → This trouble code indicates a problem in the passenger airbag indicator circuit, often related to the control module itself or its connections.
Other codes involving squib circuits are detected by the control module, but relate to external components such as airbag modules or their wiring and are not primarily listed here.
For accurate troubleshooting of the Toyota Auris Hybrid airbag control unit repair, a professional diagnosis with Toyota-specific tools is always essential.
What part numbers are available for Toyota Auris Hybrid airbag control unit repair?
Toyota Auris Hybrid airbag control unit repairs require specific Toyota OEM part numbers, which vary depending on the model generation (E15, E18). It is crucial to verify the exact part number of the old part, as this ensures compatibility with the specific vehicle model and safety features.
Identifying the correct part number is the first step to successful repair or replacement.
To date, no direct supplier part numbers (such as Bosch, Continental, Siemens, Autoliv) have been identified for the Toyota Auris Hybrid airbag control unit; these are exclusively Toyota OEM numbers.
| Part number | Manufacturer | type | Source/Compatibility |
|---|---|---|---|
| 8917012740 | Toyota | Original | Auris E15 Hybrid (Hatchback 1.8 16V HSD, from 2010) |
| 89170-02C30 | Toyota | Original | Auris E18 (2012–2018), including hybrid models |
| 89170-02J70 | Toyota | Original | Auris II (from 2012), also possible for Auris Hybrid, check compatibility |
Before purchasing or repairing, always check the exact model group (E15 or E18) and the existing part number.
Technical specifications and compatibility of the Toyota Auris Hybrid Airbag Control Unit
The Toyota Auris Hybrid airbag control unit (E18) is precisely tailored to the second-generation Toyota Auris Hybrid (approx. 2012–2018) and integrates seamlessly into the complex high-voltage safety system. It controls all airbags and seatbelt pretensioners to ensure maximum occupant protection in the event of a collision, taking into account the specific characteristics of the hybrid drive.
The control unit operates in the vehicle's low-voltage electrical system, but is closely connected to the hybrid drive's high-voltage battery.
It receives signals from several impact sensors (front, side and rear sensors) and is responsible for the on-demand deployment of the driver and front passenger airbags, side and curtain airbags as well as the driver's knee airbag.
The belt tensioners on the front seats are also controlled and triggered by the control unit.
| Model | Years of construction | Engine type | Gearbox |
|---|---|---|---|
| Toyota Auris Hybrid (E18) Hatchback 5-door | 2012–2018 | 1.8 Hybrid (ZWE186, ZWE186R) | eCVT (continuously variable hybrid transmission) |
| Toyota Auris Hybrid Touring Sports (estate) | 2012–2018 | 1.8 Hybrid (ZWE186H) | eCVT |
The control unit stores all relevant error codes and conditions, enabling precise diagnosis and troubleshooting by specialist workshops during a Toyota Auris Hybrid airbag control unit repair.
Installation position and special features of the Toyota Auris Hybrid airbag control unit repair
Toyota Auris Hybrid airbag control unit repair requires precise handling, as the control unit is centrally located under the dashboard, on the floor in front of the gearshift lever, and is integrated into the vehicle's high-voltage system. Special features include a residual voltage of up to 90 seconds after the vehicle is shut down and the need for professional calibration after replacement for optimal safety.
The control unit housing is designed to be vibration and shock resistant and is firmly connected to the vehicle floor.
It connects to all impact sensors, airbag inflators and seat belt pretensioners and communicates with the vehicle network via the CAN bus.
Due to the hybrid technology, additional safety measures are implemented in the control unit, which can also control the deactivation of the high-voltage battery in the event of an accident.
Repairs and replacement of the airbag control unit may only be carried out by trained specialists, as improper handling can be life-threatening and impair the functionality of the SRS system.
After an accident or replacement, recalibration and coding of the control unit using special diagnostic equipment is mandatory to ensure correct function and to clear the SRS warning light.