What is a Toyota Innova AN40 airbag control unit?
The Toyota Innova AN40 airbag control unit is the central safety unit in the vehicle, responsible for activating the occupant restraint systems in the event of an accident. It collects critical crash data from connected sensors and precisely deploys airbags and seatbelt pretensioners to ensure maximum passenger safety.
This essential module continuously monitors the status of the entire Supplemental Restraint System (SRS). It is the digital brain of your Toyota Innova AN40's passive safety features, essential for occupant protection.
Why is the Toyota Innova AN40 airbag control unit defective?
A Toyota Innova AN40 airbag control unit is often registered as defective after an accident because it stores irreversible crash data, thus preventing further airbag deployment. Internal memory errors, invalid firmware, or power supply issues can also cause a failure, necessitating a professional Toyota Innova AN40 airbag control unit repair.
Because crash data is permanently stored in the control unit after an accident, the module cannot trigger any further alarms. This is for safety reasons and requires a reset to restore the system's functionality.
Internal component defects or software errors can also lead to failure. This is often indicated by an illuminated airbag warning light on the dashboard.
Common error codes for Toyota Innova AN40 airbag control unit repair
During Toyota Innova AN40 airbag control module repair, specific error codes may occur that indicate internal problems or crash events. These codes, such as B1790 for stored crash data or B1610 for memory error, signal that the module is malfunctioning and requires specialized diagnostics and repair services.
- B1000 → Control unit communication error → Internal connection problem or defect
- B1610 → Internal memory error → Damaged control unit memory
- B1620 → Invalid firmware in the control unit → Software error or corruption
- B1635 → Internal diagnostic error control unit → Malfunction of the self-diagnosis
- B1700 → Power supply control unit faulty → Interrupted or insufficient power supply
- B1790 → Crash data storage (reset blocked) → Accident event was registered
Which part numbers are relevant for the Toyota Innova AN40 airbag control unit repair?
For the Toyota Innova AN40 airbag control unit repair, the original Toyota OEM part numbers 89170-0K140, 89170-0KC20, and 89170-04040 are primarily relevant. These have been verified multiple times and are crucial for the correct assignment and compatibility of the module with your vehicle model from approximately 2016 onwards.
These numbers ensure that the replacement or repair module exactly matches the specifications of your Toyota Innova AN40.
- 89170-0K140 → Toyota → Original Airbag Control Unit
- 89170-0KC20 → Toyota → Sensor Assembly Air Bag (compatible OEM)
- 89170-04040 → Toyota → Original Sensor Assembly / Airbag Control Module
Supplier-specific OEM part numbers from Bosch, Continental, Siemens, or Autoliv could not be 100% verified for this specific model and should therefore not be used as the sole reference.