What is a Toyota Avensis T250 airbag control unit?
The Toyota Avensis T250 airbag control unit is your vehicle's central safety unit, 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 passive safety systems.
This electronic control unit (ECU) is essential for your safety. It is the brain of the SRS (Supplemental Restraint System) and ensures that airbags deploy precisely and within milliseconds in an emergency.
In the event of a failure, immediate diagnosis and repair is essential to restore full functionality of the safety system and deactivate the warning light.
Why is the Toyota Avensis T250 airbag control unit defective?
A Toyota Avensis T250 airbag control unit often malfunctions because it permanently stores crash data after an accident or because internal electrical faults such as overvoltage occur. This causes the SRS warning light to activate, as the system no longer functions properly and a critical safety component fails.
Common causes of failure include stored crash data after an impact, which blocks the control unit and requires replacement or reset.
Aging of the internal electronics, short circuits, or moisture damage can also damage the control unit. In these cases, a quick diagnosis at a specialized workshop is crucial.
Common error codes for Toyota Avensis T250 airbag control unit repair
During Toyota Avensis T250 airbag control unit repairs, specific error codes indicate a malfunction within the control unit itself that requires targeted repair. These codes are read by the diagnostic tool and identify the exact nature of the failure, enabling professional repair.
- B1100 → Airbag control unit malfunction → This code indicates an internal error or malfunction of the airbag control unit itself that requires repair or replacement.
- B0116 → Electrical malfunction of driver side airbag igniter → Although the error concerns the igniter, it is detected by the control unit and is often triggered by a fault in the wiring or the control unit itself.
Other error codes usually relate to sensors or individual airbags, but are not directly related to the central control unit. A precise diagnosis with a professional OBD-II scanner is essential for a successful Toyota Avensis T250 airbag control unit repair.
What part numbers are available for the Toyota Avensis T250 airbag control unit repair?
For Toyota Avensis T250 airbag control unit repairs, there are several original OEM part numbers from Toyota and their suppliers, such as TRW or Continental, that ensure compatibility with your vehicle model. The correct part number is crucial for the functionality and safety of the system after replacement or repair.
- 89170-05310 (Toyota OEM)
- 89170-05121 (Toyota OEM)
- 89170-05122 (Toyota/TRW OEM)
- 89170-05160 (Toyota OEM)
- 89170-042D50 (Toyota / Continental OEM)
These part numbers are relevant for Toyota Avensis T250 models from 2003 to 2008. Before ordering or repairing, please check the part number of your installed control unit to ensure exact compatibility.
Choosing the correct part number is crucial to ensure that the Toyota Avensis T250 airbag control unit repair is successful and that all safety functions work properly again.